ПАТЧ-ИЗЛУЧАТЕЛЬ

Улучшенный патч-излучатель отличается следующими дополнительными признаками: излучательная поверхность (11) выполнена в виде кольцевой и/или рамочной излучательной поверхности (11), которая проходит вокруг зоны выемки (13), излучательная поверхность (11) удлинена с переходом на боковые поверхности, соответственно, боковые стенки (3с), и на боковых поверхностях, соответственно, боковых стенках (3с), образована гальванически соединенная с излучательной поверхностью (11) излучательная структура (18) боковых поверхностей, которая в окружном направлении боковых поверхностей, соответственно, боковых стенок (3с), содержит участки (19) боковых излучательных поверхностей, между которыми предусмотрены электрически не проводящие зоны (20) выемки. Технический результат: уменьшение объема антенны относительно ее широкополосности. 30 з.п. ф-лы, 42 ил.

ПАТЧ-ИЗЛУЧАТЕЛЬ

... 1. Патч-антенна, имеющая следующие признаки:- диэлектрическую подложку (3) с верхней стороной (3а), расположенной на расстоянии от нее нижней стороной (3b) и проходящими между верхней стороной (3а) и нижней стороной (3b) окружными боковыми поверхностями или боковыми стенками (3с),- на верхней стороне (3а) или над верхней стороной (3а) подложки (3) расположена электрически проводящая излучательная поверхность (11),- питающую структуру (15) для питания излучательной поверхности (11),- излучательная поверхность (11) выполнена в виде кольцевой и/или рамочной излучательной поверхности (11), которая проходит вокруг зоны выемки (13),отличающаяся тем, что имеет следующие другие признаки:- на боковых поверхностях, соответственно боковых стенках (3с) или на расстоянии от боковых поверхностей или боковых стенок (3с) образована гальванически соединенная с излучательной поверхностью (11) излучательная структура (18) боковых поверхностей, которая в окружном направлении боковых поверхностей, соответственно ...

Mehrfachresonanzantenne, Antennenmodul und Funkgerät mit einer derartigen Mehrfachresonanzantenne

Patch antenna

Circularly polarized antenna apparatus and radio communication apparatus using the same

GPS Antenna

PLANAR MULTIPLE REEL ANTENNA

REPEATED PARASITIC COUPLING ON THE INSIDE ONE OF STRIP LEADER ELEMENTARY ANTENNAS TO EXTERNAL ONES OF STRIP LEADER ELEMENTARY ANTENNAS

High gain antenna for microwave frequencies

Extended bandwidth dual-band patch antenna systems and associated methods of broadband operation

PATCH FED PRINTED ANTENNA

The disclosure relates to a printed antenna fed by a patch. The printed antenna includes at least one ground opening in it, this radiating opening being arranged to radiate into the space situated above said ground plane, and a conductive feed patch place beneath said radiating opening and insulated by a dielectric layer, in such a way that the patch is coupled to the radiating opening in order to feed the radiating opening without parasitic radiation being excited. It also concerns printed antennas with two polarisation directions and corresponding antenna arrays.

PATCH ANTENNA WITH AN ELECTRICALLY SMALL GROUND PLATE USING PERIPHERAL PARASITIC STUBS

In accordance with the present invention, there is provided a patch antenna assembly (10) having a generally planar patch antenna (12), defined by a first peripheral boundary (14), and a generally planar parasitic ground plate (16), disposed at a spaced parallel relation to the patch antenna (12). The assembly (10) further includes at least one conductive parasitic shielding element (18) for segregating electromagnetic fields between the patch antenna (12) and the ground plate (16). The shielding element (18) is disposed in electrical communication with the ground plate (16) and extends from the ground plate (16) and substantially about the first peripheral boundary (14) of the patch antenna (12).

WIRELESS LOCAL LOOPS INCLUDING HORIZONTALLY POLARIZED ANTENNAS

Wireless local loops include primarily non-vertically polarized antennas. Preferably, the wireless local loop includes horizontally polarized antennas. By using primarily non-vertically polarized antennas in the WLL, interference between cellular, satellite and/or other radiotelephone communications systems, which employ predominantly vertically polarized antennas, can be reduced and preferably minimized. Conventional cellular and satellite radiotelephone systems use vertically polarized transmissions due to the vertical nature of the orientation of the mobile antennas on vehicles and/or mobile radiotelephones. However, in a WLL, with its fixed wireless telecommunications, there is no need to use vertically oriented antennas. Accordingly, to reduce interference, antennas that are primarily non- vertically polarized are used.

VERTICALLY-POLARIZED PATCH ANTENNA

A patch antenna for achieving a vertically-polarized radiation pattern is described. The patch antenna includes a closed-curve slot within which a signal feed point is located. Parasitic slots are disposed outside or inside the closed-curve slot. In one embodiment, the closed-curve slot is a ring slot and the parasitic slots are arc slots having a common center point with the ring slot. The antenna may further include a lower patch capable of producing a different radiation pattern with different polarization and at a different frequency band, to result in a dual-band antenna. The dual-band antenna may operate in the 5.9 GHz DSRC and 1.575 GHz GPS bands.

DUAL ANTENNA STRUCTURE HAVING CIRCULAR POLARISATION CHARACTERISTICS

There is disclosed an antenna device made up of at least first, second and third conductive metal plates arranged in a parallelepiped configuration. The third plate defines a lower plane and the first and second plates together define an upper plane substantially parallel to the lower plane. The first and second plates are separated by a slot in the upper plane, and the second and third plates are connected to each other by a grounding connection. The first plate comprises a first, active antenna arm that is provided with a feed connection, and the second plate comprises a second antenna arm that may be passive or active. The antenna device generates a circularly polarised radiation pattern that is good for personal navigation devices, while being significantly more compact than existing ceramic patch antennas that are typically used in these devices.

DUAL ANTENNA STRUCTURE HAVING CIRCULAR POLARISATION CHARACTERISTICS

There is disclosed an antenna device made up of at least first, second and third conductive metal plates arranged in a parallelepiped configuration. The third plate defines a lower plane and the first and second plates together define an upper plane substantially parallel to the lower plane. The first and second plates are separated by a slot in the upper plane, and the second and third plates are connected to each other by a grounding connection. The first plate comprises a first, active antenna arm that is provided with a feed connection, and the second plate comprises a second antenna arm that may be passive or active. The antenna device generates a circularly polarised radiation pattern that is good for personal navigation devices, while being significantly more compact than existing ceramic patch antennas that are typically used in these devices.

CAPACITIVELY COUPLED PATCH ANTENNA

Systems and methods relating to patch antennas. A patch antenna has a substrate, a resonant metal plate at one side of the substrate, and a ground plane at the other opposite side of the substrate. Two feed pins are used to couple the antenna to other circuitry. The feed pins pass through the substrate and holes in at the ground plane. The feed pins are physically disconnected from both the resonant metal plate and the ground plane. The feed pins are capacitively coupled to the resonant metal plate to provide an electronic connection between other circuitry and the patch antenna.

DIELECTRIC LOADED MICROSTRIP PATCH ANTENNA

A dielectric loaded microstrip patch antenna is provided to deliver relatively wide operational bandwidth dual-band, with relatively good isolation and flexibility for circular polarization, while having a compact design and light weight to suit mobile and wireless applications. The disclosed invention allows for (a) an antenna size reduction for a given operating frequency, (b) an enhancement of operational bandwidth, (c) dual-band and dual polarization operations. The invention operates on the principle that by properly loading a patch, its resonating frequency and its quality factor (Q) can be modified. The loading can be achieved using dielectric strips strategically placed under the patch. A preferred embodiment consists of a conducting patch with an air dielectric layer over a ground plane, dielectric strips, .epsilon.r1 and .epsilon.r2, and a feed network. The antenna operating frequency is controlled by the dielectric permittivity, dimensions and locations of the strips er1. The ...

АНТЕННАЯ СИСТЕМА, ВКЛЮЧАЮЩАЯ В СЕБЯ АНТЕННУ С КРУГОВОЙ ПОЛЯРИЗАЦИЕЙ

Система антенн включает в себя антенну с круговой поляризацией (СР) для приема и/или передачи RF сигнала с круговой поляризацией. Эта СР антенна включает в себя пару излучающих патчей, каждый из которых имеет удлиненную форму. Удлиненная ось определена вдоль наиболее длинной длины каждого из излучающих патчей. Эти удлиненные оси расположены, в общем, перпендикулярно друг к другу для генерации круговой поляризации. Фидерный элемент копланарного волновода расположен между излучающими патчами для подачи RF сигналов от излучающих патчей и/или к ним через электромагнитную связь. Ширина щели копланарного волновода варьируется для обеспечения согласования импеданса СР антенны с линией передачи.

PANEL ANTENNA

ANTENNA SYSTEM, INCLUDING ANTENNA WITH CIRCULAR POLARIZATION

Extended bandwidth dual-band patch antenna systems and associated methods of broadband operation

Antenna and portable apparatus

PLATED ANTENNA MINIATURISEE, HAS DOUBLE POLARIZATION, HAS VERY BROAD BAND

ANTENNA HAS WAVEGUIDE HAS RIBBON FOR WAVES HAS CIRCULAR POLARIZATION

Patch antenna construction

Les antennes à plaque comprennent trois éléments principaux : un corps diélectrique (210), un élément à plaque rayonnant (plaque rayonnante (230), élément rayonnant ou élément de résonance), et une broche d'alimentation (150). Pour assembler une antenne, la plaque rayonnante (230) est insérée par pression dans le corps diélectrique (210) de manière que leurs caractéristiques d'appariement et ouvertures s'alignent. Une broche d'alimentation (150) est alors passée par les ouvertures alignées (146, 214). Une fixation supplémentaire de la plaque rayonnante et/ou de la broche d'alimentation est possible par un moyen adhésif ou mécanique. Ainsi, le processus de fabrication est simplifié et aboutit à des résultats plus cohérents et des coûts réduits par comparaison avec les procédés actuels couramment employés.

PLATED ANTENNA MINIATURISEE, HAS DOUBLE POLARIZATION, HAS VERY BROAD BAND

L'invention concerne une antenne plaquée miniaturisée dont au moins un élément rayonnant (10) engendre deux ondes polarisées orthogonales indépendantes. Chaque élément rayonnant (10 et 11) est alimenté par deux lignes d'alimentation orthogonales (5a et 5b), situées dans un même plan (5) et indépendantes l'une de l'autre, à travers deux fentes (3a et 3b), orthogonales entre elles, perpendiculaires aux lignes, gravées dans un même plan de masse (4) et séparées l'une de l'autre. Cette invention permet de diminuer fortement le couplage et le niveau de polarisation croisée et d'augmenter la largeur de bande passante. Applications: notamment antennes de réception multisatellites et antennes d'émission et de réception à large bande sur satellites embarqués ...

BROADBAND CIRCULAR POLARIZED ANTENNA USING C-SHAPED SLOT

The present invention relates to a broadband circular polarized antenna using a C-shaped slot. The broadband circular polarized antenna comprises: a dielectric substrate; a ground surface formed on a top surface of the dielectric substrate; a C-shaped slot formed on the ground surface; a micro-strip line formed on a bottom surface of the dielectric substrate to perform a function of a feeding line; and a dielectric resonator formed on the ground surface to cover the slot, having a pillar structure having a bottom surface of a spidron fractal shape. As such, the broadband circular polarized antenna may have a broadband circular property using a simple feeding scheme. COPYRIGHT KIPO 2016 ...

NON-SQUARE PATCH ANTENNA OF A CERAMIC DIELECTRIC BLOCK FOR RECEIVING A SATELLITE SIGNAL AND AN INTEGRATED ANTENNA MODULE HAVING A CONDUCTIVE PATTERN FORMED ON A SIDEWALL OF THE DIELECTRIC BLOCK

PURPOSE: A non-square patch antenna of a ceramic dielectric block and an integrated antenna module are provided to reduce a size of the antenna module by handling both left and right polarized waves using a single antenna. CONSTITUTION: A non-square patch antenna includes a ceramic dielectric material and a conductive material. A conductive pattern(22) is applied on a dielectric block(21). An aspect ratio of the dielectric block is different from that of the conductive pattern. A feeding pin(23) is electrically connected to a conductive surface of an upper end of the patch antenna. The feeding pin penetrates the dielectric block and is formed to be electrically isolated from a conductive surface(24) at a lower end of the dielectric block. The patch antenna is formed by using an SMT(Surface Mount Technology). © KIPO 2008 ...

RECEIVING DEVICE HAVING CIRCULAR ARRAY ANTENNA

The present invention provides a receiving device having a circular array antenna, which automatically recognizes an antenna number connected to each receiver even when multiple cables are randomly connected without considering antenna numbers and receiver numbers, so as to reduce the time and effort for confirming fastening of the antenna and remove a cause of a system error such as a wrong connection. The device according to the present invention comprises: a circular array antenna in which antennas other than a specific one of antennas are circularly arranged at regular intervals around the specific antenna; and a plurality of receivers connected in a one-to-one manner to the corresponding antennas of the circular array antenna. At this time, predetermined two of the receivers are respectively connected to the center antenna arranged at the center of the circular arrange antenna and the reference antenna serving as a reference of the array antenna. Each of the remaining receivers is ...

COMPACT WIDEBAND HIGH GAIN CIRCULARLY POLARIZED ANTENNA

Lowersubstrate T 112 Ground plane 108 via 110 Probe feed (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 04 October 2018 (04.10.2018) W I PO I PCT o n °nolo OH 1101 ioo IIIII Imo oimIE (10) International Publication Number WO 2018/182507 Al (51) International Patent Classification: HO1Q 1/38 (2006.01) HO1Q 13/10 (2006.01) HO1Q 21/24 (2006.01) HO1Q 19/00 (2006.01) (21) International Application Number: PCT/SG2018/050118 (22) International Filing Date: 19 March 2018 (19.03.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 10201702690U 31 March 2017 (31.03.2017) SG (71) Applicant: AGENCY FOR SCIENCE, TECHNOLO- GY AND RESEARCH [SG/SG]; 1 Fusionopolis Way, #20-10 Connexis North Tower, Singapore 138632 (SG). (72) Inventors: NASIMUDDIN, -; c/o PKM, Institute for In- focomm Research, 1 Fusionopolis Way, #21-01 Connexis ...

Circularly polarized coupling device

PLANAR ANTENNA HAVING A WIDENED BANDWIDTH

The present invention relates to a planar antenna (201) having a widened bandwidth. Said planar antenna includes at least one first conductive element (211) arranged above a ground plane (215) and separate from the latter, a means for exciting said at least one first conductive member and which is configured to excite two different orthogonal resonant modes, wherein said antenna is characterized in that said at least one first conductive member (211) is made of a substrate comprising at least one thin film of an anisotropic material having a relative permittivity greater than 10 for 2 Ghz. The invention can in particular be used in mobile communication terminals.

TRI-POLAR ANTENNA ARRAY ELEMENT

A tri-polar antenna element for a beamforming antenna array has a pair of mutually orthogonal slots defining a first plane incorporating azimuthal and elevation directions. Between adjacent array elements, 0.5 wavelength spacing is provided in the azimuthal plane and 0.8 wavelength spacing in the elevation plane. The elements are sufficiently proximate to avoid forming grating lobes in a radiated signal. A dual feed network and patch radiator extend along second and third planes, parallel to and respectively below and above the first plane. A linear slot bisects the azimuthal and elevation directions along the first plane in the additional 0.3 wavelength spacing corresponding to the elevation plane. A linear feed network extends along the second plane in the additional 0.3 wavelength spacing below the linear slot. The invention provides 1.5 increase in antenna elements density, smallest physical footprint, and improves available power output by reducing combination power loss.

CIRCULARLY POLARIZED CERAMIC PATCH ANTENNA HAVING EXTENDED GROUND FOR VEHICLE

A circularly polarized ceramic patch antenna having an extended ground for a vehicle is provided. The extended ground is formed under a patch antenna, has a predetermined thickness, is formed of a metal conductor having the same shape as the patch antenna, and is electrically connected to a ground plane formed on a board. The thickness of the extended ground is adjusted, so that it is possible to adjust radiation efficiency of the ceramic patch antenna that operates at a specific frequency band. Thus, the ceramic patch antenna has the effect of improving directionality of a radiation pattern formed in a direction parallel to the ground plane, and the effect of reducing a null point caused by a field effect to increase an antenna gain thereof.

In-vehicle antenna apparatus

A sheet of glass (rear glass) is provided with a radiation conductor. An electronic circuit unit includes a base plate soldered on the radiation conductor so as to be fixed on the sheet of glass; a frame body which houses a circuit substrate and is screwed on the base plate; and a cover for covering the frame body. The base plate has a narrow section that connects a soldering section and other sections of the base plate. The soldering section is provided with a protrusion that abuts on the radiation conductor such that a solder-accumulation space is formed around the protrusion. Furthermore, the base plate is provided with a plurality of height-adjustment portions disposed at different positions and distant from the soldering section. Each height-adjustment portion has substantially the same dimension as the protrusion.

Planar antenna array and microstrip radiating element for planar antenna array

A flat antenna array includes a screen plate, a conductive aperture plate which overlies the screen plate, and a dielectric sheet which is located between the aperture plate and the screen plate. Apertures in the screen plate define the locations of waveguides. A network of conductors is carried on the dielectric sheet. The conductors include stimulating elements which are aligned with the apertures. Each stimulating element includes first and second probes which have axes which cross each other and constitute a probe pair. A plurality of reflective elements are located above the dielectric sheet at locations which correspond to the apertures. A first output circuit connects together the first probes, a second output circuit connects together the second probes.

Circularly polarized wave patch antenna with wide shortcircuit portion

A patch and a ground conductor are shortcircuited with two shortcircuit portions that are composed of conductive plates and that pass through a dielectric substrate. The shortcircuit portions are connected to the inner periphery of the patch and have large widths therealong. A first shortcircuit portion is disposed on a first line that connects a microstrip feeder line and the center point of the patch. A second shortcircuit portion is disposed on a second line that passes through the center point. The inner angle of the first line and the second line is in the range from 80 degrees to 110 degrees.

Phased array cellular base station and associated methods for enhanced power efficiency

A base station includes a radio channel generating circuit for generating a plurality of individual radio channel signals each at a different frequency from one another, and a plurality of individual phased array antennas operatively connected to the radio channel generating circuit so that each individual phased array antenna transmits only one individual radio channel signal at a time. Each of the phased array antennas preferably includes a substrate and a plurality of radiating elements mounted thereon in a predetermined pattern. Each radiating element is readily provided by a stripline, and the substrate is preferably a circuit board. Accordingly, another feature of the base station according to the invention is that power radiated by each phased array antenna can be selectively controlled to reduce possible interference while maintaining communications with respective mobile units that are both near and far from the base station. A switch may be provided between the radio channel generating ...

ANTENNA ARRAY WITH ASYMMETRIC ELEMENTS

An RFID reader is provided that includes an antenna array comprising multiple antenna elements circumferentially distributed around a longitudinal axis of the antenna array. Each antenna element includes multiple patch elements disposed above one or more underlying substrates, wherein the patch elements of each antenna element are disposed on an outer side of the antenna element. Further, one or more of the antenna elements is an asymmetric antenna element, wherein a first end of the asymmetric antenna element is wider than a second, opposite end of the asymmetric antenna element, wherein a first patch element disposed proximate to the first end of the asymmetric antenna element is larger than a second patch element disposed proximate to the second end of the asymmetric antenna element, and wherein a resonant frequency associated with the first patch element is approximately the same as a resonant frequency associated with the second patch element.

Circularly polarized antenna

A circularly polarized antenna (1) includes first and second dielectric substrates (11, 21), a grounding element (12), a feeding element (13), a coupling element (23), and a close-loop radiating element (22). The grounding element (12) is formed on a first surface (111) of the first dielectric substrate (11). The feeding element (13) is formed on a second surface (112) of the first dielectric substrate (11). The second dielectric substrate (21) is disposed on the second surface (112) of the first dielectric substrate (11) and overlaps the feeding element (13) . The couplingelement (23) is formed on the second dielectric substrate (21). The close-loop radiating element (22) is formed on the second dielectric substrate (21).

PATCH ANTENNA

A DIELECTRIC STRUCTURE FOR ANTENNAS IN RF APPLICATIONS

MINIATURE CIRCULARLY POLARIZED PATCH ANTENNA

Satellite antenna system

The invention relates to a satellite antenna system particularly for land mobile voice communication, comprising a radiator unit (1') which is steerable to the satellite in the azimuth plane. According to the invention, the satellite antenna system includes a number of antenna elements (1; 11 - 11²), of which the radiator unit (1') is formed, a control unit (4) and a switching unit (5); the antenna elements of the said radiator unit are adjacently arranged and evenly spaced in a circular configuration, and of these antenna elements, two adjacent elements belong simultaneously to one and the same active antenna unit (6), and the said two elements are chosen by means of the control unit and the switching unit to receive circularly polarized electromagnetic radiation from a desired direction, and to transmit the same to essentially the same direction. ...

ДВУХЛУЧЕВАЯ АНТЕННАЯ СТРУКТУРА С ИЗЛУЧЕНИЕМ КРУГОВОЙ ПОЛЯРИЗАЦИИ

Раскрыто антенное устройство, составленное по меньшей мере из первой, второй и третьей проводящих металлических пластин, размещенных в конфигурации параллелепипеда. Третья пластина задает нижнюю плоскость, и первая и вторая пластины вместе задают верхнюю плоскость, по существу, параллельную нижней плоскости. Первая и вторая пластины разделены щелью в верхней плоскости, и вторая и третья пластины соединены друг с другом заземляющим соединением. Первая пластина содержит первое активное плечо антенны, которое снабжено фидерным соединением, и вторая пластина содержит второе плечо антенны, которое может быть пассивным или активным. Антенное устройство создает диаграмму направленности излучения с круговой поляризацией, которая хорошо подходит для персональных навигационных устройств, и является значительно более компактным, чем существующие керамические патч-антенны, которые обычно используются в таких устройствах. 2 н. и 18 з.п. ф-лы, 20 ил.

