Braring calculation

Improvements in or relating to directive-antenna scanning apparatus

... 646,379. Aerials. SPERRY GYROSCOPE CO., Inc. March 24, 1947, No. 8043. Convention date, March 22, 1946. [Class 40 (vii)] In a directive antenna scanning apparatus of the type disclosed in Specification 616,522, arranged for spiral scanning by causing the beam to oscillate about a transverse nod axis and spinning said nod axis, means are provided for arresting the spin with the nod axis in a predetermined position, e.g. vertical, so that the beam then executes oscillatory scanning in a single plane. Means are also provided to enable the amplitude and period of nod oscillations to be simultaneously adjustable. An antenna assembly 11, comprising a paraboloidal reflector 12, is carried on bearings 13 and 131 supported in a yoke 14 rigidly connected to the outer sleeve 16 which is supported in the bearing 17. Thus the antenna assembly 11 can oscillate about the axis Y-Y and also rotate about the axis X-X. An inner tubular member 18 is slidably mounted within member 16 but keyed for ...

A rotable antenna apparatus

A rotatable antenna apparatus 10 comprises antenna signal processing means 35 mounted on a thermally conductive shaft 40 which is thermally coupled between the components of the signal processing means 35 and a heat sink 50 located within a fixed location relative to the rotatable shaft 40. An antenna assembly 30 is coupled to the signal processing means 35. A thermally conductive coupling structure 45 may be provided between the components and the shaft 40 which may include an elongate member which extends into a recess in the shaft and into a recess within a component interface structure 45. The component interface structure 45 may be formed in two parts which are connected together to sandwich a portion of the elongate member. A thermal paste may be applied between the elongate member and the component interface structure 45. The elongate member may comprise a heat pipe. A heat pad may be used between the one or more components and the component interface structure 45. The shaft 40 may ...

A rotable antenna apparatus

A rotatable antenna apparatus comprising; a fixed unit 20 for attachment of the apparatus to an external structure, and a rotatable unit 60 mounted on the fixed unit and comprising an aerial assembly 65 and processing circuitry 65 coupled to the antenna assembly for performing signal processing operations. An interface unit is coupled to both the fixed unit and the rotatable unit, and is used to route a cable to provide a wired connection from the fixed unit to the processing circuitry. The interface unit includes a cable housing 50 within which a length of the cable is enclosed in a coiled arrangement. A control mechanism constrains the amount to which the length of cable is wound and unwound within the cable housing so as to inhibit application of a stretching stress on the cable during rotation of the rotatable unit. Preferably the length of cable moves between an inner coil configuration (figure 4A) and an outer coil configuration (figure 6A). The cable housing may include a rotatable ...

Node role assignment in networks

There is provided a node for use in a network, the node comprising: communication circuitry to communicate with a management server. Bootstrap circuitry initially identifies an intermediate node from at least one available node in the network in response to the communication circuitry being unable to communicate with the management server directly. The communication circuitry is arranged to communicate with the management server indirectly via the intermediate node when unable to communicate with the management server directly. Role assignment circuitry assigns a role to be performed by the node in the network based on whether the communication circuitry communicates with the management server directly, or indirectly via an intermediate node. Embodiments describe use within a wireless feeder network where the nodes may be a Feeder Base Station or Feeder Terminal.

Improvements in or relating to radar directional antenna systems

... 1,008,377. Linkwork. ALBISWERK ZURICH A.G. May 27, 1963 [May 25, 1962], No. 21013/63. Heading F2K. [Also in Division H4] In a directional aerial for a radar system comprising a radiator and an associated reflector formed as a figure of revolution, separate drive means are provided for rotating and reciprocating the radiator and a coupler is provided to select either drive so that the aerial beam executes a conical scan or scans in a plane. The radiator is both pivoted and fed from a waveguide at a ball-joint 2 and is extended mechanically to a guide pin 3. On the guide pin slides a coupling piece 4 which is fitted at one end with a conical nose 13 and at the other with a bead 18, each capable of respective engagement in cones 12 and 17. One cone, 12, is rotated eccentrically by a motor 9 whilst the other, 17, is reciprocated by a link 16 containing a slot in which engages an eccentric pin driven by another motor 14. A third motor 8 drives the coupler 4 through a lost-motion coupling 7 and ...

Improvements in or relating to directional radio systems

581,696. Radiolocation ; pulse generating, amplifying and shaping circuits. HODGKIN, A. L. Sept. 16, 1943, No. 15242. [Class 40 (v)] In a pulse radiolocation equipment, particularly for use on aircraft to locate other aircraft, a narrow beam is caused to scan a substantially conical field of observation in alternately diverging and converging spiral paths, and echo signals from an object within the field are applied to a cathode-ray tube having a radial time-base which is rotated in synchronism the transmitter beam and is rendered visible by the echo signals to indicate the range and bearing of the object. General arrangement, Fig. 1. A control unit 1 (shown in detail in Fig. 4) supplies (1) switching pulses to a modulator 3 to control the transmission of pulses from a short-wave generator 11 ; (2) a sine wave of 2500 cycles per sec. to the rotary coil R of a phasing unit 5 ; (3) switching pulses to the receiver 7 to condition it for reception; and (4) switching pulses to the control grid of the cathode-ray tube 8 to condition it so that a reflected pulse will cause the beam to become visible. The same aerial system, comprising a dipole and parasitic reflector DA within a parabolic reflector P, is used for transmission and reception, being connected to the receiver 7 through a mixer 10 incorporating means for preventing substantially all of a transmitted pulse from passing to the receiver. Scanning. The reflector P is pivoted to a shaft M which is continuously rotated by a motor MO. The reflector is also mounted on arms A carrying rollers R riding on a cam C which is also continuously rotated by the motor MO through a coaxial shaft M1, but at a slightly lower speed. The main axis of the reflector is thus tilted to and fro through an angle of Π30 degrees producing a spiral sweep of the transmitted beam. A more detailed description of driving means for the scanner is described in Specification 580,170. Cathode-ray tube, Fig. 5 ; display indications. The rotor R, Fig. ...

Antenna arrangement

Radar-Richtantennenanordnung

Radar-Reflektor-Antenne

Method for automatically positioning a satellite dish antenna to satellites in a geosynchronous belt

A TVRO satellite dish antenna system mounted on the roof of a parked vehicle automatically determines its location and bearing relative to two geosynchronous satellites and then uses this information to accurately calculate the azimuths and elevations of any other geosynchronous satellites. A magnetic compass generates a magnetic bearing signal for the system. An estimated latitude and longitude for the vehicle are provide by the user based on the approximate geographic location of the vehicle. The estimated positions for a first geosynchronous satellite and a second geosynchronous satellite relative to the satellite dish antenna are calculated from this information. The satellite dish antenna is moved to an initial search position corresponding to the estimated position of the first satellite and then moved in a search pattern until the receiver detects a signal peak for a selected channel. The actual azimuth and elevation of the first satellite are calculated based on the position of ...

Method of Tracking Steerable Antennas on Platforms to Form an RF Communication Link

Steerable antenna on platforms, fixed or mobile, are tracked to form an RF communication link by setting the width of the main lobe of the antenna beam pattern to be greater than the initial pointing uncertainty region and then concurrently scanning and progressively reducing the widths of the main lobes as the pointing uncertainty region is reduced to first acquire and then track the opposing antenna. The width of the main lobe is reduced such that the width of the main lobe is approximately fixed for each block. The antennas at opposite ends of the communication link may be scanned with scan patterns that are orthogonal to each other such that the demodulation of the received signal levels to signal direction of arrival at each platform is solely a function of the scan pattern of the receive antenna.

SYSTEMS AND METHODS FOR DETECTING SATELLITE-BASED COMMUNICATION INTERFERENCE

Systems and methods for detecting and reducing signal interference affecting wireless communication with a mobile vehicle includes generating an interference signature based on a correlation multiple signal-quality characteristics of a desired target-signal that is received at an antenna assembly attached to the mobile vehicle, and adjusting the orientation of the antenna assembly based on a change or degradation in the interference signature to thereby improve wireless communication with the vehicle. 1. A method of reducing degradation of wireless communication with a mobile vehicle , the method comprising:receiving, via an antenna assembly including a preferred orientation and coupled to the mobile vehicle, a wireless target-signal;attaining, via one or more processors coupled to antenna assembly, a first type of signal-quality characteristic of the received wireless target-signal, the first type of signal-quality characteristic being indicative of a signal quality;attaining, via the one or more processors, a second type of signal-quality characteristic of the received wireless target-signal, the second type of signal-quality characteristic being indicative of a signal quality, wherein the first and second types of signal-quality characteristics are different types of signal-quality characteristics and each having a different functional dependence on a combination of signal and noise associated with the received wireless target-signal;generating, via the one or more processors, an interference signature associated with the received wireless target-signal and the preferred orientation of the antenna assembly, the interference signature including a correlation of the attained first signal-quality characteristic and the second signal-quality characteristic;analyzing, via the one or more processors, the generated interference signature to determine a change or degradation in the correlation of the first and second signal-quality characteristics; andadjusting, via the ...

Configurable antenna and method of operating such a configurable antenna

An antenna apparatus for use in a wireless network and method of operating such an antenna apparatus are provided. A wireless network controller provides a configuration of such an antenna apparatus, a method of operating such a wireless network controller, and a resulting wireless network. The antenna apparatus comprises a directional antenna and a uniform circular antenna array. The directional antenna can be rotatably positioned about an axis with respect to a fixed mounting portion of the apparatus in dependence on wireless signals received by the antenna array. The antenna array allows the antenna apparatus to receive wireless signals isotropically and thus to accurately monitor the wireless signal environment in which it finds itself. The antenna apparatus can thus monitor and characterize incoming signals, both from external interference sources and from other network nodes, and the directional antenna can then be positioned in rotation to improve the network throughput.

Antenna

A satellite television receiver antenna for use on seaborne vessels comprise a Cassegrain antenna comprising a parabolic main reflector 1A, and a hyperbolic sub-reflector 1B mounted at an angle slightly opposite from the center axis of the parabolic reflector 1A, the sub-reflector being driven by a motor 30 to rotate so as to cause the antenna reception pattern to perform a conical scan around the main axis of the parabolic reflector 1A. The rotational speed is an even multiple of the frequency of any amplitude modulation of the received signal, or of any electrical interference, and the received signal is measured at points rotationally spaced apart 180 degrees, so that the effects of modulation and/or electrical interference are cancelled. The measured signal strength at four positions spaced rotationally by 90° is used to derive power signals to drive pulse width modulation control azimith and elevation motors 46A, 46B. ...

Quality of service in wireless backhauls

An antenna apparatus and method of configuring a transmission beam for the antenna apparatus

A configurable antenna and method of operating such a configurable antenna

IMPROVEMENTS IN OR RELATING TO MILLIMETER AND SUB-MILLIMETER WAVE RADAR-RADIOMETRIC IMAGING

An antenna is provided that is configured to implement a combined radar and radiometric imaging method. The antenna comprises: a bearing device on which is rigidly mounted: rotating waveguide adapter which provides the output for the antenna; an electromechanical drive, the output shaft of which is defined as the main axis of rotation for the antenna and a position sensor. The antenna further comprises an antenna rotor, the rotation of which is configured to be controlled by the out- put shaft of the electromechanical drive of the bearing device. The antenna rotor comprises: at least one 2D diffraction grating; planar dielectric waveguide connected over a diffraction field to the 2D diffraction grating; a linear waveguide turn; and a feed adapter.

Device of exploration very directing, usable in particular for the distant target detection

RADIOMETRIC SYSTEM INTERFEROMETRIC ULTRA HIGH FREQUENCY HAS BALAYAGEMECANIQUE

METHOD AND DEVICE FOR ESTIMATING THE MISALIGNMENT OF AN ANTENNA AND METHOD AND DEVICE FOR TRACKING OF THE TRACKING AN ANTENNA USING SUCH METHOD AND DEVICE, BASED ON A HARMONIC ANALYSIS

L'invention concerne l'estimation du dépointage angulaire x d'une antenne radiofréquence pointant vers un mobile lent (S), émetteur radio ou cible radar selon un axe d'antenne (1a), l'antenne étant en communication radio ou pistage radar avec le mobile (S), le procédé comprenant des étapes suivantes, - application (E0) d'une trajectoire périodique prédéfinie à l'axe d'antenne (1a) ; - réception (E1) de signaux radiofréquences issus du satellite au cours d'une période de la trajectoire appliquée ; - décomposition (E4) harmonique de la puissance des signaux reçus en une composante fondamentale (H1) et au moins une composante harmonique (H2) ; - estimation (E5) du dépointage angulaire x à partir du rapport entre le terme fondamental et une composante harmonique.

Device for two-dimensional imaging of scenes by microwave scanning

For two-dimensional imaging of scenes through continuous passive or active microwave scanning, use is made of a fully mechanized directional antenna array comprising a main reflector ( 1 ), a primary radiator array ( 3 ) and a subreflector ( 2 ) having a small size in comparison to the main reflector and being tilted relative to the optical axis ( 7 ) of the directional antenna array. First drive means ( 8 ) are operative to rotate the subreflector ( 2 ) about the optical axis ( 7 ), and second drive means ( 17,18 ) are operative to move the total directional antenna array in a direction approximately vertical to the optical axis ( 7 ). The moving speed of the subreflector ( 2 ) is very high in comparison to that of the total directional antenna array. The shape of the main reflector ( 1 ), the shape of the subreflector ( 2 ), the primary radiator ( 3 ), the distance between primary radiator and subreflector and the distance between subreflector and main reflector as focusing parameters are attuned to each other in such a manner that, for a given scene distance, an optimum focusing and an optimum size of the field of view are achieved. The focusing parameters and the moving speeds of the two drive means are set in a manner allowing for a gapless, continuous scanning of the scene with the aid of the focusing spot ( 12 ) moving at the scene distance. Applicability in remote investigation, particularly in earth observation and in safety technology.

