ЭЛЕКТРОМАГНИТНЫЙ ПОГЛОЩАЮЩИЙ МАТЕРИАЛ, СПОСОБ ИЗГОТОВЛЕНИЯ ЕГО И ЭКРАНИРУЮЩИХ УСТРОЙСТВ

Изобретение относится к средствам поглощения электромагнитной энергии. Технический результат заключается в эффективном уменьшении электромагнитного излучения в широком частотном диапазоне. Сущность изобретения заключается в совмещении в одном материале экранирующих свойств с теплоизолирующими свойствами пористого материала при оптимальном соотношении между его плотностью и прочностью. 5 с. и 16 з.п.ф-лы, 2 ил., 4 табл.

Радиопоглощающий материал

Изобретение относится к материалам для поглощения электромагнитного излучения и может быть использовано для обеспечения электромагнитной совместимости радиоэлектронных устройств, защиты биологических объектов от электромагнитного излучения, а также для снижения радиозаметности объектов военного и гражданского назначения. Материал содержит основу из нетканого текстильного материала и нанесенное на его поверхность при помощи вакуумного распыления радиопоглощающее покрытие. В качестве радиопоглощающего покрытия использованы металлы - железо, никель, хром, кобальт, медь, серебро, титан, цинк, алюминий, вольфрам, молибден, ванадий, цирконий, олово, индий, свинец и золото, их сплавы или их соединения с азотом, или кислородом, или углеродом. Технический результат заключается в улучшении радиопоглощающих свойств в широком диапазоне частот и упрощении изготовления материала. 1 табл.

РАДИОПОГЛОЩАЮЩЕЕ ПОКРЫТИЕ НА ОСНОВЕ ДИФРАКЦИОННОЙ РЕШЕТКИ

Изобретение относится к радиотехнике, а более конкретно к материалам для поглощения электромагнитных волн, и может найти применение для повышения скрытности и уменьшения вероятности обнаружения радиолокаторами объектов морской, наземной, авиационной и космической техники, а также обеспечения электромагнитной совместимости радиоэлектронных и радиотехнических приборов и устройств. Покрытие на основе дифракционной решетки выполнено из электропроводящего или диэлектрического материала, содержащее радиопоглощающие элементы. Покрытие включает группы, содержащие каждая не менее четырех прорезей, каждая прорезь в группе выполнена параллельно друг другу, каждая группа по отношению к другой группе выполнена перпендикулярно. Прорези имеют расстояние между соседними элементами от одной шестнадцатой до одной четверти длины падающей электромагнитной волны. Внутри прорези расположены не менее четырех не связанных между собой слоев арамидной ткани с нанесенной магнетронным распылением пленкой из гидрогенизированного ...

ИЗОЛИРУЮЩЕЕ УСТРОЙСТВО

... 1. Изолирующее устройство, состоящее из корпуса, содержащего внешнюю формообразующую оболочку и внутреннюю изолирующую оболочку, выполненную с возможностью размещения внутри нее изолируемого изделия, отличающееся тем, что внутренняя изолирующая оболочка выполнена из изолирующего материала, состоящего из слоев нетканого волокнистого карбонизированного полиакрилонитрила, которые пропитаны суспензией, содержащей углеродные нанопористые микроволокна диаметром 5-10 мкм с длиной волокон 10-500 мкм и диаметром перпендикулярных оси микроволокон пор в диапазоне от 2 до 200 нм с концентрацией от 1% масс до 30% масс и многослойные углеродные наночастицы фуллероидного типа тороподобной формы с соотношением радиусов тора и радиусов образующих тор труб в диапазоне от 3:1 до 10:1 с концентрацией от 0,5% масс до 20% масс, причем слои нетканого волокнистого полиакрилонитрила карбонизированы до концентрации углерода от 1% масс до 99,999% масс с возрастанием от поверхностных к центральному слою.2. Устройство ...

КОНТАКТОР ВАКУУМНЫЙ ЭЛЕКТРОМАГНИТНЫЙ

Полезная модель относится к области электротехники, в частности к электрическим коммутационным аппаратам, которые используются для коммутации токов включения и отключения асинхронных электродвигателей и других приемников электроэнергии. Технический результат заключается в стабилизации параметров работы контактора за счет снижения вероятности намагничивания металлической части корпуса. Контактор вакуумный электромагнитный содержит дугогасительные вакуумные камеры и контактную систему, корпус состоит из двух половин, одна из которых выполнена из металла и на ней крепится система катушек. Крепление системы катушек осуществляют таким образом, что между пластиной, на которую крепятся катушки и которая крепится к металлической части корпуса, установлены прокладки из материала на основе токонепроводящего неупругого материала. 1 з.п. ф-лы.

СПОСОБ ИЗГОТОВЛЕНИЯ СВЧ-ПОГЛОТИТЕЛЕЙ

Изобретение относится к области электронной техники и служит для изготовления СВЧ-поглотителей спиральных ЛБВ с улучшенными эксплуатационными характеристиками. Техническим результатом изобретения является получение СВЧ-поглотителей с переменным сопротивлением по длине, причем изменение сопротивления по длине керамического стержня может происходить от линейного закона до экспоненциального. Технический результат достигается тем, что способ изготовления СВЧ-поглотителей, включающий нанесение пиролитической пленки углерода из смеси углеводородосодержащих газов на керамические заготовки, закрепленные во вращающейся оснастке внутри реактора, с использованием накладок, отличается тем, что нанесение пленки проводят за несколько циклов, в первом цикле на заготовках размещают накладки самого большого размера, во втором и последующих циклах уменьшают каждый раз размеры накладок, последний цикл нанесения пленки проводят без накладок; при этом содержание углеводородов в рабочей смеси газов составляет ...

Широкополосный поглотитель электромагнитного излучения

Полезная модель относится к области радиотехники, в частности к поглотителям электромагнитного излучения, и может быть использована в качестве основного и/или вспомогательного средства для оснащения безэховых камер и экранированных помещений, обеспечивающих проведение радиотехнических измерений и испытаний технических средств на соответствие требованиям электромагнитной совместимости. Техническим результатом предложенной полезной модели является создание широкополосного поглотителя электромагнитного излучения с упрощенной конструкцией и расширенным в сторону СВЧ частотным диапазоном. Технический результат, согласно предложенному решению, достигается благодаря тому, что широкополосный поглотитель электромагнитного излучения представляет собой диэлектрические цельные однородные панели, лицевая поверхность которых образована массивом клинообразных поглотительных элементов в форме правильной четырехгранной пирамиды, размещенных на общем цокольном основании в форме прямоугольного параллелепипеда ...