Способ установки модуля антенной решетки

Изобретение в целом относится к области антенных систем для использования в системе контроля товаров. Модуль антенной решетки для системы связи на борту грузового судна содержит по меньшей мере первый (11), второй (12) и третий (16) антенные элементы, каждый из которых смонтирован на экране и содержит антенный фидер. Первый (11) антенный элемент наклонен по отношению ко второму (12) антенному элементу. Первый и второй антенные элементы расположены таким образом, что главный лепесток их диаграммы направленности обращен в направлении первого пути, соответствующего более длинной части, а третий (16) антенный элемент расположен так, чтобы излучать в основном в направлении второго пути, противоположного первому пути. 13 з.п. ф-лы, 16 ил.

АНТЕННАЯ СИСТЕМА (ВАРИАНТЫ)

... 1. Антенная система, содержащая: микрополосковый излучатель круговой поляризации, состоящий из излучающей пластины, расположенной над экранирующей пластиной, и петлевого излучателя, расположенного вокруг микрополоскового излучателя круговой поляризации соосно с ним.2. Антенная система по п.1, также включающая линию передачи, подключенную к петлевому излучателю, а также схему питания, подключенную к линии передачи для обеспечения возбуждения петлевым излучателем поля круговой поляризации.3. Антенная система по п.2, в которой схемы питания обеспечивают возбуждение волн правой круговой поляризации в направлении максимума диаграммы направленности.4. Антенная система по любому из пп.1-3, в которой микрополосковый излучатель круговой поляризации возбуждается с использованием системы штырей или щелей.5. Антенная система по п.4, отличающаяся тем, что дополнительно содержит схему деления к выходам которой подключены упомянутые схемы питания петлевого излучателя и микрополоскового излучателя круговой ...

АНТЕННАЯ RFID-СИСТЕМА

... 1. Антенная RFID-система, включающая в себя следующие признаки: ! - предусмотрено, по меньшей мере, одно антенное RFID-устройство (1) для системы идентификации товаров (WIS-системы), причем, по меньшей мере, одно антенное RFID-устройство (1) выполнено с возможностью считывания информации со снабженных микрочипом RFID-этикеток (меток); ! - по меньшей мере, оба антенных RFID-устройства (15, 1) расположены с одной стороны или с двух противоположных сторон относительно простирающегося в направлении (3') прохода пути (3) прохода, образуя зону контроля; ! - антенное RFID-устройство (1) содержит, по меньшей мере, две или более патч-антенн (21), расположенных с одной стороны контролируемого пути (3) прохода; ! - патч-антенны (21) антенного RFID-устройства (1) ориентированы параллельно или, в основном, параллельно или одним компонентом параллельно пути (3) прохода, ! отличающаяся тем, что она включает в себя следующие дополнительные признаки: ! - по меньшей мере, обе или более патч-антенн (21) образуют ...

Etikettantenne, Etikett und RFID-System mit dieser Antenne

RFID-Fördersystem und Verfahren

Patchantenne sowie Verfahren zur Frequenzabstimmung einer derartigen Patchantenne

Eine verbesserte Patchantenne zeichnet sich durch folgende Merkmale aus: an zumindest einem in Umfangsrichtung liegenden Randabschnitt (13c) und vorzugsweise an zumindest zwei und insbesondere vier in Umfangsrichtung versetzt liegenden Randabschnitten (13c) der Strahlerfläche (7) ist mindestens eine vom betreffenden Randabschnitt (13c) ausgehende Schlitzanordnung (15) vorgesehen, die Schlitzanordnung (15) weist in vom zugehörigen Randabschnitt (13c) wegweisender Schlitzrichtung (15') zumindest eine geschlossene Schlitzausnehmung (115; 115a, 115b, ..., 115f) auf, und die zumindest eine geschlossene Schlitzausnehmung (115; 115a, 115b, ..., 115f) ist über einen dem zugehörigen Randabschnitt (13c) zugewandt liegenden, elektrisch-leitfähigen Quer- oder Abstimmsteg (17) geschlossen.

PATCHGESPEISTE, GEDRUCKTE ANTENNE

ANTENNE, ZIRKULAR POLARISIERTE PATCHANTENNE, UND FAHRZEUG MIT DENSELBEN

Eine Antenne, eine zirkular polarisierte Patchantenne und ein Fahrzeug mit denselben werden bereitgestellt. Die Antenne umfasst ein Substrat, einen Erdungsabschnitt, der auf einer ersten Fläche des Substrats ausgebildet ist, und einen zweiten Strahler mit einer Vielzahl von Patches, der auf einer zweiten Fläche des Substrats ausgebildet ist. Darüber hinaus ist ein erster Strahler in einer Peripherie des zweiten Strahlers mit einer Lücke von dem zweiten Strahler ausgebildet und eine Speisungssonde auf dem ersten Strahler angeordnet, um Energie dem ersten Strahler direkt und dem zweiten Strahler durch Kopplung zuführen zu können.

CPW-Gespeiste zirkular polarisierte Appliqué-Antennen für GPS- und SDARS-Bänder

Eine flexible Dünnschichtantenne, die spezielle Anwendung findet, um an ein Fahrzeugglas geklebt zu werden, wobei die Antenne zum Empfangen rechts- oder linksdrehend zirkular polarisierter Signale zum Beispiel von GPS- und SDARS-Satelliten ausgelegt ist. Die Antenne ist eine gedruckte planare Antenne, die an einem Substrat ausgebildet ist, und eine Masseplatte umfasst, die einen Außenumfangsabschnitt aufweist, der einen Schlitz darin definiert, und eine Mehrzahl von Seiten aufweist. Eine Abstimm-Blindleitung in Form einer T-Leitung erstreckt sich von einer der beiden Seiten in den Schlitz, eine gekrümmte Abstimm-Blindleitung in Form einer Stichleitung erstreckt sich von einer Ecke, in welcher zwei Seiten des Umfangsabschnitts zusammentreffen, und erstreckt sich in den Schlitz, und ein Strahlerelement, das vom Umfangsabschnitt elektrisch isoliert ist, erstreckt sich in den Schlitz. Der Umfangsabschnitt ist so ausgelegt, dass er zirkular polarisierte Signale erzeugt, die durch das Strahlerelement ...

MIKROWELLENANTENNE MIT PATCH-MONTAGEVORRICHTUNG

Antenna

An antenna comprising a feedline 101 with perpendicular arms 1011, 1012 and a radiator 103 separated by a ground plane 102 which contains a slot 1021 and is spaced from and parallel to the feedline 101 and the radiator 103, where when the feedline 101 is projected onto the ground plane 102 the slot intersects with the perpendicular feedline arms 1011, 1012. The feedline 101 is electromagnetically coupled to the slot 1021 and may be formed from a microstrip or stripline. The slit 1021 may be arcuate, elliptical or circular and have a bisector equal to the bisector of the feedline arms 1011, 1012. There may be additional slots in the ground plane for dual frequencies, such as Wi-Fi and GSM, and additional slots in the radiator 103. The radiator 103 may be divided into inner and outer circular sections and printed or plated onto a case housing the antenna. The ground plane slot 1021 length may provide a 90 degrees phase shift between feed arms 1011, 1012 to produce circular polarisation.

Dual antenna structure having circular polarisation characteristics

An antenna device 5 comprises at least first 6, second 7 and third 8 conductive metal plates in a parallelepiped configuration. The third plate 8 defines a lower plane whilst the first and second plates 6, 7 define an upper plane which is parallel to the lower plane. The first and second plates 6, 7 are substantially a similar shape and length along the major axis of the antenna 5 and are separated by a slot 9 extending along the said major axis. The third plate 8 may be connected to ground and various ground and/or feed signal connections may be made to the first and/or second plates 6, 7 such that there is at least one active antenna element. The connections to the first and second plates 6, 7 may be arranged to provide circular polarisation characteristics similar to that of a ceramic patch antenna arrangement. The antenna 5 provides a compact antenna suitable for personal navigation devices. The antenna 5 may be formed from cutting and folding a single sheet of metal or by a number ...

Dual polarisation structure having circular polarisation characteristics

COMPACT MULTIPLE REEL ANTENNA

MINIATURIZED CIRCULAR LETTER-POLARIZED PATCHANTENNE

ALLROUND AERIAL ARRANGEMENT FOR RECEIVING TERRESTRIAL AND SATELLITE SIGNALS

Allround aerial arrangement for receiving terrestrial and satellite signals

Wide-angle circular polarization antenna

Wireless local loops including horizontally polarized antennas

MICRO WAVE PLANE ANTENNA OF PLURAL ARRAY ELEMENTS

Combination radio frequency identification and electronic article surveillance antenna system

An RFID antenna for use in an RFID-EAS antenna system is disclosed. In one embodiment, the RFID antenna has a first patch antenna element and a second patch antenna element that are electrically connected and coplanar. The RFID antenna also has a reference ground plane coplanar with the patch antenna elements.

POLARIZED MICROSTRIP ANTENNA

A microstrip antenna is disclosed having an etched metal radiator element including a polarizing patch consisting of a two dimensional removal of metallization from the central portion of the radiator element with one dimension of the polarization patch being greater than the other dimension e.g. an elongated rectangle and selectively oriented with respect to the input axis whereby, for example, circular polarization is achieved by means of orienting the polarization patch substantially 45.degree. with respect to the input axis.

WIRELESS TRANSCEIVER APPARATUS AND BASE STATION

The present invention relates to the field of communications. Disclosed are a wireless receiving/transmitting device and a base station. The wireless receiving/transmitting device comprises: a metal carrier and an antenna unit; the antenna unit comprises a feeder structure and a radiation patch; the metal carrier is provided with a recess, and the antenna unit is disposed in the recess; the radiation patch feeds by means of the feeder structure and is grounded. The present invention resolves the problem of large space occupation of the wireless receiving/transmitting device, thereby realizing the technical effect of reducing the space occupied by the wireless receiving/transmitting device. Embodiments of the present invention are used for information receiving and transmitting by the wireless receiving/transmitting device.

ANTENNA PANE

The present invention relates to a windscreen antenna (100), at least comprising: - an inner panel (1) having an internal surface (IV), - an antenna structure (4) consisting of an electrically conductive paste burned into the internal surface (IV) of the inner panel (1), and - a dielectric support element (9) which is connected by means of an external surface (V) to the internal surface (IV) of the inner panel (1) and has an electrically conductive base plate (5) on an internal surface (VI), wherein the base plate (5) is arranged at least in the region of the orthogonal projection of the antenna structure (4) relative to the inner panel (1).

ANTENNA PANE

The present invention relates to an antenna pane (100), at least comprising: - an inner pane (1) having an internal surface (IV), - an antenna structure (4) made of an electrically conductive paste fired on the internal surface (IV) of the inner pane (1), and - a dielectric carrier element (9) that is connected via an external surface (V) to the internal surface (IV) of the inner pane (1) and has an electrically conductive base plate (5) on an internal surface (VI), wherein the base plate (5) is arranged at least in the region of the orthogonal projection of the antenna structure (4) relative to the inner pane (1).

APERTURE-COUPLED ANTENNA

The present invention provides an aperture-coupled antenna (100) having a first radiation electrode (130), an earth surface (110) and a waveguide (140), which is designed to supply power to the antenna. The waveguide (140) is arranged, spaced apart from the earth surface (110), on a first side of the earth surface (110), and the first radiation electrode (130) is arranged, spaced apart from the earth surface (110), on a second side of the earth surface (110). The earth surface (110) has an aperture (120), which comprises a first slot (150) in the earth surface (110), a second slot (152) in the earth surface (110) and a third slot (154) in the earth surface (110). The first slot (150) and the second slot (152) together form a slot in the form of a cross. The third slot (154) runs through a point of intersection between the first slot (150) and the second slot (152). The waveguide (140) and the radiation electrode (130) are also arranged such that power from the waveguide (140) can be coupled ...

THREE DIMENSIONAL MICROSTRIP PATCH ANTENNA

An antenna assembly comprises a dome-like substrate with a ground plane layer on the interior surface of the substrate and a radiative patch on the outer surface of the substrate. The cavity defined by the substrate is closed off by a base having a conductive layer that is connected to the ground plane layer, thereby to isolate the cavity and circuit elements that may be disposed therein. Preferably the substrate has a polyhedral form and the radiative patch is a polygon having apex portions that extend down over the side surface of the substrate to enhance the sensitivity of the antenna at low elevations.

MULTIPLE PARASITIC COUPLING TO AN OUTER ANTENNA PATCH ELEMENT FROM INNER PATH ELEMENTS

An antenna array is disclosed wherein radiators are parasitically coupled to eac h other forming an efficient feed network. Parasitic coupling of patches is arrang ed so that some patches are fed by a plurality of other patches which are parasitically cou pled thereto. The resulting array is low profile and high gain. By providing patches on different layers with different dimensions, a broadband design for the antenna a rray is achieved.

VEHICLE PANEL ANTENNA

Patch antenna device and radio wave receiver

A patch antenna device of the present invention includes a rectangular dielectric plate, a planar emission electrode, a grounding electrode and a power supply member. The planar emission electrode is provided with a slit at each position corresponding to each short side of the rectangular dielectric plate and both slits extend toward an opposing short side each other and arranged symmetrically. A power supply position of the power supply member is deviated from a center of the planar emission electrode so as to obtain circular polarization characteristics. As a result a patch antenna device having a high gain and circular polarization characteristics can be realized by a simple structure.

STRUCTURE Of ANTENNA INTENDED TO RADIATE SIGNALS POLARIZE ORTHOGONALLY

AERIAL ELEMENT HAS MICROBANDE, HAS SURGES RESONANT REPLIEE

AGILE ANTENNA AND FREQUENCY BIAS.

L'invention concerne un appareil comprenant ■ un dispositif d'antenne comportant - une surface conductrice (4) constituant la "masse", - un plateau principal conducteur (5) ayant un axe de symétrie (AA), séparé de la masse par un diélectrique (1), - deux zones de court-circuit (7, 8) connectées à la masse et débouchant au voisinage de deux côtés du plateau principal symétriquement l'une de l'autre par rapport à l'axe de symétrie, - un premier et un deuxième ensemble d'interrupteurs (17, 18) connectant respectivement la première et la deuxième zone de court-circuit (7, 8) avec le côté voisin correspondant du plateau principal, et ■ des moyens (17, 18) de commande agencés pour commander l'ouverture et la fermeture des interrupteurs des premier et deuxième ensembles, de telle sorte que lorsque les interrupteurs de l'un des deux ensembles sont ouverts, les interrupteurs de l'autre ensemble sont fermés afin de conférer au dispositif d'antenne une agilité en polarisation ...

CIRCULARLY POLARIZED SPIDRON ANTENNA

The present invention relates to a circularly polarized spidron antenna and more specifically, to a dual detection circularly polarized spidron antenna comprising: a dielectric substrate; a ground plane formed on the top surface of the dielectric substrate; a main slot formed on the ground plane and having a spidron fractal shape formed by cutting an upper corner of a first right-angled triangle; an L-shaped slit formed at a side corresponding to the height of the first right-angled triangle of the main slot outward; a coplanar waveguide (CPW) feeding line formed on the same plane as the ground plane and having an end thereof within the main slot; and a microstrip feeding line formed below the bottom plane of the dielectric substrate, and capable of simultaneously inducing right-hand circular polarization and left-hand circular polarization characteristics in the same frequency band. COPYRIGHT KIPO 2016 ...

A PATCH ANTENNA SYNCHRONOUS GENERATING LINEARLY POLARIZED WAVE AND CIRCULARLY POLARIZED WAVE

Circularly polarized antenna

IMPROVED OMNI-DIRECTIONAL ANTENNA SYSTEM FOR WIRELESS COMMUNICATION

A wireless device having an improved antenna system is disclosed comprising one or more antenna, preferably circularly polarized antenna, for transmitting or receiving a signal, and one or more floating ground planes, wherein the floating ground plane preferably is electrically isolated from and in sufficient proximity to the antenna so that it is inductively coupled to the antenna. The floating ground plane may comprise one or more of a strip, band, foil, plate, block, wire mesh, sheet or coating of conductive material and, for example, may be a relatively thin copper strip, band, foil or coating. The circularly polarized antenna, preferably comprises a fiat planar shaped radiating element sized and configured to resonate at a predetermined, desired frequency, frequencies or band of frequencies, and a flat planar shaped antenna ground, both radiating element and antenna ground formed on the same printed circuit board. The radiating element is electrically isolated from the antenna ground ...

GPS, GSM, AND WIRELESS LAN ANTENNA FOR VEHICLE APPLICATIONS

A Global Positioning System (GPS), Global System for Mobile Communications (GSM), wireless local area network (WLAN) antenna, including a dielectric board including a ground plane; a first antenna trace line disposed on a first portion of the dielectric board and in electrical contact with the dielectric board, the first antenna trace line including at least one first meandered trace for transmitting and receiving a WLAN radio frequency signal; a second antenna trace line disposed on a second portion of the dielectric board and in electrical contact with the dielectric board, the second antenna trace line including at least one second meandered trace for transmitting and receiving a GSM radio frequency signal; a GPS antenna for receiving radio frequency signals from at least one global positioning satellite; and a vehicle mountable housing for enclosing the dielectric board, the first antenna trace line, the second antenna trace line, and the GPS antenna.

PATCH FED PRINTED ANTENNA

The disclosure relates to a printed antenna fed by a patch. The printed antenna includes at least one ground opening in it, this radiating opening being arranged to radiate into the space situated above said ground plane, and a conductive feed patch place beneath said radiating opening and insulated by a dielectric layer, in such a way that the patch is coupled to the radiating opening in order to feed the radiating opening without parasitic radiation being excited. It also concerns printed antennas with two polarisation directions and corresponding antenna arrays.

AN ANTENNA SYSTEM AND RF SIGNAL INTERFERENCE/JAMMING ABATEMENT IN A TERRESTRIAL GPS APPARATUS AND METHOD

Disclosed is an antenna system including a Luneberg Lens having a spherically shaped outer surface and a spherically shaped focal surface spaced from its outer surface with a plurality of patch antenna elements disposed along the focal surface of the Luneberg Lens; and a power combiner for combining signals received by said plurality of patch antenna elements. The disclosed antenna system may be used a part of a robust GPS system having a plurality of GPS satellites each transmitting a GPS signal; a plurality of airborne GPS platforms, each GPS platform including a GPS transmitter for transmitting its own GPS signal, the GPS signals being transmitted from the plurality of airborne GPS platforms being differentiated from the GPS signals transmitted by visible GPS satellites; and at least one terrestrially located GPS receiver for receiving the GPS signals transmitted by visible ones of the GPS satellites and by visible ones of said airbortne GPS platforms. An eventual jammer would need to ...

Dual polarized microstrip patch antenna array for PCS base stations

A dual, preferably orthogonally polarized microstrip patch antenna which includes a layer of electrically insulating material in the form of a printed circuit board. First and second sets of electrically conductive patches, preferably of copper, are disposed on one surface of the electrically insulating material, the first set adapted for transmission and/or reception of electromagnetic radiations polarized in a first direction and the second set adapted for transmission and/or reception of electromagnetic radiations polarized in a second direction. Patches of the first set are interlaced with patches of the second set. A feed for each of the patches is coupled to the opposing surface of the electrically insulating material which includes a first plurality of slots, one associated with each of the patches of the first set for polarizing the patches of the first set in the first direction and a second plurality of slots, one associated with each of the patches of the second set for polarizing ...

Flat panel antenna

A flat panel antenna includes a horizontal ground plan, a vertical ground plane, a radiation metal member disposed over and in parallel with the horizontal ground plane; the vertical ground plane being disposed at a level higher than that of the radiation metal member, an extension member extending from the vertical ground plane in the direction of and in parallel with the radiation metal member to penetrate into the radiation metal member for a proper length for precise control impedance of the antenna for the normalized impedance to approach 1, i.e. 50-ohm of the system impedance of the antenna to upgrade radiation efficiency of the flat panel antenna.

CIRCULARLY POLARISED ANTENNA

A circularly polarised patch antenna includes: an antenna electrode; a ground section; a substrate, which is sandwiched between the antenna electrode and the ground section and which has insulating properties, a predetermined dielectric constant and single-axis magnetic anisotropy for a plurality of different magnetization directions; and a power feed pin which is electrically connected to the antenna electrode.

ANTENNA STRUCTURE AND WIRELESS COMMUNICATION DEVICE USING THE SAME

An antenna structure providing an improved GPS communication includes a substrate having a first surface and a second surface opposite to the first surface, a first antenna attached to the first surface, and a second antenna attached to the second surface. The first antenna and the second antenna generate waves of equal but opposite amplitude and linear orthogonal polarization thereby forming an antenna with circular polarity.

Surface Wave Antenna Using Graded Dielectric Material

A surface wave antenna system is presented. The surface wave antenna system is configured to be coupled to a surface and includes an antenna and a radiation modifier. The radiation modifier includes a material having a graded dielectric constant. A final portion of the radiation modifier includes material having a dielectric constant that produces a signal phase velocity in signals emitted from the radiation modifier that is substantially equal to a phase velocity of signals on the surface. 1. A surface wave antenna system configured to be coupled to a surface , comprising:an antenna; anda radiation modifier comprising a material having a graded dielectric constant, where the graded dielectric constant of the material reduces signals emitted from or received by the antenna system in directions other than a desired direction of propagation and increases the gain of the antenna system in the desired direction of propagation, wherein a final portion of the radiation modifier comprises material having a dielectric constant that produces a desired phase velocity in signals emitted from or received by the radiation modifier.2. The surface wave antenna system of claim 1 , wherein the radiation modifier is configured as a high temperature radome.3. The surface wave antenna system of claim 1 , wherein the radiation modifier comprises a plurality of layers of materials claim 1 , each material having a differing dielectric constant.4. The surface wave antenna system of claim 3 , wherein at least some of the plurality of layers comprise silicon nitride claim 3 , each such layer having a differing porosity.5. The surface wave antenna system of claim 1 , wherein the radiation modifier has a dielectric constant that varies along more than one dimension.6. The surface wave antenna system of claim 1 , wherein the phase velocity of signals emitted by the radiation modifier is less than the speed of light in a medium adjacent to a portion of the radiation modifier from which the ...