Multi-beam reflector antenna for satellite applications

A feed array is provided that may be installed in a reflector antenna provided with a single or dual reflector optics. The feed array includes a radiating array for transmitting/receiving radiofrequency signals, a digital beam forming network, a reception conversion unit for applying a frequency down-conversion and an analog-to-digital conversion to incoming radiofrequency signals to obtain incoming digital signals. The feed array includes a transmission conversion unit for applying a digital-to-analog conversion and a frequency up-conversion to outgoing digital signals generated by the digital beam forming network to obtain outgoing radiofrequency signals. The digital beam forming network processes the incoming digital signals by using a reception matrix, and generates the outgoing digital signals by using a transmission matrix, with the matrices computed based on electric field values measured by the radiating array in the focal region.

Antenna device, system, and transmission/reception method

According to one embodiment, an antenna device comprises an antenna panel including a first transmission antenna, a first reception antenna, and a second reception antenna, and a rotation device configured to rotate the antenna panel. A first radio wave is irradiated from the first transmission antenna when a rotation angle of the antenna panel is a first angle and a reflected radio wave of the first radio wave is received by the first reception antenna and the second reception antenna. A second radio wave is irradiated from the first transmission antenna when the rotation angle is a second angle and a reflected radio wave of the second radio wave is received by the first reception antenna and the second reception antenna.

A configurable antenna and method of operating such a configurable antenna

REFLECTOR ANTENNA WITH COINCIDENT TRANSMIT-RECEIVE BEAMS PLUS CONICAL SCANNED RECEIVE BEAM

DEVICE Of EMISSION RADIO FREQUENCY

DEVICE Of EMISSION RADIO FREQUENCY

La présente invention concerne un dispositif d'émission (10), comportant une source (12) de rayonnement électromagnétique, une antenne de type réseau (14) ayant un axe d'émission (T-T) et un conduit de guidage (16) du rayonnement électromagnétique de la source (12) à l'antenne (14). L'antenne (14) est rotative par rapport à la source de rayonnement (12) autour d'un axe (X-X), lequel axe (X-X) est décalé angulairement de l'axe d'émission (T-T) et le conduit de guidage (16) comporte un premier guide d'onde (22) s'étendant suivant l'axe (X-X) de rotation de l'antenne (14) et lié rigidement à l'antenne (14).

Mechanism improved for antennas of aircraft or all other air machines

Satellite high frequency radiometer system

The combination of conical sweep, the use of interferometer techniques and antenna sub networks provides higher resolution than previously available without added mechanical complexity.

Antenna with single motor positioning and related methods

An antenna may include a base, a gimbal mount coupled to the base, and a first guide body coupled to the base and having a first guide slot. The antenna may include a second guide body rotatably coupled with respect to the base and having a second guide slot defining a steerable intersection position with respect to the first guide slot. The antenna may also have an antenna member coupled to the gimbal mount and extending through the steerable intersection position, and an actuator configured to selectively rotate the second guide body to steer the antenna member.

Method and apparatus for mounting and coupling radio devices

Aspects of the subject disclosure may include, a communication device with a support structure having first and second annular contacts formed on an outer surface thereof, a first radio device having a first inner surface of a first housing opening with a third contact, and a second radio device having a second inner surface of a second housing opening with a fourth contact. The support structure is positioned in and passes through the first and second housing openings thereby positioning the first and second radio devices in a stacked arrangement, and, when in the stacked arrangement, the first and third contacts are aligned and the second and fourth contact are aligned to provide a coupling between the first and second radio devices. Other embodiments are disclosed.

Bearing calculation

A configurable antenna and method of operating such a configurable antenna

An antenna apparatus 50 comprising a directional antenna with a plurality of antenna array elements 55-57 connected to a transceiver with circuitry 64 which alters the beam pattern, where the circuitry 64 is shared between at least two array components. The radio frequency circuitry 64 sequentially connects array components, alters phase or gain and combines the outputs of these operations. The gain altering circuitry may provide fixed or variable gain and further summation circuitry may be provided between the switching and phase shift stages. The phase shifting circuitry may comprise a plurality of fixed length phase paths. The antenna apparatus may comprise a directional uniform linear antenna which is rotationally positioned about a mount 62 and an omni-directional uniform circular antenna array 59-61 with time multiplexing to control operation of both antennas. A set of beam patterns provide a range of directionality and interference nulling options. The aerials may provide point to ...

Quality of service in wireless backhauls

A feeder terminal comprises backhaul communication circuitry to connect to a communications network via a wireless backhaul, and provides an access base station with access to the wireless backhaul. Backhaul information circuitry determines congestion information relating to the wireless backhaul and communication circuitry enables communication with an access base station and provides the congestion information to the access base station. In response to a demand message from the access base station comprising quality of service requirements, the communication circuitry forwards the demand message to the communications network. Additionally the access base station apparatus provides one or more items of user equipment with access to the wireless backhaul. The access base station comprises requirement determination circuitry to determine at least one quality of service requirement from one or more items of the user equipment and access control circuitry to selectively control usage of the ...

METHOD AND DEVICE FOR ESTIMATING THE MISALIGNMENT OF AN ANTENNA AND METHOD AND DEVICE FOR TRACKING OF THE TRACKING AN ANTENNA USING SUCH METHOD AND DEVICE, BASED ON A HARMONIC ANALYSIS

IMPROVEMENTS IN OR RELATING TO MILLIMETER AND SUB-MILLIMETER WAVE RADAR-RADIOMETRIC IMAGING

An antenna is provided that is configured to implement a combined radar and radiometric imaging method. The antenna comprises: a bearing device on which is rigidly mounted: rotating waveguide adapter which provides the output for the antenna; an electromechanical drive, the output shaft of which is defined as the main axis of rotation for the antenna and a position sensor. The antenna further comprises an antenna rotor, the rotation of which is configured to be controlled by the out- put shaft of the electromechanical drive of the bearing device. The antenna rotor comprises: at least one 2D diffraction grating; planar dielectric waveguide connected over a diffraction field to the 2D diffraction grating; a linear waveguide turn; and a feed adapter.

Non-gimbaled pointer and tracking platform assembly

A low-cost mechanical pointing and tracking platform that does not use gimbals and to which a sensor may be attached for use in searching an area for a target located at some unknown point. This is achieved with the use of a shaft, mounted intermediate its ends in a ball and socket joint and carrying at its forward end a platform for mounting a sensor. The other end of the shaft passes through a radial slot in a first rotatable member and extends into a spiral groove in a second rotatable member coaxial with the first. By manipulating the rotation of the two members, the sensor can be made to scan a circular, conical, spiral, linear or any other fixed or programmed complex pattern, can locate a target at any point in a two-dimensional field of view and can be made to track a target once it is detected.

СПИРАЛЬНАЯ АНТЕННА

FIELD: antenna technology.SUBSTANCE: invention relates to antenna technology, in particular to broadband spiral antennas operating in the ultra-high frequency range as part of antenna systems for various purposes, including direction finding and tracking systems. In a spiral antenna containing a flat spiral, an exciting device and a stepped screen of metal rings located a quarter of the wavelength below the corresponding active areas of the flat spiral, in contrast to the prototype, the stepped screen is supplemented with metal conical surfaces of truncated straight cones located between the metal rings so that the outer circumference of each ring, except for the lower one, is galvanically connected by a conical surface to the inner circumference of the ring lying below.EFFECT: creation of a spiral antenna with an increased gain without sharp resonant changes in the operating frequency range, a simplified design and increased manufacturability.1 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 747 754 C1 (51) МПК H01Q 3/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H01Q 3/10 (2021.02) (21)(22) Заявка: 2020126712, 10.08.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 13.05.2021 (56) Список документов, цитированных в отчете о поиске: Sarah Mohamad et al., "Performance enhancement of a wideband spiral antenna using a stepped ground plane" / "Microwave and optical technology letters" / Vol. 56, No. 3, March 2014, p. 753-757. RU 2687895 C1, 16.05.2019. US 3945016 A1, 16.03.1976. RU 2422954 C2, 27.06.2011. (45) Опубликовано: 13.05.2021 Бюл. № 14 2 7 4 7 7 5 4 R U (54) СПИРАЛЬНАЯ АНТЕННА (57) Реферат: Изобретение относится к антенной технике, в частности к широкополосным спиральным антеннам, работающим в диапазоне сверхвысоких частот в составе антенных систем различного назначения, в том числе в системах пеленгации и сопровождения. Техническим результатом изобретения является ...

УСОВЕРШЕНСТВОВАНИЯ В ФОРМИРОВАНИИ РАДИОЛОКАЦИОННЫХ-РАДИОМЕТРИЧЕСКИХ ИЗОБРАЖЕНИЙ МИЛЛИМЕТРОВЫХ И СУБМИЛЛИМЕТРОВЫХ ВОЛН

1. Система формирования изображений, содержащая источник миллиметровых или субмиллиметровых волн и, по меньшей мере, одну антенну, сконфигурированную с возможностью осуществлять способ формирования комбинированных радиолокационных и радиометрических изображений, при этом антенна содержит:передающий выход для передачи миллиметровых или субмиллиметровых волн на объект, для которого должно формироваться изображение,опорное устройство, на котором жестко смонтированы:вращающийся волноводный переход, который обеспечивает выход для антенны;электромеханический привод, выходной вал которого определяется как главная ось вращения для антенны; идатчик положения;при этом антенна дополнительно содержит:ротор антенны, вращение которого сконфигурировано с возможностью управления посредством выходного вала электромеханического привода опорного устройства, при этом ротор антенны содержит:по меньшей мере, одну 2D дифракционную решетку;плоский диэлектрический волновод, связанный по дифракционному полю с 2D дифракционной решеткой;линейный волноводный изгиб; иоблучатель-адаптер.2. Система формирования изображений по п.1, в которой ротор антенны дополнительно содержит множество антенных элементов и блок фазирования, при этом каждый антенный элемент содержит плоский диэлектрический волновод, линейный волноводный изгиб и облучатель-адаптер, который обеспечивает выход в блок фазирования, и при этом блок фазирования сконфигурирован с возможностью обеспечивать вход во вращающийся волноводный переход.3. Система формирования изображений по п.2, в которой дифракционная решетка ротора антенны является общей для каждо� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2013 117 003 A (51) МПК H01Q 3/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2013117003/08, 07.09.2011 (71) Заявитель(и): РЭЙДИО ФИЗИКС СОЛЮШНЗ ЛТД (GB) Приоритет(ы): (30) Конвенционный приоритет: 13.09.2010 US 61/382,180; 13.09.2010 GB 1015207.2 (85) Дата начала рассмотрения заявки ...

Radiation scanning of large area of earth's surface - using sharply focussed aerial beam and tracing on surface circle with continuous forward motion

The surface of the earth is scanned by an aircraft of space craft. The scanning system uses a sharply focussing aerial whose beam illuminations on the surface circles with dia. (d). The aerial beam is continuously moved on a conical path, so that the surface is scanned along a meandering cycloid, i. e an approx. circle shape linearly moved forward at the craft speed. The aerial beam width, the rotation period (To) and craft speed (v) satisfy the equation d = vTo.

Einrichtung zur Schwenkung einer Richtantenne

A configurable antenna and method of operating such a configurable antenna

An antenna for communication in a wireless network with a directional antenna 55-57, mounting portion 51 and omni-directional uniform circular antenna array 59-61 where the directional antenna 55-57 is rotationally positioned depending on a wireless signal from the non-directional antenna 59-61. Iterative position optimisation of the directional antenna 55-57 using a rotational motor may be achieved using signal strength and directionality information. A characteristic signal may be used to identify other antenna systems and allow reception and transmission at synchronised times between different systems. The antenna system may act as a hub, terminal or backhaul node. The directional antenna 55-57 may be a uniform linear array with an oppositely orientated rear aerial with fewer directional elements. The linear array may have a set of beam patterns in order to provide interference nulling.

Low earth orbit satellite for electronic mail to hand-held terminals

ANTENNA ARRANGEMENT AND SCANNING DEVICE FOR RADIO-FREQUENCY SCANNING

The present invention relates to an antenna arrangement for radio-frequency scanning having an antenna carrier that is rotatable about an axis of rotation and that has multiple antenna arms (5), with an angular offset relative to one another in a plane perpendicular to the axis of rotation, on which radio-frequency antennas (6) are arranged. The radio-frequency lines (9) to the radio-frequency antennas (6) have frequency filters (10a–d) that each allow only one frequency band to pass. In this case, the frequency filters (10a-d) of the radio-frequency lines (9) allow different frequency bands, which do not overlap, to pass in different antenna arms (5). This allows the speed of advance of samples (2) for examination that are routed past the antenna arrangement (3) to be increased without great technical complexity, for the same speed of rotation of the antenna arrangement (3), in comparison with previous arrangements. The different filters (10a-d) mean that each antenna arm (5) is provided ...

Method for automatically positioning a satellite dish antenna to satellites in a geosynchronous belt

A receiver connected to the satellite dish antenna receives signals from an electronic compass for generating a magnetic direction signal. The approximate latitude and longitude values of the parked vehicle are displayed and the user of the system manually selects the latitude and longitude coordinates corresponding to the parked vehicle location. The receiver determines an initial search position for the satellite dish antenna based upon the magnetic reading and the entered latitude and longitude values. The satellite dish antenna is moved from an unstowed position to an initial search position. The satellite dish antenna is then moved in a first rectangular spiral search pattern to obtain a rough-tune position corresponding to the detection of a signal peak for a selected audio subcarrier frequency in a selected channel of a target satellite. The frequency selected is not present in corresponding selected channels of satellites near the target satellite. A fine-tune search is then performed ...