РАДИОПОГЛОЩАЮЩЕЕ ПОКРЫТИЕ

Радиопоглощающее покрытие, состоящее из слоев наноструктурированных пленок на гибких подложках, отличающееся тем, что представляет собой градиентную структуру, включающую от 2 до 10 слоев наноструктурированных пленок аморфного гидрогенизированного углерода с наночастицами 3d-металла (a-C:H(Ni)), одним из слоев которой является частотно-селективная структура (ЧСС), состоящая из пленки аморфного гидрогенизированного углерода с наночастицами 3d-металла (а-C:H(Ni)), нанесенной в форме квадратов размером 10-50 мм с расстоянием между квадратами 10-50 мм на гибкую подложку.

Самоклеящийся радиопоглощающий материал

Изобретение относится к области радиопоглощающих материалов и покрытий и может быть использовано в качестве покрытий, поглощающих электромагнитные волны в сверхвысокочастотном (СВЧ) диапазоне. Cамоклеящийся радиопоглощающий материал состоит из связующего и функционального наполнителя. В качестве связующего используют неотверждаемый герметик «Абрис» на основе этиленпропиленового каучука, а в качестве функционального наполнителя – смесь углеродного волокна UFM-4HD и металлической окалины. Изобретение позволяет повысить радиопоглощающие свойства материала, эластичность, уменьшить его толщину, снизить трудоемкость при монтаже, так как материал является самоклеящимся. 2 табл.

СПОСОБ ИЗГОТОВЛЕНИЯ РАДИОПОГЛОЩАЮЩЕГО ЭЛЕМЕНТА

Настоящее изобретение относится к способу изготовления радиопоглощающего элемента, который может быть использован при оснащении безэховых камер и экранированных помещений. Способ включает помещение вкладыша, образующего внешний слой радиопоглощающего элемента, в металлическую форму, приготовление смеси полиэфира с терморасширенным графитом и полиизоцианата с углеродным волокном, перемешивание упомянутых смесей для получения реакционной смеси, заполнение формы с вкладышем полученной реакционной смесью, далее герметично закрывают металлическую форму, по истечении времени, необходимого для образования радиопоглощающего материала, открывают металлическую форму, извлекают из нее вкладыш с радиопоглощающим материалом и окрашивают поверхность радиопоглощающего элемента краской с обеспечением величины диэлектрической проницаемости внешнего слоя от 1,01 до 1,1 в рабочем диапазоне частот. Изобретение обеспечивает возможность создания радиопоглощающего элемента с улучшенными радиотехническими и прочностными ...

ШИРОКОПОЛОСНОЕ РАДИОПОГЛОЩАЮЩЕЕ КОМПОЗИТНОЕ ПОКРЫТИЕ

Изобретение относит к широкополосным радиопоглощающим композитным покрытиям и может быть использовано для изготовления материалов, применяемых для поглощения электромагнитных волн в объектах наземной, авиационной, космической и морской техники для снижения их радиолокационной заметности, а также для поглощения электромагнитного излучения в экранирующих устройствах, в поглощающих облицовках и корпусах, в безэховых измерительных камерах и в средствах защиты населения от неионизирующих излучений. Широкополостное радиопоглощающее композитное покрытие содержит радиопрозрачное связующее и наполнитель, наполнитель выполнен из наночастиц алюминия или его сплавов, причем содержание наполнителя в широкополосном радиопоглощающем композитном покрытии составляет 30-60 об.%, остальное - радиопрозрачное связующее, а диаметр наночастиц равен толщине скин-слоя в алюминии или алюминиевом сплаве на максимальной поглощаемой частоте, при этом энергия фотонов максимальной поглощаемой частоты не превышает полуширины ...

КОМПОЗИТНОЕ РАДИОПОГЛОЩАЮЩЕЕ ПОКРЫТИЕ

Изобретение относится к маскировочным радиопоглощающим покрытиям, снижающим заметность объектов техники, а более конкретно к устройствам для поглощения излучаемых электромагнитных волн, выполненных из композитных пористых материалов на основе вспененных высокомолекулярных соединений, содержащих распределенные электропроводящие элементы.Композитное радиопоглощающее покрытие содержит основу из пенополиуретана, в объеме которого распределены функциональные электропроводящие частицы.Новым является то, что функциональные частицы выполнены в виде фрагментов микропровода длиной 0,3-3,0 мм и диаметром 3-40 мкм из аморфного кобальта, помещенного внутри стеклянной оболочки.Предложенное техническое решение обеспечило расширение функциональных возможностей маскирующего покрытия высококонтрастных объектов за счет кратного повышения магнитных свойств покрытия.

РАДИОПОГЛОЩАЮЩЕЕ ПОКРЫТИЕ

Способ снижения радиолокационной заметности объекта

МАЛОЗАМЕТНЫЙ ЛЕТАТЕЛЬНЫЙ АППАРАТ

... 1. Летательный аппарат (10), включающий в себя:- по меньшей мере одну турбину (18) для приведения в движение летательного аппарата (10) по меньшей мере с одним турбинным отверстием (14, 16),- по меньшей мере одну нишу (20, 24, 26), через которую предусмотрена возможность ввода других компонентов летательного аппарата (10) вовнутрь летательного аппарата (10),при этом летательный аппарат (10) выполнен таким образом, что он имеет малую радиолокационную сигнатуру,при этом по меньшей мере одно турбинное отверстие (14, 16) и по меньшей мере одна ниша (20, 24, 26) расположены на первой стороне (12) летательного аппарата (10),при этом вторая сторона (30) летательного аппарата (10) выполнена таким образом, что она имеет меньшую радиолокационную сигнатуру, чем первая сторона (12).2. Летательный аппарат (10) по п.1, при этом вторая сторона (30) имеет по существу невозмущенную поверхность.3. Летательный аппарат (10) по п.1, при этом вторая сторона (30) не имеет ниш.4. Летательный аппарат (10) по п.2 ...