Flat panel antenna

A flat panel antenna includes a horizontal ground plan, a vertical ground plane, a radiation metal member disposed over and in parallel with the horizontal ground plane; the vertical ground plane being disposed at a level higher than that of the radiation metal member, an extension member extending from the vertical ground plane in the direction of and in parallel with the radiation metal member to penetrate into the radiation metal member for a proper length for precise control impedance of the antenna for the normalized impedance to approach 1, i.e. 50-ohm of the system impedance of the antenna to upgrade radiation efficiency of the flat panel antenna.

Antenna unit having electrically steerable transmit and receive beams

The present invention relates to an antenna unit (101) capable of operating in a satellite communication mode. The antenna unit (101) comprises interleaved circular patches for transmitting (102) and receiving (103) radio signals periodical arranged in a first and a second layer. The patches for transmitting (102) in the first layer are arranged in a first lattice (104) and the patches for receiving (103) in the second layer are arranged in a second lattice (105). The first lattice (104) is interleaved with the second lattice (105). Every other patch for transmitting (102) in the first layer has a corresponding patch for receiving (103) in the second layer, where each of the patches for receiving (103) are arranged in such a way that a center axis of the patches for receiving (103) coincide with a center axis of the corresponding patch for transmitting (102).

Dual asymmetrically fed electric microstrip dipole antennas

Circularly polarized microstrip antennas consisting of thin electrically conducting, square-shaped radiating elements formed on one surface of a dielectric substrate and having a ground plane on the opposite surface of the substrate. Two feed points are used to provide a circular polarized radiation pattern. The feed points are located along the centerlines of the antenna length and width or along the diagonal lines of the element and the input impedances can be varied by moving the feed points along both centerlines or both diagonal lines from the centerpoint of the element. The antennas can be notched in from the edges of the radiating element along the centerlines of the element width and length, or along opposite diagonal lines of the element, to the optimum input impedance match feed point.

CIRCULARLY-POLARIZED PATCH ANTENNA

In one example, a patch antenna includes a conductive ground plane layer, a conductive circular patch layer, a dielectric layer, a grounding connection, and a RF feed. The conductive circular patch layer includes a plurality of voids. The dielectric layer is disposed between and contacts each of the ground plane layer and the circular patch layer. The grounding connection extends from the ground plane layer through the dielectric layer and contacts the circular patch layer at a grounding location of the circular patch layer. The RF feed extends through the ground plane layer and the dielectric layer and contacts the circular patch layer at a RF feed location of the circular patch layer. The RF feed location is offset from a central axis of the circular patch layer.

POLARIZED ANTENNA WITH REDUCED SIZE

A polarized antenna with reduced size includes a substrate, a ground electrode, a radiation electrode and a side-feeding electrode. The substrate is made of dielectric materials, and the ground electrode, the radiation electrode and the side-feeding electrode are made of electrically conductive materials. By forming a plurality of characteristics-setting elements within the radiation electrode, the polarized antenna can have the advantages of wider bandwidth and smaller size. By changing the design of characteristics-setting elements, the circular polarization characteristics of the antenna can be adjusted or a linear polarization antenna can be obtained. The present invention can be implemented to become a through-hole device or an SMD device.

VEHICULAR ANTENNA

Disclosed is a vehicular antenna, which includes an antenna module having an antenna patch, a reflector installed to be spaced apart from the antenna patch by a predetermined distance to maximize a gain of an electromagnetic wave radiated from the antenna patch at a specific angle, and a dielectric substance inserted and installed between the antenna patch and the reflector.

Global positioning system antenna

A global positioning system antenna includes a radiator. The radiator includes a base section, an extension section connected to an edge of the base section, a first curved section connected to an edge of the extension section, and a second curved section connected to a distal end of the first curved section. The first curved section and the base section define a slot therebetween. The second curved section defines a first gap and a second gap thereon. The first gap and the second gap face each other.

RFID Microstip Interrogator Antenna System

The present invention overcomes the above-described and other problems by providing an improved edge-fed microstrip patch antenna, a dielectric substrate with integrated ground plane and enclosure that with a printable surface. An RFID microstrip patch antenna ( 21 ) system produces an antenna that is significantly less expensive to manufacture and install than existing commercial solutions. In doing so, the present invention enables the use of commodity, low cost products such as corrugated paperboard foils and extruded polystyrene and assembly methods such as graphics printing.

Single-feed multi-frequency multi-polarization antenna

An antenna capable of receiving both left-hand circularly polarized (LHCP) signals and right-hand circularly polarized (RHCP) signals, and outputting both signals on a single feed. The antenna includes two coplanar concentric patches. The inner patch is substantially square. The outer patch surrounds the inner patch to define a gap therebetween. A resonant parallel inductive/LC circuit interconnects the two patches. The circuit includes a plurality of printed traces within the gap and interconnecting the concentric patches. The gap and each trace function as an LC circuit.

Reconfigurable Polarization Antenna

Embodiments include antenna systems capable of producing high quality circularly, elliptically, or linearly polarized radiation. Embodiments include single feed (single-ended or differential) or multiple feed antennas. Embodiments can be electronically configured to adjust the type of polarization of the antenna system. In an embodiment, the polarization of the antenna system is adjusted by adjusting at least the position of a grounding node relative to the position of a feed node. In another embodiment, the polarization of the antenna system is adjusted by configuring one or more input nodes of the antenna between feed nodes, grounding nodes, and open nodes. In another embodiment, the polarization of the antenna system is adjusted by adjusting the phase of a single differential feed of the system.

Contactless connector

A contactless connector includes a transmitter having a first transmit integrated circuit generating a first signal and a second transmit integrated circuit generating a second signal. A first pick-up antenna is adjacent the first transmit integrated circuit and conveys the first signal along a first transmission line to a first propagation antenna. A second pick-up antenna is adjacent the second transmit integrated circuit and conveys the second signal along a second transmission line to a second propagation antenna. The first and second propagation antennas transmit the first and second signals to a propagation path at different and separable polarizations to allow duplex communication with the propagation path.

Planar array feed for satellite communications

An apparatus, system, and method are disclosed for wireless communications. A planar antenna element is disposed on a surface of a substrate. The planar antenna element comprises an electrically conductive material and has a circular polarization. The substrate comprises a dielectric material. The planar antenna element may be arranged in a planar antenna array as a feed for a reflector antenna or as an aperture array. The planar antenna element may comprise a slot patch antenna element with a slot in the electrically conductive material of the planar antenna element circumscribing the planar antenna element. The slot exposes the dielectric material of the substrate. A ground plane may be disposed on the surface of the substrate. The ground plane comprises an electrically conductive material. The slot may be disposed between the ground plane and the patch antenna element.

DUAL ANTENNA STRUCTURE HAVING CIRCULAR POLARISATION CHARACTERISTICS

There is disclosed an antenna device made up of at least first, second and third conductive metal plates arranged in a parallelepiped configuration. The third plate defines a lower plane and the first and second plates together define an upper plane substantially parallel to the lower plane. The first and second plates are separated by a slot in the upper plane, and the second and third plates are connected to each other by a grounding connection. The first plate comprises a first, active antenna arm that is provided with a feed connection, and the second plate comprises a second antenna arm that may be passive or active. The antenna device generates a circularly polarised radiation pattern that is good for personal navigation devices, while being significantly more compact than existing ceramic patch antennas that are typically used in these devices. 129-. (canceled)30. An antenna assembly comprising:a first conductive plate and a second conductive plate both positioned in a first plane; anda third conductive plate positioned in a second plane substantially parallel to the first plane, the three conductive plates being assembled to form a parallelepiped antenna configuration having a first side in the first plane, a second side in the second plane and four inter-plane sides intersecting the first and second sides, each of the first conductive plate and the second conductive plate having one or more conductive connections, at least one of the conductive connections being formed along one of the four inter-plane sides of the parallelepiped antenna configuration, each of the four inter-plane sides having no more than one conductive connection formed along the same inter-plane side.31. The antenna assembly of wherein the first conductive plate claim 30 , the second conductive plate claim 30 , and the third conductive plate are formed from a continuous piece of metal.32. The antenna assembly of wherein the first conductive plate claim 30 , the second conductive plate ...

Patch Antenna with Capacitive Elements

Disclosed is a micropatch antenna comprising a radiating element and a ground plane separated by an air gap. Small size, light weight, wide bandwidth, and wide directional pattern are achieved without the introduction of a high-permittivity dielectric substrate. Capacitive elements are configured along the perimeter of at least one of the radiating element and ground plane. Capacitive elements may comprise extended continuous structures or a series of localized structures. The geometry of the radiating element, ground plane, and capacitive elements may be varied to suit specific applications, such as linearly-polarized or circularly-polarized electromagnetic radiation. 142-. (canceled)43. A circularly-polarized micropatch antenna comprising:a radiating element comprising a first circular region having a first circumference;a ground plane comprising a second circular region having a second circumference greater than the first circumference, wherein the second circular region is enclosed by an outer region having an outer perimeter;an air gap between the radiating element and the ground plane;a first set of capacitive elements consisting of a first circular array of localized structures disposed along the first circumference; anda second set of capacitive elements consisting of a second circular array of localized structures disposed along the second circumference; a portion of each of the capacitive elements in the first set of capacitive elements is enclosed by the second set of capacitive elements;', 'there are no other capacitive elements disposed on the radiating element; and', 'there are no other capacitive elements disposed on the ground plane., 'wherein44. The circularly-polarized micropatch antenna of claim 43 , wherein the outer perimeter has a circular geometry.45. The circularly-polarized micropatch antenna of claim 43 , wherein the outer perimeter has a square geometry.46. The circularly-polarized antenna of claim 43 , further comprising:an auxiliary ...

Planar antenna having a widened bandwidth

A planar antenna with widened bandwidth comprises at least one first conducting element disposed above an earth plane and separated from the latter, and means for exciting said at least first conducting element, configured to excite two distinct orthogonal resonant modes, wherein said at least first conducting element is embodied by a substrate comprising at least one thin layer of an anisotropic material with relative permeability of greater than 10 for 2 GHz. The antenna applies notably to mobile communications terminals.

CIRCULAR POLARIZATION ANTENNA AND DIRECTIONAL ANTENNA ARRAY HAVING THE SAME

An antenna array () includes a horizontal ground layer () having a central hole (), a radiation layer parallel to the ground layer, and a coaxial cable () assembled to the ground layer. The cable includes a central conductor (), an insulated layer () coated on the central conductor, and a grounding coat () coated on the insulated layer. The central conductor extends through the central hole from a bottom side of the ground layer and keeping insulated from the ground layer. The radiation layer includes a number of radiation units () which are coplanar with each other and parallel to the ground layer. Each radiation unit has a nail () extending downwardly towards the ground layer. The nail resonates with the central conductor when the antenna array is transmitting or receiving radio frequency signals. 1. An antenna array comprising:a horizontal ground layer having a central hole;a radiation layer spaced from the ground layer; anda coaxial cable including a central conductor, an outer insulated layer, and a grounding coat outside the insulated layer, the central conductor upwardly extending through the central hole from a bottom side of the ground layer and insulated from the ground layer, said grounding coat electrically contacting with said ground layer; whereinthe radiation layer includes a plurality of radiation units coplanar with one another and each parallel to the ground layer, the antenna array further including a plurality of nails each extending downwardly from the radiation unit to the ground layer, said nails resonated with the central conductor.2. The antenna array as claimed in claim 1 , further including a reflection layer positioned between the radiation layer and the ground layer claim 1 , said reflection layer having a plurality of locating holes claim 1 , and wherein the nail extends through a corresponding hole without contacting the reflection layer.3. The antenna array as claimed in claim 2 , wherein each of the reflection layer and the ground ...

MICROSTRIP PATCH ANTENNA APERTURE COUPLED TO A FEED LINE, WITH CIRCULAR POLARIZATION

An antenna is disclosed. The antenna comprises a feedline (), a ground plane () and a radiator (). The feedline has a path in a first plane, the path having a first arm () and a second arm () perpendicular to the first arm. The ground plane is provided in a second plane spaced apart from, and parallel to, the first plane. The ground plane has a ground plane slot () therein with a path in the second plane. The path of the ground plane slot intersects the path of the feedline at a first position on the first arm and a second position on the second arm when the second plane is projected into the first plane. The radiator is separated from the feedline by the ground plane, and is provided in a third plane spaced apart from, and parallel to, the second plane. 1. An antenna comprising:a feedline having a path in a first plane, the path having a first arm and a second arm perpendicular to the first arm;a ground plane provided in a second plane spaced apart from, and parallel to, the first plane, the ground plane having a ground plane slot therein with a path in the second plane, wherein the path of the ground plane slot intersects the path of the feedline at a first position on the first arm and a second position on the second arm when the second plane is projected into the first plane; anda radiator separated from the feedline by the ground plane, the radiator being provided in a third plane spaced apart from, and parallel to, the second plane.2. The antenna of claim 1 , wherein the ground plane slot is arcuate.3. The antenna of claim 2 , wherein the ground plane slot is an elliptical arc.4. The antenna of claim 2 , wherein the ground plane slot is a circular arc.5. The antenna of claim 4 , wherein the centre of the circular arc is at the intersection of the first arm and the second arm when the second plane is projected into the first plane.6. The antenna of or claim 4 , wherein the bisector of the arc angle of the ground plane slot bisects the angle between the first ...

NARROWBAND LEAKY WAVE ANTENNA FOR SENSING OBJECTS IN RELATION TO A VEHICLE

A periodic type leaky wave antenna, formed, e.g. on a printed circuit board, using cells of a filled circular structure. The leaky wave antenna may be formed in a series fed patch configuration. In order to achieve a high quality factor with respect to high frequency sensitive beam, a circular patch structure may be used, giving the best area to perimeter ratio. The cavity model based design considerations yield a proportional Q-factor expression with respect to the geometrical ratio. The antenna design takes into consideration effects such as degradation at broadside and circular polarisation, as well as input reflection coefficient. The tuning of a delay loop length yields a simple optimization criterion in order to achieve Q-balancing, circular polarisation and a matched configuration. 1. An antenna element comprising a cell of filled circular geometry adapted to operate , when driven in use , in the E01 mode.2. The antenna element of claim 1 , further including a stub configuration adapted to achieve a matched network using a mode rotation condition claim 1 , wherein said cell is coupled to a feed line at a first point on a perimeter of the cell such that the feed line extends tangentially to the cell.3. The antenna element of claim 1 , further including a delay loop configured for mode rotation.4. The antenna element of claim 3 , wherein the delay loop is adapted to achieve Q-balancing claim 3 , mutual coupling compensation and/or tuning of a reflection coefficient within the delay loop length.5. The antenna element of claim 2 , wherein the cell is configured to be coupled to a feed line at a first point on a perimeter of the cell claim 2 , and the delay loop is attached to a side of the cell at points on the perimeter substantially opposite to the side containing the first point.6. The antenna element of claim 5 , wherein a y-direction is defined by or parallel to a line joining the center of the cell with said first point claim 5 , and a line through said ...

SURFACE-LINK ANTENNA ARCHITECTURE

Technologies for wireless network devices with surface-link antenna systems mounted on exterior surfaces of buildings are described. One wireless network device includes a housing with a circuit board and a first antenna port. A processor, a first antenna, a first wireless local area network (WLAN) radio, and a second WLAN radio are disposed on the circuit board. The first WLAN radio communicates with a radio of a client device using the first antenna over a first line-of-sight (LOS) or non-LOS wireless link (e.g., 2.4 GHz) inside the building. The second WLAN radio communicates with a radio of a second wireless network device using the second antenna over a second LOS wireless link (e.g., 5 GHz) that is external to the building. The first antenna is located inside the building and the second antenna is located along an exterior surface of the building. 1. A system with a surface-link antenna architecture , the system comprising:a first wireless network device comprising a first processor, a 2.4 GHz local area network (WLAN) radio, and a 5 GHz WLAN radio;a first antenna coupled to the 2.4 GHz WLAN radio;a first surface-link antenna coupled to the 5 GHz WLAN radio via a radio frequency (RF) cable and mounted on an exterior surface of a building;a second wireless network device comprising a second processor and a third WLAN radio; and establish a first wireless link between the 2.4 GHz WLAN radio and a WLAN radio of a client device located within the building, wherein the first wireless link is a line-of-sight (LOS) link or a non-line-of-sight (NLOS) link through or around at least one wall or floor of the building; and', 'establish a second wireless link between the 5 GHz WLAN radio and the third WLAN radio of the second wireless network device using a radiation pattern of electromagnetic energy focused along the exterior surface of the building, wherein the second wireless link is a LOS link., 'a second surface-link antenna coupled to the third WLAN radio via an RF ...

WIDEBAND, LOW PROFILE, SMALL AREA, CIRCULAR POLARIZED UHF ANTENNA

An antenna assembly includes a circularly polarized antenna housing configured to mount to a mounting surface. The antenna assembly also includes a vertical antenna housing having a first end proximate to the circularly polarized antenna housing, as well as a distal end extending normally from the circularly polarized antenna housing. 1. An antenna assembly , comprising:a circularly polarized antenna housing configured to mount to a mounting surface; anda vertical antenna housing having a first end proximate to the circularly polarized antenna housing and a distal end extending normally from the circularly polarized antenna housing;wherein the vertical antenna housing is spaced opposite of the mounting surface by the circularly polarized antenna housing.2. The antenna assembly of claim 1 , further comprising a second antenna housing parallel with the circularly polarized antenna housing claim 1 , and connected with the distal end of the vertical antenna housing.3. The antenna assembly of claim 1 , further comprising a circularly polarized antenna having:a set of radiators;a feed structure connected with the set of radiators and configured to transmit an electromagnetic signal to the set of radiators;a reactive impedance surface (RIS) positioned parallel with the radiators; anda conductive surface connected with the RIS by a set of posts.4. The antenna assembly of wherein conductive surface is spaced from the set of radiators by the RIS.5. The antenna assembly of claim 3 , further comprising a dielectric positioned between the radiators and the RIS and defining a gap distance between radiators and the RIS.6. The antenna assembly of wherein at least one of the gap distance or dielectric is selected to define a first electromagnetic wave propagation characteristic.7. The antenna assembly of wherein the set of posts space the conductive surface from the RIS.8. The antenna assembly of wherein a length of the set of posts is selected to define a second electromagnetic ...

Low-Profile Circularly-Polarized Single-Probe Broadband Antenna

Low-profile broadband patch antennas capable of radiating circularly polarized (CP) signals utilizing a single probe in accordance with embodiments of the invention are disclosed. In many embodiments, the patch antenna includes a ground plane, a patch plate, at least one dielectric or foam substrate, and a feed probe. In several embodiments, the patch plate includes a first plate and a second plate that can be connected via first and second connecting bars. In various embodiments, the connection of the first and second plates can expose first and second slots as further discussed below. In a variety of embodiments, the feed probe can be a coaxial cable having an inner and outer conductor where the inner conductor connects to the first plate and the outer conductor connects to the ground plane. 1. A circularly polarized patch antenna , comprising:a ground plane; the first and second plates are connected via a first connecting bar and a second connecting bar; and', 'the connection between the first and second plates via the first and second connecting bars exposes a first slot and a second slot;, 'a patch plate comprising a first plate and a second plate whereat least one dielectric substrate that separates the ground plane and the patch plate;a feed probe comprising an inner conduct and an outer conductor where the inner conductor is connected to the first plate and the outer conductor is connected to the ground plane;wherein the broadband patch antenna is configured to radiate a circularly polarized radio frequency (RF) signal.2. The broadband patch antenna of claim 1 , wherein the second slot has a length that is longer than the length of the first slot.3. The broadband patch antenna of claim 1 , wherein the second connecting bar separates the first and second slots.4. The broadband patch antenna of claim 3 , wherein the first and second connecting bars are equal in shape.5. The broadband patch antenna of claim 3 , wherein the first and second connecting bars are ...

VEHICLE ANTENNA PANE

A vehicle antenna pane for separating a vehicle interior from external surroundings is presented. The pane has features that include an inner pane, an outer pane, at least one intermediate layer that connects an internal surface of the outer pane areally to an external surface of the inner pane, a planar antenna structure that is arranged between the inner pane and the outer pane, and a base plate that is arranged on an interior side in relation to the antenna structure. A dielectric is arranged between the antenna structure and the base plate, the dielectric being provided by means of the inner pane and the intermediate layer. A base of the antenna structure has a ratio of a length to a width of 1:1 to 10:1. 116.-. (canceled)17. A vehicle antenna pane configured to separate a vehicle interior from external surroundings , the vehicle antenna pane comprising:an inner pane having an external surface,an outer pane having an internal surface,at least one intermediate layer that connects the internal surface of the outer pane areally with the external surface of the inner pane,a planar antenna structure that is arranged between the inner pane and the outer pane, anda base plate that is arranged on an interior side in relation to the planar antenna structure,whereinat least one dielectric is arranged between the planar antenna structure and the base plate,the at least one dielectric consists of at least one of: a) the inner pane, b) the at least one intermediate layer, and c) the inner pane and the at least one intermediate layer,{'sub': A', 'A, 'the planar antenna structure has a base with a ratio of a length lof the base to a width bof the base that is in a range of 1:1 to 10:1, and'}the base plate is arranged at least in a region of an orthogonal projection of the planar antenna structure relative to the inner pane.18. The vehicle antenna pane according to claim 17 , wherein at least one of the planar antenna structure and the base plate comprises one or more of:a ...