Bessel beam radar system using sequential spatial modulation

A spatially modulated Bessel beam radar system for enhancing the resolution with which a range and an azimuth of a plurality of closely spaced targets is determined. In a Bessel beam radar system, a Bessel beam is generated by sequential spatial modulation of the radar signal while maintaining a constant spatial polarization, and the return signal from one or more targets is processed to determine its Bessel function content. To spatially modulate the radar beam, the point at which the radar signal is transmitted is moved around a circular orbit. In a first embodiment of the spatially modulated Bessel beam radar system (80), a radar dome (86) mounted on the distal end of a mast (84) is pivoted around an orbit (90). The radar signal is transmitted in a predefined direction, along a Poynting vector that is generally aligned with the plane of the orbit. In a second embodiment (110), a plurality of parabolic antennas (116) are arranged in a spaced-apart circular array around a common center ...

Receiver capable of receiving radio signal with high quality

A receiver includes an array antenna, terminals, switches, a receiving circuit, a switch control unit and a reactance setting unit. Receiving circuit determines a received frequency and a received signal quality of a received signal by demodulating the received signal provided from the array antenna. The receiving circuit provides the received frequency to the reactance setting unit as a frequency setting signal, and provide the received signal quality to the switch control unit and the reactance setting unit. The reactance setting unit sets a set of the reactances corresponding to the received frequency in the terminals for each frequency, and the switch control unit switches connections in the switches to provide the received signal quality equal to or greater than the threshold.

Node role assignment in networks

A configurable antenna and method of operating such a configurable antenna

ANTENNA CONTROLLER

An antenna controller mounted on a movable body is provided for controlling antenna driving for satellite tracking. The antenna controller comprises a step tracking circuit for performing step tracking operation on a turning face of the movable body while receiving electromagnetic waves from a satellite, and for calculating an antenna direction in which an intensity of the electric wave is strongest. An antenna driving circuit drives the antenna in the antenna direction, while a reference output correcting circuit adds a correction quantity to a reference output of a rate sensor based on a result of the step tracking operation.

Device allowing to print with a rigid unit a movement in which its axis describes a cone of periodically variable opening

ROTATION TYPE ANTENNA AND ANTENNA BEAM DIRECTION ADJUSTING METHOD USING SAME

The present invention relates to a rotation type antenna and an antenna beam direction adjusting method using the same. According to an embodiment of the present invention, the rotation type antenna comprises: a rotation unit including a housing configured to accommodate an antenna element for transceiving an RF signal and configured to rotate around a fixing unit; the fixing unit including a fixing axis penetrating the housing; and a rotation control unit arranged between the rotation unit and the fixing unit and configured to control rotation of the rotation unit. COPYRIGHT KIPO 2016 ...

MOBILE SATELLITE TRACKING ANTENNA AND THE SYSTEM THEREOF

The invention is a performance increasing system improved to shorten the searching time of the satellite tracking antenna; to obtain the highest receiving power by making the fine tuning in a shorter time; and to enable to receive more qualified broadcasting; to find again the broadcasting immediately as soon as the obstacle disappears when various natural obstacles which have potential to come across are encountered while the vehicle is in motion and when the broadcasting is lost; and is a system thereof.

Systems and methods for detecting satellite-based communication interference

Systems and methods for detecting and reducing signal interference affecting wireless communication with a mobile vehicle includes generating an interference signature based on a correlation multiple signal-quality characteristics of a desired target-signal that is received at an antenna assembly attached to the mobile vehicle, and adjusting the orientation of the antenna assembly based on a change or degradation in the interference signature to thereby improve wireless communication with the vehicle.

Method and apparatus for managing beam in beamforming system

A pre-5th-generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-generation (4G) communication system such as long term evolution (LTE) is provided. In a beam update method of a terminal, measuring a beam reference signal (BRS) transmitted from a base station, determining whether a beam measurement information transmission condition is satisfied, if the beam measurement information transmission condition is satisfied, transmitting beam measurement information to the base station, receiving information about a base station transmitting beam from the base station, and updating information about a terminal receiving beam based on the received information about the base station transmitting beam.

気象レーダ装置及び気象観測方法

Low earth orbit satellite

A low earth orbit satellite to deliver electronic mail to hand held terminals has a high gain directional antenna, the beam direction of which scans a circle of points on the surface of the earth, such points seeing the satellite at a low angle above the horizon. The mass of the antenna may be coupled to a spring, torsion bar or magnet system arranged to form an oscillating spring-mass system. An electro-magnet or other means controllably excites or damps the oscillatory system up to a maximum of 720 degrees of angular movement peak to peak. The oscillation amplitude, satellite orientation, and radio transmission power and frequency are co-ordinated to effect optimum radio frequency, power and beam dwell time to best suit the terminals at particular parts of the earth's surface and to correct Doppler shift.

Bearing calculation

In order to improve the accuracy of determining the orientation of a body using GPS or another satellite or terrestrial positioning system, a location receiver which receives a RF signal is rotated or revolved around a circular path about an axis. A sensor provides an angle of the location receiver about the axis from a known reference point. The location receiver determines its position or the position of an associated antenna, which may be low-pass filtered. Using a cost minimizing function and/or correlation, calculation circuitry produces an output value indicative of an absolute bearing of the known point about the axis, based on a plurality of given angles of the location receiver about the axis from the known point, and a plurality of associated locations of the location receiver indicated by the signal received when the location receiver is at each of the given angles. The tilt of the body may also be determined.

A configurable antenna and method of operating such a configurable antenna

A wireless network apparatus comprising at least one antenna for communication in a wireless network with a directional antenna 55-57, mounting portion 51 and omni-directional uniform circular antenna array 59-61 where the directional antenna 55-57 is rotationally positioned depending on a wireless signal from the non-directional antenna 59-61. Iterative position optimisation of the directional antenna 55-57 using a rotational motor may be achieved using signal strength and directionality information. A characteristic signal may be used to identify other antenna systems and allow reception and transmission at synchronised times between different systems. The antenna system may act as a hub, terminal or backhaul node. The directional antenna 55-57 may be a uniform linear array with an oppositely orientated rear aerial with fewer directional elements. The linear array may have a set of beam patterns in order to provide interference nulling.

Wireless network configuration using path loss determination between nodes

A method and corresponding apparatus are provided for network configuration selection in a wireless network comprising a plurality of nodes. A subset of nodes of the plurality of nodes are configured to simultaneously participate in a sounding process, in which a node of the subset omni-directionally transmits a predeterminedsignal and in which other nodes of the subset of nodes sample the predetermined signal as received by an omni-directional antenna array of that node. Measurement reports are received from the subset of nodes, each measurement report comprising a signal source angle and a received signal strength. A path loss is determined in dependence on each measurement report to generate a set of path losses covering a plurality of transmitter node receiver node pairs. Then a directional configuration is selected for a directional antenna of each node of the subset of nodes to use in data transmission in dependence on the set of path losses.

Wireless network configuration using path loss determination between nodes

A rotable antenna apparatus

Determining a correction to be applied to a main beam of an antenna system for a moving vehicle

An antenna system 600, or apparatus, or method of operation, comprises: generating a main beam 104 in an initial direction and independently moving a measurement beam 304 to receive signals from directions to either side of the main beam’s initial direction; comparing the measurement beam signals at the said directions and using this to determine a correction to the initial main beam direction. The antenna system 600 may be suitable for use in vehicles. The initial main beam direction may be estimated in dependence on the relative bearing of another antenna system intended for a communication link and may involve a recorded position of the other antenna system and at least one of an estimated position of the antenna system and/or an estimated orientation of the antenna system. The estimates may involve satellite position data and/or position information which may be recoded in data storage means 608. The main and measurement beams 104, 304 may be used in communication between the said antenna ...

Improvements in or relating to millimeter and sub-millimeter wave radar-radiometric imaging

An antenna is provided that is configured to implement a combined radar and radiometric imaging method. The antenna comprises: a bearing device on which is rigidly mounted: rotating waveguide adapter which provides the output for the antenna; an electromechanical drive, the output shaft of which is defined as the main axis of rotation for the antenna and a position sensor. The antenna further comprises an antenna rotor, the rotation of which is configured to be controlled by the out- put shaft of the electromechanical drive of the bearing device. The antenna rotor comprises: at least one 2D diffraction grating; planar dielectric waveguide connected over a diffraction field to the 2D diffraction grating; a linear waveguide turn; and a feed adapter.

Improvement with the processes of automatic guidance control of a machine, devices by allowing the their application and implementation

High frequency satellite imaging radiometric synthetic aperture antenna having horizontal/vertical dipole sets each rotated round 180 degrees from last and composite response cross polarization reduced.

The antenna configuration has a number of horizontal (fH1-fH4) and vertical (fV1-fV4) dipole sets, which follow a set pattern of rotational response in the successive elements (eA1-eA4). Phase offsets of 180 degrees are created between successive dipole sets on the outputs, allowing the cross polarization component response to be removed.

Antenna

Method for automatically positioning a satellite dish antenna to satellites in a geosynchronous belt

A receiver connected to the satellite dish antenna receives signals from an electronic compass for generating a magnetic direction signal. The approximate latitude and longitude values of the parked vehicle are displayed and the user of the system manually selects the latitude and longitude coordinates corresponding to the parked vehicle location. The receiver determines an initial search position for the satellite dish antenna based upon the magnetic reading and the entered latitude and longitude values. The satellite dish antenna is moved from an unstowed position to an initial search position. The satellite dish antenna is then moved in a first rectangular spiral search pattern to obtain a rough-tune position corresponding to the detection of a signal peak for a selected audio subcarrier frequency in a selected channel of a target satellite. The frequency selected is not present in corresponding selected channels of satellites near the target satellite. A fine-tune search is then performed ...

Vorrichtung zur zweidimensionalen Abbildung von Szenen durch Mikrowellen-Abtastung und Verwendung der Vorrichtung

Zur zweidimensionalen Szenenabbildung durch kontinuierliche, passive oder aktive Mikrowellen-Abtastung dient eine vollmechanische Richtantennenanordnung mit Hauptreflektor (1), Primärstrahleranordnung (3) und einem relativ zum Hauptreflektor klein bemessenen Subreflektor (2), der bezüglich der optischen Achse (7) der Richtantennenanordnung geneigt ist. Erste Antriebsmittel (8) sorgen für eine Rotation des Subreflektors um die optische Achse und zweite Antriebsmittel (17, 18) für eine Bewegung der gesamten Richtantennenanordnung in einer Richtung zumindest angenähert senkrecht zur optischen Achse. Die Bewegungsgeschwindigkeit des Subreflektors ist zu derjenigen der gesamten Richtantennenanordrm, Primärstrahler, Abstand Primärstrahler-Subreflektor und Abstand Subreflektor-Hauptreflektor sind als Fokussierungsparameter so aufeinander abgestieine optimale Fokussierung und Gesichtsfeldgröße einstellt. Die Fokussierungsparameter und die Bewegungsgeschwindigkeiten der beiden Antriebsmittel sind so eingestellt, dass sich eine lückenlose kontinuierliche Szenenabtastung durch den sich im Szenenabstand bewegenden Fokussierungsfleck (12) ergibt. Anwendung bei Fernerkundung, insbesondere Erdbeobachtung und Sicherheitstechnik. For two-dimensional scene imaging by continuous, passive or active microwave scanning is a fully mechanical directional antenna assembly with main reflector (1), primary radiator assembly (3) and a relative to the main reflector small dimensioned sub-reflector (2), which is inclined with respect to the optical axis (7) of the directional antenna assembly , First drive means (8) provide for rotation of the subreflector about the optical axis and second drive means (17, 18) for movement of the entire directional antenna arrangement in a direction at least approximately perpendicular to the optical axis. The moving speed of the subreflector is the same as that of the entire directional antenna array, primary radiator, primary radiator subreflector distance, ...

Quality of service in wireless backhauls

A rotable antenna apparatus

A configurable antenna and method of operating such a configurable antenna

RADAR ALTIMETER WITH FORWARD LOOKING NM-WAVE TERRAIN AVOIDANCE RADAR

A radar altimeter (10) is described which includes a transmitter (12) for transmitting a radar signal, a receiver for receiving the reflected radar signal, and at least one antenna (20, 24) coupled to one or both of the transmitter and receiver. The altimeter also includes a forward facing millimeter wave (MMW) antenna (34) configured to move in a scanning motion and a frequency up/down converter (18) coupled to the MMW antenna, the transmitter, and the receiver, and a radar signal processor (30). The converter up converts a frequency received from the transmitter to a MMW frequency for transmission through the MMW antenna, and down converts frequencies received to a radar frequency which are output to the receiver. The radar signal processor controls scanning motion of the MMW antenna, processes signals received at the antenna for a portion of the scanning motion, and processes signals received at the MMW antenna for other portions of the scanning motion.

Sophisticated mechanism of exploration for reflectors of radar

SELF-POINTING WI-FI ANTENNA

A self-aiming directional Wi-Fi antenna system includes a directional antenna that is motorized. A motion controller operates the motors to move the antenna position to sources of Wi-Fi radio frequency (RF) transmissions, determines an SSID for each source that satisfies a selection criterion and stores a position data corresponding to each SSID. The directional Wi-Fi antenna is moved to a final position corresponding to the antenna position data for one of the SSIDs stored in memory. 1. A method of automatically aiming a directional Wi-Fi antenna system , comprising:actuating a motor to move a directional Wi-Fi antenna about at least one axis;detecting radio frequency (RF) signal targets automatically while the directional Wi-Fi antenna is moving;determining a Service Set Identifier (SSID) automatically for each RF signal target while the directional Wi-Fi antenna is moving;storing automatically in memory an antenna position data corresponding to each of the SSIDs that satisfy a selection criterion;moving the directional Wi-Fi antenna to a final position corresponding to the antenna position data for one of the SSIDs stored in memory.2. The method of claim 1 , further comprising determining a dynamic average RF energy value by averaging an RF value for a plurality of detected RF signal targets.3. The method of claim 2 , further comprising displaying on a screen of a user computing device all SSIDs that both satisfy the selection criterion and have RF energy values greater than the dynamic average energy value.4. The method of claim 1 , further comprising storing an RF energy value in memory corresponding to each of the SSIDs that satisfy a selection criterion.5. The method of claim 4 , wherein the selection criterion is unsecured Wi-Fi targets claim 4 , and wherein the step of moving the directional Wi-Fi antenna to the final position includes moving the directional Wi-Fi antenna to the final position corresponding to the antenna position data for the SSID stored ...