КЕРАМИЧЕСКИЕ КОМПОЗИТНЫЕ МАТЕРИАЛЫ ДЛЯ ОБЛИЦОВКИ СТЕН, ОБЛАДАЮЩИЕ СВОЙСТВАМИ ЭЛЕКТРОМАГНИТНОГО ЭКРАНИРОВАНИЯ

... 1. Способ покрытия субстратов, включающий следующие этапы:. ! a) подготовка субстрата, ! b) нанесение состава по меньшей мере на одну сторону субстрата, состав содержит неорганическое соединение, причем неорганическое соединение включает в себя по меньшей мере один металл и/или полуметалл, выбранный из группы, включающей Sc, Y, Ti, Zr, Nb, V, Cr, Mo, W, Mn, Fe, Co, B, Al, In, Tl, Si, Ge, Sn, Zn, Pb, Sb, Bi или их смеси, и по меньшей мере один элемент, выбранный из группы, включающей Te, Se, S, O, Sb, As, P, N, C, Ga или их смеси, и электропроводящее соединение, выбранное из группы, включающей металлы, металлические частицы, металлические сплавы, частицы металлические сплавы, электропроводящие соединения, содержащие углерод и смеси таковых, ! c) сушку состава, нанесенного на этапе b), ! d) нанесение по меньшей мере одного покрытия по меньшей мере на одну сторону субстрата, на которую на этапе b) был нанесен состав, причем покрытие содержит силан с общей формулой (Z1)Si(OR)3, где Z1 представляет ...

Ultrahochfrequenzwellen absorbierende Mehrschichtstruktur

Low radar reflection glazing element for building near airport radar installation - has thick front glass pane sepd. by wide space from back glass contg. electroconducting layer

Low radar reflection glazing element has a 4-15 mm thick front glass pane (1) sepd. by a 6-24 mm wide gas space from a back glass pane (2) which has, on its surface facing the front glass pane, a translucent electroconductive layer (3) with a surface resistivity of 1200-3500 ohms/sq.cm./mm front pane thickness. USE/ADVANTAGE - For fitting in building walls located within the range of stationary airport radar equipment and which are oriented perpendicular to the radiation direction. Element has a smooth outer surface (for improved appearance and easy cleaning) and has low radar reflection (less than 10%, pref. less than 1% vertical incidence) esp. in the 1 GHZ region to reduce radar noise.

Beschusshemmender Liner mit Abschirm bzw. Ablenkwirkung gegen elektro-magnetische Strahlung

Abschirmung

Electrically conducting paste, useful for electronic machines, contains an electroconductive filler comprising a thermoplastic or thermosetting resin, compounded with copper micro-fibers

An electrically conducting paste contains an electroconductive filler comprising a thermoplastic resin or a thermosetting resin, mixed with copper micro-fibers.

Verbundwerkstoffstruktur, fähig zur Absorption und Dissipation von auffallender elektromagnetischer Strahlungsenergie, insbesondere für Luft-, See- und Landfahrzeuge und für feste Bodeneinrichtungen

Absorber für electromagnetsiche Wellen

Windkraftanlagen und Windkraftanlagen-Rotorblätter mit verringerten Radarquerschnitten

Windkraftanlagen-Rotorblätter mit verringerten Radarquerschnitten enthalten eine Schale mit einer Vorderkante, die einer Hinterkante gegenüberliegt, ein strukturelles Stützelement, das die Schale stützt und im Inneren des Windkraftanlagen-Rotorblattes zwischen der Vorderkante und der Hinterkante angeordnet ist und sich über wenigstens einen Abschnitt einer Rotorblattspannweite erstreckt, wobei das strukturelle Stützelement Glasfasern aufweist, einen oder mehrere Hohlräume innerhalb des Windkraftanlagen-Rotorblattes und ein leichtes breitbandiges Radar absorbierendes Füllmaterial, das in wenigstens einem von dem einem oder den mehreren Hohlräumen angeordnet ist, um den verringerten Radarquerschnitt zu erzielen.

Fensterverglasung

Verfahren zur Herstellung eines Papiers zur Absorption elektromagnetischer Felder

Die Erfindung betrifft ein Verfahren zur Herstellung eines Papiers zur Absorption elektromagnetischer Felder, bei dem ein Rohpapier mit einer dotiertes Ferritfeinstpulver enthaltenen Suspension beschichtet wird.

Wind turbine composite structures

Electromagnetic-wave energy-absorbing material

... 679,259. Modifying line circuits to improve transmission. HAZELTINE CORPORATION. Nov. 3, 1947 [Nov. 5, 1946], No. 29311/47. Class 40 (iv). [Also in Group XL (b)] An electromagnetic wave energy absorbing medium comprises resistive material dispersed in a dielectric and in combination with conductive material in such proportions that substantially equal amounts of electric and magnetic energies are dissipated and the wave impedance of the medium is therefore almost entirely resistive. Resistive particles, e.g. comminuted iron or non-magnetic material, may be dispersed throughout a dielectric to form an isotropic energy-absorbing medium 10 in a co-axial line 11, 12, Fig. 1. The medium 10 may be moulded into blocks or discs or extruded upon a line conductor. The optimum radius of the particles is of the order of one radian length( 1/2# of wavelength) measured in the material of the particle. In a line having spaced conductors 11, 12, Fig. 3, alternate dielectric layers 13, 14 may be used having ...

Microwave absorbing systems

Radar signature reduction

Radar signature reduction apparatus for a vehicle (e.g. an aircraft or missile) equipment installation including equipment and a radiation transparent panel behind which the equipment is mounted, the apparatus including means to temporarily place a radar absorption and/or deflection means between the equipment and a remote vehicle detection radar source during periods in which the equipment is non-operating and to temporarily remove the radar absorption and/or deflection means during periods in which the equipment is operating. The radar absorption and/or deflection means may be an inflatable cone 7 of a thin flexible metallised coated material mounted in a radome ahead of the aircraft/missile's radar 2.

Woody electric wave absorber

A woody electric wave absorber characterized in that it is a laminate type magnetic wood prepared by pressure-pasting an opposed plate material pair comprising natural wood or a processed woody material via a magnetic layer containing a ferrite powder, it contains a non-magnetic stainless steel powder in an amount of 20 to 80 vol% relative to the ferrite powder, the magnetic layer has a total volume content for the ferrite powder and the non-magnetic stainless steel powder of 10 to 40% and has a thickness of 0.5 to 5.0 mm, it has a central frequency within 1 to 8 GHz, and has an electric wave absorption characteristic of 10 dB or more in a 2.45 GHz band or a 5.2 GHz band of frequency.

Radiation absorber for a radio frequency device

Radio wave shielding partitioning plane material and method for manufacturing

Provided is a radio wave shielding partitioning plane material which can freely adjust radio wave environment as needed. A radio wave shielding layer (12) for shielding from radio waves is arranged on the surface of a plane material main body (11) arranged to partition a space.