ANTENNA PANE

An antenna pane is presented. The antenna pane has features that include an inner pane having an internal surface, an antenna structure made of an electrically conductive paste that is printed and fired into the internal surface of the inner pane, and a dielectric carrier element that is connected to the internal surface of the inner pane via an external surface of the dielectric carrier element. In one aspect, an internal surface of the dielectric carrier element has an electrically conductive base plate that is arranged in a region of an orthogonal projection of the antenna structure relative to the inner panel. 116.-. (canceled)17. An antenna pane , comprising:an inner pane having an internal surface,an antenna structure made of an electrically conductive paste that is printed and fired on the internal surface of the inner pane,a dielectric carrier element that is connected to the internal surface of the inner pane via an external surface of the dielectric carrier element, the dielectric carrier element having an electrically conductive base plate on an internal surface of the dielectric carrier element,wherein the electrically conductive base plate is arranged at least in a region of an orthogonal projection of the antenna structure relative to the inner pane.18. The antenna pane according to claim 17 , wherein the electrically conductive base plate contains one of:a printed, electrically conductive paste, andan electrically conductive foil.19. The antenna pane according to claim 18 ,wherein the electrically conductive base plate contains a silver-containing screen printing paste, andwherein the electrically conductive foil is a metal foil.20. The antenna pane according to claim 19 , wherein the metal foil is one of: a) a copper foil claim 19 , b) a silver foil claim 19 , c) a gold foil claim 19 , and d) an aluminum foil.21. The antenna pane according to claim 17 , wherein the printed and fired electrically conductive paste has a thickness of 3 μm to 20 μm and a ...

COMPACT CIRCULAR POLARIZATION ANTENNA SYSTEM WITH REDUCED CROSS-POLARIZATION COMPONENT

A compact GNSS antenna system reduces directional diagram level in the rear hemisphere primarily for LHCP component. It can be used for reducing multipath reception. A dual-band antenna system for receiving radio signals includes an active Microstip Patch (MP) High Frequency (HF) circularly-polarized radiator disposed directly on a radiating patch of an active MP low-frequency (LF) radiator. The radiating patch of the active MP LF radiator serves as a ground plane of the MP HF radiator. A loop HF radiator is coaxially arranged around the ground plane of the MP HF radiator. A passive LF radiator is under the ground plane of the active MP LF radiator. A loop LF radiator is axially located around the ground plane of the active MP LF radiator. The loop HF radiator and the loop LF radiator are each excited by a transmission line and a power circuit to generate RHCP waves. 1. A dual-band antenna system for receiving radio signals comprising:an active Microstip Patch (MP) High Frequency (HF) circularly-polarized radiator disposed directly on a radiating patch of an active MP low-frequency (LF) radiator and receiving radio signals at a first frequency,wherein the radiating patch of the active MP LF radiator serves as a ground plane of the MP HF radiator and receives radio signals at a first frequency; anda loop HF radiator that is coaxially arranged around the ground plane of the MP HF radiator.2. The antenna system of claim 1 , further comprising a passive LF radiator under the ground plane of the active MP LF radiator.3. The antenna system of claim 1 , wherein a loop LF radiator is axially located around the ground plane of the active MP LF radiator.4. The antenna system of claim 3 , wherein the loop HF radiator and the loop LF radiator are each excited by a transmission line and a power circuit to generate circularly-polarized waves.5. The antenna system of claim 4 , wherein the circularly-polarized waves are RHCP waves in a direction to antenna DD maximum.6. The antenna ...

Energy harvesting circuit board

A circuit board for use in wireless energy harvesting applications is disclosed. The circuit board comprises a first plane and ground plane parallel to the first plane. The ground plane has a substantially rectangular shape with a length less than 1.38 λg and a width less than 0.92 λg. The first plane comprises an antenna, a feedline and a rectifier. The antenna is configured to receive an RF signal with a wavelength of λ 0 . The feedline is arranged to filter the received RF signal. The rectifier is arranged to generate a DC voltage from the received RF signal. The antenna, the feedline and the rectifier are arranged substantially co-linear along the first plane, and (formula I) where ε eff is the relative permittivity of a material between the first plane and the ground plane.

FULL DUPLEX USING OAM

A system for providing full-duplex communications comprises a first transceiver for simultaneously transmitting first signals having a first orthogonal function applied thereto on a first channel and simultaneously receiving second signals having a second orthogonal function applied thereto at a same time. A second transceiver simultaneously receives the first signals having the first orthogonal function applied thereto on the first channel and simultaneously transmits the second signals having the second orthogonal function applied thereto at the same time. Application of the first orthogonal function to the first signals and application of the second orthogonal function to the second signals prevents interference between the first signals and the second signals. 1. A system for providing full-duplex communications , comprising:a first transceiver for simultaneously transmitting first signals having a first orthogonal function applied thereto on a first channel and simultaneously receiving second signals having a second orthogonal function applied thereto at a same time;a second transceiver for simultaneously receiving the first signals having the first orthogonal function applied thereto on the first channel and simultaneously transmitting the second signals having the second orthogonal function applied thereto at the same time; andwherein application of the first orthogonal function to the first signals and application of the second orthogonal function to the second signals prevents interference between the first signals and the second signals.2. The system of claim 1 , wherein the first and the second orthogonal functions comprise orbital angular momentum functions.3. The system of claim 1 , wherein the first orthogonal function and the second orthogonal function comprise at least one of a Hermite-Gaussian function claim 1 , a Laguerre-Gaussian function claim 1 , an Ince-Gaussian function claim 1 , a Legendre function claim 1 , a Bessel function claim 1 , a ...

CIRCULARLY POLARIZED GLOBAL POSITIONING SYSTEM ANTENNA USING PARASITIC LINES

A circularly polarized Global Positioning System (GPS) antenna using parasitic lines, in which circular polarization is implemented to improve the efficiency of the reception of satellite signals by an antenna. For this, a circularly polarized GPS antenna using parasitic lines according to an embodiment includes a substrate, a radiating patch formed on a top of the substrate, a parasitic line part formed on the top of the substrate and disposed to be spaced apart from the radiating patch, thus implementing circular polarization characteristics by inducing reverse current, a ground plate formed on a bottom of the substrate, and a feeding via formed through the substrate and configured to electrically connect the ground plate to the radiating patch. 1. A circularly polarized Global Positioning System (GPS) antenna using parasitic lines , comprising:a substrate;a radiating patch formed on a top of the substrate;a parasitic line part formed on the top of the substrate and disposed to be spaced apart from the radiating patch, thus implementing circular polarization characteristics by inducing reverse current;a ground plate formed on a bottom of the substrate; anda feeding via formed through the substrate and configured to electrically connect the ground plate to the radiating patch.2. The circularly polarized GPS antenna of claim 1 , wherein the parasitic line part comprises:a first parasitic line formed on the top of the substrate and disposed on one side of the radiating patch while being spaced apart from the radiating patch; anda second parasitic line formed on the top of the substrate and disposed on a remaining side of the radiating patch while being spaced apart from the radiating patch.3. The circularly polarized GPS antenna of claim 2 , wherein the first parasitic line and the second parasitic line are formed symmetrically around the radiating patch.4. The circularly polarized GPS antenna of claim 2 , wherein the radiating patch is formed in a shape of a ...

APERTURE-COUPLED MICROSTRIP-LINE FEED FOR CIRCULARLY POLARIZED PATCH ANTENNA

An aperture coupled, single fed, microstrip line feed for a circularly polarized patch antenna is provided that can transmit transmissions with a low profile, wide impedance, and axial ratio bandwidths. The circularly polarized patch antenna includes a double sided printed circuit board with a non-linear slots etched into a ground plane of one side of the printed circuit board, with a printed microstrip line printed on the opposite side of the printed circuit board. The microstrip line can be hook shaped and intersect each of the slots. The non linear slots can be radially arranged around a locus or area on the circuit board. A metal patch can placed above the ground plane and electromagnetic waves emanating from the microstrip line can couple to the patch through the non-linear strips and excite the patch such that it radiates an electromagnetic transmission 1. A method , comprising:receiving a transmission at a microstrip line printed on a first side of a dielectric substrate, wherein the microstrip line is printed around a position on the dielectric substrate; andcoupling the transmission to a metal patch via non-linear slots etched into a ground plane on a second side of the dielectric substrate, wherein the non-linear slots are radially positioned around a locus of the ground plane and a top side of the ground plane is opposite the metal patch, wherein each non-linear slot of the non-linear slots has three linear segments, with a first linear segment radiating out from the locus, a second linear segment, connected to the first linear segment at a first right angle to the first linear segment, and a third linear segment joined to the second linear segment at a second right angle to the second linear segment, wherein the third linear segment extends in a same direction as an origin of the first linear segment, and wherein a portion of the transmission that couples to the metal patch via a non-linear slot of the non-linear slots is out of phase with respect to ...

WIDEBAND PLANAR CIRCULARLY POLARIZED ANTENNA AND ANTENNA DEVICE

A planar antenna includes a patch conductor formed on a front surface of a dielectric substrate so to be obliquely arranged in relation to an orthogonal axis of the dielectric substrate, the patch conductor having an elliptic shape; a microstrip line for feeding power to a bottom part of the patch conductor; and a ground conductor plate formed on a back surface of the dielectric substrate at a position thereof that is not overlapped with the patch conductor. By forming the patch conductor to be inclined only by θ, circular polarization characteristics in which axial ratio is 3 dB or less are given and the wideband such that the frequency bandwidth in which VSWR characteristics are 2 or less is 2 through 5 GHz and the wideband in UWB High band can be attained. The antenna characteristics in which any radiation directivity on the zenith direction does not depend on the frequency are obtained. 1. A wideband planar circularly polarized antenna comprising:a patch conductor formed on a front surface of a dielectric substrate, the patch conductor having a smooth contour and a shape having a major axis;a microstrip line continuously connected to a bottom part of the patch conductor, the microstrip line having a linear center axis; anda ground conductor plate formed on a back surface of the dielectric substrate of a bottom side of the patch conductor;wherein the patch conductor is inclined so that its major axis has a predetermined angle θ in relation to an orthogonal direction of the center axis of the microstrip line; and wherein the ground conductor plate has an approximately rectangular outer shape and has a cut portion in a contour thereof, the cut portion being along the contour of the bottom part of the patch conductor with a gap, and a diagonal line of the ground conductor plate opposed to an inclination of the major axis of the patch conductor being crossed with the major axis of the patch conductor almost at a right angle.2. The wideband planar circularly polarized ...

Frequency diverse phased-array antenna

A frequency diverse phased-array antenna operates simultaneously in two bands. A checkerboard of antenna elements for a first wavelength is offset with a second checkerboard of second antenna elements. Within the substrate is a three dimensional checkerboard of ground planes and ground walls which provide signal isolation between the bands. Multiple ground planes optimize operation at the several frequencies. Phased-array elements are isolated by a conductive wall in a multi-layer substrate. Orthogonal polarization of antenna patches further improve signal discrimination. Below the surface layer, another conductive wall isolates each quadrature hybrid. The conductive wall can be realized by metal vias or metal mesh enfused through a dielectric and surrounding a raised ground plane to isolate electrical fields at each frequency. A conductive wall also provides quadrature hybrid isolation.

Antenna System and Antenna Module with Reduced Interference Between Radiating Patterns

An antenna system is disclosed. The antenna system comprises a first antenna adapted to a first frequency band and a second antenna adapted to a second frequency band different than the first frequency band. The first antenna has a radiator provided on a first side of a dielectric substrate and at least one resonator provided on a second opposite side of the dielectric substrate. The at least one resonator is partially covered by the radiator and resonates at a frequency in the second frequency band.

RADIO-FREQUENCY LOCALIZATION TECHNIQUES AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

A system comprising synchronization circuitry, a first interrogator, and a second interrogator. The first interrogator includes a transmit antenna; a first receive antenna, and circuitry configured to generate, using radio-frequency (RF) signal synthesis information received from the synchronization circuitry, a first RF signal for transmission by the transmit antenna, and generate, using the first RF signal and a second RF signal received from a target device by the first receive antenna, a first mixed RF signal indicative of a distance between the first interrogator and the target device. The second interrogator includes a second receive antenna, and circuitry configured to generate, using the RF signal synthesis information, a third RF signal; and generate, using the third RF signal and a fourth RF signal received from the target device by the second receive antenna, a second mixed RF signal indicative of a distance between the second interrogator and the target device. 1. A device , comprising:a substrate;a semiconductor die mounted on the substrate;a receive antenna fabricated on the substrate and configured to receive, from an interrogator device, radio-frequency (RF) signals circularly polarized in a first rotational direction;a transmit antenna fabricated on the substrate and configured to transmit, to the interrogator device, RF signals circularly polarized in a second rotational direction different from the first rotational direction; and generate, from RF signals provided from the receive antenna, the RF signals to be transmitted to the interrogator device, and', 'provide the generated RF signals to the transmit antenna for transmission., 'circuitry integrated with the semiconductor die and configured to2. The device of claim 1 , wherein the transmit antenna comprises a patch antenna or a planar spiral antenna.3. The device of claim 1 , wherein the transit antenna comprises a first linearly polarized antenna and a second linearly polarized antenna ...

METAMATERIAL STRUCTURE ANTENNA AND METAMATERIAL STRUCTURE ARRAY

In various embodiments, a metamaterial structure antenna may comprise: a feed line for feeding a signal; a ground plane comprising a cross-shaped aperture forming circular polarization on the basis of a magnetic field induced by the fed signal; and a patch plane formed parallel to the ground plane which emits electromagnetic waves on the basis of the circular polarization. 1. A meta-structure antenna comprising:a feed line configured to feed a signal;a ground plane including a cross-shaped aperture, the ground plane being configured to form circularly polarized waves based on a magnetic field induced by the signal; anda patch plane formed parallel to the ground plane, the patch plane being configured to radiate electromagnetic waves based on the circularly polarized waves.2. The meta-structure antenna of claim 1 , further comprising:a plurality of vias formed between the ground plane and the patch plane to produce zeroth-order resonance in the meta-structure antenna.3. The meta-structure antenna of claim 2 , wherein claim 2 , when the patch plane is divided into a plurality of partial patch planes claim 2 , numbers of one or more vias formed between respective partial patch planes and the ground plane are equal to each other.4. The meta-structure antenna of claim 1 , further comprising:a superstrate configured to radiate electromagnetic waves improved in directional gain by adjusting a phase and an amplitude of the radiated electromagnetic waves.5. The meta-structure antenna of claim 4 , wherein the superstrate includes a first cover and a second cover spaced apart from the first cover by a predetermined distance.6. The meta-structure antenna of claim 5 , wherein the first cover and the second cover include a first pattern and a second pattern claim 5 , respectively in order to adjust the phase and the amplitude of the radiated electromagnetic waves.7. The meta-structure antenna of claim 6 , wherein the first pattern and the second pattern have a circular shape.8. ...

Mechanically reconfigurable patch antenna

A polarization configurable patch antenna including a radiating layer, wherein the radiating layer has a corner truncated rectangular patch shape; and a feed capacitively coupled to the radiating layer for exciting the radiating layer, wherein the radiating layer is rotatable with respect to the feed, and the antenna is configured to generate a right-hand circularly polarized radiation field when the radiating layer is in a first rotational position and a left-hand circularly polarized radiation field when the radiating layer is in a second rotational position.

RADIO-FREQUENCY LOCALIZATION TECHNIQUES AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

A system comprising synchronization circuitry, a first interrogator, and a second interrogator. The first interrogator includes a transmit antenna; a first receive antenna, and circuitry configured to generate, using radio-frequency (RF) signal synthesis information received from the synchronization circuitry, a first RF signal for transmission by the transmit antenna, and generate, using the first RF signal and a second RF signal received from a target device by the first receive antenna, a first mixed RF signal indicative of a distance between the first interrogator and the target device. The second interrogator includes a second receive antenna, and circuitry configured to generate, using the RF signal synthesis information, a third RF signal; and generate, using the third RF signal and a fourth RF signal received from the target device by the second receive antenna, a second mixed RF signal indicative of a distance between the second interrogator and the target device. 1. A system , comprising: transmit, to a target device, a first radio-frequency (RF) signal having a first center frequency;', 'receive, from the target device, a second RF signal having a second center frequency different from the first frequency, wherein the second center frequency is a harmonic of the first center frequency;, 'at least a first antenna configured tofirst circuitry configured to obtain, based on the first RF signal and the second RF signal, a first mixed RF signal indicative of a first distance between at least the first antenna and the target device;a second receive antenna configured to receive, from the target device, a third RF signal having the second center frequency;second circuitry configured to obtain, based on the first RF signal and the third RF signal, a second mixed RF signal indicative of a second distance between the second antenna and the target device;a third receive antenna configured to receive, from the target device, a fourth RF signal having the second ...

TRANSMITTER

A controller of a transmitter outputs cyclically different digital data to equivalent transmission circuits, that is, RF circuits to generate a rotation polarized wave. 1. A transmitter comprising:a first transmission circuit and a second transmission circuit having at least one common circuit; anda controller which generates first digital data and outputs the first digital data to the first transmission circuit, and generates second digital data different from the first digital data and outputs the second digital data to the second transmission circuit, wherein outputs of the first transmission circuit and the second transmission circuit are transmitted from a pair of antennas spatially orthogonal to each other to generate a radio wave having a polarized wave rotating orthogonally to a propagation direction.2. The transmitter according to claim 1 , wherein the first transmission circuit and the second transmission circuit include the same modulators and the same frequency up-converters each as the common circuit.3. The transmitter according to claim 1 , wherein the controller generates digital data as the second digital data claim 1 , having a part cyclically different from the first digital data.4. The transmitter according to claim 3 , wherein the controller generates the digital data as the second digital data claim 3 , having a part different from the first digital data and a part that is the same as the first digital data claim 3 , the parts being equivalent with respect to time in the cycle.5. The transmitter according to claim 3 , the controller generates the first digital data and the second digital data claim 3 , having sequential bit strings as the digital data in which mutually coincident bits and inverted bits are alternately arranged repeatedly for every other bit.6. The transmitter according to claim 1 , wherein the controller outputs the first digital data and the second digital data simultaneously to the first transmission circuit and the second ...

COMPACT WIDEBAND HIGH GAIN CIRCULARLY POLARIZED ANTENNA

A compact wideband single feed circularly polarized antenna is provided. The circularly polarized antenna may include a ground plane. The circularly polarized antenna may include a radiating patch with an embedded ring-shaped slot. The circularly polarized antenna may include a via that shorts a round section of the radiating patch surrounded by the ring-shaped slot to the ground plane. The circularly polarized antenna may include a coaxial feed. The inner conductive material of the coaxial feed may be connected to the radiating patch and the outer conductive material of the coaxial feed may touch the ground plane. The circularly polarized antenna may include a slit-slotted parasitic square patch. 1. A circularly polarized antenna , comprising:a ground plane;a radiating patch with an embedded ring-shaped slot;a via that shorts a round section of the radiating patch surrounded by the ring-shaped slot to the ground plane;a coaxial feed, wherein an inner conductive material of the coaxial feed is connected to the radiating patch and an outer conductive material of the coaxial feed touches the ground plane; anda slit-slotted parasitic square patch.2. The circularly polarized antenna of claim 1 , further comprising:a first substrate; anda second substrate substantially parallel to the first substrate.3. The circularly polarized antenna of claim 2 , wherein the first substrate and the second substrate have the same relative permittivity and dielectric loss.4. The circularly polarized antenna of claim 2 , wherein the radiating patch is positioned on a first surface of the first substrate claim 2 , wherein the ground plane is positioned on a second surface of the first substrate claim 2 , wherein the slit-slotted parasitic square patch is positioned on a first surface of the second substrate.5. The circularly polarized antenna of claim 1 , wherein the ring-shaped slot is positioned at a corner of the radiating patch.6. The circularly polarized antenna of claim 1 , wherein ...

Antenna Structure

An antenna structure includes a ground element, a first radiation element, a second radiation element, a first feeding element, and a second feeding element. The first radiation element is positioned between the second radiation element and the ground element. The first feeding element includes a first coupling excitation element. The second feeding element includes a second coupling excitation element. The first coupling excitation element and the second coupling excitation element are both adjacent to the first radiation element. A first line segment is formed by connecting a central point of the first coupling excitation element to a central axis of the antenna structure. A second line segment is formed by connecting a central point of the second coupling excitation element to the central axis of the antenna structure. An angle between the first line segment and the second line segment is greater than 90 degrees. 1. An antenna structure , comprising:a ground element;a first radiation element, having a first opening and a second opening;a second radiation element, separated from the first radiation element, wherein the first radiation element is positioned between the second radiation element and the ground element;a first feeding element, comprising a first coupling excitation element and a first connection element, wherein a first signal source is coupled through the first connection element to the first coupling excitation element, wherein the first connection element passes through the first opening, and wherein the first coupling excitation element is adjacent to the first radiation element and is positioned between the second radiation element and the first radiation element; anda second feeding element, comprising a second coupling excitation element and a second connection element, wherein a second signal source is coupled through the second connection element to the second coupling excitation element, wherein the second connection element passes through ...

ANTENNA AND ANTENNA APPARATUS

An antenna as an embodiment of the present invention is provided with an exciting element and a plurality of non-exciting elements. In a plan view, the exciting element includes a central region having a feeding point and at least three extending regions that extend radially from the central region. In the plan view, each non-exciting element includes a short circuit region having a short circuit point and a power receiving region located at a position where it is allowed to be capacitively coupled with corresponding one of the extending regions. In the plan view, a current path from the short circuit region to the power receiving region in each non-exciting element has a vertical component with respect to the extending direction of the corresponding one of the extending regions. 1. An antenna comprising:an exciting element including, in a plan view, a central region having a feeding point and at least three extending regions that extend radially from the central region; anda plurality of non-exciting elements each including, in the plan view, a short circuit region having a short circuit point and a power receiving region located at a position where it is allowed to be capacitively coupled with corresponding one of the extending regions, whereinin the plan view, a current path from the short circuit region to the power receiving region in each of the non-exciting elements has a vertical component with respect to the extending direction of the corresponding one of the extending regions.2. The antenna according to claim 1 , whereinthe plurality of non-exciting elements have a non-linear shape in the plan view.3. The antenna according to claim 1 , whereinthe exciting element and each of the non-exciting elements are arranged rotationally symmetrically with respect to the feeding point in the plan view.4. The antenna according to claim 1 , further comprising:a conductor grounding plate; andan insulator laminated on the conductor grounding plate, whereinthe exciting ...