SELF-POINTING WI-FI ANTENNA

A self-aiming directional Wi-Fi antenna system includes a directional antenna that is motorized. A motion controller operates the motors to move the antenna position to sources of Wi-Fi radio frequency (RF) transmissions, determines an SSID for each source that satisfies a selection criterion and stores a position data corresponding to each SSID. The directional Wi-Fi antenna is moved to a final position corresponding to the antenna position data for one of the SSIDs stored in memory. 1. A method of automatically aiming a directional Wi-Fi antenna system , comprising:actuating a motor to move a directional Wi-Fi antenna about at least one axis;detecting radio frequency (RF) signal targets automatically while the directional Wi-Fi antenna is moving;determining a Service Set Identifier (SSID) automatically for each RF signal target broadcasting an SSID while the directional Wi-Fi antenna is moving;storing automatically in memory an antenna position data and the SSID corresponding to each RF signal target broadcasting an SSID while the directional Wi-Fi antenna is moving;receiving an SSID selection from a user; andmoving the directional Wi-Fi antenna to a final position corresponding to the antenna position data for one of the SSIDs stored in memory and corresponding to the SSID selection from the user.2. The method of claim 1 , further comprising determining a dynamic average RF energy value by averaging an RF value for a plurality of detected RF signal targets.3. The method of claim 2 , further comprising displaying on a screen of a user computing device all SSIDs that have RF energy values greater than the dynamic average energy value.4. The method of claim 1 , further comprising storing an RF energy value in memory corresponding to each RF signal target while the directional Wi-Fi antenna is moving.5. The method of claim 4 , wherein the step of moving the directional Wi-Fi antenna to the final position includes moving the directional Wi-Fi antenna to the final ...

ANTENNA APPARATUS AND CONTROL METHOD THEREOF

An antenna apparatus and a control method are provided. The antenna apparatus includes a first antenna, a second antenna, and a movable mechanism. The first antenna is operated on a first frequency band. The second antenna surrounds the first antenna and is operated on a second frequency band. The first and second antennas are disposed on the movable mechanism. The movable mechanism is further configured to steer a direction of the first and second antennas. Accordingly, the requirements of multiple frequency bands and beam scanning may be fulfilled.

Vehicle-mounted satellite signal receiving system

In einem Fahrzeug eingebauter Satellitenempfänger

An antenna apparatus and method of configuring a transmission beam for the antenna apparatus

An antenna configuration system comprises a rotatable antenna assembly configured to employ a transmission beam pattern selected from a plurality of transmission beam patterns; a controller to rotate the assembly to each of a multiple selected azimuth directions; signal quality metric determination means for each of the selected azimuth directions and transmission beam determination means to determine an output beam pattern and an output azimuth direction; the controller being arranged to rotate the antenna apparatus to the output azimuth direction and to employ the output beam pattern for a subsequent communication involving at least one wireless terminal. The assembly may rotate, at regular intervals, through a three hundred and sixty degree range. A level of service priority weighting for at least one wireless terminal may also be used in determining the output azimuth direction and the output beam pattern for a subsequent communication. A weighted harmonic mean process may be used in ...

Low earth orbit satellite for electronic mail to hand-held terminals

Steerable antenna system

MULTI-BEAM REFLECTOR ANTENNA FOR SATELLITE APPLICATIONS

Disclosed herein is a feed array for reflector antennas. In particular, said feed array is designed to be installed in a reflector antenna provided with a single or dual reflector optics and includes: a radiating array arranged in a focal region of the single/dual reflector optics and operable to transmit and receive radiofrequency signals; digital beam forming means; reception conversion means connected between the radiating array and the digital beam forming means and designed to apply a frequency down-conversion and an analog-to-digital conversion to incoming radiofrequency signals received by the radiating array thereby obtaining incoming digital signals, and provide the digital beam forming means with the incoming digital signals; and transmission conversion means connected between the radiating array and the digital beam forming means and designed to apply a digital-to-analog conversion and a frequency up-conversion to outgoing digital signals generated by the digital beam forming ...

RADIOMETRIC SYSTEM INCLUDING/UNDERSTANDING an ANTENNA OF the TYPE HAS SYNTHESIS Of OUVERTUREET ITS APPLICATION IN IMAGERY ULTRA HIGH FREQUENCY

Coincident transmit-receive beams plus conical scanned monopulse receive beam

An antenna system includes a feedhorn, main reflector, sub-reflector, and frequency selective member. The sub-reflector includes an axially symmetrical reflecting surface. The frequency selective member includes an axially non-symmetrical reflecting surface. The frequency selective member transmits signals having a first frequency from the feedhorn to the sub-reflector. These signals are symmetrically reflected by the sub-reflector to the main reflector. The frequency selective member reflects signals having a second frequency from the main reflector to the feedhorn. These signals are reflected at a small conical angle by the frequency selective member to the feedhorn. In this way, the present transmit/receive system provides coincident transmit and receive signals with only conically scanned receive signals.

Self-pointing Wi-Fi antenna

A self-aiming directional Wi-Fi antenna system includes a directional antenna that is motorized. A motion controller operates the motors to move the antenna position to sources of Wi-Fi radio frequency (RF) transmissions, determines an SSID for each source that satisfies a selection criterion and stores a position data corresponding to each SSID. The directional Wi-Fi antenna is moved to a final position corresponding to the antenna position data for one of the SSIDs stored in memory.

In einem Fahrzeug eingebauter Satellitenempfänger

Improvements in or relating to millimeter and sub-millimeter mave radar-radiometric imaging

A configurable antenna and method of operating such a configurable antenna

An antenna apparatus and method of performing spatial nulling within the antenna apparatus

This application relates to the selection of a receive beam pattern (Fig. 7) in a multi-antenna base station 200 which is to use the beam pattern to simultaneously communicate with a plurality of wireless terminals 205, 210, whilst mitigating interference from other sources 215, 220. The invention may be applied in a wireless backhaul. In which case the base station is a feeder base station (31, Fig. 1) with a wired connection to a core network, and the wireless terminals are feeder terminals (27-29, Fig. 1). During a nulling test operation, each of a plurality of reception beam patterns are tried in succession. For each beam pattern a link quality metric is determined for each of the plurality of wireless terminals. The quality metric values are used to select one of the reception beam patterns for use in a subsequent communication with the plurality of wireless terminals. The quality metric may be throughput. The beam patterns may be produced using a combination of antenna selection, ...

ANTENNA CONTROLLER

Node role assignment in networks

There is provided a node for use in a network, the node comprising: communication circuitry to communicate with a management server. Bootstrap circuitry initially identifies an intermediate node from at least one available node in the network in response to the communication circuitry being unable to communicate with the management server directly. The communication circuitry is arranged to communicate with the management server indirectly via the intermediate node when unable to communicate with the management server directly. Role assignment circuitry assigns a role to be performed by the node in the network based on whether the communication circuitry communicates with the management server directly, or indirectly via an intermediate node. Embodiments describe use within a wireless feeder network where the nodes may be a Feeder Base Station or Feeder Terminal.

Improvements in or relating to scanning devices for use in pulse reflecting systems

... 616,522. Toothed gearing; converting rotary into oscillatory motion. SPERRY GYROSCOPE CO., Inc. Feb. 15, 1944, No. 2826. Convention date, April 10, 1942. [Class 80 (i)] [Also in Group XL (c)] In a radio beam scanning device, a radiator or reflector has a rotary motion which may be combined with an oscillatory or nodding motion about an axis approximately perpendicular to the direction of the beam and to the axis of rotary motion. The parabolic reflector 1 is carried by a yoke 7 integral with a casing provided with a sleeve 9 driven from a gearwheel 17 on a main driving shaft 13. A gear 19 on the same shaft drives a sleeve 25 integral with a disc 27 having a cam groove 29 engaged by a follower 31 which actuates a rack 33 in a direction at right angles to the plane of the paper. The movement of the rack 33 rotates gearing 35, 41, 43 to produce oscillation of the reflector about the axis 3. The nodding motion is interrupted by the operation of a solenoid 77 which moves sleeve 91 downwardly ...

SPIRAL SCAN GENERATOR

Sub-sampling antenna elements

WIRELESS TELECOMMUNICATIONS NETWORK

A telecommunications network comprises multiple nodes linked by line-of-sight (LOS) signals. Directional antennas are located outside concealment screens to avoid attenuation through multiple screening layers. Directional LOS aiming between nodes is accomplished by fully rotable radomes within which multiple antennas are contained or by rotation of gimbaled antennas within the radomes. Network architecture is configured for both azimuthal and elevational LOS antenna aiming, with redundancy to re-route around disabled nodes. 1. A telecommunications network comprising:multiple network nodes, wherein each network node comprises one or more transceivers and/or transmitters, and wherein each of the one or more transceivers and/or transmitters comprises a central processing unit (CPU) and an integrated circuit (IC) board, and wherein the IC board comprises a signal amplifier and one or more directional antennas, and wherein the CPU is electrically connected by at least one connection cable to the directional antennas and the signal amplifier;one or more concealment screens, wherein each concealment screen has a screen interior and a screen exterior, and wherein each of the IC boards is located at least partially within the screen interior of one of the concealment screens, and wherein each directional antenna is located in the screen exterior of each of the concealment screens, such that each of the directional antennas transmits and/or receives signals which do not pass through any one of the concealment screens.2. The telecommunications network according to claim 1 , wherein each of the directional antennas is fully or partially enclosed within a radome claim 1 , which is either a spherical radome or a cylindrical radome claim 1 , and wherein each spherical radome is fully rotatable in both an azimuthal direction and an elevational direction claim 1 , and wherein each cylindrical radome is fully rotatable in either the azimuthal direction or the elevational direction ...

Device and Method for Adaptable Electromagnetic Doppler Surface

A method to create an electromagnetic Doppler surface comprising the steps of using an array of conductive elements, wherein the conductive elements mechanically move in individual orbits, and wherein the conductive elements are configured to combine and form a Doppler surface; using mechanical, phase-induced motion as a mechanism by which to move the conductive elements in individual orbits; creating a surface with a controllable Doppler return using two-dimensional motion. 1. A method to create an electromagnetic Doppler surface comprising the steps of:using an array of conductive elements, wherein the conductive elements mechanically move in individual orbits, and wherein the conductive elements are configured to combine and form a Doppler surface;using mechanical, phase-induced motion as a mechanism by which to move the conductive elements in individual orbits;creating a surface with a controllable Doppler return using two-dimensional motion.2. The method of claim 1 , wherein the surface is created using three-dimensional motion.3. The method of claim 1 , further comprising the step of providing each element a phase offset from the surrounding elements.4. The method of claim 3 , further comprising the step of providing a network of gears and rotating ball bearings to form the conductive elements.5. The method of claim 1 , further comprising the step of using the Doppler surface to represent a time-resolved claim 1 , fully-developed sea.6. The method of claim 5 , further comprising the step of evaluating the feasibility of the electromagnetic Doppler surface for heave experiments in ship design.7. A method comprising:applying modeling and simulation techniques to build, design, and implement a two-dimensional mechanical Doppler surface, wherein the Doppler surface comprises an array of conductive elements that mechanically move in individual orbits;controlling the Doppler surface using a dense array of microprocessors, sensors, and actuator systems;comparing a ...

COMMUNICATION SYSTEM

A communication system according to one embodiment comprises: a communication device including a tracking unit which rotates with respect to a first axis, a second axis, and a third axis that are orthogonal to each other and which performs radio-wave communication with a moving object moving within the field of view; and a controller for controlling the communication device so that the tracking unit rotates with respect to the first axis and the second axis in the range of a first trajectory angle of the moving body and rotates with respect to the second axis and the third axis in the range of a second trajectory angle of the moving object. 1. A communication system comprising:a communication device comprising a tracker configured to rotate with respect to a first axis, a second axis, and a third axis that are orthogonal to each other and perform radio-wave communication with a moving object moving within a field of view; anda controller configured to control the communication device based on a trajectory angle of the moving object,wherein the controller controls the communication device so that the tracker rotates with respect to the first axis and the second axis in a range of a first trajectory angle of the moving object and rotates with respect to the second axis and the third axis in a range of a second trajectory angle of the moving object.2. The communication system of claim 1 , wherein the controller prevents the tracker from rotating with respect to the third axis in the range of the first trajectory angle.3. The communication system of claim 1 , wherein the controller determines a rotation angle for the tracker with respect to the third axis to maintain a status in which the tracker tilts by the trajectory angle of the moving object in the range of the second trajectory angle.4. The communication system of claim 1 , wherein the controller prevents the tracker from rotating with respect to the first axis in the range of the second trajectory angle.5. The ...

Radio Frequency Life Detection Radar System

Trapped or confined individuals may be located and rescued by detecting their vital signs (e.g., chest movement or heart beat) using reflected, radio frequency signals over a range of multiple antenna polarities. 1transmitting radio frequency signals towards the trapped or confined individual from a fixed, rotating transmitter;changing the polarity of one or more of the transmitted signals;receiving one or more reflected signals from the trapped or confined individual at one or more rotating receivers, each reflected signal corresponding to a transmitted signal; andcompleting a short-time Fourier transform and time frequency analysis to detect movement of the trapped or confined individual based on the received signals.. A method for detecting vital signs of a trapped or confined individual comprising: This application claims the benefit of priority from U.S. Provisional Application No. 62/924,110 (the “'110 Application”) filed Oct. 21, 2019. This application incorporates by reference the entire disclosure of the '110 Application as if set forth in full herein.This section introduces aspects that may be helpful to facilitate a better understanding of the described invention(s). Accordingly, the statements in this section are to be read in this light and are not to be understood as admissions about what is, or what is not, in the prior art.Major natural disasters, such as earthquakes, tsunamis or storms will likely cause infrastructure damage leading to injuries, significant loss of life, and people trapped beneath debris. Typically, immediate search and rescue operations are required in order to save lives because the difference between life and death could be a matter of hours. It is therefore essential for first responders to have a clear understanding of the location and health status of injured and/or trapped individuals. To ascertain such information first responders implement so-called “life detection” techniques such using trained search dogs, radar, optical, ...