Temperature controlled, radar absorbent arrangement

Radar attenuating textiles

Electrically conductive composites

A method of modifying propagation characteristics of electromagnetic radiation having a radiation frequency comprises allowing radiation to be incident upon an electrically conductive composite, which comprises an electrically non-conductive material and an electrically conductive material. The composite exhibits a plasma-like response and has a plasma frequency below that of bulk metals. The plasma frequency is located relative to the radiation frequency such that the radiation propagation at the radiation frequency is modified by the composite's plasma-like response. The conductive and non-conductive materials may be both particulate with the conductive material being less than a tenth the size of the non-conductive material. The non-conductive material may have a particle size of not more than 100 microns. Alternatively, only the conductive material may be particulate and may have a size of & 1 micron. The conductive material may comprise gold or silver particles and the non-conductive ...

Structure for the absorption of electromagnetic waves

Structure for the absorption of electromagnetic waves comprising a stack of thin layers A n obtained from a layer A in a material chosen from among the semiconducting polymers and the charged polymers, and from a layer B in a material chosen from among the insulating polymers, polyethylene, polystyrene, polyvinyl chloride, the stack A n having moreover a sequence f giving it a fractal organisation.

Electromagnetic radiation absorber

An electromagnetic radiation absorber comprises a conductive layer 1 which is in contact with a dielectric layer 5. The conductive layer 1 includes a plurality of apertures of sub-wavelength dimensions 9. The thickness of the absorber is less than g min/4n, where n is the refractive index of the dielectric layer 5 material. The dielectric layer 5 may be sandwiched between conductive layers 1, 3. The apertures may be periodic slits which are parallel or non-parallel or curved. The slits may be arranged in three sets of parallel slits with a sixty degrees azimuthal separation. The dielectric material 5 may have a refractive index which can be actively varied. The absorber may be compact, flexible and light weight and could be used to cover vehicles or buildings. It may further be used as a microwave heating element or part of a tagging system.

Low frequency electromagnetic absorption surface

Wind turbines incorporating radar absorbing material

A wind turbine blade 100 comprising a shell 108 defining a hollow interior, where a reinforcing spar structure extends longitudinally and comprises a spar cap 106 connected to or integrated with the shell. Radar-absorbing material is incorporated within the blade, where the radar-absorbing material includes an impedance layer 118 located near an exterior surface of the shell and a radar-reflecting surface inboard of and spaced apart from the impedance layer. The impedance layer and the radar-reflecting surface together form a radar absorber. In spar cap regions of the blade, the radar-reflecting surface is formed by the spar cap. A dielectric component 120 in the form of a glass-fibre pultrusion may be provided between the spar cap and the impedance layer. A method of making a wind turbine blade is also claimed.

Radiation attenuation

Radar absorbing material compatible with lightning protection systems

A wind turbine component incorporating radar-absorbing material having increased compatibility with lightning protection systems includes a radar reflecting ground plane having an electrical conductivity and/or a dielectric constant that is higher in the presence of an electric field having a frequency of 1 GHz and above, i.e. navigation radar frequencies, than in the presence of an electric field having a frequency of 10 MHz and below commonly associated with lightning. Suitable materials for the ground plane include ferroelectric and ferrimagnetic materials and percolating material combinations, all of which have frequency-dependent properties that can be tuned to make the ground plane highly reflective at radar frequencies and benign at lightning discharge frequencies. A percolating combination may be tuned for conductivity to peak between 1 and 10GhZ. Reduces interactions between lightning receptors and the ground plane.

Improvements in or relating to composite structures

Structures with magnetic properties

Mounting structure

A mounting structure for supporting an object (i.e. aircraft or test model of an aircraft) 102 during a radar cross section measurement, comprising a base 108 configured to rotate about a first axis, at least one elongate support 112 extending upwardly from the base 108 to a tip configured to receive the object 102, and at least one shroud 110, housing at least a portion of the elongate support 112, configured to rotate about a second axis, the second axis being substantially parallel to the first axis, the rotation of the shroud 110 about the second axis being in a direction that is opposite to the rotation of the base 108 about the first axis, where the rotational speeds may be substantially equal. The shroud may be at least partially coated in a radar absorbent material (RAM), and may comprise a tapered portion and a tear-drop shaped cross section. There may also be provided one or more radar antennas mounted within a moveable and rotatable measurement module 116, coupled to a frame ...

Screens for RF magnetic flux

A panel

Moisture-degradable alkali oxide siliceous material,and electromagnetic radiation-interactive article comprising same

A PHOTOVOLTAIC ELEMENT WITH AN INCLUDED RESONATOR

A photovoltaic element with an include resonator

A photovoltaic element with an include resonator

ANCHORAGE MEANS FOR INTERMEDIATE EDDY IMPLANTS

EINRICHTUNG ZUR ERZEUGUNG DEFINIERTER ELEKTROMAGNETISCHER FELDER

ABSORBER FOR ELECTROMAGNETIC RADIATION

MICROWAVE ABSORBER IN PARTICULAR FOR APPLICATIONS OF HIGH TEMPERATURES

STRAHLENSCHUTZEINRICHTUNG FÜR MOBILTELEFONE

TIFF 00000006.TIF 297 212 ...

EINRICHTUNG ZUR ERZEUGUNG DEFINIERTER ELEKTROMAGNETISCHER FELDER

MEANS FOR ABSORBING ELECTROMAGNETIC WAVES, PROCEDURES FOR THE PRODUCTION AS WELL AS USE OF THE MEANS.

RADAR JETS ABSORBING EXTERNAL FACADE.

DEVICE FOR THE EMI EXAMINATION OF ELECTRONIC DEVICES.

FASSUNG ZUR BEFESTIGUNG EINES STEINES AN EINEM GEGENSTAND, INSBESONDERE AUF DER ANTENNE EINES MOBILTELEFONS

The invention relates to a holder for a stone (2) for providing protection from the electromagnetic radiation from electronic devices. The inventive holder has a fixing device for fixing to another object, especially to a device that produces electromagnetic fields, for example a mobile telephone (8). Said fixing device can be connected to the object by clamping or adhesive bonding.

REFLECTION ARM WALL ELEMENT FOR RADAR RADIATION

ELECTRICALLY LEADING ELEMENT AND PROCEDURE FOR THE PRODUCTION OF THE SAME

DEVICE AND PROCEDURE FOR WARMING UP CONSTRUCTION UNITS FROM MICROWAVE-ABSORBING PLASTIC

NEW LATTICE

Method and apparatus for steering and stabilizing radio frequency beams utilizing photonic crystal structures

Radar absorber and method of manufacture

Hand-portable telephone with radiation absorbing device

Housing with radar-absorbent properties

Device for protection against the biological effects of electromagnetic non-ionising radiations, particularly those emitted by vdu equipment

Method of reducing infrared viewability of objects

RADAR ALTERING STRUCTURE USING SPECULAR PATTERNS OF CONDUCTIVE MATERIAL

A radar altering structure comprises: a structure; and at least one layer of conductive material disposed at at least one surface of the structure, the layer comprising a plurality of conductive paths arranged in a specular pattern to reduce the radar cross section of the structure.