CIRCULARLY POLARIZED ANTENNAS

An antenna includes a dielectric substrate, a circular patch overlying the dielectric substrate, and a metamaterial ground plane. One or more antenna feeds are coupled to the circular patch. The antenna feeds may include impedance transformers. The metamaterial ground plane includes a plurality of conductive patches and a ground plane. The conductive patches are arranged along a first plane below the circular patch and are separated from the circular patch by at least the dielectric substrate. The conductive patches are arranged in a pattern that provides circular symmetry with respect to a center of the circularly polarized antenna. The ground plane is arranged along a second plane and is electrically coupled to at least a first portion of the conductive patches. One or more of the conductive patches and the ground plane are coupled to ground. 114-. (canceled)15. A circularly polarized antenna , comprising:a dielectric substrate;a circular patch overlying the dielectric substrate;a first conductive ring surrounding the circular patch and overlying the dielectric substrate, the first conductive ring coupled to ground and isolated from the circular patch;one or more antenna feeds coupled to the circular patch; a plurality of conductive patches arranged along a first plane below the circular patch and separated from the circular patch by at least the dielectric substrate, the plurality of conductive patches arranged in a pattern that provides circular symmetry with respect to a center of the circularly polarized antenna; and', 'a ground plane arranged along a second plane, the ground plane electrically coupled to at least a first portion of the plurality of conductive patches, wherein the first portion of the plurality of conductive patches and the ground plane are coupled to ground., 'a metamaterial ground plane comprising16. The circularly polarized antenna of wherein each of the one or more antenna feeds includes an impedance transformer claim 15 , and the ...

ANTENNA APPARATUS

The antenna apparatus has a base station installed in a first space partitioned by a wall, a radio terminal provided in a second space, and a repeater including passive antennas and installed on the wall. The repeater is constituted of a first antenna that transmits and receives signals to and from a base station, a plurality of second antennas that transmit and receive the signals to and from the radio terminal, and a transmission line that connects the first antenna with the second antenna. Further, the plurality of second antennas are installed such that planes of polarization of the second antennas are different from each other to improve transmission with the radio terminal. 1. An antenna apparatus comprising:a wall partitioning a first space and a second space; a base station installed in the first space; a large number of radio terminals installed in the second space; and a repeater attached to the wall and repeating a communication radio wave between the base station and the radio terminal,wherein the repeater includes a first antenna provided on a side of the first space, a second antenna provided on a side of the second space, and a transmission line connecting the first antenna and the second antenna, andwherein the antenna apparatus uses the second antenna having characteristics of being able to receive a circular polarization wave or a plurality of planes of polarization.2. The antenna apparatus according to claim 1 ,wherein the first antenna and the second antenna are constituted of passive antennas.3. The antenna apparatus according to claim 1 ,wherein the second antenna is provided in a plurality of sets, and the plurality of the second antennas are installed such that planes of polarization of the plurality of second antennas are different from each other.4. The antenna apparatus according to claim 1 ,wherein the first antenna and the second antenna are passive antennas, the second antenna is provided in a plurality of sets, and the plurality of ...

SOIL HUMIDITY MICROWAVE REMOTE SENSING DEVICE WITH MULTI-MODE COMPATIBILITY VIA GNSS-R AND A METHOD OF USING THE SAME

The disclosure relates to the technical field of soil humidity measurement, in particular to a soil humidity microwave remote sensing device with multi-mode compatibility via GNSS-R and a method of using the same. The device includes a direct RHCP antenna, reflective RHCP antenna, a reflective LHCP antenna, a combiner, switches, preamplifiers, down-conversion modules, sampling and quantizing modules, a capturing and closed-loop tracking module, an open-loop tracking module, a position calculating and controlling module and a soil humidity inverting module. The soil humidity microwave remote sensing device with multi-mode compatibility via GNSS-R realizes flexibly switching among different GNSS-R soil humidity microwave remote sensing working modes, so that the soil remote sensing device can fully utilize advantages of the different working modes to realize compatible multi-mode observation. The method realizes multi-mode, non-contact and large-area soil humidity measurement by utilizing the GNSS reflected signals.

SHORTED ANNULAR PATCH ANTENNA WITH SHUNTED STUBS

A microstrip antenna for circularly polarized radiation including a substrate, a ground layer disposed on a first side of the substrate, a first radiating layer disposed on a second side of the substrate opposite the first side, one or more first electrically conductive pathways extending from the ground layer to the first radiating layer, wherein the one or more first electrically conductive pathways form a ring about an axis, one or more second electrically conductive pathways extending from the ground layer to the first radiating layer, wherein the one or more second electrically conductive pathways are disposed along a portion of a first line extending outwardly from the ring, and a feed conductor for connecting the antenna to a feed line. 1. A microstrip antenna for circularly polarized radiation comprising:a substrate;a ground layer disposed on a first side of the substrate;a first radiating layer disposed on a second side of the substrate opposite the first side;one or more first electrically conductive pathways extending from the ground layer to the first radiating layer, wherein the one or more first electrically conductive pathways form a ring about an axis;one or more second electrically conductive pathways extending from the ground layer to the first radiating layer, wherein the one or more second electrically conductive pathways are disposed along a portion of a first line extending outwardly from the ring; anda feed conductor for connecting the antenna to a feed line.2. The microstrip antenna of claim 1 , wherein the microstrip antenna is configured to generate a circularly polarized radiation field in response to receiving an electrical signal through the feed conductor.3. The microstrip antenna of claim 1 , wherein the first line intersects the axis of the ring.4. The microstrip antenna of claim 1 , wherein a second line intersecting the feed pin and the axis forms an acute angle with the first line.5. The microstrip antenna of claim 4 , wherein the ...

Reconfigurable aperture-coupled patch antenna

An electronically configurable antenna is disclosed. In one embodiment, the antenna comprises a circuit board having a composite dielectric that has a top surface and a bottom surface. An inner antenna element and a coupling element are disposed on the top surface, with the coupling element disposed about a periphery of and substantially coplanar with the antenna element. The coupling element is selectably electrically shorted to the inner antenna element to configure the antenna. The electronically configurable antenna further has a conductor extending through the composite dielectric between the top surface and the bottom surface and a lower electrical ground plane on the bottom surface to minimize any change in the antenna's electrical behavior due to the conductivity of the surfaces to which they are mounted.

CIRCULARLY POLARIZED ARRAY ANTENNA AND CIRCULARLY POLARIZED ARRAY ANTENNA MODULE

A circularly polarized array antenna may include: a dielectric material substrate; and at least one unit antenna including a plurality of radiators arranged sequentially in a rotational direction on the dielectric material substrate such that feeders of the plurality of radiators have a phase difference. The plurality of radiators may be arranged in a diagonal direction with respect to a first direction and a second direction crossing each other. Radiators neighboring each other in the first direction or the second direction, among the plurality of radiators, may be spaced apart by a gap of at least a width of the radiators neighboring each other in the first direction or the second direction. 1. A circularly polarized array antenna , comprising:a dielectric material substrate; andat least one unit antenna including a plurality of radiators arranged sequentially in a rotational direction on the dielectric material substrate such that feeders of the plurality of radiators have a phase difference,wherein the plurality of radiators are arranged in a diagonal direction with respect to a first direction and a second direction crossing each other, andwherein radiators neighboring each other in the first direction or the second direction, among the plurality of radiators, are spaced apart by a gap of at least a width of the radiators neighboring each other in the first direction or the second direction.2. The circularly polarized array antenna of claim 1 , wherein the plurality of radiators include a first radiator claim 1 , a second radiator claim 1 , a third radiator claim 1 , and a fourth radiator arranged in a clockwise direction claim 1 , and configured to be fed such that phase differences of the first radiator claim 1 , the second radiator claim 1 , the third radiator claim 1 , and the fourth radiator are 0° claim 1 , 90° claim 1 , 180° claim 1 , and 270° claim 1 , respectively.3. The circularly polarized array antenna of claim 1 , wherein the plurality of radiators ...

ULTRA-WIDEBAND MINIATURIZED CROSSED CIRCULARLY-POLARIZED ANTENNA

The present disclosure discloses an ultra-wideband miniaturized crossed circularly-polarized antenna, comprising a plurality of radiation sheets, a substrate, a reflecting plate and a phase shifting 90-degree equal power divider, all of which are disposed in order. The front side of the substrate faces the radiation sheets and is provided with an excitation slot. The back side of the substrate faces the reflecting plate and is provided with a first power divider and two first transmission lines, as well as a second power divider and two second transmission lines. Input ends of the first power divider and the second power divider are connected to two input ends of the phase shifting 90-degree equal power divider, respectively. The two first transmission lines and the two second transmission lines orthogonally intersect with the excitation slot and are connected to a metal surface of the front side of the substrate, respectively. The ultra-wideband miniaturized crossed circularly-polarized antenna is provided with multiple layers of radiation sheets different in size and corresponding to different frequency bands to achieve the effect of expanding the frequency band. In addition, conversion between crossed circular polarization and linear polarization is realized by means of the phase shifting 90-degree equal power divider. 1. An ultra-wideband miniaturized crossed circularly-polarized antenna , comprising a plurality of radiation sheets , a substrate , a reflecting plate and a phase shifting 90-degree equal power divider , all of which are disposed in order;wherein a front side of the substrate faces the radiation sheets and is provided with an excitation slot; a back side of the substrate faces the reflecting plate and is provided with a first power divider and two first transmission lines, as well as a second power divider and two second transmission lines; the first transmission line and the second transmission line are transmission lines of two crossed linearly- ...

Patch Antenna Array System

A patch antenna array system is provided. The patch antenna array system can include a plurality of patch antennas oriented with respect to each other to provide a nearly symmetric radiation pattern over a range of frequencies, such as from 1500 Megahertz (MHz) to 1700 MHz. The patch antenna array system can include a sequential phase feed network that is in communication with the plurality of patch antennas. The sequential phase feed network can be configured to provide a radio frequency (RF) signal to each patch antenna of the plurality of patch antennas such that the patch antenna array system has an axial ratio of less than 1 decibel (dB) over the range of frequencies.

DUAL RESONATOR FOR FLAT PANEL ANTENNAS

Dual resonator for flat panel antennas is disclosed. In one example, an antenna comprises a single physical antenna aperture having at least two spatially interleaved antenna sub-arrays of antenna elements operable as two resonator sets with a frequency offset with respect to each other. The antenna sub-arrays are operated together to form a beam in the desired frequency band. Each sub-array has a modulation pattern calculated based on holographic beam steering algorithms. The frequency offset between the sub-arrays can be achieved, e.g., by geometrical differences of the radiative antenna elements or differences in electromagnetic loading of the radiative antenna elements. By using two or dual resonator sets with frequency offset, significant improvement to dynamic bandwidth can be achieved in contrast to a single resonator antenna by expanding the dynamic bandwidth range with dual resonators. 1. An antenna comprising:a single physical antenna aperture having at least two spatially interleaved antenna sub-arrays of antenna elements operable as two resonator sets with a frequency offset with respect to each other, wherein the antenna sub-arrays are operated together to form a beam in a desired frequency band.2. The antenna of claim 1 , wherein the antenna elements of each sub-array include radiative elements and the frequency offset is achieved by geometrical differences or differences in electromagnetic loading of the radiative elements of each sub-array.3. The antenna of claim 1 , wherein each sub-array has a modulation pattern calculated based on holographic beam steering algorithms.4. The antenna of claim 2 , wherein each sub-array is controlled via a different modulation pattern.5. The antenna of claim 1 , wherein the at least two antenna arrays comprise combined interleaved dual receive antenna arrays operable to perform reception in at least one receive band.6. The antenna of claim 1 , wherein each of the at least two antenna sub-arrays is to operate based on ...

Broadband circularly polarized antenna using metasurface

Provided is a broadband circularly polarized antenna using a metasurface. The antenna includes a lower substrate, an upper substrate stacked on the lower substrate, a radiator, which is located between the lower substrate and the upper substrate, has a rectangular patch shape in which two triangular removed parts are formed by removing opposite corners in a triangular shape, extends so as to have a predetermined width and length from one end of a hypotenuse of one triangular removed part of the triangular removed parts, and includes an extended strip having a feed hole formed therein, and the metasurface formed on an upper surface of the upper substrate and including a plurality of unit cells. The antenna has improved performance, such as a low profile, a broadband circular polarization characteristic, a high gain characteristic, and the like.

RADAR SENSOR FOR MOTOR VEHICLES

A radar sensor for motor vehicles, including a transmitting antenna and a receiving antenna designed separately from the transmitting antenna, wherein the transmitting antenna is configured to emit radiation circularly polarized in a first direction, and the receiving antenna is configured to receive radiation which is circularly polarized in a second direction opposite the first direction. 13-. (canceled)4. A radar sensor for a motor vehicle , comprising:a transmitting antenna and a receiving antenna designed separately from the transmitting antenna;wherein the transmitting antenna is configured to emit radiation circularly polarized in a first direction, and the receiving antenna is configured to receive radiation circularly polarized in a second direction opposite the first direction.5. The radar sensor as recited in claim 4 , wherein the transmitting antenna and receiving antenna are patch antennas.6. The radar sensor as recited in claim 5 , wherein the configuration of the transmitting and receiving antennas for circularly polarized radiation is achieved by chamfers on corners of an otherwise rectangular antenna patch. The present invention relates to a radar sensor for motor vehicles, including a transmitting antenna and a receiving antenna designed separately from the transmitting antenna.Motor vehicles are increasingly equipped with driver assistance systems which support the driver in driving the motor vehicle. Examples of such driver assistance systems are adaptive cruise control (ACC) systems, which automatically regulate the distance from a preceding vehicle, and collision warning systems or collision avoidance systems, which output a warning to the driver in the event of a collision risk or actively intervene in the vehicle guidance to avert the collision. Usually radar sensors, which typically operate at a radar frequency of 77 GHz, are used in these driver assistance systems to detect the traffic surroundings. For transmitting and receiving the radar ...

Antenna System and Antenna Module With a Parasitic Element For Radiation Pattern Improvements

An antenna system and antenna module incorporating the antenna system. The antenna system has a first planar antenna element and at least one second antenna element which are arranged along an axis. Also included within the near-field of the first planar antenna element is a planar parasitic element arranged substantially in parallel to the first planar antenna element and being arranged at a predetermined distance therefrom. The center of the planar parasitic element is offset, with respect to the center of the first planar antenna element, in a direction away from the at least one second antenna element along the axis. The deformation of the radiating pattern of the first planar antenna element, due to interference with the at least one second antenna element, is reduced. 1. An antenna system , comprising:a first planar antenna element arranged along an axis;at least one second antenna element arranged along the axis; anda planar parasitic element:(a) within the near-field of the first planar antenna element substantially in parallel to the first planar antenna element at a predetermined distance therefrom, and(b) with the center of the planar parasitic element offset with respect to the center of the first planar antenna element in a direction away from the at least one second antenna element along the axis,so as to reduce a deformation of the radiating pattern of the first planar antenna element due to an interference with the at least one second antenna element.2. The antenna system according to claim 1 , wherein each of the at least one second antenna element is within the near-field of the first planar antenna element.3. The antenna system according to claim 2 , wherein the first planar antenna element receives/transmits electromagnetic radio waves having a circular polarization.4. The antenna system according to claim 3 , wherein the first planar antenna element is a corner-truncated rectangular patch antenna element.5. The antenna system according to claim ...

RESONANT ANTENNA FOR GENERATING CIRCULARLY-POLARIZED SIGNAL WITH MULTIPLE MODES

A three-dimensional resonant chamber is described. The three-dimensional resonant chamber may support a plurality of circularly polarized modes at a desired frequency. The desired frequency may be in an ISM (Industrial, Scientific, Medical) frequency band, such as in the 902 MHz-928 MHz or in the 2.4 GHz-2.5 GHz. The three-dimensional resonant chamber may comprise one or more openings for coupling electromagnetic radiation outside the three-dimensional resonant chamber. The three-dimensional resonant chamber may be disposed in a cavity, such as a microwave oven, and may be configured to excite the cavity through the one or more openings. The three-dimensional resonant chamber may be connected to a waveguide support a circularly polarized mode. 1. An apparatus comprising: a three-dimensional resonant chamber to generate, from an input microwave signal having a circularly polarized mode, an output microwave signal having a plurality of circularly polarized modes; and', 'at least one aperture, formed on the three-dimensional resonant chamber, to couple the output microwave signal having the plurality of circularly polarized modes to an outside of the three-dimensional resonant chamber., 'a microwave antenna comprising2. The apparatus of claim 1 , wherein the at least one aperture is formed on a sidewall of the three-dimensional resonant chamber.3. The apparatus of claim 1 , wherein the three-dimensional resonant chamber is claim 1 , apart from the at least one aperture claim 1 , electrically closed.4. The apparatus of claim 3 , wherein the three-dimensional resonant chamber comprises a solid outer surface.5. The apparatus of claim 1 , wherein the three-dimensional resonant chamber is configured to support two circularly polarized modes for at least some frequencies in an ISM band.6. The apparatus of claim 5 , wherein the ISM band comprises frequencies between 902 MHz and 928 MHz.7. The apparatus of claim 1 , wherein the at least one aperture is slanted by an angle that ...

SINGLE-LAYERED END-FIRE CIRCULARLY POLARIZED SUBSTRATE INTEGRATED WAVEGUIDE HORN ANTENNA

An end fire circularly polarized (CP) substrate integrated waveguide (SIW) horn antenna and a method of manufacturing thereof are described. The antenna includes an input section for receiving radio frequency (RF) waves from a source; and a body extending from the input section for receiving the RF waves from the input section, the body comprising a plurality of radiating units, the plurality of radiating units being configured to radiate circularly polarized waves (CP) in a far field, wherein apertures of the plurality of radiating unit being located along an edge of a planar dielectric substrate, and wherein the horn antenna is in a planar form. 1. An end fire circularly polarized (CP) substrate integrated waveguide (SIW) horn antenna , comprising:an input section for receiving radio frequency (RF) waves from a source; anda body extending from the input section for receiving the RF waves from the input section, the body comprising a plurality of radiating units, the plurality of radiating units being configured to radiate circularly polarized waves (CP) in a far field,wherein apertures of the plurality of radiating unit being located along an edge of a planar dielectric substrate, and wherein the horn antenna is in a planar form.2. The antenna of claim 1 , wherein the plurality of radiating units radiating corresponding RF waves from respective radiating unit apertures claim 1 , the plurality of radiating units comprising a first radiating unit for radiating first linearly polarized waves claim 1 , and a second radiating unit for radiating second linearly polarized waves claim 1 , wherein at respective radiating unit apertures of the first and second radiating units claim 1 , the first linearly polarized waves and the second linearly polarized waves have a substantially same amplitude claim 1 , a phase difference of substantially 90° claim 1 , and a difference in polarization direction of substantially +/−90°.3. The antenna of claim 2 , wherein the first linearly ...

ANTENNA

In an embodiment, an antenna () comprises a planar patch radiator having a first excitation point () and a second excitation point (); a ground plane (); and a feed line () configured to couple an input signal to the first excitation point and the second excitation point such that the relative phase between the input signal at the first excitation point and the input signal at the second excitation point is switchable between a first relative phase and a second relative phase and the antenna radiates in a first mode in response to the first relative phase and the antenna radiates in a second mode in response to the second relative phase. 1. An antenna comprisinga planar patch radiator having a first excitation point and a second excitation point;a ground plane; anda feed line configured to couple an input signal to the first excitation point and the second excitation point such that the relative phase between the input signal at the first excitation point and the input signal at the second excitation point is switchable between a first relative phase and a second relative phase and the antenna is operable to radiate in a first mode in response to the relative phase between the input signal at the first excitation point and the input signal at the second excitation point being the first relative phase and the antenna is operable to radiate in a second mode in response to the relative phase between the input signal at the first excitation point and the input signal at the second excitation point being the second relative phase.2. An antenna according to claim 1 , wherein the feed line comprisesa first branch coupled to the first excitation point;a second branch coupled to the second excitation point; anda switchable element configured to switch the feed line between a first configuration and a second configuration, wherein in the first configuration there is a first path difference between the first branch and the second branch and in the second configuration there is ...

CHIP-SCALE RADIO-FREQUENCY LOCALIZATION DEVICES AND ASSOCIATED SYSTEMS AND METHODS

A device comprising: a substrate; a semiconductor die mounted on the substrate; a transmit antenna fabricated on the substrate and configured to transmit radio-frequency (RF) signals at least at a first center frequency; a receive antenna fabricated on the substrate and configured to receive RF signals at least at a second center frequency different than the first center frequency; and circuitry integrated with the semiconductor die and configured to provide RF signals to the transmit antenna and to receive RF signals from the receive antenna. 1. (canceled)2. A system , comprising:a plurality of interrogator devices including first and second interrogator devices, each of the first and second interrogator devices comprising a radio-frequency (RF) transmit antenna configured to transmit RF signals to a target device, and transmit circuitry configured to generate RF signals for transmission to the target device by the RF transmit antenna; control the first interrogator device to transmit, to the target device, a first RF signal, and', 'after the first interrogator device has completed transmitting the first RF signal, control the second interrogator device to transmit, to the target device, a second RF signal; and, 'a controller configured to receive a third RF signal transmitted by the target device in response to transmitting the first RF signal using the first interrogator device, and', 'receive a fourth RF signal transmitted by the target device in response to transmitting the second RF signal using the second interrogator device., 'receive circuitry configured to3. The system of claim 2 , wherein the first RF signal has a first center frequency claim 2 , and the third RF signal has a second center frequency different from the first center frequency.4. The system of claim 3 , wherein the second RF signal has the first center frequency claim 3 , and the fourth RF signal has the second center frequency.5. The system of claim 3 , wherein the second center frequency ...