Millimeter And Sub-Millimeter Wave Radar-Radiometric Imaging

An antenna is provided that is configured to implement a combined radar and radiometric imaging method. The antenna comprises: a bearing device on which is rigidly mounted: rotating waveguide adapter which provides the output, tor the antenna; an electromechanical drive, the output shaft of which is defined as the main axis of rotation for the antenna and a position sensor. The antenna further comprises an antenna rotor; the rotation of which is configured to be controlled by the output shaft of the electromechanical drive of the bearing device. The antenna rotor comprises: at least one 2D diffraction grating; planar dielectric waveguide connected over a diffraction field to the 2D diffraction grating; a linear waveguide turn; and a feed adapter.

BEAMFORMING TRAINING

Provided are a method and apparatus for performing beamforming training in a wireless local area network. The apparatus receives a plurality of beacon frames for sector sweep in a beacon transmission interval (BTI) from an access point (AP). At least one beacon frame of the plurality of beacon frames includes overload information which indicates an overload state. The apparatus performs a random backoff on a plurality of channels during association-beamforming training (A-BFT) consequent to the BTI based on the overload information. 1. A method for performing beamforming training in a wireless local area network , the method comprises:receiving, by a station (STA), a plurality of beacon frames for sector sweep in a beacon transmission interval (BTI) from an access point (AP), wherein at least one beacon frame of the plurality of beacon frames includes overload information which indicates an overload state; andperforming, by the STA, a random backoff on a plurality of channels during association-beamforming training (A-BFT) consequent to the BTI based on the overload information.2. The method of claim 1 , wherein the overload information comprises an overload indicator indicating the overload state claim 1 , a responder sector sweep (RSS) backoff and an RSS retry limit.3. The method of claim 2 , wherein the RSS backoff and the RSS retry limit are commonly applied to the plurality of channels.4. The method of claim 2 , wherein the overload information comprises a plurality of RSS backoffs for the plurality of channels and a plurality of RSS retry limits for the plurality of channels.5. The method of claim 2 , wherein the overload information comprises a plurality of overload indicators for the plurality of channels.6. The method of claim 2 , wherein the performing of random backoff from the plurality of channels comprises:selecting, by the STA, randomly a random value for each channel based on the RSS backoff when the overload indicator indicates an overload state; ...

WIRELESS NETWORK CONTROLLER AND METHOD OF CONTROLLING A WIRELESS NETWORK

An antenna apparatus for use in a wireless network and method of operating such an antenna apparatus are provided. A wireless network controller provides a configuration of such an antenna apparatus, a method of operating such a wireless network controller, and a resulting wireless network. The antenna apparatus comprises a directional antenna and a uniform circular antenna array. The directional antenna can be rotatably positioned about an axis with respect to a fixed mounting portion of the apparatus in dependence on wireless signals received by the antenna array. The antenna array allows the antenna apparatus to receive wireless signals isotropically and thus to accurately monitor the wireless signal environment in which it finds itself. The antenna apparatus can thus monitor and characterise incoming signals, both from external interference sources and from other network nodes, and the directional antenna can then be positioned in rotation to improve the network throughput. 1. Apparatus for controlling a wireless network comprising:an input to receive signal strength information and direction information from at least one antenna apparatus in the wireless network;configuration optimisation circuitry to perform an iterative wireless network optimisation procedure to determine at least one rotational position for the at least one antenna apparatus on the basis of the signal strength information and the direction information received, wherein the iterative wireless network optimisation procedure iterates in a direction of reduced interference for the at least one antenna apparatus; andinstruction transmission circuitry configured to send at least one rotational positioning instruction to at least one antenna apparatus in the wireless network to cause the at least one antenna apparatus to rotationally position its directional antenna in accordance with the at least one rotational positioning instruction.2. The apparatus as claimed in claim 1 , wherein the iterative ...

SYSTEMS AND METHODS FOR DETECTING SATELLITE-BASED COMMUNICATION INTERFERENCE

Systems and methods for detecting and reducing signal interference affecting wireless communication with a mobile vehicle includes generating an interference signature based on a correlation multiple signal-quality characteristics of a desired target-signal that is received at an antenna assembly attached to the mobile vehicle, and adjusting the orientation of the antenna assembly based on a change or degradation in the interference signature to thereby improve wireless communication with the vehicle. 1. A method of reducing degradation in wireless communication during normal operation of a communication system including a signal source and a mobile vehicle having a coupled antenna assembly , the method comprising:receiving, via one or more processors coupled to the antenna assembly of the mobile device, a wireless target-signal from the signal source;attaining, via the one or more processors, a first type of signal-quality characteristic of the received wireless target-signal received at an initial orientation of the antenna assembly, the first type of signal-quality characteristic being indicative of a signal quality;attaining, via the one or more processors, a second type of signal-quality characteristic of the received wireless target-signal, the second type of signal-quality characteristic being indicative of the signal quality, wherein the first and second types of signal-quality characteristics are different types of signal-quality characteristics and each having a different functional dependence on a combination of signal and noise associated with the received wireless target-signal;generating, via the one or more processors, an interference signature including a correlation of the attained first signal-quality characteristic and the second signal-quality characteristic; andassociating the generated interference signature with the signal source.2. The method of reducing degradation in wireless communication of claim 1 , further comprising:storing, via the ...

Multi-Beam Reflector Antenna for Satellite Applications

A feed array for reflector antennas is provided that may be installed in a reflector antenna provided with a single or dual reflector optics and that includes: a radiating array arranged in a focal region of the single/dual reflector optics and operable to transmit and receive radiofrequency signals; digital beam forming means; reception conversion means connected between the radiating array and the digital beam forming means and designed to apply a frequency down-conversion and an analog-to-digital conversion to incoming radiofrequency signals received by the radiating array thereby obtaining incoming digital signals, and provide the digital beam forming means with the incoming digital signals; and transmission conversion means connected between the radiating array and the digital beam forming means and designed to apply a digital-to-analog conversion and a frequency up-conversion to outgoing digital signals generated by the digital beam forming means thereby obtaining outgoing radiofrequency signals, and provide the radiating array with the outgoing radiofrequency signals to be transmitted by said radiating array.

Method and device for estimating the squint of an antenna and method and device for following the pointing of an antenna implementing such a method and device, based on a harmonic analysis

A calibrated measurement of the angular misalignment x of a radiofrequency antenna pointing towards a slow mobile, radio transmitter along an antenna axis, the antenna being in radio communication with the mobile.

ANTENNA POSITIONING SYSTEM WITH AUTOMATED SKEWED POSITIONING

A portable antenna system including a reflector with a center axis, a feed at the center axis of the reflector, a post with a rotatable bracket on the post. The system also includes a skew drive mounted to the bracket and having a first output coupled to the reflector at the center axis thereof to adjust the skew angle of the reflector, an elevation motor configured to rotate the rotatable bracket to vary the elevation of the reflector, and an azimuth motor configured to rotate the post to vary the azimuth of the reflector. 1. A portable antenna system comprising:a reflector with a center axis;a feed at the center axis of the reflector;a post with a rotatable bracket on the post;a skew drive mounted to the bracket and having a first output coupled to the reflector at the center axis thereof to adjust the skew angle of the reflector;an elevation motor configured to rotate the rotatable bracket to vary the elevation of the reflector; andan azimuth motor configured to rotate the post to vary the azimuth of the reflector.2. The antenna system of further including a transceiver coupled to the skew drive.3. The antenna system of in which the skew drive includes a second output coupled to the transceiver.4. The antenna system of in which the skew drive is configured to rotate the first output at the same rate as the second output.5. The antenna system of in which the post includes a distal housing and the rotatable bracket is rotatably attached to said distal housing.6. The antenna system of in which the elevation motor is fixed inside said housing and includes an output drive coupled to the rotatable bracket.7. The antenna system of further including a base unit supporting the post.8. The antenna system of in which the base unit includes an azimuth motor configured to rotate the post with respect to the base unit.9. The antenna system of in which the base unit includes a computer subsystem configured to control the skew drive claim 7 , the elevation motor claim 7 , and ...

ANTENNA CONTROL METHOD, APPARATUS AND COMPUTER STORAGE MEDIUM

An antenna control method, communications positioning apparatus and computer storage medium is provided. The method is used in a communications positioning apparatus. The communications positioning apparatus comprises a communications antenna and a rotation device. The communications antenna comprises at least two antennas. The rotation device drives the communications antenna to rotate, wherein the method comprises: acquiring a first command, wherein the first command turns on a positioning mode; in response to the first command, acquiring angle information corresponding to the communications antenna and a beacon; in accordance with the angle information, determining corresponding rotation parameters of the rotation device, wherein the rotation parameters comprise at least a rotation direction and a rotation angle; and in accordance with the rotation parameters, controlling the rotation device to drive the rotation direction and rotation angle corresponding to the communications antenna. 1. An antenna control method that is used in a communications positioning apparatus comprising a communications antenna and a rotation device , wherein the communications antenna comprises at least two antennas and the rotation device drives the communications antenna , the method comprising:acquiring a first command, wherein the first command turns on a positioning mode;in response to the first command, acquiring angle information corresponding to the communications antenna and a beacon;in accordance with the angle information, determining corresponding rotation parameters of the rotation device, wherein the rotation parameters comprise at least a rotation direction and a rotation angle; andin accordance with the rotation parameters, controlling the rotation device to drive the rotation direction and the rotation angle corresponding to the communications antenna, such that the beacon is on a perpendicular bisector of a front surface of the communications antenna, or such that the ...

METHOD AND APPARATUS FOR MANAGING BEAM IN BEAMFORMING SYSTEM

A pre-5th-generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-generation (4G) communication system such as long term evolution (LTE) is provided. In a beam update method of a terminal, measuring a beam reference signal (BRS) transmitted from a base station, determining whether a beam measurement information transmission condition is satisfied, if the beam measurement information transmission condition is satisfied, transmitting beam measurement information to the base station, receiving information about a base station transmitting beam from the base station, and updating information about a terminal receiving beam based on the received information about the base station transmitting beam. 1. A method by a terminal , the method comprising:measuring a beam reference signal (BRS) transmitted from a base station;determining whether a beam measurement information transmission condition is satisfied;if the beam measurement information transmission condition is satisfied, transmitting beam measurement information to the base station;receiving information about a base station transmitting beam from the base station; andupdating information about a terminal receiving beam based on the received information about the base station transmitting beam.2. The method of claim 1 , wherein the measuring of the BRS includes measuring a first type reference signal and measuring a second type reference signal in a region identified based on the measured first type reference signal.3. The method of claim 1 , further comprising:when a request for a beam measurement information report is received from the base station, transmitting the beam measurement information to the base station.4. The method of claim 1 , wherein the beam measurement information transmission condition includes instructing the terminal to report the beam measurement information if an absolute value of a difference between beam quality information for the n-th BRS and beam quality ...

Antenna Positioning System

An antenna positioning system has a spindle with a bearing surface extending upward from a base. An azimuth gear is centered on the base around the spindle. An antenna support rotatably supports the antenna to allow elevational rotation of the antenna. The antenna support also has a recess with a shape complementary to the bearing surface of the spindle so that the antenna support is rotatably supported on the spindle to allow azimuth rotation of the antenna. The bearing surface and recess can be substantially conical in shape. An azimuth motor on the antenna support engages the azimuth gear to control azimuth rotation of the antenna. 1. An antenna positioning system comprising:a base;an antenna;a spindle extending upward from the base and having a bearing surface;an azimuth gear on the base centered around the spindle;an antenna support rotatably supporting the antenna to allow elevational rotation of the antenna, and having a recess with a surface complementary to the bearing surface of the spindle so that the antenna support is rotatably supported on the spindle allowing azimuth rotation of the antenna; andan azimuth motor on the antenna support engaging the azimuth gear to control azimuth rotation of the antenna.2. The antenna positioning system of wherein the recess in the antenna support has a bearing surface with a shape complementary to the bearing surface of the spindle3. The antenna positioning system of wherein the bearing surface of the spindle is substantially conical.4. The antenna positioning system of wherein the spindle is hollow claim 1 , and wherein the spindle and recess further comprise aligned holes allowing wiring to pass through the spindle and antenna support.5. The antenna positioning system of wherein the base further comprises a passage below the azimuth gear allowing wiring to pass through the spindle and recess.6. The antenna positioning system of further comprising a motor on the antenna support controlling the elevation of the antenna ...

TOPOLOGY DETERMINATION OF A FILLING MATERIAL SURFACE WITH UNIFORM LINE SCANNING

A fill level measurement device for determining a topology of a filling material surface is provided, including an antenna apparatus including an array of radiator elements and a rotatable mount configured to rotate the antenna apparatus about an axis that is in parallel with the array, such that a plurality of emission angles of the antenna apparatus are electronically and mechanically settable relative to the filling material surface without local overscanning occurring. 112.-. (canceled)13. A fill level measurement device for determining a topology of a filling material surface , comprising:an antenna apparatus comprising an array of radiator elements configured to transmit and/or receive electromagnetic signals; anda first rotatable mount configured to rotate the antenna apparatus about a non-vertical axis,wherein the device is configured to electronically and mechanically set a plurality of emission angles and/or receiving angles of the antenna apparatus relative to the filling material surface.14. The fill level measurement device according to claim 13 , wherein the non-vertical axis is in parallel with the array.15. The fill level measurement device according to claim 13 ,wherein the array is a unidimensional array that extends in a longitudinal direction, andwherein the axis is in parallel with the longitudinal direction.16. The fill level measurement device according to claim 13 , wherein the device is further configured to set the plurality of emission angles and/or receiving angles electronically by digital beam-forming processes.17. The fill level measurement device according to claim 13 , wherein the device is further configured to set the plurality of emission angles and/or receiving angles electronically by analogue phase shifters and/or by analogue switches.18. The fill level measurement device according to claim 13 , further comprising an additional rotatable mount configured to rotate the antenna apparatus about a shaft that is not in parallel with ...