UNIVERSAL CAMOUFLAGE MATERIAL FOR CAMOUFLAGE CLOTHING AND FOR CAMOUFLAGE

The invention relates to novel camouflage means for the camouflage of objects having a low or increased temperature, whereby said means can be used in a universal manner. A camouflage layer is preferably provided for the visible spectrum, i.e. the near, middle and far infrared and the radar wave spectrum. The camouflage layer (11) is provided with an adornment (15) that comprises a toothing structure (14). Furthermore, a camouflage material is provided which comprises at least one first layer for camouflage, preferably for the visible spectrum, i.e. the near, middle and far infrared and the radar wave spectrum. Said camouflage material also comprises at least one second layer for fixedly holding the first layer.

EDGE CONCEALMENT SYSTEM FOR ABATING RADAR DETECTABILITY OF AIRCRAFT

An edge concealment system for abating electrical discontinuities between externally exposed edges of adjacent surface pieces separated by a gap. The system includes a cover component shrouding each edge and able to absorb or conduct incident radar energy. A male element and a female element extend between the cover component and the surface piece for positive engagement of the male element within the female element and retention of the cover component with the surface piece. Preferably the engagement of the male and female elements includes an audible signal such as a click sound when the engagement occurs so that operators are confirmatorily advised upon positive placement.

LOW FREQUENCY ELECTROMAGNETIC ABSORPTION SURFACE

A radiation absorber comprising a substrate having free charges capable of being driven to form resonance charge density oscillators and a dielectric layer coated onto said surface wherein the dielectric layer has a textured/patterned surface. The substrate is preferably metallic and the dielectric layer is waveform.

INCORPORATION OF FUNCTIONAL CLOTH INTO PREPREG COMPOSITES

Incorporation of functional cloth into prepreg composites A combined prepreg material (10) for use in composite lay-up techniques is described. The material (10) comprises first and second layers (12, 18) impregnated with a matrix material such as a resin. The first layer (12) is a functional layer and the second layer (18) is a keying layer. The keying layer (18) comprises a keying medium to facilitate bonding of the combined prepreg material (10) to a gel coat. The functional layer (12) comprises a woven cloth (14). A circuit is provided on a first surface (16) of the cloth (14).

IMPROVEMENTS IN OR RELATING TO COMPOSITE STRUCTURES

A split core for a composite structure is described. The split core includes a first core layer, a second core layer, and a functional interlayer disposed between the first and second core layers. The first core layer separates the functional interlayer from a functional layer of the composite structure and/or from an outer surface of the composite structure. The thickness of the first core layer is substantially uniform across the composite structure and the distance between the functional interlayer and the functional layer and/or the outer surface of the composite structure is substantially constant across the composite structure.

WIND TURBINE BLADES

A wind turbine blade comprising a multilayer composite structure including a first reflective layer, and a second layer comprising a plurality of resistive circuit analogue (CA) elements. The CA elements are tuned so as to interact with said first layer to provide absorption of electromagnetic (EM) energy over a desired frequency range. The parameters of the CA elements can be varied to provide for frequency tuning and to maintain absorption at a specific frequency range despite varying layer separation, while at the same time ensuring that the mechanical properties of the CA layer are compatible with integration into the turbine blade.

METAL OXIDE DIELECTRIC MATERIAL

A transducer material responsive to electromagnetic energy, especially to microwave and radio frequency energy, comprises a heat sensitive material having a characteristic which varies in response to heating thereof, and a high permittivity, high loss dielectric material which changes its temperature in response to the energy. The heat sensitive material comprises vanadium oxide, and the dielectric material comprises barium titanate and is thermally associated with the vanadium oxide for transferring heat to the latter. The vanadium oxide may be doped or coated with the barium titanate. The transducer material may be used e.g. to coat potential targets to deceive enemy radar.

METHOD AND APPARATUS FOR REDUCING THE INFRARED AND RADAR SIGNATURE OF A VEHICLE

A honeycomb structure (Fig. 4) mounted on a back panel (Fig. 5) especially on a vehicle, where the honeycomb structures are filled with an infrared absorbing material (Fig. 2) to reduce the radar and heat signature of a vehicle.

RADIO FREQUENCY LENS AND METHOD OF SUPPRESSING SIDE-LOBES

An RF lens according to the present invention embodiments collimates an RF beam by refracting the beam into a beam profile that is diffraction-limited. The len s is constructed of a lightweight mechanical arrangement of two or more materials, where the materials are arranged to form a photonic crystal structure (e.g., a series of holes defined within a parent material). The lens includes impedance matching layers, while an absorptive or apodizing ma sk is applied to the lens to create a specific energy profile across the lens. The impedance matching layers and apodizing mask similarly include a photonic crystal structure. The energy profile function across the lens aperture is continuous, while the derivatives of the energy distribution function are similarly continuous. This lens arrangement produces a substantial reduction in the amount of energy that is transmitted in the side-lobes of an RF system.

WIND TURBINE HAVING A REDUCED RADAR CROSS SECTION

A wind turbine comprising a support structure and one or more turbine blades is disclosed, that incorporates means for reducing the radar cross section (RCS), wherein the support structure is notionally divided into an upper section in the shadow of the blade sweep area, and a lower section beneath the upper section, wherein the upper section is adapted to have the means for reducing the RCS, and the lower section does not have the said adaptation. The invention makes use of the realisation that the blade masking the tower as it rotates (or the blade being masked by the tower if facing away from a radar), contributes significantly to interference to radar systems, and so localised application of e.g. RAM can give good RCS reduction at a lower cost than treating the whole structure.

DEVICE FOR ABSORBING ELECTROMAGNETIC WAVES DESIGNED TO BE SECURED TO A WALL

L'invention concerne un dispositif d'absorption (100) d'ondes électromagnétiques destiné à être fixé sur une paroi (12). Le dispositif d'absorption (100) comporte : une plaque métallique (102) destinée à être fixée sur la paroi (12), un panneau diélectrique (104) à distance de la plaque métallique (102), et délimitant avec la plaque métallique (102) un volume (112) entre la plaque métallique (102) et le panneau diélectrique (104), un réseau de dipôles résistifs (106), où tous les dipôles résistifs (106) sont fixés sur une même face du panneau diélectrique (104), et où chacun est constitué de deux plaquettes métalliques (108a-b) à distance l'une de l'autre et d'une résistance (110) disposée entre des bords en regard de deux plaquettes métalliques (108a-b) voisines. Le dispositif d'absorption comprend également des parois métalliques (114) électriquement connectées à la plaque métallique (102) et s'étendant depuis la plaque métallique (102) et en direction du panneau diélectrique (104).