ANTENNA ARRAY WITH ASYMMETRIC ANTENNA ELEMENTS

An RFID reader is provided that includes an antenna array comprising multiple antenna elements circumferentially distributed around a longitudinal axis of the antenna array. Each antenna element includes multiple patch elements disposed above one or more underlying substrates, wherein the patch elements of each antenna element are disposed on an outer side of the antenna element. Further, one or more of the antenna elements is an asymmetric antenna element, wherein a first end of the asymmetric antenna element is wider than a second, opposite end of the asymmetric antenna element, wherein a first patch element disposed proximate to the first end of the asymmetric antenna element is larger than a second patch element disposed proximate to the second end of the asymmetric antenna element, and wherein a resonant frequency associated with the first patch element is approximately the same as a resonant frequency associated with the second patch element. 118-. (canceled)19. An asymmetric antenna element of comprising:a substrate;a plurality of patch elements disposed above the substrate; andwherein a first end of the antenna element is wider than a second, opposite end of the antenna element, wherein a first patch element disposed proximate to the first end of the asymmetric antenna element is larger than a second patch element disposed proximate to the second end of the asymmetric antenna element, and wherein a resonant frequency associated with the first patch element of the asymmetric antenna element is approximately the same as a resonant frequency associated with the second patch element of the asymmetric antenna element.2022-. (canceled)23. The antenna element of claim 19 , wherein each of the first and second patch elements is configured so that it may be one of horizontally polarized claim 19 , vertically polarized claim 19 , or circularly polarized. The present invention relates to wireless communication systems and, more particularly, to a circular antenna array ...

COMPACT INTEGRATED GNSS ANTENNA SYSTEM WITH VERTICAL SEMITRANSPARENT SCREEN FOR REDUCING MULTIPATH RECEPTION

An antenna system includes a right-hand circularly polarized antenna for receiving Global Navigation Satellite System (GNSS) signals and located on a receiver housing; a vertical semitransparent screen for providing an Down/Up ratio 2. The antenna system of claim 1 , wherein the semitransparent screen includes an upper slot and a lower slot to which sets of lumped elements are connected claim 1 ,wherein nominal values of the lumped elements connected to the upper slot provide the Down/Up ratio of −13 dB or better in the nadir direction in the HF band; andwherein nominal values of the lumped elements connected to the lower slot provide the Down/Up ratio of −13 dB or better in the nadir direction in the LF band.3. The antenna system of claim 1 , wherein the semitransparent screen includes an upper slot and a lower slot to which sets of lumped elements are connected claim 1 ,wherein nominal values of the lumped elements connected to the upper slot provide the Down/Up ratio of −13 dB or better in the nadir direction in the LF band; andwherein nominal values of the lumped elements connected to the lower slot provide the Down/Up ratio of −13 dB or better in the nadir direction in the HF band.4. The antenna system of claim 1 , wherein the vertical semitransparent screen includes one rib shaped as a cylinder with a center on a Z axis of the antenna.5. The antenna system of claim 4 , wherein the vertical semitransparent screen further includes vertical slots to which the sets of lumped elements are connected.6. The antenna system of claim 1 , wherein the semitransparent screen includes an upper slot and a lower slot claim 1 , and wherein the set of lumped elements includes an upper set and a lower set claim 1 , and wherein the upper set is connected across the upper slot claim 1 , and the lower set is connected across the lower slot.7. The antenna system of claim 1 , wherein the vertical semitransparent screen is generally square in plan view.8. The antenna system of claim 1 ...

Antenna for a radar detector

An antenna for a radar detector according to the present invention comprises: a power supply unit; first and second branches branched from the power supply unit; a first band patch antenna connected to the first branch and having first band properties; a second band patch antenna connected to the second branch and having second band properties; a second band stub placed between the power supply unit and the first band patch antenna on the first branch; and a first band stub placed between the power supply unit and the second band patch antenna on the second branch. The antenna for the radar detector according to the present invention may match one power supply unit without damaging the properties of a plurality of antennas that have different frequency properties.

WIDEBAND CIRCULARLY POLARIZED ANTENNA

A wideband circularly polarized antenna, comprising a ground plane, a radiating element and a plurality of metallic plates; the radiating element is defined above the ground plane, the metallic plates are sequentially and vertically defined around the ground plane, and displacements from the metallic plates to the center of the ground plane are the same. The wideband circularly polarized antenna provided by the present invention has a broad bandwidth and a compact configuration. 1. A wideband circularly polarized antenna , comprising a ground plane , a radiating element and metallic plates; wherein the radiating element is defined above the ground plane , the metallic plates are sequentially and vertically defined around the ground plane , and displacements from the metallic plates to the center of the ground plane are the same.2. The wideband circularly polarized antenna according to claim 1 , wherein the radiating element is a corner-truncated patch claim 1 , the corner-truncated patch is defined above the ground plane.3. The wideband circularly polarized antenna according to claim 2 , wherein the ground plane has a square shape claim 2 , the corner-truncated patch is in a square shape with a pair of diagonal corners of the square cut off claim 2 , the amount of the metallic plates is four claim 2 , the metallic plates are sequentially and vertically arranged around the ground plane claim 2 , and four metallic plates are not connected to each other.4. The wideband circularly polarized antenna according to claim 1 , wherein the radiating element comprises two pairs of patch dipoles which are perpendicular to each other; the wideband circularly polarized antenna further comprises a substrate defined above the ground plane claim 1 , the two pairs of patch dipoles are etched on the substrate.5. The wideband circularly polarized antenna according to claim 4 , wherein each pair of patch dipoles respectively comprises two rectangular patch arms which are identical to ...

Adjustable-tilt housing with flattened dome shape, array antenna, and bracket mount

Radio devices for wireless transmission including an integrated adjustable mount allowing mounting to a pole or stand and adjustment of the angle of the device (e.g., the altitude). The device may include a compact array antenna having a high gain configured to operate in, for example, the 5.15 to 5.85 GHz band and/or the 2.40-2.48 GHz band. The antenna emitters may be arranged in a separate plane from a plane containing the antenna feed connecting the emitting elements and also from a ground plane. The antenna array may be contained within a protective weatherproof housing along with the radio control circuitry.

Omni-Directional Antenna System and Device for MIMO Applications

Omni-directional orthogonally-polarized antenna system for MIMO applications are disclosed herein. An example antenna system can have two arrays of horizontally polarized radiating elements, and two arrays of vertically polarized radiating elements, each array having roughly 180-degree radiation pattern, disposed about a central axis in a common horizontal plane, arrays of common polarization separated by 180-degrees, such that MIMO processing of signals to the arrays of common polarization results in a radiation pattern that is substantially constant over 360-degrees in azimuth. 1. An antenna system comprising two arrays of horizontally polarized radiating elements , and two arrays of vertically polarized radiating elements , each array having roughly 180-degree radiation pattern , disposed about a central axis in a common horizontal plane , arrays of common polarization separated by 180 degrees , thereby providing uniform coverage in both vertical and horizontal polarization over 360 degrees using beamforming and polarization diversity.2. The antenna system according to claim 1 , wherein the horizontally polarized radiating elements comprise slot elements and the vertically polarized radiating elements comprise dipole elements.3. The antenna system according to claim 2 , further comprising a first metal extrusion and a second metal extrusion that wherein a first of the two arrays of horizontally polarized radiating elements is disposed within an enclosure of the first metal extrusion and a second of the two arrays of horizontally polarized radiating elements is disposed within an enclosure of the second metal extrusion.4. The antenna system according to claim 3 , wherein the slot elements of the first of the two arrays of horizontally polarized radiating elements and the slot elements of the second of the two arrays of horizontally polarized radiating elements are aligned with slot openings in the first metal extrusion and the second metal extrusion claim 3 , ...

PATCH ANTENNA WITH WIRE RADIATION ELEMENTS FOR HIGH-PRECISION GNSS APPLICATIONS

A right-hand circularly-polarized patch antenna comprising a ground plane and a patch connected to each other with one or more wires for which the wire shape and location of the end points are selected such that they do not cause an antenna mismatch, and the electrical current carried in the wires produces an extra electromagnetic field subtracted from the patch field in the nadir direction. 1. A single-band circularly-polarized antenna comprising:a ground plane;a radiating patch disposed above the ground plane;a dielectric disposed between the ground plane and the patch;a plurality of wires symmetrically oriented about an antenna axis of symmetry orthogonal to the ground plane and passing through a center of the single-band circularly-polarized antenna, each wire having a first endpoint connected to the ground plane and a second endpoint connected to the radiating patch, the first endpoint and the second point being connected by a horizontal wire segment connected between a first vertical wire segment and a second vertical wire segment, the horizontal wire segment being parallel with the ground plane and the radiating patch and positioned above the radiating patch, and the first vertical wire segment and the second vertical wire segment being orthogonal to the ground plane and the radiating patch; andwherein the symmetric orientation of the plurality of wires provides for the generation of an electrical current through each horizontal wire segment of each wire of the plurality of wires such that a total antenna field in a nadir direction of the single-band circularly-polarized antenna is reduced.2. The single-band circularly-polarized antenna of wherein the circularly-polarized antenna is a right-hand circularly polarized antenna.3. The single-band circularly-polarized antenna of wherein the plurality of wires comprises four wires and the respective at least one horizontal wire segment of each wire is straight.4. The single-band circularly-polarized antenna of ...

COMPACT POLARIZED ANTENNA AND METHODS

A right-hand circular polarized antenna and associated methods. In one embodiment, a quarter-wave antenna configuration is used within a small form factor portable device (e.g. wristwatch). The antenna comprises a radiator element which operates in as a linear polarized antenna while the device is operating in free space. However, when the device is attached to a user (e.g. at a user's wrist), the antenna utilizes the loading of the user's body tissue in order to suppress unwanted signals (e.g. left hand polarized signals) to permit operation in circular polarized mode (e.g. right hand polarized mode), thereby allowing for increased sensitivity to received circularly polarized signals such as those emanated from global positioning satellites. 123-. (canceled)24. An antenna component for use in a portable communications device , the device comprising a ground , a feed port , and a ground plane , said component comprising:a dielectric substrate;a radiator element disposed proximate to a surface of said substrate; anda feed conductor configured to couple to the radiator at a feed point;wherein said antenna component is configured to operate in a first mode when placed under a first operating condition, and to operate in a second mode when placed under a second operating condition.25. The antenna component of claim 24 , wherein said first mode comprises operating as a linear polarized antenna claim 24 , and said second mode comprises operating as a right hand circular polarized (RHCP) antenna.26. The antenna component of claim 25 , wherein the first operating condition comprises said device operating in free-space and said second operating condition comprises said device operating under a loading condition.27. The antenna component of claim 26 , wherein said loading condition comprises said device being in electrical contact with at least a part of a user's body.28. The antenna component of claim 24 , wherein the antenna component comprises a quarter-wave antenna.29. ...

ADJUSTABLE-TILT HOUSING WITH FLATTENED DOME SHAPE, ARRAY ANTENNA, AND BRACKET MOUNT

Radio devices for wireless transmission including an integrated adjustable mount allowing mounting to a pole or stand and adjustment of the angle of the device (e.g., the altitude). The device may include a compact array antenna having a high gain configured to operate in, for example, the 5.15 to 5.85 GHz band and/or the 2.40-2.48 GHz band. The antenna emitters may be arranged in a separate plane from a plane containing the antenna feed connecting the emitting elements and also from a ground plane. The antenna array may be contained within a protective weatherproof housing along with the radio control circuitry. 1. A wireless broadband access device , the device comprising:an antenna;a housing coupled to the antenna, the housing comprising a bracket mount, wherein the bracket mount comprises a ball socket;a deformable locking projection within the ball socket;circuitry within the housing and connected to the antenna and configured to send and receive wireless broadband signals using the antenna;a bracket comprising a ball joint, wherein the ball joint is configured to be held within the ball socket of the bracket mount, further wherein the ball joint has a textured surface; anda clamp configured to be secured to the bracket mount and to hold the ball joint within the ball socket with a retaining force, wherein the clamp may be hand tightened to the bracket mount to provide sufficient retaining force to irreversibly deform the deformable locking projection against the textured surface of the ball joint so that the deformed locking projection interlocks with the textured surface.2. The device of claim 1 , wherein the clamp and the bracket mount engage to form a ratchet lock that allows the clamp to be tightened to the bracket mount but prevents the clamp from loosening off of the bracket mount unless a release catch is engaged.3. The device of claim 1 , further comprising gear teeth on the bracket mount that engage a releasable pawl on the clamp to prevent loosening ...

Parallel-Plate Antenna

A parallel-plate antenna or antenna array suitable for operation at millimeter wave frequencies. The antenna includes an antenna element having a ground plane with a slot and a pair of parallel plates connected to the ground plane. The parallel plates extend generally perpendicularly from the ground plane. In plan view, the slot is arranged between the parallel plates. The antenna also includes a feed operably coupled with the slot for feeding the slot during operation so as to generate a circularly polarized signal for radiation. 1. An antenna , comprising: a ground plane with a slot; and', 'a pair of parallel plates connected to the ground plane, the parallel plates extending generally perpendicularly from the ground plane, and, in plan view, the slot being arranged between the parallel plates; and, 'an antenna element having'}a feed operably coupled with the slot for feeding the slot during operation so as to generate a circularly polarized signal for radiation.2. The antenna of claim 1 , wherein the antenna has a working frequency claim 1 , and wherein the feed is arranged to feed the slot so as to create a phase difference between orthogonal modes of operation at the working frequency for generation of the circularly polarized signal.3. The antenna of claim 2 , wherein the slot is elongated along a slot extension axis.4. The antenna of claim 3 , wherein the slot is generally rectangular claim 3 , obround claim 3 , or oblong.5. The antenna of claim 3 , wherein each of the parallel plates has a length extending parallel to a plate extension axis claim 3 , wherein the slot extension axis is at an angle with the plate extension axis.6. The antenna of claim 5 , wherein the angle is between 30 degrees to 60 degrees.7. The antenna of claim 5 , wherein the angle is between 40 degrees to 50 degrees.8. The antenna of claim 5 , wherein the angle is about 45 degrees.9. The antenna of claim 1 , wherein the slot is arranged centrally of the ground plane.10. The antenna of ...

RADIO-FREQUENCY LOCALIZATION TECHNIQUES AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

A system comprising synchronization circuitry, a first interrogator, and a second interrogator. The first interrogator includes a transmit antenna; a first receive antenna, and circuitry configured to generate, using radio-frequency (RF) signal synthesis information received from the synchronization circuitry, a first RF signal for transmission by the transmit antenna, and generate, using the first RF signal and a second RF signal received from a target device by the first receive antenna, a first mixed RF signal indicative of a distance between the first interrogator and the target device. The second interrogator includes a second receive antenna, and circuitry configured to generate, using the RF signal synthesis information, a third RF signal; and generate, using the third RF signal and a fourth RF signal received from the target device by the second receive antenna, a second mixed RF signal indicative of a distance between the second interrogator and the target device. 1. A system , comprising: transmit, to a target device, a first radio-frequency (RF) signal having a first center frequency;', 'receive, from the target device, a second RF signal having a second center frequency different from the first frequency;, 'a first dual-mode antenna configured tofirst circuitry configured to obtain, based on the first RF signal and the second RF signal, a first mixed RF signal indicative of a first distance between the dual mode antenna and the target device;a second receive antenna configured to receive, from the target device, a third RF signal having the second center frequency;second circuitry configured to obtain, based on the first RF signal and the third RF signal, a second mixed RF signal indicative of a second distance between the second antenna and the target device;a third receive antenna configured to receive, from the target device, a fourth RF signal having the second center frequency;third circuitry configured to obtain, based on the first RF signal and ...

APERTURE-COUPLED MICROSTRIP-LINE FEED FOR CIRCULARLY POLARIZED PATCH ANTENNA

An aperture coupled, single fed, microstrip line feed for a circularly polarized patch antenna is provided that can transmit transmissions with a low profile, wide impedance, and axial ratio bandwidths. The circularly polarized patch antenna includes a double sided printed circuit board with a non-linear slots etched into a ground plane of one side of the printed circuit board, with a printed microstrip line printed on the opposite side of the printed circuit board. The microstrip line can be hook shaped and intersect each of the slots. The non linear slots can be radially arranged around a locus or area on the circuit board. A metal patch can placed above the ground plane and electromagnetic waves emanating from the microstrip line can couple to the patch through the non-linear strips and excite the patch such that it radiates an electromagnetic transmission 1. A circularly polarized patch antenna , comprising:a metal patch;a ground plane with non-linear slots etched into the ground plane, wherein the non-linear slots are radially positioned around a locus of the ground plane and a top side of the ground plane is opposite the metal patch; anda microstrip line printed onto a circuit board around the locus and on a bottom side of the ground plane, wherein the microstrip line is underneath the non-linear slots.2. The circularly polarized patch antenna of claim 1 , further comprising:a substrate layer between the metal patch and the ground plane.3. The circularly polarized patch antenna of claim 1 , further comprising an air layer between the ground plane and the metal patch.4. The circularly polarized patch antenna of claim 1 , wherein the microstrip line is hook shaped.5. The circularly polarized patch antenna of claim 1 , wherein an end of the microstrip line opposite a feed is open circuited.6. The circularly polarized patch antenna of claim 1 , wherein an end of the microstrip line claim 1 , opposite a feed claim 1 , is short circuited to the ground plane.7. The ...

CIRCULARLY POLARIZED ANTENNA AND ATTITUDE CALCULATING DEVICE

The purpose is to provide a compact circularly polarized antenna while obtaining desired antenna characteristics. The circularly polarized antenna may include an antenna substrate formed with a flat film conductor configured to transmit and receive a circularly polarized wave, and a cavity formed in a surface of the antenna substrate opposite from a radiation surface. The cavity may at least partially overlap with the flat film conductor when seen in a depth direction of the cavity. The length of the cavity in at least one direction may be shorter than half of a wavelength of the circularly polarized wave. 1. A circularly polarized antenna , comprising:an antenna substrate formed with a flat film conductor, the flat film conductor being configured to transmit and receive a circularly polarized wave; and to be formed at an opposite side from a radiation surface of the antenna substrate,', 'to at least partially overlap with the flat film conductor in a depth direction of the cavity, and', 'to have a size at least in one direction shorter than half of a wavelength of the circularly polarized wave., 'a cavity configured2. The circularly polarized antenna of claim 1 , wherein claim 1 ,the flat film conductor includes a loop conductor, andthe cavity includes a first cavity, the first cavity being configured to fully overlap with the loop conductor in a depth direction of the cavity.3. The circularly polarized antenna of claim 2 , wherein the size of the first cavity in the one direction is the size of the first cavity in a direction orthogonal to the depth direction of the first cavity.4. The circularly polarized antenna of claim 1 , wherein claim 1 ,the flat film conductor includes a slot conductor formed with a slot, andthe cavity includes a second cavity, the second cavity being configured to at least partially overlap with the slot conductor in the depth direction of the cavity.512-. (canceled)13. The circularly polarized antenna of claim 2 , wherein claim 2 ,the ...

Triaxial Antenna Reception and Transmission

An apparatus comprises: a triaxial antenna including orthogonal x, y, and z linearly polarized elements to convert RF energy to x, y, and z RF signals; converters to convert the x, y, and z RF signals to x, y, and z complex signals, respectively; a polarization generator to rotate x, y, and z axes of the x, y, and z complex signals angularly responsive to angle signals, apply x, y, and z complex weights to the x, y, and z complex signals to produce x, y, and z controlled complex signals, respectively, and sum the x, y, and z controlled complex signals into a combined signal, such that the x, y, and z complex weights apply a polarization to the RF energy as manifested in the combined signal, and the angle signals rotate a plane of the polarization relative to the x, y, and z axes, without moving the triaxial antenna. 1. A method comprising:at orthogonal x, y, and z linearly polarized elements of a triaxial antenna, converting received radio frequency (RF) energy to x, y, and z RF signals, respectively;converting the x, y, and z RF signals to x, y, and z complex signals referenced to x, y, and z axes, respectively; androtating the x, y, and z axes associated with the x, y, and z complex signals angularly responsive to angle signals, and applying x, y, and z complex weights to the x, y, and z complex signals, to produce x, y, and z controlled complex signals referenced to the x, y, and z axes as rotated, respectively, and summing the x, y, and z controlled complex signals into a combined signal, such that the x, y, and z complex weights apply a polarization to the RF energy as manifested in the combined signal, and the angle signals rotate a plane of the polarization relative to the x, y, and z axes, without moving the triaxial antenna.2. The method of claim 1 , wherein the polarization is among different polarizations that are possible based on the x claim 1 , y claim 1 , and z complex weights.3. The method of claim 2 , wherein the different polarizations include ...

Triaxial Antenna Reception and Transmission

An apparatus comprises: a polarization generator to receive first and second signals, apply to the first and second signals two-dimensional (2D) complex weights to produce 2D weighted complex signals that represent a polarization having a plane of polarization referenced to three-dimensional (3D) orthogonal axes, operate on the 2D weighted complex signals to rotate the plane of polarization angularly with respect to the 3D orthogonal axes, and produce 3D controlled complex signals representing the polarization with the rotated plane of polarization; quadrature upconverter-modulators to modulate the 3D controlled complex signals, to produce 3D modulated radio frequency (RF) signals; and a triaxial antenna including orthogonal 3D linearly polarized elements to receive respective ones of the 3D modulated RF signals and collectively convert the 3D modulated RF signals to radiant RF energy that has the polarization with the rotated plane of polarization. 1. An apparatus comprising:a polarization generator to receive first and second signals, apply to the first and second signals two-dimensional (2D) complex weights to produce 2D weighted complex signals that represent a polarization having a plane of polarization referenced to three-dimensional (3D) orthogonal axes, operate on the 2D weighted complex signals to rotate the plane of polarization angularly with respect to the 3D orthogonal axes, and produce 3D controlled complex signals representing the polarization with the rotated plane of polarization;quadrature upconverter-modulators to modulate the 3D controlled complex signals, to produce 3D modulated radio frequency (RF) signals; anda triaxial antenna including orthogonal 3D linearly polarized elements to receive respective ones of the 3D modulated RF signals and collectively convert the 3D modulated RF signals to radiant RF energy that has the polarization with the rotated plane of polarization.2. The apparatus of claim 1 , further comprising a controller to control ...