Circuit architecture for distributed multiplexed control and element signals for phased array antenna

The phased array antenna system is described. The phased array antenna system formed on one or more layers of a printed circuit board (PCB). The phased array antenna system be may include a beam forming network to convert between one or more element signals and a beam signal. The phased array antenna system may include one or more control circuits, where each control circuit may receive the element signals for corresponding antenna element. Each of the control circuits may further may establish a control signal path and an element signal path between the antenna elements and the beamforming network, where the signal path may carry multiplexed element and control signals. The control circuits may include a signal adjustment circuit that may adjust the corresponding element signal (e.g., in phase or amplitude) based on the control signal.

METHOD AND APPARATUS FOR INSTALLATION AND ALIGNMENT OF RADIO DEVICES

Aspects of the subject disclosure may include, a communication device with a group of radio devices connected with a support structure, where the support structure is positioned in and passes through housing openings in each radio device to provide a stacked arrangement. One or more radio device is rotatable with respect to the support structure to enable adjusting a first orientation of a directional antenna therein. Other embodiments are disclosed. 1. A communication device comprising:a support structure having a cylindrical shape and comprising an antenna;a connection structure that physically connects the support structure with a utility structure; anda first radio device secured to the support structure, wherein the first radio device has a first radio housing with a first housing opening therethrough, wherein the support structure is positioned in and passes through the first housing opening, wherein the first radio device comprises first radio components associated with transmitting first wireless signals, receiving the first wireless signals, or a combination thereof, and wherein the first radio device has a first coupling structure that enables coupling the first radio components to the antenna of the support structure.2. The communication device of claim 1 , further comprising:a second radio device connected with the support structure, wherein the second radio device has a second radio housing with a second housing opening therethrough, wherein the support structure is positioned in and passes through the second housing opening, wherein the second radio device comprises second radio components associated with transmitting second wireless signals, receiving the second wireless signals, or a combination thereof, wherein the first wireless signals and the second wireless signals utilize different communication protocols, and wherein the first and second radio devices are positioned in a stacked arrangement.3. The communication device of claim 2 , wherein the ...

METHOD AND APPARATUS FOR MOUNTING AND COUPLING RADIO DEVICES

Aspects of the subject disclosure may include, a communication device with a support structure having first and second annular contacts formed on an outer surface thereof, a first radio device having a first inner surface of a first housing opening with a third contact, and a second radio device having a second inner surface of a second housing opening with a fourth contact. The support structure is positioned in and passes through the first and second housing openings thereby positioning the first and second radio devices in a stacked arrangement, and, when in the stacked arrangement, the first and third contacts are aligned and the second and fourth contact are aligned to provide a coupling between the first and second radio devices. Other embodiments are disclosed. 1. A communication device comprising:a support structure having a cylindrical shape with an outer surface, wherein the support structure has a plurality of first contacts formed on the outer surface, wherein each of the plurality of first contacts is an annular contact circumscribing the outer surface; anda first radio device connected with the support structure, wherein the first radio device has a first radio housing with a first housing opening therethrough, wherein the support structure is positioned in and passes through the first housing opening, wherein the first radio device comprises first radio components associated with transmitting first wireless signals, receiving the first wireless signals, or a combination thereof, wherein the first housing opening has a first inner surface with a first coupling structure, wherein the first coupling structure comprises a plurality of second contacts, and wherein each of the plurality of second contacts corresponds to and aligns with a corresponding one of the plurality of first contacts formed on the outer surface of the support structure.2. The communication device of claim 1 , wherein the first coupling structure comprises a biasing member that ...

ANTENNA APPARATUS AND ANTENNA DIRECTION CONTROL METHOD

An antenna apparatus includes transmitting elements arranged on a first circle and transmit an electromagnetic wave having OAM, a calibration transmitting element disposed at a center of the first circle and transmits a calibration electromagnetic wave without OAM, at least three calibration receiving elements disposed at regular intervals on a second circle, and a plurality of receiving elements disposed on the second circle or a third circle disposed with the second circle in a concentric fashion, wherein an angle of a central axis of the second circle is adjusted so that phases of the calibration electromagnetic wave received at all of the calibration receiving elements match with each other, and wherein an angle of a central axis of the first circle is adjusted so that phase differences of the electromagnetic wave having OAM received by the two adjacent calibration receiving elements among all of the calibration receiving elements are minimized. 1. An antenna apparatus comprising:a plurality of transmitting elements arranged on a circumference of a first circle in a manner that the transmitting elements transmit electromagnetic waves that form an electromagnetic wave having OAM (Orbital Angular Momentum);a calibration transmitting element disposed at a center of the first circle and configured to transmit a calibration electromagnetic wave without OAM;at least three calibration receiving elements disposed at regular intervals on a circumference of a second circle in a state where the calibration receiving elements face toward the transmitting elements and the calibration transmitting element; anda plurality of receiving elements disposed on the circumference of the second circle or a circumference of a third circle disposed with the second circle in a concentric fashion,wherein an angle of a central axis of the second circle is adjusted so that phases of the calibration electromagnetic wave received at all of the calibration receiving elements match with each ...

Rotatable Antenna Apparatus

A rotatable antenna apparatus has a fixed unit for attachment of the apparatus to an external structure, and a rotatable unit mounted on the fixed unit for rotation relative to the fixed unit. The rotatable unit comprises both an antenna assembly and processing circuitry coupled to the antenna assembly for performing signal processing operations. The apparatus further includes a thermally conductive shaft connected to the rotatable unit and located for rotation within the fixed unit, and a thermally conductive coupling structure to conduct heat from one or more heat generating components of the processing circuitry into the thermally conductive shaft. A heat sink within the fixed unit is thermally coupled to the thermally conductive shaft to draw heat away from the thermally conductive shaft. This provides an efficient mechanism for removing heat from the rotatable unit, whilst still allowing the rotatable unit to be sealed against external environmental conditions.

Antenna Apparatus and Method of Configuring a Transmission Beam for the Antenna Apparatus

An antenna apparatus operates as a base station in a wireless network, with a method configuring a transmission beam within such antenna apparatus. The antenna apparatus has a rotatable antenna assembly employing selected transmission beam patterns, and a controller to rotate the antenna assembly altering its azimuth direction. During configuration mode, a sweep operation rotates the antenna assembly to selected azimuth directions. Quality metric determination circuitry determines, for each selected azimuth direction, a link quality metric for wireless terminals based on communication between the wireless terminals and the base station whilst the rotatable antenna assembly is at that selected azimuth direction. Transmission beam determination circuitry determines, from the link quality metrics determined for the wireless terminals at each selected azimuth direction, both a transmission beam pattern and an azimuth direction for subsequent communication with the wireless terminals. The antenna apparatus efficiently self-configures its transmission beam pattern and azimuth direction. 1. Antenna apparatus for operating as a base station in a wireless network , comprising:a rotatable antenna assembly configured to employ a transmission beam pattern selected from a plurality of transmission beam patterns;a controller to rotate the rotatable antenna assembly in order to alter an azimuth direction of the rotatable antenna assembly;the controller being configured, during a configuration mode, to perform a sweep operation in order to rotate the rotatable antenna assembly to each of multiple selected azimuth directions;quality metric determination circuitry to determine, for each selected azimuth direction, a link quality metric for each of a plurality of wireless terminals based on communication between the plurality of wireless terminals and the base station whilst the rotatable antenna assembly is at that selected azimuth direction; andtransmission beam determination ...

SATELLITE SIGNAL ACQUISITION

A method and apparatus for performing satellite signal acquisition are described. In one embodiment, a method for using a satellite antenna comprises estimating antenna orientation when the antenna is in motion, including estimating yaw using one or more sensors; and performing signal acquisition to search for a satellite signal with the satellite antenna by interleaving a plurality of signal searches performed by the satellite antenna, the plurality of signal searches being based on an estimated yaw. 1. A method for using a satellite antenna , the method comprising:estimating antenna orientation when the antenna is in motion, including estimating yaw using one or more sensors; andperforming signal acquisition to search for a satellite signal with the satellite antenna by interleaving a plurality of signal searches performed by the satellite antenna, the plurality of signal searches being based on an estimated yaw.2. The method defined in wherein the plurality of signal searches comprises interleaved yaw searches that include a first yaw search in which a search of a first portion of a full 360° yaw search space within a first predetermined number of degrees of the estimated yaw orientation from the one or more sensors is performed and a second yaw search in which a search of a second portion of the full 360° yaw search space is performed claim 1 , the first and second portions being different.3. The method defined in wherein the interleaved yaw searches include:searching a first space in the first portion near the estimated yaw orientation from the one or more sensors;then searching the second portion of the full 360° yaw search if the satellite signal meeting predetermined criteria is not found when searching the first portion near the estimated yaw orientation; andthen searching a second space in the first portion if the satellite signal meeting the predetermined criteria is not found when searching the part of a full 360° yaw search.4. The method defined in ...

一种天线控制方法及装置

本发明公开了一种天线控制方法及装置，该方法应用于一通信定位装置，通信定位装置包含通信天线和转动装置，通信天线包含至少两根天线，转动装置能带动通信天线转动，该方法包括：获得并响应第一指令，获得通信天线与信标之间的角度信息；根据角度信息获得转动装置的对应转动参数，转动参数至少包括转动方向和转动角度；根据转动参数，控制转动装置带动通信天线按转动方向和转动角度转动，使通信天线的正面中垂线正对信标，或者，使信标落入通信天线正面的第一夹角范围，正面中垂线属于通信天线正面的第一夹角范围内。通过上述技术方案，解决了现有技术中UWB基于信号到达角度进行定位时某些范围测量精度偏低的技术问题，提高测量精度。

Device for two-dimensional imaging of scenes using microwaves

The device has a primary radiator (3) e.g. multi frequency feed horn radiator, and a rotation symmetric main reflector (1). Focusing parameters and moving speeds of drive units e.g. small motor (8) and eccentric disk (18), are adjusted, so that complete continuous microwave scanning of a scene is done by a focusing mark. A receiver-sided evaluation device is formed such that image data, which are synchronous in a position, are received and stored, combined to an image and represented or reprocessed on-line or off-line, based on determination of trajectory of the mark.

Mobile satellite system

The mobile satellite system is a vehicle that is adapted for use in satellite communications. The mobile satellite system is a trailer that is towed by a motorized vehicle. The mobile satellite system comprises a dish, a dish mount, a chassis, a suspension, a plurality of tracks, and a control system. The suspension attaches the plurality of tracks to the chassis. The dish mount attaches the dish to the chassis. The control system is mounted in the chassis. The dish is an antenna that is used to establish a communication link with a targeted satellite. The control system is an electronic device. The control system: 1) manages the targeting and positioning of the dish; and, 2) receives messages and other communications from a targeted satellite; and, optionally, 3) transmits messages and other communications to the targeted satellite.

Radiofrequency transmission device

La présente invention concerne un dispositif d'émission (10), comportant une source (12) de rayonnement électromagnétique, une antenne de type réseau (14) ayant un axe d'émission (T-T) et un conduit de guidage (16) du rayonnement électromagnétique de la source (12) à l'antenne (14). L'antenne (14) est rotative par rapport à la source de rayonnement (12) autour d'un axe (X-X), lequel axe (X-X) est décalé angulairement de l'axe d'émission (T-T) et le conduit de guidage (16) comporte un premier guide d'onde (22) s'étendant suivant l'axe (X-X) de rotation de l'antenne (14) et lié rigidement à l'antenne (14).

Antenna with single motor positioning and related methods

안테나는 베이스, 베이스에 결합되는 짐벌 마운트, 베이스에 결합되고 제1 가이드 본체를 갖는 제1 가이드 슬롯을 포함할 수 있다. 안테나는 베이스에 대해 회전 가능하게 결합되고 제1 가이드 슬롯에 대해 조종 가능한 교차 위치를 형성하는 제2 가이드 슬롯을 갖는 제2 가이드 본체를 포함할 수 있다. 안테나는 또한 짐벌 마운트에 결합되고 조종 가능한 교차 위치를 통해 연장되는 안테나 부재, 및 안테나 부재를 조종하도록 제2 가이드 본체를 선택적으로 회전시키도록 구성된 액추에이터를 가질 수 있다.

Array beam deflection system for controlling rotation of circularly polarized antenna by motor

本发明公开了一种电机控制圆极化天线旋转的阵列波束偏转系统，涉及波束控制领域，本发明提出了一种新的波束控制系统。本发明包括下位机PLC发送脉冲控制指令转换的电机信号至伺服电机，伺服电机配合机械传动装置执行电机信号控制圆极化天线阵模块的波束偏转；下位机PLC接收到的用于转换为脉冲控制指令的数字脉冲的阵列单元激励信号中的相位与圆极化天线阵模块输出的旋转角为数学映射关系。本发明相较于阵列天线领域具有低成本，低损耗的优势，为在阵列天线领域中实现波束偏转多出另一种技术可行性。未来有可能可广泛应用于有阵列天线领域。

Improved antenna system for tracking moving object mounted satellite and its operating method

A configurable antenna and method of operating such a configurable antenna

An antenna apparatus for use in a wireless network and method of operating such an antenna apparatus are provided. Moreover a wireless network controller to provide a configuration of such an antenna apparatus, a method of operating such a wireless network controller, and a resulting wireless network are also provided. The antenna apparatus comprises a directional antenna and a uniform circular antenna array. The directional antenna can be rotatably positioned about an axis with respect to a fixed mounting portion of the apparatus in dependence on wireless signals received by the uniform circular antenna array. The uniform circular antenna array allows the antenna apparatus to receive wireless signals isotropically and thus to accurately monitor the wireless signal environment in which it finds itself. The antenna apparatus can thus monitor and characterise incoming signals, both from external interference sources and from other network nodes, and the directional antenna can then be positioned in rotation to improve the network throughput.