LINEAR DUAL-POLARISED WIDE BAND COMPACT ANTENNA

Une antenne (2) d'émission/réception d'ondes électromagnétiques, du type comprenant un plan réflecteur (12), une surface absorbante (10) et deux dipôles (18) orthogonaux comprenant chacun deux éléments rayonnants (4). Les éléments rayonnants (4) sont sensiblement plans et présentent chacun une forme générale triangulaire.

ARRANGEMENT FOR PROVIDING VEHICLES WITH ENERGY COMPRISING MAGNETIZABLE MATERIAL

The invention relates to an arrangement for providing vehicles with energy by magnetic induction, wherein the arrangement comprises: - a primary side electric conductor arrangement (26) adapted to generate an electromagnetic field while an alternating electric current flows through the conductor arrangement (26) and - a field shaping layer (1e - 1f) comprising magnetizable material adapted to shape magnetic field lines of the electromagnetic field. The field shaping layer (1e - 1f) comprises a plurality of elements (1e, 1f, 1g, 1h) made of the magnetizable material, wherein neighbouring elements (1a, 1b; 1a, 1c) are positioned at a distance (gaps 2) to each other.

Flächenhafter breitbandiger Absorber für elektromagnetische Zentimeterwellen

Reflexionsarme Dämpfungsanordnung für elektromagnetische Wellen

Reflexionsarme Dämpfungsanordnung für elektromagnetische Wellen und Verfahren zur Herstellung derartiger Anordnungen

Vorderstrammereinrichtung für Skibindungen

ABSORBER CIRCUIT ABSORBER FOR ELECTROMAGNETIC WAVES.

TRICHTERFOERMIGER TRANSVERSE ELECTROMAGNETIC WAVE WITH LAUFZEITAUSGLEICH.

Universal camouflage material in particular for camouflage clothes.

Connector microwave attenuator for equipment housed in an electromagnetically shielded housing assembly and including a housing having such a connector.

Helicopter blade - with balance weight of lead subdivided in many segments to reduce passive linear antenna back-scatter

A plastic rotor blade for helicopters has necessarily near the leading edge and parallel to it a balance weight, usually made of a cord of lead. To reduce the backscatter of this metal which helps to spot helicopters in the IFF (identification friend or foe) mode on the radar screen, it is suggested to subdivide this cord in many short segments. Their surface should not be left smooth and they should be wrapped in high-frequency absorbing material. ADVANTAGE - This reduces or nullifies the effect as a passive linear antenna backscatterer.

DEVICE FOR THE EMI EXAMINATION OF ELECTRONIC DEVICES.

ФАЗОВРАЩАТЕЛЬ ДЛЯ ИНДИВИДУАЛЬНОЙ ЗАЩИТЫ ПРОТИВ ДЕЙСТВИЯ ЭЛЕКТРОМАГНИТНЫХ ВОЛН

Изобретение относится к фазосдвигающему устройству для защиты людей от электромагнитных волн. Устройство содержит несколько фазосдвигающих модулей (1, 2), каждый из которых содержит две идентичные или подобные плоские петли (3, 4, 5, 6), которые электрически соединены друг с другом с помощью двух межпетлевых соединительных элементов (7, 8, 9, 10) в области первого разрыва (11, 12) каждой из петель и электрически изолированы друг от друга за исключением межпетлевых соединительных элементов. Каждый модуль электрически соединен с другим модулем с помощью двух межмодульных соединительных элементов (13, 14) и выполнен, по существу, идентичным или подобным другим модулям. Межмодульные соединительные элементы соединяют одну из петель одного из модулей в области второго разрыва (15) петли с одной из петель другого модуля в области второго разрыва (16) этой петли. Модули электрически изолированы друг от друга за исключением межмодульных соединительных элементов.

Microwave-absorbing form-in-place paste

Antenna with lenses

Устройство для поглощения электромагнитного излучения

Устройство для поглощения электромагнитного излучения, содержащее подложку с нанесенным на ее поверхность радиопоглощающим материалом, включающим составленные в определенном соотношении, масс.%, полимерное связующее и порошковый наполнитель в виде трехкомпонентной смеси, частицы которой имеют сферическую форму, отличающееся тем, что толщина радиопоглощающего материала составляет 0,3-3,0 мм, в качестве компонентов смеси используют карбид циркония, оксид циркония и астрален, а диаметры частиц смеси составляют: РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 162 226 U1 (51) МПК H01Q 17/00 (2006.01) H05K 9/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014144509/08, 07.11.2014 (24) Дата начала отсчета срока действия патента: 07.11.2014 (45) Опубликовано: 27.05.2016 Бюл. № 15 карбид циркония от 20 до 50 мкм оксид циркония от 10 до 20 мкм астрален от 80 до 150 нм R U 1 6 2 2 2 6 (57) Формула полезной модели Устройство для поглощения электромагнитного излучения, содержащее подложку с нанесенным на ее поверхность радиопоглощающим материалом, включающим составленные в определенном соотношении, масс.%, полимерное связующее и порошковый наполнитель в виде трехкомпонентной смеси, частицы которой имеют сферическую форму, отличающееся тем, что толщина радиопоглощающего материала составляет 0,3-3,0 мм, в качестве компонентов смеси используют карбид циркония, оксид циркония и астрален, а диаметры частиц смеси составляют: Стр.: 1 U 1 U 1 (54) УСТРОЙСТВО ДЛЯ ПОГЛОЩЕНИЯ ЭЛЕКТРОМАГНИТНОГО ИЗЛУЧЕНИЯ 1 6 2 2 2 6 Адрес для переписки: 111116, Москва, ул. Авиамоторная, 2, ФГУП "ЦИАМ им. П.И. Баранова", отдел интеллектуальной собственности (73) Патентообладатель(и): Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения им. П.И. Баранова" (RU) R U Приоритет(ы): (22) Дата подачи заявки: 07.11.2014 (72) Автор(ы): Низовцев Владимир Евгеньевич (RU), Климов Денис ...