POLARIZATION TECHNIQUES FOR SUPPRESSION OF HARMONIC COUPLING AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

A system comprising: an interrogator device, comprising: a first transmit antenna configured to transmit radio-frequency (RF) signals circularly polarized in a first rotational direction; and a first receive antenna configured to receive RF signals circularly polarized in a second rotational direction different from the first rotational direction; and a target device, comprising: a second receive antenna configured to receive RF signals circularly polarized in the first rotational direction and a second transmit antenna configured to transmit, to the interrogator device, RF signals circularly polarized in the second rotational direction. 1. A system , comprising: a first transmit antenna configured to transmit radio-frequency (RF) signals circularly polarized in a first rotational direction; and', 'a first receive antenna configured to receive RF signals circularly polarized in a second rotational direction different from the first rotational direction; and, 'an interrogator device, comprising a second receive antenna configured to receive RF signals circularly polarized in the first rotational direction and', 'a second transmit antenna configured to transmit, to the interrogator device, RF signals circularly polarized in the second rotational direction., 'a target device, comprising2. The system of claim 1 , wherein claim 1 , in response to receiving a first RF signal using the second receive antenna claim 1 , the first RF signal being circularly polarized in the first rotational direction claim 1 , the target device is configured to transmit a second RF signal circularly polarized in the second rotational direction using the second transmit antenna.3. The system of claim 2 , wherein the target device is configured to generate the second RF signal using the first RF signal.4. The system of claim 1 , wherein the interrogator device comprises a substrate and the first transmit antenna comprises a circularly polarized printed antenna that is printed on the substrate.5 ...

ANTENNA DEVICE

An antenna device includes a first plate conductor that is disposed approximately in parallel to the GND conductor plate, of which one end is connected to the GND conductor plate, and the other end that is opposed to the one end is opened, and a second plate conductor that has approximately the same shape as that of the first plate conductor, of which one end is grounded to the GND conductor plate, of which the other end that is opposed to the one end is opened, that is disposed at a position obtained by rotating the first plate conductor approximately 180 degrees about an intersection line passing through an approximately central point of the GND conductor plate as an axis on the same plane as the first plate conductor on the GND conductor plate, and that has a ground portion at which the grounding is performed and an open portion at which the opening is performed at positions obtained by rotating the ground portion and the open portion of the first plate conductor approximately 180 degrees about the axis. 1. An antenna device comprising:a flat plate GND conductor plate;a first plate conductor that is disposed approximately in parallel to the GND conductor plate, and of which one end is grounded to the GND conductor plate, and the other end that is opposed to the one end is opened; anda second plate conductor that has approximately the same shape as that of the first plate conductor, of which one end is grounded to the GND conductor plate, of which the other end that is opposed to the one end is opened, that is disposed at a position obtained by rotating the first plate conductor approximately 180 degrees about an intersection line passing through an approximately central point of the GND conductor plate as an axis on the same plane as the first plate conductor on the GND conductor plate, and that has a ground portion at which the grounding is performed and an open portion at which the opening is performed at positions obtained by rotating the ground portion and ...

PRINTED WIRING BOARD WITH RADIATOR AND FEED CIRCUIT

In one aspect, a unit cell of a phased array antenna includes a printed wiring board (PWB). The PWB includes a first layer comprising a radiator, a second layer comprising a feed circuit configured to provide excitation signals to the radiator, a plurality of vias connecting the feed circuit to the radiator, a signal layer, an active component layer comprising an active component bonded to the signal layer and a radio frequency (RF) connector connecting the signal layer to the feed circuit. 1. A unit cell of a phased array antenna comprising: a first layer comprising a radiator;', 'a second layer comprising a feed circuit configured to provide excitation signals to the radiator;', 'a plurality of vias connecting the feed circuit to the radiator;', 'a signal layer;', 'an active component layer comprising an active component bonded to the signal layer; and', 'a radio frequency (RF) connector connecting the signal layer to the feed circuit., 'a printed wiring board (PWB) comprising2. The unit cell of claim 1 , wherein the radiator comprises:a first dipole arm;a second dipole arm;a third dipole arm; anda fourth dipole arm.3. The unit cell of claim 2 , wherein the plurality of vias comprises:a first via coupled to the first dipole arm;a second via coupled to the second dipole arm;a third via coupled to the third dipole arm anda fourth via coupled to the fourth dipole arm,wherein the first, second, third and fourth vias provide the excitation signal from the feed circuit.4. The unit cell of claim 3 , wherein the feed circuit comprises:a first rat-race coupler coupled to the first via and the third via;a second rat-race couple coupled to the second via and the fourth via;a branchline coupler coupled to the first and second rat race couplers.5. The unit cell of claim 4 , wherein signals to the first and third dipole arms are 180° out of phase from one another. andwherein signals to the second and fourth dipole arms are 180° out of phase from one another.6. The unit cell of ...

Radio-frequency localization techniques and associated systems, devices, and methods

A system comprising synchronization circuitry, a first interrogator, and a second interrogator. The first interrogator includes a transmit antenna; a first receive antenna, and circuitry configured to generate, using radio-frequency (RF) signal synthesis information received from the synchronization circuitry, a first RF signal for transmission by the transmit antenna, and generate, using the first RF signal and a second RF signal received from a target device by the first receive antenna, a first mixed RF signal indicative of a distance between the first interrogator and the target device. The second interrogator includes a second receive antenna, and circuitry configured to generate, using the RF signal synthesis information, a third RF signal; and generate, using the third RF signal and a fourth RF signal received from the target device by the second receive antenna, a second mixed RF signal indicative of a distance between the second interrogator and the target device.

DIFFERENTIAL SIGNALING OF ANTENNAS ON A SUBSTRATE

A device comprising: a substrate; a transmit antenna fabricated on the substrate and configured to transmit radio-frequency (RF) signals; a receive antenna fabricated on the substrate and configured to receive RF signals; and circuitry, disposed on the substrate and differentially coupled to the transmit and receive antennas, and configured to provide to the transmit antenna RF signals to be transmitted by the transmit antenna and to process RF signals received by the receive antenna, wherein the substrate comprises material for reducing harmonic coupling between the transmit antenna and the receive antenna. 1. A device , comprising:a substrate;a transmit antenna fabricated on the substrate and configured to transmit radio-frequency (RF) signals;a receive antenna fabricated on the substrate and configured to receive RF signals; andcircuitry, disposed on the substrate and differentially coupled to the transmit and receive antennas, and configured to provide to the transmit antenna RF signals to be transmitted by the transmit antenna and to process RF signals received by the receive antenna,wherein the substrate comprises material for reducing harmonic coupling between the transmit antenna and the receive antenna.2. The device of claim 1 , further comprising:a first line and a second line,wherein the circuitry is differentially coupled to the transmit antenna using the first line and the second line.3. The device of claim 2 , wherein the circuitry is configured to:generate a first signal;generate a second signal out of phase with the first signal;provide the first signal to the transmit antenna via the first line; andprovide the second signal to the transmit antenna concurrently via the second line and concurrently with providing the first signal to the transmit antenna.4. The device of claim 3 , wherein the circuitry is configured to generate the second signal by phase shifting the first signal by 180 degrees.5. The device of claim 3 , wherein the transmit antenna is ...

A CIRCULARLY POLARIZED ANTENNA FOR RADIO FREQUENCY ENERGY HARVESTING

A circularly polarized (CP) antenna for Radio Frequency energy harvesting comprising: a top substrate; a bottom substrate disposed on a ground plane; a middle substrate disposed between the top substrate and the bottom substrate; a slotted patch comprising more than one slots, the slotted patch being disposed on the top substrate; a slitted patch comprising a plurality of slits, the slitted patch being disposed between the top substrate and the middle substrate; a microstrip feed line disposed between the middle substrate and the bottom substrate; and a via connecting the slotted-circular-patch and the microstrip feed line to enable the slotted-circular-patch to be fed by the microstrip feed line, wherein the more than one slots and the slits are arranged so as to generate more than one orthogonal modes with equal magnitude for receiving RF signals. 1. A circularly polarized (CP) antenna for Radio Frequency energy harvesting comprising:a top substrate;a bottom substrate disposed on a ground plane;a middle substrate disposed between the top substrate and the bottom substrate;a slotted patch comprising more than one slots, the slotted patch being disposed on the top substrate;a slitted patch comprising a plurality of slits, the slitted patch being disposed between the top substrate and the middle substrate;a microstrip feed line disposed between the middle substrate and the bottom substrate; anda via connecting the slotted patch and the microstrip feed line to enable the slotted patch to be fed by the microstrip feed line,wherein the more than one slots and the slits are arranged so as to generate more than one orthogonal modes with equal magnitude for receiving Radio Frequency (RF) signals.2. The circularly polarized (CP) antenna as claimed in claim 1 , wherein the slitted patch comprises a via hole for the via to pass through the stilled patch.3. The circularly polarized (CP) antenna as claimed in claim 1 , wherein the top substrate and bottom substrate have same ...

DUAL-POLARIZED CORNER-TRUNCATED STACKED PATCH ANTENNA WITH ENHANCED SUPPRESSION OF CROSS-POLARIZATION AND SCAN PERFORMANCE FOR WIDE SCAN ANGLES

Embodiments for an antenna structure that can also be used in an antenna array are described. Each antenna element includes a ground plane that includes a conductive material. Each antenna element also includes an antenna patch disposed on the ground plane. The antenna patch includes a base portion formed from an insulating material, and a conductive element disposed on the base portion and having a rectangular shape with a first length and a first width. The ground plane is larger than the conductive element. Additionally, each corner of the conductive element includes a rectangular region void of conductive material. The rectangular regions in each corner include a second length that is less than one half of the first length of the rectangular shape, and a second width that is less than one half of the first width of the rectangular shape. 1. An apparatus comprising:a ground plane comprising a conductive material; and a base portion formed from an insulating material, and', 'a conductive element disposed on the base portion and having a rectangular shape with a first length and a first width,, 'an antenna patch disposed on the ground plane, and comprisingwherein the ground plane is larger than the conductive element,wherein each corner of the conductive element includes a rectangular region void of conductive material, andwherein the rectangular regions in each corner include a second length that is less than one half of the first length of the rectangular shape, and a second width that is less than one half of the first width of the rectangular shape.2. The apparatus of claim 1 , wherein:the first length of the rectangular shape is based on a first operating frequency for the apparatus; andthe first width of the rectangular shape is based on a second operating frequency for the apparatus.3. The apparatus of claim 2 , wherein the first frequency is a frequency for transmitting a signal and the second frequency is a frequency for receiving a signal.4. The apparatus ...

Circular Polarized Antennas

An apparatus comprising at least one antenna for transmission and/or reception of circularly polarized electromagnetic radiation. The antenna includes a radiating element and a single feed line. The single feed line is coupled between the radiating element and a circuit that drives the antenna. The radiating element has a non-symmetrical outer perimeter shape. The radiating element may include an aperture. The antenna may further include a ground element and a supplemental ground feed structure, the supplemental ground feed structure located between the radiating element and the ground element. 1. An apparatus comprising: 'the radiating element having a non-symmetrical outer perimeter shape;', 'at least one multi-layer antenna structure including a radiating element and a single feed line connected to the radiating element,'}wherein the antenna structure emits circularly polarized radiation.2. The apparatus of claim 1 , wherein the non-symmetrical outer perimeter shape of the radiating element includes a pair of opposing corners having a truncated shape claim 1 , a pair of opposing corners having a mitered edge claim 1 , or a pair opposing corners having a rounded shape.3. The apparatus of claim 1 , wherein the radiating element includes an aperture.4. The apparatus of claim 3 , wherein the aperture is located at a center of the radiating element or substantially at a center of the radiating element.5. The apparatus of claim 3 , wherein the aperture comprises a geometric shape claim 3 , a symmetric shape claim 3 , a non-symmetric shape claim 3 , a square shape claim 3 , a rectangular shape claim 3 , a circular shape claim 3 , or an elliptical shape.6. The apparatus of claim 1 , wherein the antenna structure further includes a ground element and a first substrate claim 1 , the first substrate located between the radiating element and the ground element.7. The apparatus of claim 6 , wherein each of the radiating element and the ground element comprises an electrically ...

Circular Polarized Antennas Including Static Element

An apparatus comprising at least one antenna for transmission and/or reception of circularly polarized electromagnetic radiation. The antenna includes a radiating element, a static element, and a single feed line. The single feed line is coupled between the radiating element and a circuit that drives the antenna. The radiating element has a non-symmetrical outer perimeter shape. The radiating element may include an aperture. The antenna may further include a ground element and a supplemental ground feed structure, the supplemental ground feed structure located between the radiating element and the ground element and the radiating element located between the supplemental ground feed structure and the static element. 1. An apparatus comprising: the radiating element having a non-symmetrical outer perimeter shape,', 'the radiating element located between the ground element and the static element,, 'at least one multi-layer antenna structure including a ground element, a radiating element, a static element, and a single feed line connected to the radiating element,'}wherein the antenna structure emits circularly polarized radiation.2. The apparatus of claim 1 , wherein the non-symmetrical outer perimeter shape of the radiating element includes a pair of opposing corners having a truncated shape claim 1 , a pair of opposing corners having a mitered edge claim 1 , or a pair opposing corners having a rounded shape.3. The apparatus of claim 1 , wherein the radiating element includes an aperture.4. The apparatus of claim 3 , wherein the aperture is located at a center of the radiating element or substantially at a center of the radiating element.5. The apparatus of claim 3 , wherein the aperture comprises a geometric shape claim 3 , a symmetric shape claim 3 , a non-symmetric shape claim 3 , a square shape claim 3 , a rectangular shape claim 3 , a circular shape claim 3 , or an elliptical shape.6. The apparatus of claim 1 , wherein the antenna structure further includes a ...

CIRCULARLY POLARIZED CONNECTED-SLOT ANTENNA

A connected-slot antenna includes a dielectric substrate, a circular patch overlying the dielectric substrate, and a first conductive ring surrounding the circular patch and overlying the dielectric substrate. The first conductive ring is isolated from the circular patch by a first connected slot. At least four feeds are coupled to the circular patch. Each of the at least four feeds are spaced from adjacent ones of the at least four feeds by approximately equal angular intervals. A metamaterial ground plane includes a plurality of conductive patches and a ground plane. The plurality of conductive patches are separated from the circular patch and the first conductive ring by at least the dielectric substrate. The ground plane is electrically coupled to at least a first portion of the plurality of conductive patches. One or more of the plurality of conductive patches and the ground plane are coupled to ground. 1. A circularly polarized connected-slot antenna configured to receive radiation at global navigation satellite system (GNSS) frequencies , comprising:a dielectric substrate;a circular patch overlying the dielectric substrate;a first conductive ring surrounding the circular patch and overlying the dielectric substrate, the first conductive ring separated from the circular patch by a first connected slot;at least four impedance transformers overlying the dielectric substrate, each of the at least four impedance transformers including a microstrip and a ground pad that are separated by a first dielectric, each microstrip coupled to a first feed from a coaxial cable at an input and coupled to the circular patch at an output, and each ground pad coupled to a ground from the coaxial cable and coupled to the first conductive ring, wherein the output associated with each microstrip is spaced from adjacent outputs associated with other microstrips by approximately equal angular intervals; and a plurality of conductive patches arranged along a first plane and separated ...

Stacked-disk antenna element with shaped wings

A radiating element for a radar array antenna comprising a ground plane, a first electrically conductive disk arranged at a first distance from and generally parallel to the ground plane, and a second electrically conductive disk arranged at a second distance from and generally parallel to the ground plane. An electrically conductive element extends along a central axis of the radiating element and conductively couples the ground plane, the first electrically conductive disk and the second electrically conductive disk. The radiating element further includes a first wing defining a first surface opposing the electrically conductive element that is arranged at a first distance from the central axis, and a second surface opposing the electrically conductive element that is arranged at a second distance, different from the first distance, from the central axis.

Submerged Maritime Tag Track and Locate Device and System

A device and system for receiving and transmitting signals underwater. The device comprises a first antenna electrically connected to a transceiver, a second antenna electrically connected to the transceiver, and a battery electrically connected to the transceiver. The first antenna, second antenna, receiver, and battery are supported within a housing member. The transceiver is configured to receive a first signal from the first antenna and transmit a second signal to the second antenna.

LOW PROFILE ANTENNA - CONFORMAL

An antenna assembly operating in the AM/FM, 3G and 4G cellular, WiFi, Bluetooth, satellite and 5G bands. The assembly provides a wide bandwidth, orientation dependent, directional antenna via volumetric radiating elements that conformal to exterior surface(s) of a vehicle such as a passenger car. The volumetric antenna elements may be further controlled by embedded components and/or surrounded by controllable ground plane elements. In one application, the antenna may be used to detect a direction of approach by person to, for example, operate only certain door locks. 1. An antenna for use in a vehicle comprising:a cavity having conductive walls;a plurality of radiating surfaces disposed in a reference plane located above the cavity, such that each radiating surface comprises a quadrilateral surface having four sides, with a group of four quadrilateral surfaces comprising an orientation independent radiator, and such that a plurality of orientation-independent radiators are disposed in further groups of four, thereby providing at least sixteen quadrilateral surfaces, with the radiating surfaces further disposed in a defined pattern such that at least one side of a selected quadrilateral surface of a selected orientation-independent radiator is aligned in parallel with a least one side of another quadrilateral surface of another orientation-independent radiator within the reference plane,a plurality of frequency dependent couplings, each frequency dependent coupling disposed between a respective one of the radiating surfaces of the selected orientation-independent radiator and the other orientation-independent radiator and/or a ground plane element, andwith a surface area of each quadrilateral surface depending upon a first operating frequency, and with a collective surface area of the four quadrilateral surfaces comprising each orientation-independent radiator depending upon a second operating frequency, wherein the second operating frequency is less than the first ...

Circularly Polarized Connected-Slot Antennas

An antenna includes a dielectric substrate, a circular patch overlying the dielectric substrate, and a metamaterial ground plane. One or more antenna feeds are coupled to the circular patch. The antenna feeds may include impedance transformers. The metamaterial ground plane includes a plurality of conductive patches and a ground plane. The conductive patches are arranged along a first plane below the circular patch and are separated from the circular patch by at least the dielectric substrate. The conductive patches are arranged in a pattern that provides circular symmetry with respect to a center of the circularly polarized antenna. The ground plane is arranged along a second plane and is electrically coupled to at least a first portion of the conductive patches. One or more of the conductive patches and the ground plane are coupled to ground.

HIGH-EFFICIENCY DUAL-BAND CIRCULARLY-POLARIZED ANTENNA FOR HARSH ENVIORNMENT FOR TELECOMMUNICATION

An antenna for dual-band or wide-band communication link. The antenna includes a patch array, arranged above a top ground plane, that includes one or more panels, each panel included one or more patch subarrays, and each patch subarray includes single patch elements made from metal. Each patch element includes: a flat rectangular radiation surface element into which a rectangular cutout is formed; an RF power feed point having a cylindrical shape that makes contact to the bottom side of the radiation surface element and feeds through a hole formed in the top ground plane for connection to the RF power; and a structural post having a cylindrical shape that contacts, at one end, the bottom side of the radiation surface element at a region of the radiation surface element where electric surface current is substantially smaller than any other region, and contacts the top ground plane at a second end. 1. An antenna comprising:a metal top ground plane; a flat radiation surface element having a rectangular shape into which a rectangular cutout is formed;', 'an RF power feed point comprising a first cylindrical structure that contacts at one end of the first cylindrical structure a bottom side of the flat radiation surface element, and feeds through a corresponding hole formed in the metal top ground plane for connection to the RF power at a second end of the first cylindrical structure; and', 'a structural post comprising a second cylindrical structure that contacts at one end of the second cylindrical structure the bottom side of the radiation surface element at a region of the radiation surface element where an electric surface current is substantially smaller compared to an electric surface current in other regions of the radiation surface element, and contacts the top ground plane at a second end of the second cylindrical structure., 'a patch array arranged above the top ground plane, the patch array comprising a plurality of single patch elements made from metal, ...

STACKED CIRCULARLY POLARIZED ANTENNA STRUCTURE

The invention relates to a stacked circularly polarized antenna structure (). The stacked circularly polarized antenna structure () comprises a first antenna (), a second antenna (), and an adhesive element (). The adhesive element () is adhered between the first antenna () and the second antenna () to stack and form a stacked circularly polarized antenna structure () having the first antenna () and the second antenna () made of ceramic material with the same dielectric constant, having two feeding elements to reach circular polarization and enhance antenna bandwidth, and stacking the two antennas () together to form two resonance frequencies. 110. A stacked circularly polarized antenna structure () comprising:{'b': 1', '11', '12', '13', '14', '11', '111', '112', '11', '12', '111', '13', '112', '14', '12', '14', '112', '13, 'a first antenna () including a first base body (), a first electrode layer (), a first grounding layer () and at least one first feeding element (), wherein the first base body () has a first front surface (), a first rear surface () and at least two through holes penetrated through the first base body (); the first electrode layer () is provided on the first front surface (), and the first grounding layer () is provided on the first rear surface (); and the first feeding element () goes through one of the through holes and electrically connects to the first electrode layer (), and the first feeding element () extends to outside of the first rear surface () with its end, and not to electrically connect the first grounding layer ();'}{'b': 2', '21', '22', '24', '21', '211', '212', '21', '22', '211', '24', '24', '22', '24', '112', '13, 'a second antenna () including a second base body (), a second electrode layer () and at least one second feeding element (), wherein the second base body () has a second front surface (), a second rear surface () and at least one perforation penetrated through the second base body (); the second electrode layer () ...

Antenna device for rf positioning system and installation method thereof

The present invention discloses a positioning system based on Received Signal Strength having an antenna device with a directional patch antenna with circular polarization, and an installation method thereof. By having a circular polarization, being directional and of a patch design, the directional patch antenna can mitigate signal strength discrepancies caused by devices located at different angles, and signal strength interference due to presence of multi-paths, and front-end antenna radiation pattern and input impedance caused by ambient environment of the antenna device and other material compositions. Beacons are preferably installed on the ceiling, which can improve the line-of-sight (LOS) opportunities between the positioning devices and tracked objects.