Millimeter and sub-millimeter wave radar-radiometric imaging

An antenna is provided that is configured to implement a combined radar and radiometric imaging method. The antenna comprises: a bearing device on which is rigidly mounted: rotating waveguide adapter which provides the output for the antenna; an electromechanical drive, the output shaft of which is defined as the main axis of rotation for the antenna and a position sensor. The antenna further comprises an antenna rotor, the rotation of which is configured to be controlled by the output shaft of the electromechanical drive of the bearing device. The antenna rotor comprises: at least one 2D diffraction grating; planar dielectric waveguide connected over a diffraction field to the 2D diffraction grating; a linear waveguide turn; and a feed adapter.

Communication system

일 실시예에 따른 통신 시스템은 서로 직교하는 제1축, 제2축 및 제3축에 대해 회전하며 시계 내 이동하는 이동체와 전파 통신하는 추적부를 포함하는 통신 장치; 및 상기 추적부가 상기 이동체의 제1 궤도각 범위에서 상기 제1축 및 상기 제2축에 대해 회전하고 상기 이동체의 제2 궤도각 범위에서 상기 제2축 및 상기 제3축에 대해 회전하도록 상기 통신 장치를 제어하는 컨트롤러를 포함한다.

Device for receiving satellite broadcast and a receiving method therefor

A satellite broadcast receiver comprises an antenna, a tuner, a modulator, a FEC decoder, a microprocessor, and an antenna driver. The antenna receives the satellite signal and the tuner tunes the satellite signal received by the antenna, and the modulator modulates the satellite signal tuned by the tuner into digital signal, the FEC decoder corrects a position error of the satellite antenna using the signal modulated by the modulator, and outputs a corresponding output signal, and the microprocessor receives the signal modulated by the modulator and the output signal of the error corrector, and outputs a control signal which controls the position of the antenna, and the antenna driver drives the antenna in accordance with the control signal of the microprocessor. The satellite broadcast receiver enables a user to detect satellites fast and see satellite broadcast conveniently.

The packing material surface topology scanned using uniform line is determined

用于确定填充材料表面(101)的拓扑的填充物位测量装置(100)包括天线设备(102)和可旋转支座，天线设备包括辐射元件(202)的阵列，可旋转支座用于使天线装置围绕平行于阵列的轴线(131)旋转。以这种方式，可相对于填充材料表面电子地且机械地调节天线设备的多个发射角，而不会出现局部过扫描。

Method for complete and purely passive radiation scanning of a larger area of the earth's surface by an aircraft or spacecraft and antenna arrangement for carrying out this method

Node role assignment in network

提供了一种供在网络中使用的节点，节点包括：用以与管理服务器通信的通信电路。自举电路初始响应于通信电路不能直接地与管理服务器通信而从网络中的至少一个可用节点标识中间节点。通信电路被布置成在不能直接地与管理服务器通信时经由中间节点间接地与管理服务器通信。角色指派电路基于通信电路直接地还是经由中间节点间接地与管理服务器通信来指派网络中的节点要执行的角色。

Reflective array surface and reflective array antenna

The present invention provides a reflective array surface. The reflective array surface includes a functional board that is configured to perform beam modulation on an incident electromagnetic wave and a reflection layer that is disposed on one side of the functional board and is configured to reflect an electromagnetic wave, where the functional board includes two or more functional board units and the reflection layer includes reflection units, where the number of reflection units corresponds to the number of functional board units, where the functional board unit and a reflection unit corresponding to the functional board constitute a phase-shifting unit that is used for phase shifting. According to the reflective array surface in the present invention, a functional board unit and a reflection unit corresponding to the functional board unit constitute a phase-shifting unit that is used for phase shifting, which can solve a problem in the prior art that a phase-shifting effect is not exquisite enough and a beam modulation capability for an electromagnetic wave is poor, thereby affecting bandwidth and working performance of a reflective array antenna. In addition, the present invention further provides a reflective array antenna.

Coincident transmit-receive beams plus conical scanned monopulse receive beam

An antenna system includes a feedhorn, main reflector, sub-reflector, and frequency selective member. The sub-reflector includes an axially symmetrical reflecting surface. The frequency selective member includes an axially non-symmetrical reflecting surface. The frequency selective member transmits signals having a first frequency from the feedhorn to the sub-reflector. These signals are symmetrically reflected by the sub-reflector to the main reflector. The frequency selective member reflects signals having a second frequency from the main reflector to the feedhorn. These signals are reflected at a small conical angle by the frequency selective member to the feedhorn. In this way, the present transmit/receive system provides coincident transmit and receive signals with only conically scanned receive signals.

Tracking method

A method for tracking a moving platform (MP) wherein the MP uses an on-board navigation system (NS). Data provided by the navigation system on board the moving platform (MP) is merged with data obtained using a tracking system that tracks the MP from another location. A typical navigation system on board the moving platforms is an inertial navigation system (INS). State data of one or more MP is sent to a processing facility and state data of one or more electromagnetic tracking (EMT) is collected by one or more processing facility. The collected states data from the sources are processed, using the one or more processing facilities for calculating tracking data are used to direct one or more antennas for MP tracking. The state data from one or more MP's are sent using a communications channel.

Communication system

A communication system according to one embodiment comprises: a communication device including a tracking unit which rotates with respect to a first axis, a second axis, and a third axis that are orthogonal to each other and which performs radio-wave communication with a moving object moving within the field of view; and a controller for controlling the communication device so that the tracking unit rotates with respect to the first axis and the second axis in the range of a first trajectory angle of the moving body and rotates with respect to the second axis and the third axis in the range of a second trajectory angle of the moving object.

Antenna device and method for performing spatial nulling within the antenna device

提供用于用作无线网络中的基站的天线设备，以及另外提供一种用于在这样的天线设备内执行空间趋零的方法。该天线设备具有采用选自多个接收射束图样的接收射束图样的天线组件。在趋零测试操作期间，接收射束图样控制器被布置成促使天线组件采用所述多个接收射束图样中的每一个。质量度量确定电路然后针对在所述趋零测试操作期间采用的每个接收射束图样基于在天线组件正采用该接收射束图样的同时多个无线终端和基站之间的通信来为那些无线终端中的每一个确定链路质量度量。接收射束确定电路然后被布置用来，根据各种链路质量度量，来从多个接收射束图样中确定要被用于与该多个无线终端的后续通信的接收射束图样。通过这样的方法，有可能改变接收射束图样以便在仍试图关于正与基站通信的各个无线终端中的每一个保持适当的链路质量级别的同时试图降低干扰源的影响。

Satellite antenna azimuth angle adjusting device

本发明公开了一种卫星天线方位角调整装置，包括有把手单元、连接单元、一级调整单元、二级调整单元、锁紧单元和底座单元，其中把手单元由上至下穿过连接单元并与其固定；连接单元由上至下穿过一级调整单元并固定在二级调整单元上；底座单元由下至上依次穿过二级调整单元、一级调整单元、连接单元并与把手单元连接；锁紧单元在水平方向上与二级调整单元连接。一级调整单元可对卫星天线方位角进行大幅度调整，二级调整单元可对卫星天线方位角进行微调。该装置操作方便，结构简单，对比现有技术提高了操作速度与调节精度。

Satellite antenna tracking system

The method of configurable antenna and the such configurable antenna of operation

提供了一种天线设备和一种操作该天线设备的方法。该天线设备包括：包括多个天线阵列部件的定向天线，连接至多个天线阵列部件的多个RF链，以及连接至多个RF链的收发器。每个RF链依次包括：具有选择性地连接天线阵列部件的切换电路的切换级，具有相移电路的相移级，以及具有求和电路的求和级，其中该RF链中的至少两个共享相移电路且该RF链中的至少两个共享求和电路。RF链的至少部分共享（特别地相移电路的至少部分共享）提供了一种紧凑且便宜的天线设备，但是其在方向和射束图样上具有一定程度的可配置能力以使得它能够在繁忙且变化的环境中操作。

Weather radar and weather observation method

A weather radar includes an antenna unit configured to transmit a radio wave from a plurality of antenna elements, and receive a reflected wave from a weather target by carrying out beam scanning in an elevation angle direction by phase control, a drive unit configured to control an elevation angle of an aperture of the antenna unit, and a controller configured to cause the antenna unit to carry out the beam scanning in a state where the aperture is faced to a point which presents a maximum range in the observational range by the drive unit, and direct, at a time point when the weather target is detected based on a received signal of the reflected wave, the aperture toward the weather target by the drive unit.

Low-profile indoor coverage enhanced single-polarization omnidirectional ceiling antenna

本发明提供了一种低剖面室内覆盖增强型单极化全向吸顶天线，该天线包括地板、辐射体和圆环辐射组件；地板为以其中心线为轴线的回转体；辐射体设置在地板的上，起包括依次相接的两个直径不同的空心的圆柱和圆台，辐射体的直径朝地板方向逐渐减小，圆柱和圆台的中心线重合，两个圆柱的相接处、圆柱和圆台的相接处以及两个圆台的相接处均由于直径突变而形成台阶部；圆环辐射组件设置在辐射体的顶部，圆环辐射组件的最大直径与辐射体顶部的圆柱的直径相等，以使天线内最大辐射方向靠近水平方向，从而增强低仰角增益；地板、辐射体和圆环辐射组件的中心线重合。本发明实现了天线的低剖面和小型化，并增强低仰角增益。

NODELESS CELL RADOME ASSEMBLY

In einem Beispiel der vorliegenden Offenbarung wird eine Radom-Baugruppe zur Verwendung mit einer Antennenbaugruppe beschrieben. Die Radom-Baugruppe kann einen Radomkörperteil mit einer ersten Oberfläche und einer zweiten Oberfläche umfassen, wobei die zweite Oberfläche der ersten Oberfläche gegenüberliegt, und wobei der Radomkörperteil einen Teil eines Gehäuses für eine Antennenbaugruppe definiert. Die Radom-Baugruppe kann ferner einen Radom-Abstandshalterteil umfassen, der sich von der zweiten Oberfläche des Radomkörperteils erstreckt, wobei der Radom-Abstandshalterteil eine Vielzahl von Zellen definiert, die aus einer Vielzahl von Zellwänden gebildet sind, wobei mindestens zwei Zellwände der Vielzahl von Zellwänden, die jede Zelle der Vielzahl von Zellen definieren, voneinander beabstandet sind. In an example of the present disclosure, a radome assembly for use with an antenna assembly is described. The radome assembly may include a radome body portion having a first surface and a second surface, the second surface opposite the first surface, and the radome body portion defining a portion of a housing for an antenna assembly. The radome assembly may further include a radome spacer portion extending from the second surface of the radome body portion, the radome spacer portion defining a plurality of cells formed from a plurality of cell walls, with at least two cell walls of the plurality of cell walls , which define each cell of the plurality of cells, are spaced from each other.

Node role assingment in networks

Method of tracking steerable antennas on platforms to form an rf communication link

Steerable antenna on platforms, fixed or mobile, are tracked to form an RF communication link by setting the width of the main lobe of the antenna beam pattern to be greater than the initial pointing uncertainty region and then concurrently scanning and progressively reducing the widths of the main lobes as the pointing uncertainty region is reduced to first acquire and then track the opposing antenna. The width of the main lobe is reduced such that the width of the main lobe is approximately fixed for each block. The antennas at opposite ends of the communication link may be scanned with scan patterns that are orthogonal to each other such that the demodulation of the received signal levels to signal direction of arrival at each platform is solely a function of the scan pattern of the receive antenna.

Dienstgüte in einem drahtlosen Backhaul

Feederterminal (120) mit:einem Backhaul-Kommunikationsschaltkreis (170) zum Verbinden mit einem Kommunikationsnetzwerk (150) über einen drahtlosen Backhaul (140) und zum Bereitstellen einer Zugangsbasisstation (110) mit Zugang zu dem drahtlosen Backhaul (140);einem Backhaul-Informationsschaltkreis (180) zum Bestimmen von Überlastinformation betreffend den drahtlosen Backhaul (140); undeinem Kommunikationsschaltkreis (190) zum Ermöglichen von Kommunikation mit einer Zugangsbasisstation (110) und zum Bereitstellen von Überlastinformation an die Zugangsbasisstation (110), wobeials Reaktion auf eine Bedarfsanfrage von der Zugangsbasisstation (110), die Dienstgüteanforderungen enthält, der Kommunikationsschaltkreis (190) die Bedarfsnachricht an das Kommunikationsnetzwerk weiterleitet.

可旋转天线设备

提供了一种可旋转天线设备，所述可旋转天线设备具有用于将设备附接到外部结构的固定单元以及安装在固定单元上以用于相对于固定单元旋转的可旋转单元。可旋转单元包括天线组件和处理电路系统两者，处理电路系统联接到天线组件以用于执行信号处理操作。设备还包括联接到可旋转单元且定位成以便在固定单元内旋转的热传导轴，以及将热量从处理电路系统的一个或多个热量生成部件传导到热传导轴中的热传导联接结构。然后，散热器被设置在固定单元内并热耦合到热传导轴以将热量引导离开热传导轴。这提供了用于从可旋转单元移除热量同时仍允许可旋转单元相对外部环境条件密封的高效的机构。

A rotatable antenna apparatus

A rotatable antenna apparatus is provided that has a fixed unit for attachment of the apparatus to an external structure, and a rotatable unit mounted on the fixed unit for rotation relative to the fixed unit. The rotatable unit comprises both an antenna assembly and processing circuitry coupled to the antenna assembly for performing signal processing operations. The apparatus further includes a thermally conductive shaft connected to the rotatable unit and located for rotation within the fixed unit, and a thermally conductive coupling structure to conduct heat from one or more heat generating components of the processing circuitry into the thermally conductive shaft. A heat sink is then provided within the fixed unit, and is thermally coupled to the thermally conductive shaft to draw heat away from the thermally conductive shaft. This provides an efficient mechanism for removing heat from the rotatable unit, whilst still allowing the rotatable unit to be sealed against external environmental conditions.