Экранирующий кожух для устройства проверки работоспособности радиостанции с штыревой антенной

Полезная модель направлена на создание конструкции экранирующего кожуха для устройства проверки работоспособности радиостанции с штыревой антенной, размещенной на подвижном объекте, с уменьшенным влиянием устройства на КСВ антенны.Указанный технический результат достигается тем, что в экранирующем кожухе для устройства проверки работоспособности радиостанции с штыревой антенной, содержащем корпус в виде металлического цилиндра, закрепленный в нижней части цилиндра фланец с вкладышами из магнитного материала, прокладку, помещенную на внешней стороне фланца, при этом во фланце и прокладке выполнены соосные отверстия, диаметр которых соответствует диаметру основания упомянутой антенны, верхняя часть упомянутого цилиндра закрыта металлическим диском, в центре которого установлен высокочастотный зонд, по внутреннему периметру упомянутых отверстий во фланце и прокладке размещена кольцеобразная упругая пластина, а на внутренней поверхности упомянутого цилиндра нанесен слой поролона, на поверхности которого закреплен, по крайней мере, один слой радиопоглощающего материала. 5 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 200 478 U1 (51) МПК H01Q 17/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H01Q 17/00 (2020.08) (21)(22) Заявка: 2019140688, 09.12.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 27.10.2020 (45) Опубликовано: 27.10.2020 Бюл. № 30 Адрес для переписки: 394026, г. Воронеж, Московский пр-кт, 7б, генеральному директору АО "ВНИИ "Вега" Штефану В.И. 2 0 0 4 7 8 U 1 (56) Список документов, цитированных в отчете о поиске: SU 1467617 A1, 23.03.1989. KR 1052559 B1, 29.07.2011. WO 2002084316 A1, 24.10.2002. SU 809673 A1, 28.02.1981. (54) Экранирующий кожух для устройства проверки работоспособности радиостанции с штыревой антенной (57) Реферат: Полезная модель направлена на создание и прокладке выполнены соосные отверстия, конструкции экранирующего кожуха для диаметр которых ...

Electromagnetic wave reverberation chamber

An electromagnetic wave reverberation chamber includes: an electromagnetic wave absorbing apparatus installed in an intended space of the electromagnetic wave reverberation chamber for adjusting a reflection characteristic of an inside of the electromagnetic wave reverberation chamber, wherein the electromagnetic wave absorbing apparatus have an electromagnetic bandgap structure including a plurality of unit cells arranged periodically.

Super lattice intrinsic materials

In an exemplary embodiment, a Super Lattice Intrinsic Material utilizes a coupling of an appropriate micro/macro structured substrate and a group of as-deposited nanostructures. Substrate texture can be provided either by prior or insitu processing, and the material depositions can be either uniform or non-uniform depending on the desired product parameters.

Multiple-layer radiation absorber

An apparatus or structure is provided for absorbing incident radiation, either electromagnetic or sound, comprising a multiple-layer composite means utilizing electromagnetic- or sound-radiation absorbing and partially transmitting layers on a substrate of conventional electromagnetic- or sound-absorbing and partially reflecting material, which act in concert to absorb a significant amount of the incident electromagnetic or sound radiation. A metamaterial [MM] means, configured for a specific electromagnetic or sound radiation frequency band that absorbs incident electromagnetic or sound radiation directed to a substrate of conventional electromagnetic-radiation absorbing or acoustical absorbing material, such as an array of pyramidal foam absorbers. Such a substrate may outgas into a high vacuum and reduce the capability of the vacuum-producing equipment to achieve such a high vacuum. The layers above this lowest substrate will also serve to seal the absorbing and reflecting substrate from the external vacuum and, therefore, not reduce the capability of any vacuum-producing equipment.

ANTENNA BEAM CONTROL ELEMENTS, SYSTEMS, ARCHITECTURES, AND METHODS FOR RADAR, COMMUNICATIONS, AND OTHER APPLICATIONS

The present invention provides, among other things, antenna beam control devices, systems, architectures, and methods for radar and other applications, such as wireless communications, etc., to improve transmit and/or receive performance of the devices and systems employing such antennas by deploying beam control elements () to increase antenna gain at an angle less than a first angle relative to the antenna gain at angle greater than a first angle. Beam control elements are deployed in combination with the one or more antennas () in various systems of the present invention, such that the impact of reflected radiation from wind mill, communication, or other towers supporting the system or other nearby structures, as well as radiation from nearby wireless communication networks is decreased to an acceptable level. The beam control elements can include absorbing and reflective material and can be placed in the antenna near field to minimize costs. 1. An apparatus comprising:at least one antenna, the antenna being a phased array where the antenna is configured to steer the radiation both azimuthally and by elevation; and, at least partially reflective material; and', 'an absorptive material positioned between the antenna and the at least partially reflective material configured to attenuate signals emitted or received by the antenna at a second azimuth angle that is greater than the first azimuth angle relative to at least one signal emitted or received by the antenna at a third azimuth angle less than the first angle., 'a beam control element positioned along a perimeter of the at least one antenna at a first azimuth angle relative to an azimuth reference axis perpendicular to a plane of a surface of the antenna that emits radiation, the beam control element comprising2. The apparatus according to claim 1 , wherein the beam control element is positioned to reflect side lobe radiation in the direction of main lobe radiation.3. The apparatus according to claim 1 , ...

Apparatus to reduce specific absorption rate

In described embodiments, a user is protected from potential health risks from emitted RF energy from a wireless handset or other device by reducing Specific Absorption Rate (SAR) of the device while avoiding, or even improving, the radiation pattern of the antenna. For example, a hat, cap or other covering of a device user's upper body includes a dual-layer structure comprising of carbon-loaded, open cell foam with a metalized layer. The dual-layer structure is imbedded in, for example, a hat with the carbon loaded foam facing away from the user's head. The covering provides for RF protection of the user to reduce SAR while maintaining relatively good return loss characteristics, thereby avoiding a negative impact on the desired antenna radiation pattern of the device.