FULL DUPLEX USING OAM

A system for providing full-duplex communications includes a first transceiver for transmitting first signals having a first orthogonal function of a plurality of orthogonal functions applied thereto on a first channel and receiving second signals having a second orthogonal function of the plurality of orthogonal functions on a second channel at a same time. A second transceiver transmits the second signals having the second orthogonal function of the plurality of orthogonal functions on the second channel and receives the first signals having the first orthogonal function of the plurality of orthogonal functions on the first channel at the same time. The first channel having the first orthogonal function applied thereto and the second channel having the second orthogonal function applied thereto do not interfere with each other enabling full duplex transmissions between the first transceiver and the second transceiver. 1. A system for providing full-duplex communications , comprising: first signal processing circuitry for receiving first input data and modulating the first input data onto a first carrier signal for transmission and for demodulating a second carrier signal into first output data;', 'first orthogonal function processing circuitry for applying a first orthogonal function of a plurality of orthogonal functions to the first carrier signal and for removing a second orthogonal function of the plurality of orthogonal functions from the second carrier signal;', 'first full duplex processing circuitry for transmitting the first carrier signal having the first orthogonal function applied thereto on the first channel at the same time the second carrier signal including the second orthogonal function is being received on the second channel;', 'a first patch antenna array for transmitting the first carrier signal on the first channel;', 'a second patch antenna array for receiving the second carrier signal on the second channel;', 'wherein each of the first and ...

Multi-Band Transmit-Receive Using Circular Polarization

The disclosure provides for a system for communication with a client device. The system includes a first transmitter configured to transmit a first signal and a second transmitter configured to transmit a second signal. The first signal is configured for a first communication band, and the second signal is configured for a second communication band different from the first communication band. The system also includes a hybrid coupler configured to split the first or second signal to a first part and a second part. In addition, the system also includes a first antenna configured to transmit the first part, and a second antenna configured to transmit the second part. The second antenna is oriented perpendicularly relative to an orientation of the first antenna. 1. A system for communication with a client device , the system comprising:a first transmitter configured to transmit a first signal, the first signal being configured for a first communication band;a second transmitter configured to transmit a second signal the second signal being configured for a second communication band different from the first communication band;a hybrid coupler configured to split the first signal or the second signal to a first part and a second part;a first antenna configured to transmit the first part; anda second antenna configured to transmit the second part, the second antenna being oriented perpendicularly relative to an orientation of the first antenna.2. The system of claim 1 , wherein the system further comprises a first diplexer configured to prevent interference between the first signal and an incoming signal.3. The system of claim 1 , further comprising one or more processors configured to operate a switch for the hybrid coupler.4. The system of claim 3 , wherein the one or more processors is configured to operate the switch when an indication is received by the one or more processors regarding whether the client device is capable of receiving circularly polarized signals.5. ...

ADJUSTABLE-TILT HOUSING WITH FLATTENED DOME SHAPE, ARRAY ANTENNA, AND BRACKET MOUNT

Radio devices for wireless transmission including an integrated adjustable mount allowing mounting to a pole or stand and adjustment of the angle of the device (e.g., the altitude). The device may include a compact array antenna having a high gain configured to operate in, for example, the 5.15 to 5.85 GHz band and/or the 2.40-2.48 GHz band. The antenna emitters may be arranged in a separate plane from a plane containing the antenna feed connecting the emitting elements and also from a ground plane. The antenna array may be contained within a protective weatherproof housing along with the radio control circuitry. 1. A wireless broadband access device , the device comprising:an antenna having an antenna port radio frequency (RF) pin extending therefrom;a printed circuit board (PCB) comprising a first layer and a plurality of additional layers;an antenna contact electrically coupling the antenna port RF pin to the first layer of the PCB, wherein the antenna port RF pin passes through the additional layers of the PCB without making electrical contact therewith; anda clearing region on each layer of the additional layers of the PCB, wherein each clearing region surrounds the antenna port RF pin on all sides in each layer of the additional layers of the PCB by more than about 0.5 mm, wherein the clearing region is substantially free of conductive materials.2. The device of claim 1 , wherein each clearing region forms a square region that is substantially free of conductive materials.3. The device of claim 1 , wherein each clearing region surrounds the antenna port RF pin by more than about 1 mm.4. The device of claim 1 , wherein each clearing region surrounds the antenna port RF pin by more than about 1.9 mm.5. The device of claim 1 , wherein each clearing region forms a rectangle.6. The device of claim 1 , further comprising a pair of ground pins extending from the antenna and through the additional layers of the PCB claim 1 , wherein the pair of ground pins each make ...

RECONFIGURABLE ANTENNA WITH CLUSTER OF RADIATING PIXELATES

Similar to cell based electronics systems that employ a sea of small unit cells in large scale arrays, such as thin film display monitors or semiconductor memories, an antenna array employs micron to centimeter size antenna pixelate cells that are integrated to form the plate of an antenna. Each row and column of cells in the antenna array may be accessed by digital logic and the RF transmission/reception state of the switchable cell changed. Thus, the antenna plate can be reconfigured and its radiating plate reformed to a specific pattern as an element of a larger array of antennas in wafer scale form. 1. A system comprising:a matrix of antenna pixelate cells wherein each pixelate cell either transmits a radio frequency (RF) signal to air or terminates routing of the RF signal based on switching of the pixelate cell, andthe matrix forms a reconfigurable antenna pattern that provides a specific antenna pattern based on which specific pixelate cells are switched to transmit and which specific pixelate cells are switched to terminate.2. The system of claim 1 , further comprising:a feed network connected to the antenna pixelate cells so that beam forming is provided for a specific antenna pattern, and wherein:beam steering and beam shaping are effected based on which specific pixelate cells are switched to transmit and which specific pixelate cells are switched to terminate.3. The system of claim 1 , further comprising:a feed network connected to the antenna pixelate cells so that spatial power combining is provided for the specific antenna pattern.4. The system of claim 1 , wherein the reconfigurable antenna pattern is patch based.5. The system of claim 1 , wherein the reconfigurable antenna pattern is ring based.6. The system of claim 1 , wherein the reconfigurable antenna pattern is dipole based.7. The system of claim 1 , further comprising:an array of ring based reconfigurable antenna patterns acting as elements of a wafer scale antenna module with right hand ...

ANTENNA BOARDS AND COMMUNICATION DEVICES

Disclosed herein are antenna boards, antenna modules, and communication devices. For example, in some embodiments, an antenna board may include a plurality of antenna patches coupled to a dielectric material and a plurality of pedestals extending from a face of the dielectric material and at least partially embedded in the dielectric material. 1. An antenna board , comprising:a plurality of antenna patches coupled to a dielectric material; anda plurality of pedestals extending from a face of the dielectric material and at least partially embedded in the dielectric material.2. The antenna board of claim 1 , wherein individual pedestals include a first portion with a first width and a second portion with a second width claim 1 , and the second width is different from the first width.3. The antenna board of claim 2 , wherein individual pedestals further include a third portion with a third width claim 2 , and the first portion is between the second portion and the third portion.4. The antenna board of claim 3 , wherein the second width is less than the first width claim 3 , and the first width is less than or equal to the third width.5. The antenna board of claim 3 , wherein the third portion is embedded in the dielectric material.6. The antenna board of claim 2 , wherein the second width is less than the first width.7. The antenna board of claim 1 , further comprising:first and second portions of conductive material, wherein the plurality of antenna patches are between the first and second portions of conductive material.8. The antenna board of claim 7 , wherein the first and second portions of conductive material are coplanar with the plurality of antenna patches.9. The antenna board of claim 1 , further comprising:a ground plane substrate, wherein the ground plane substrate includes a ground plane for the antenna patches, and individual pedestals are electrically coupled to the ground plane substrate.10. The antenna board of claim 9 , further comprising:an air ...

RADIO-FREQUENCY LOCALIZATION TECHNIQUES AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

A system comprising synchronization circuitry, a first interrogator, and a second interrogator. The first interrogator includes a transmit antenna; a first receive antenna, and circuitry configured to generate, using radio-frequency (RF) signal synthesis information received from the synchronization circuitry, a first RF signal for transmission by the transmit antenna, and generate, using the first RF signal and a second RF signal received from a target device by the first receive antenna, a first mixed RF signal indicative of a distance between the first interrogator and the target device. The second interrogator includes a second receive antenna, and circuitry configured to generate, using the RF signal synthesis information, a third RF signal; and generate, using the third RF signal and a fourth RF signal received from the target device by the second receive antenna, a second mixed RF signal indicative of a distance between the second interrogator and the target device. 1. An interrogator device , comprising:a substrate;a semiconductor die mounted on the first substrate;a transmit antenna on the substrate and shaped to convert a first electric signal to a first radio-frequency (RF) signal for transmission to a target device, the first RF signal having a first center frequency;a receive antenna on the substrate and shaped to convert a second RF signal transmitted from the target device to a second electric signal, the second RF signal having a second center frequency different from the first center frequency; and provide the first electric signal to the transmit antenna and to receive the second electric signal from the receive antenna, and', 'generate a third electrical signal indicative of a distance between the interrogator device and the target device based on the first and second electric signals., 'circuitry integrated with the semiconductor die and configured to2. The device of claim 1 , wherein the second center frequency is a harmonic of the first center ...

MULTI-BAND SLOTTED PLANAR ANTENNA

Slotted planar inverted F antennas are provided that can be operated in multiple frequency bands and are usable with electrically small ground planes. The antennas may have multiple planar levels and the impedance of each level (corresponding to a particular frequency band) may be independently adjustable. The antennas may have a self-supporting structure that does not require a separate frame. The antennas may further have a right hand circular polarization hemisphere and a left hand circular polarization hemisphere. Multiple antennas may be situated orthogonally to one another without adversely affecting their performance, due to the hemispherical polarizations, and thereby provide polarization diversity. The number of antennas and associated components used in wireless communications devices may be reduced by using the antennas, as well as reducing the amount of space needed for the antennas. 1. An antenna assembly , comprising:a ground plane; and a first plane element generally parallel with the ground plane and configured for operation in a first frequency band, the first plane element comprising a first strip, a second strip, a joining strip extending between the first and second strips, and a generally linear slot formed between the first and second strips;', 'a first grounding element extending downwardly from the first strip and electrically coupled to the ground plane;', 'a second grounding element extending downwardly from the second strip and electrically coupled to the ground plane;', 'a feed element extending downwardly from the joining strip at a first end of the slot;', 'a second plane element generally parallel with the first plane element and the ground plane and configured for operation in a second frequency band; and', 'a connecting element extending downwardly from the second plane element to the first plane element., 'an antenna, comprising2. The antenna assembly of claim 1 , wherein:the first strip of the first plane element extends generally ...

A Multiband Circularly Polarised Antenna

The present invention provides a circularly polarised, CP, antenna device for multiband GNSS. It comprises a spiral antenna and a high impedance surface, HIS, comprising a conductive layer comprising a first region and a separate second region, and a ground plane. The first region of the conductive layer is provided with at least one resonant element of a first resonant frequency and the second region of the conductive layer is provided with at least one resonant element of a second resonant frequency. 1. A circularly polarised , CP , antenna device for multiband GNSS comprising:a spiral antenna; anda high impedance surface, HIS, comprising:a conductive layer split into a first region and a separate second region, anda ground plane,wherein the first region of the conductive layer is provided with at least one resonant element of a first resonant frequency and the second region of the conductive layer is provided with at least one resonant element of a second resonant frequency.2. The device of claim 1 , wherein the first region comprises a first half of the conductive layer and the second region comprises a second half of the conductive layer.3. The device of claim 1 , wherein the at least one resonant element of a first resonant frequency comprises a periodic array of conductive resonant elements of a first size and the at least one resonant element of a second resonant frequency comprises a periodic array of conductive resonant elements of a second size.4. The device of claim 3 , wherein the periodic arrays of resonant elements comprise periodic arrays of one of: rectangles claim 3 , hexagons claim 3 , slots claim 3 , spirals claim 3 , Jerusalem crosses or fractal shapes.5. The device of claim 1 , further comprising a plurality of vias connecting the conductive layer to the ground plane.6. The device of claim 1 , wherein the HIS further comprises a dielectric material coupled between the conductive layer and the ground plane.7. The device of claim 6 , wherein the ...

Conformal planar dipole antenna

Systems and methods for a conformal planar dipole antenna is described herein. In one example, the antenna can include a first dipole layer, a second dipole layer, a microstrip layer, and a ground plane. The first dipole layer can include a first antenna element. The second dipole layer can include a second antenna element. The microstrip layer can include a microstrip. The first antenna element, the second antenna element, and the microstrip can be electrically coupled to each other.

Patch antenna device

A vehicle-mounted patch antenna device includes a substrate, a ground conductor provided on the substrate, an antenna element section, a stub, and a notification circuit section. The antenna element section is provided on a surface that faces a surface on which the ground conductor of the substrate is provided, and includes a power feeding section and a degeneracy separation element section. The stub is provided on a surface on which the antenna element section of the substrate is provided, and is a microstrip line that uses the ground conductor. The notification circuit section is provided on the substrate, and is connected adjacent to an area in which current distribution is minimum in a peripheral area other than an area in which the power feeding section of the antenna element section is provided.

WIRELESS TERMINAL MEASUREMENT APPARATUS, CIRCULARLY POLARIZED ANTENNA DEVICE CONNECTABLE THERETO AND WIRELESS TERMINAL MEASUREMENT METHOD

A circularly polarized antenna device, which is connectable to a wireless terminal measurement apparatus for performing measurements on a device under test (DUT) provided with an antenna on one surface of the DUT, includes a circularly polarized antenna and a holder. The circularly polarized antenna includes a dielectric substrate and a circularly polarized type of antenna element formed on a first surface of the dielectric substrate. The first surface is opposite to the one surface of the DUT. The circularly polarized antenna is spatially coupled to the antenna of the DUT. The holder holds the circularly polarized antenna and the DUT such that the one surface of the DUT and the dielectric substrate are not parallel to each other. 1. A circularly polarized antenna device which is connectable to a wireless terminal measurement apparatus for performing measurements on a device under test (DUT) provided with an antenna on one surface of the DUT , the circularly polarized antenna device comprising:a circularly polarized antenna comprising a dielectric substrate and a circularly polarized type of antenna element formed on a first surface of the dielectric substrate, the first surface being opposite to the one surface of the DUT, the circularly polarized antenna being spatially coupled to the antenna of the DUT; anda holder for holding the circularly polarized antenna and the DUT such that the one surface of the DUT and the dielectric substrate are not parallel to each other.2. The circularly polarized antenna device according to claim 1 , a ground conductor which is piled up at a second surface side of the dielectric substrate, the second surface being an opposite surface of the first surface of the dielectric substrate,', 'a plurality of metal posts which are arranged at predetermined intervals so as to form a cavity, the metal posts surrounding the antenna element which is disposed in the cavity, wherein each of the metal posts has one and opposite ends, and penetrates ...

3D TRIPOLAR ANTENNA AND METHOD OF MANUFACTURE

In various embodiments, a three-dimensional (3D) printed tripolar antenna fabricated through additive manufacturing techniques to match the geometries of various commercial wireless node packages is provided. The antenna systems are designed to mitigate harsh channel conditions by implementing polarization diversity between three mutually orthogonal monopoles. 1. A 3D tripolar antenna system , the system comprising:a 3D dielectric substrate comprising a substantially flat bottom dielectric substrate and at least three sloped dielectric substrate walls extending from the flat bottom dielectric substrate; andthree mutually orthogonal λ/4 monopole antenna, each one of the three mutually orthogonal λ/4 monopole antenna printed on a different one of the sloped dielectric substrate walls.2. The system of claim 1 , further comprising a microstrip line printed on the substantially flat bottom dielectric substrate and connected to each of the three mutually orthogonal λ/4 monopole antenna.3. The system of claim 2 , further comprising a switch coupled to the microstrip line claim 2 , the switch for selecting one of the three mutually orthogonal λ/4 monopole antenna.4. The system of claim 2 , further comprising a radio frequency (RF) coaxial connector coupled to the microstrip line.5. The system of claim 3 , wherein the system further comprises a radio signal strength indicator (RSSI) coupled to the switch claim 3 , the RSSI and switch configured to implement polarization diversity between the three mutually orthogonal λ/4 monopole antenna.6. The system of claim 1 , wherein each of the sloped dielectric substrate walls forms a 45° angle with the substantially flat bottom dielectric substrate.7. The system of claim 1 , wherein the substantially flat bottom dielectric substrate is selected from a rectangular shape and a circular shape.8. A 3D tripolar antenna system claim 1 , comprising:four sloped dielectric substrate walls extending from the flat bottom dielectric substrate; ...

ANTENNA WITH MULTIPLE PROPAGATION MODES

An antenna for a body-centric wireless communication system comprises first and second radiating structures between which is located a ground plane and a feed structure. The feed structure comprises a feed line extending between the first radiating structure and the ground plane, and a slot formed in the ground plane. A pair of shorting posts connects the first radiating structure to the ground plane. The antenna is capable of simultaneously generating in-body radiation, on-body radiation and off-body radiation in the same frequency band. 1. An antenna comprising:a first radiating structure;a second radiating structure;a ground plane located between said first and second radiating structures; and a feed line extending between said first radiating structure and said ground plane; and', 'at least one slot formed in said ground plane., 'a feed structure located between said first and second radiating structures, wherein said feed structure comprises2. The antenna of claim 1 , wherein the first and second radiating structures are spaced apart in a first claim 1 , or top-to-bottom claim 1 , direction claim 1 , the ground plane and feed structure being located claim 1 , or sandwiched claim 1 , between the first and second radiating structures in said first claim 1 , or top-to-bottom claim 1 , direction.3. The antenna of claim 1 , wherein said first radiating structure comprises a patch of electrically conductive material claim 1 , and wherein claim 1 , preferably claim 1 , said second radiating structure comprises a patch of electrically conductive material.4. (canceled)5. The antenna of claim 1 , wherein said feed line has a free end that is located between said first and second radiating structures claim 1 , and a second end that may be coupled to an antenna port.6. (canceled)7. The antenna of claim 1 , wherein said at least one slot overlaps with the feed line in a top-to-bottom direction of the antenna claim 1 , and wherein claim 1 , preferably claim 1 , said feed ...

ANTENNA ASSEMBLY FOR PROVIDING INTERFERENCE MITIGATION

An antenna assembly may include a right hand circularly polarized (RHCP) antenna, a left hand circularly polarized (LHCP) antenna, an RF nuller operably coupling the RHCP antenna and LHCP antenna to a difference element, and a digital nuller operably coupled to the difference element.

Switchable transmit and receive phased array antenna with high power and compact size

A switchable transmit and receive phased array antenna (“STRPAA”) is disclosed. The STRPAA includes a housing, a plurality of radiating elements, and a plurality of transmit and receive (“T/R”) modules. The STRPAA may also include either a first multilayer printed wiring board (“MLPWB”) configured to produce a first elliptical polarization or a second MLPWB configured to produce a second elliptical polarization within the housing.

DEVICES AND SYSTEMS FOR PROVIDING WIRELESSLY CHARGEABLE BATTERIES WITH IMPROVED CHARGE CAPACITIES

An enclosure for a wirelessly chargeable battery includes a housing having a base and an opposing open end, where a hole is bored through the base. The enclosure includes an end piece attached to the housing proximal the base and having an opposing open end. The enclosure includes a first conductive coating formed on an interior surface of the housing and a first surface of the base, and a second conductive coating formed on an interior surface of the end piece and a second surface of the base, where the housing and the end piece are configured in dimensions that conform to standardized battery dimensions. Battery cell(s) may be positioned inside a cavity in the housing, and circuitry may be positioned inside a cavity of the end piece. The enclosure enables highly efficient use of interior space and volume of the enclosure to maximize battery charge capacity. 1. An enclosure for a wirelessly chargeable battery , comprising:a housing having a base and an open end opposite the base, the base having a first surface and a second surface, wherein the first surface of the base faces the open end of the housing, and wherein the base includes a hole bored therethrough;an end piece attached to the housing proximal to the base and having an open end positioned opposite the second surface of the base; andan antenna attached to or formed on at least one of: an interior surface, and an exterior surface, of at least one of: the housing, and the end piece.2. The enclosure of claim 1 , wherein the housing claim 1 , the base claim 1 , and the end piece are formed as a one-piece construction.3. The enclosure of claim 1 , wherein the antenna is further attached to or formed on an interior surface of the holed bored through the base.4. The enclosure of claim 1 , wherein the antenna is further attached to or formed on an exterior surface of the open end of the housing opposite the first surface of the base.5. The enclosure of claim 1 , wherein the antenna is further attached to or ...

Signal Carrier Modulation Using a Polarization Switchable Antenna

A system for modulating a communications signal using a switchable antenna. By using a polarization switchable antenna, modulation of a signal and/or carrier can be achieved by switching the polarization of antenna. Since the change of polarization is achieved by separate circuitry, the signal or message can be modulated by other methods and be modulated again by antenna.

MECHANICALLY RECONFIGURABLE PATCH ANTENNA

A polarization configurable patch antenna including a radiating layer, wherein the radiating layer has a corner truncated rectangular patch shape; and a feed capacitively coupled to the radiating layer for exciting the radiating layer, wherein the radiating layer is rotatable with respect to the feed, and the antenna is configured to generate a right-hand circularly polarized radiation field when the radiating layer is in a first rotational position and a left-hand circularly polarized radiation field when the radiating layer is in a second rotational position. 1. A polarization configurable patch antenna comprising:a radiating layer, wherein the radiating layer has a corner truncated rectangular patch shape; anda feed capacitively coupled to the radiating layer for exciting the radiating layer,wherein the radiating layer is rotatable with respect to the feed, and the antenna is configured to generate a right-hand circularly polarized radiation field when the radiating layer is in a first rotational position and a left-hand circularly polarized radiation field when the radiating layer is in a second rotational position.2. The antenna of claim 1 , wherein the second rotational position is offset 90 degrees from the first rotational position.3. The antenna of claim 1 , wherein the feed is located at least partially underneath the radiating layer.4. The antenna of claim 3 , wherein the feed is located at least partially underneath a midline of a first side of the radiating layer when the radiating layer is in the first rotational position and at least partially underneath a midline of a second side of the radiating layer when the radiating layer is in the second rotational position.5. The antenna of claim 1 , wherein the radiating layer has two truncated corners located diagonally opposite one another.6. The antenna of claim 1 , wherein the radiating layer is rotatable about a rotational axis that extends centrally through the radiating layer.7. The antenna of claim 6 ...