A rotatable antenna apparatus

Topologiebestimmung einer füllgutoberfläche mit gleichmässiger zeilenabtastung

Procédé et dispositif d'estimation du dépointage d'une antenne et procédé et dispositif de poursuite du pointage d'une antenne mettant en oeuvre de tels procédé et dispositif, fondés sur une analyse harmonique

L'invention concerne la mesure calibrée du dépointage angulaire x d'une antenne radiofréquence pointant vers un mobile lent (S), émetteur radio selon un axe d'antenne (1a), l'antenne étant en communication radio avec le mobile (S).

Method and device for estimating the squint of an antenna and method and device for following the pointing of an antenna implementing such a method and device, based on a harmonic analysis

用于估计天线的偏斜及用于跟踪天线的指向的方法和设备

本发明涉及对沿着天线轴(1a)指向缓慢移动对象(S)、无线电发射器的射频天线的角度偏斜x进行校准测量，天线与移动对象(S)进行无线电通信。

고조파 분석에 기초하여, 안테나의 편이를 추정하기 위한 방법 및 장치와 그러한 방법 및 장치를 구현하는 안테나의 포인팅을 따르는 방법 및 장치

본 발명은 느린 모바일(S)를 향해 포인팅하는 무선 주파수 안테나의 각도상 오정렬(x)의 교정된 측정, 안테나 축(1a)를 따른 무선 송신기, 상기 모바일(S)과 무선 통신하는 안테나에 관한 것이다.

可旋转天线设备

提供了一种可旋转天线设备，所述可旋转天线设备既具有用于将设备附接到外部结构的固定单元又具有安装在固定单元上的可旋转单元，并且所述可旋转单元包括天线组件和联接到天线组件以用于执行信号处理操作的处理电路系统。接口单元联接到固定单元和可旋转单元两者，并用于按路线引导缆线以提供从固定单元到处理电路系统的有线连接。接口单元包括缆线壳体，缆线的一段以盘绕布置结构被包封在缆线壳体内。然后，联接到接口单元的控制机构布置成限制缆线的一段在缆线壳体内缠绕及解绕所达的量，从而在可旋转单元的旋转期间阻止将拉伸应力施加在缆线上。这提供了非常高效且有成本效益的机构以用于提供与被包括在可旋转单元内的处理电路系统的有线连接。

Wireless network controller and method of controlling a wireless network

An antenna apparatus for use in a wireless network and method of operating such an antenna apparatus are provided. A wireless network controller provides a configuration of such an antenna apparatus, a method of operating such a wireless network controller, and a resulting wireless network. The antenna apparatus comprises a directional antenna and a uniform circular antenna array. The directional antenna can be rotatably positioned about an axis with respect to a fixed mounting portion of the apparatus in dependence on wireless signals received by the antenna array. The antenna array allows the antenna apparatus to receive wireless signals isotropically and thus to accurately monitor the wireless signal environment in which it finds itself. The antenna apparatus can thus monitor and characterise incoming signals, both from external interference sources and from other network nodes, and the directional antenna can then be positioned in rotation to improve the network throughput.

Method of tracking steerable antennas on platforms to form an rf communication link

Steerable antenna on platforms, fixed or mobile, are tracked to form an RF communication link by setting the width of the main lobe of the antenna beam pattern to be greater than the initial pointing uncertainty region and then concurrently scanning and progressively reducing the widths of the main lobes as the pointing uncertainty region is reduced to first acquire and then track the opposing antenna. The width of the main lobe is reduced such that the width of the main lobe is approximately fixed for each block. The antennas at opposite ends of the communication link may be scanned with scan patterns that are orthogonal to each other such that the demodulation of the received signal levels to signal direction of arrival at each platform is solely a function of the scan pattern of the receive antenna.

Método de seguimiento de antenas direccionables en plataformas para formar un enlace de comunicación de RF

Un método para apuntar y hacer seguimiento de antenas transceptoras de radiofrecuencia, RF, en plataformas para formar un enlace de comunicación de RF, en donde una primera plataforma tiene una antena transceptora de RF direccionable, dicha antena transceptora configurada para trasmitir y recibir con un patrón de haz que tiene un lóbulo principal y lóbulos laterales, dicha antena transceptora pudiéndose configurar para variar el ancho del lóbulo principal y una segunda plataforma que tiene una antena transceptora de RF direccionable para trasmitir y recibir con un patrón de haz que tiene un lóbulo principal y lóbulos laterales, dicha antena transceptora pudiéndose configurar para variar el ancho del lóbulo principal, el método comprendiendo: a. en cada plataforma, a partir de las coordenadas de tanto la primera como la segunda plataformas y la orientación de esa plataforma, determinar una dirección de apuntado de la antena transceptora de RF hacia la antena transceptora de RF opuesta y una región de incertidumbre de apuntado. b. en cada plataforma y concurrentemente, establecer (36) el ancho del lóbulo principal más grande que la región de incertidumbre de apuntado y escanear el patrón del haz sobre un patrón de escaneo para trasmitir una señal de RF y recibir una señal de RF del transceptor de RF en la otra plataforma dentro del lóbulo principal, adquirir un bloque de niveles de señales recibidas para un ancho aproximadamente fijo del lóbulo principal, y procesar una modulación de los niveles de señales recibidas para actualizar la dirección de apuntado y reducir la región de incertidumbre de apuntado de la antena transceptora de RF para hacer un seguimiento de la antena transceptora de RF opuesta, en donde los patrones de escaneo de las antenas transceptoras de RF opuestas son sustancialmente ortogonales entre sí para por lo menos un componente primario del patrón de escaneo de tal manera que la demodulación de los niveles de señales recibidas para la dirección de ...

Communication system

Multi-beam reflector antenna for satellite applications

Disclosed herein is a feed array (3,44,45,54,55,113,202) for reflector antennas (4,5,100,200). In particular, said feed array (3,44,45,54,55,113,202) is designed to be installed in a reflector antenna (4,5,100,200) provided with a single or dual reflector optics and includes: a radiating array (30) arranged in a focal region of the single/dual reflector optics and operable to transmit and receive radiofrequency signals; digital beam forming means (32,33); reception conversion means (34) connected between the radiating array (30) and the digital beam forming means (32) and designed to apply a frequency down-conversion and an analog-to-digital conversion to incoming radiofrequency signals received by the radiating array (30) thereby obtaining incoming digital signals, and provide the digital beam forming means (32) with the incoming digital signals; and transmission conversion means (35) connected between the radiating array (30) and the digital beam forming means (33) and designed to apply a digital-to-analog conversion and a frequency up-conversion to outgoing digital signals generated by the digital beam forming means (33) thereby obtaining outgoing radiofrequency signals, and provide the radiating array (30) with the outgoing radiofrequency signals to be transmitted by said radiating array (30). The digital beam forming means (32,33) are configured to: process the incoming digital signals by using a reception matrix defined based on a first matrix for beam pointing in reception and a second matrix for compensating for errors in reception due to the single/dual reflector optics; and generate the outgoing digital signals by using a transmission matrix defined based on a third matrix for beam pointing in transmission and a fourth matrix related to errors in transmission due to the single/dual reflector optics. Said second and the fourth matrices are computed based on electric field values measured by the radiating array (30) in the focal region.

用于检测基于卫星的通信干扰的系统和方法

用于检测基于卫星的通信干扰的系统和方法。用于检测和减少影响与移动车辆的无线通信的信号干扰的系统和方法包括：基于在附接到所述移动车辆的天线组件处接收到的期望目标信号的相关性多个信号质量特性，生成干扰特征；以及基于所述干扰特征的变化或劣化来调整所述天线组件的所述取向，从而改进与所述车辆的无线通信。

Sistema integrato sensore-attuatore per il controllo del puntamento di antenne a bordo di satelliti artificiali.

Antena reflectora multihaz para aplicaciones por satélite

En el presente documento se describe una matriz de alimentación (3, 44, 45, 54, 55, 113, 202) para antenas reflectoras (4, 5, 100, 200). En particular, dicho conjunto de alimentación (3, 44, 45, 54, 55, 113, 202) está diseñado para instalarse en una antena reflectora (4, 5, 100, 200) provista de una óptica de reflector simple o doble e incluye: un conjunto radiante (30) dispuesto en una región focal de la óptica del reflector simple/doble y operable para transmitir y recibir señales de radiofrecuencia; medios digitales de formación de haz (32, 33); medios de conversión de recepción (34) conectados entre el conjunto radiante (30) y los medios de formación de haz digital (32) y diseñados para aplicar una conversión descendente de frecuencia y una conversión de analógico a digital a las señales de radiofrecuencia entrantes recibidas por el conjunto radiante (30) obtener de ese modo señales digitales entrantes, y proporcionar a los medios (32) formadores de haces digitales las señales digitales entrantes; y medios de conversión de transmisión (35) conectados entre el conjunto radiante (30) y los medios de formación de haz digital (33) y diseñados para aplicar una conversión digital a analógica y una conversión ascendente de frecuencia a las señales digitales salientes generadas por el haz digital. medios de formación (33) obteniendo así señales de radiofrecuencia salientes, y proporcionan a la matriz radiante (30) las señales de radiofrecuencia salientes para ser transmitidas por dicha matriz radiante (30). Los medios de formación de haz digital (32, 33) están configurados para: procesar las señales digitales entrantes utilizando una matriz de recepción definida en base a una primera matriz para apuntar el haz en recepción y una segunda matriz para compensar los errores en la recepción debido a la simple/ óptica de doble reflector; y generar las señales digitales salientes utilizando una matriz de transmisión definida en base a una tercera matriz para apuntar el haz en ...

Dielectric spacer for antenna assembly

In one example of the present disclosure a dielectric layer for use in an antenna assembly is described. The dielectric layer may comprise a planar body formed using a dielectric material. The dielectric layer may further comprise a plurality of openings defined in the planar body and surrounding a plurality of portions of the dielectric material, each of the plurality of portions of the dielectric material being configured to be aligned with an antenna element of a plurality of antenna elements of the antenna assembly.

Scanning device

Rotating multi-beam antenna

Apparatus and associated methods relate to using a plurality of antennas (18A-18G) radially distributed about a rotatable turret (20') to sequentially scan a field of view. Each of the plurality of antennas directs an electromagnetic beam and senses its reflection along a principal direction defined by a roll position of the rotatable turret and an azimuthal beam angle. The principal directions of the antennas have a unique azimuthal beam angle relative to a boresight, i.e. axis of rotation. As the turret rotates, each of these antennas is sequentially turned on at a first roll position and off at a second roll position. This enables electromagnetic beams generated by the antennas to pan a scene both in azimuth and roll. An image processor (52) then determines, based on the reflected signals received by the plurality of antennas, directions to and/or velocities of objects within the scanned field of view.

Rotating multi-beam antenna

Apparatus and associated methods relate to using a plurality of antennas radially distributed about a rotatable turret to sequentially scan a field of view. Each of the plurality of antennas directs an electromagnetic beam and senses its reflection along a principal direction defined by a roll position of the rotatable turret and an azimuthal beam angle. The principal directions of the antennas have a unique azimuthal beam angle relative to a boresight ( i.e., axis of rotation). As the turret rotates, each of these antennas is sequentially turned on at a first roll position and off at a second roll position. This enables electromagnetic beams generated by the antennas to pan a scene both in azimuth and roll. An image processor then determines, based on the reflected signals received by the plurality of antennas, directions to and/or velocities of objects within the scanned field of view.

Rotating multi-beam antenna

Apparatus and associated methods relate to using a plurality of antennas radially distributed about a rotatable turret to sequentially scan a field of view. Each of the plurality of antennas directs an electromagnetic beam and senses its reflection along a principal direction defined by a roll position of the rotatable turret and an azimuthal beam angle. The principal directions of the antennas have a unique azimuthal beam angle relative to a boresight ( i.e., axis of rotation). As the turret rotates, each of these antennas is sequentially turned on at a first roll position and off at a second roll position. This enables electromagnetic beams generated by the antennas to pan a scene both in azimuth and roll. An image processor then determines, based on the reflected signals received by the plurality of antennas, directions to and/or velocities of objects within the scanned field of view.

Antenna arrangement

Antenna arrangement

An antenna arrangement (10) of the kind, which includes a reflector (11), preferably provided on supporting means (12, 13, 14, 15), a central unit (22) comprising means (31) for guiding collected electromagnetic waves by said reflector (11) and guiding said waves to receiving means (34, 35). Said antenna (10) further includes: at least one dielectric element (29), having property to vary the rotation of said electromagnetic waves, and/or means to radially displace said receiving means (34, 35) relative said wave guiding means (31), and/or a sleeve (40), a socket (42) arranged rotatably in relation to said sleeve (40) and a dielectric element (44) provided inside said socket (42). The invention also includes methods of improving conical scanning, polarisation rotation and circular/linear commutation polarisation in said antenna.

Determining a correction to be applied to a main beam of an antenna system for a moving vehicle

An antenna system for a moving vehicle, the antenna system comprising: a main antenna to generate a main beam; a measurement antenna to generate a measurement beam; and control circuitry to perform an adjustment process by: rotating the main beam to an initial bearing angle; rotating the measurement beam independently of the main beam to receive signals at positions to either side of the initial bearing angle; comparing at least one metric measured for the signals received by the measurement antenna at the positions to either side of the initial bearing angle to generate a comparison output; and determining, based on the comparison output, a correction to be applied to the initial bearing angle of the main beam.