ANTENNA GROUNDED WITH U-SHAPED HIGH-IMPEDANCE SURFACE METAL STRIPS AND ITS WIRELESS COMMUNICATION DEVICE

An antenna grounded with U-shaped high-impedance surface metal strips and its wireless communication device may include an antenna radiation unit and its ground plate, such that a plurality of high-impedance surface units are set in the ground plate at relevant intervals. 1. An antenna grounded with U-shaped high-impedance surface metal strips , comprising:an antenna radiation unit including a ground plate;a plurality of high-impedance surface units set on the ground plate at relevant intervalswherein each high-impedance surface unit includes three high-impedance surface metal strips connected to each other in a U shape, and high-impedance surface through holes set at the bottom side of the U shape, wherein the high-impedance surface units are connected to each other by means of the high-impedance surface through holes.2. The antenna grounded with U-shaped high-impedance surface metal strips of claim 1 , wherein the ground plate is a printed circuit board (PCB) claim 1 , the high-impedance surface units are located on the surface of the PCB claim 1 , and the high-impedance surface through holes are set to pass through the PCB.3. The antenna grounded with U-shaped high-impedance surface metal strips of claim 1 , wherein a line breadth of one of the high-impedance surface metal strips is about 1 mm claim 1 , the width of one of the U-shaped high-impedance surface units is about 6 mm claim 1 , the height of one of the U-shaped high-impedance surface units is about 8 mm claim 1 , and the interval between the plurality of high-impedance surface units is about 0.5 mm.4. The antenna grounded with U-shaped high-impedance surface metal strips of claim 1 , wherein the U-shaped high-impedance surface units are set in the ground plate in the form of rows.5. The antenna grounded with U-shaped high-impedance surface metal strips of claim 4 , wherein the high-impedance surface metal strips on the bottom side of the U shape are substantially parallel with the rows formed by the ...

WIND TURBINES

A wind turbine having a tower and at least one radar-absorbing panel attached to an outer surface of the tower is described. The panels are attached by mounts that do not penetrate the outer surface of the tower. In preferred embodiments of the invention, the mounts attach magnetically to the outer surface of the tower. 1. A wind turbine comprising a tower and having at least one radar-absorbing panel attached to an outer surface of the tower by means of a mount that does not penetrate the outer surface.2. The wind turbine according to claim 1 , wherein the or each panel is magnetically attached to the outer surface.3. The wind turbine according to claim 2 , wherein the or each panel is attached to the tower by a mount having a magnetic base for attaching magnetically to the outer surface of the tower and an engagement portion for engaging with the panel.4. The wind turbine according to claim 3 , wherein the engagement portion engages mechanically with the panel.5. The wind turbine according to claim 1 , wherein the or each panel is spaced apart from the outer surface of the tower such that a gap is defined between the panel and the outer surface.6. In combination claim 1 , a radar-absorbing panel for reducing the radar cross-section of a wind turbine tower claim 1 , and a mount for attaching the panel to an outer surface of the tower without penetrating the outer surface.7. The combination according to claim 6 , wherein the tower is curved and the panel is curved to conform to the curvature of the tower.8. The combination according to claim 6 , further comprising spacer means for maintaining separation between the panel and the outer surface of the tower.9. A method of reducing the RCS of a wind turbine claim 6 , the method comprising mounting a plurality of radar-absorbing panels to an outer surface of the wind turbine tower without penetrating the outer surface.10. The method of claim 9 , comprising magnetically attaching the panels to the outer surface.11. The ...

Multi-Spectral, Selectively Reflective Construct

A selectively reflective construct, and a method for making the construct, are described. In one embodiment reflectance, transmission and absorption properties may be controlled in multiple electromagnetic bands. A construct is described comprising a) a thermally transparent, visually opaque substrate comprising a polymeric material and a colorant, and b) a thermally reflective layer comprising a low emissivity component which is optionally transparent to radar signal. 1. A method of providing visual and thermal camouflage to a radar camouflaged vehicle comprising a front surface and a back surface;', 'a thermally transparent, visually opaque substrate adjacent the front surface; and', 'a thermally reflective layer comprising a low emissivity component adjacent the thermally transparent, visually opaque substrate wherein the construct has', 'i) an average reflection of <70% in the wavelength range of 400 nm-600 nm;', 'ii) an average reflection of >25% in the wavelength range of 9 μm-12 μm; and', 'iii) an average radar transmission >90% throughout the frequency range of about 1 GHz to about 20 GHz; and, 'a. forming a construct comprising'}b. placing the construct between a detector and a radar camouflaged vehicle, wherein the front surface of the construct is positioned toward the detector.2. A method for making a radar transparent , thermally and visually camouflaging construct , comprising the steps of:a. providing a first substrate comprising a thermally transparent first microporous polymeric material having a first surface and a second surface;b. providing a colorant;c. applying the colorant to at least the first surface of the first substrate to form a thermally transparent, visually opaque layer;d. providing a second substrate comprising a low emissivity component;e. orienting the low emissivity component of the second substrate towards the second surface of the first substrate;f. adhering the first and second substrates to form a construct having an average ...

RADIO-FREQUENCY (RF) PRECISION NULLING DEVICE

An exemplary interference nulling system includes an electromagnetic energy (e.g., RF) based system such as a radar system for transmitting radar signals and receiving return signals reflected from a target, and a nulling device having a surface for diffracting/blocking the transmitted signals to electromagnetically obscure the target. The nulling device is preferably sited between the transmitter and the target in a blanking range of the radar system. 1. An interference nulling system , comprising:an electromagnetic (EM) system for transmitting EM signals and receiving return signals reflected from a target; anda nulling device having a surface for diffracting/blocking the transmitted EM signals to electromagnetically obscure the target, wherein the nulling device is sited between the transmitter and the target in a blanking range of the EM system.2. The system of claim 1 , wherein the the EM system is a radar system.3. The system of claim 1 , wherein the nulling device has height and width determined by a geometry of at least one of the target and the site.4. The system of claim 1 , wherein the nulling device is sited in an optical line-of-sight between the radar system and the target.5. The system of claim 1 , wherein the nulling device includes plural separated metal plates covered in radar-absorbing material.6. The system of claim 1 , wherein each edge of the nulling device is notched to cancel the signals diffracted from the surface of the nulling device.7. The system of claim 6 , wherein a dimension of each notch is determined by at least one of the geometry of the target and the site.8. A nulling device having a surface for diffracting/blocking the transmitted radar signals to electromagnetically obscure the target claim 6 , wherein the nulling device is designed to be sited between an electromagnetic transmitter and a target.9. The nulling device of claim 8 , wherein the nulling device has height and width determined by a geometry of at least one of the ...

Device and method for the automated reading/writing of rfid tags

A device is provided for reading/writing RFID tags, and includes a so-called pre-defined reading site, on/in which at least one object bearing an RFID tag is to be places; at least one RFID antenna; and at least one RFID reader co-operating with the RFID antenna; the at least one RFID antenna being arranged in such a way as to read the at least one RFID tag of the at least one object placed on/in the reading site. A method for reading RFID tags is also provided.

RADIOWAVE ABSORBER

A radiowave absorber of an embodiment includes: core-shell particles each including: a core portion that contains at least one magnetic metal element selected from a first group including Fe, Co, and Ni, and at least one metal element selected from a second group including Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, rare-earth elements, Ba, and Sr; and a shell layer that coats at least part of the core portion, and includes an oxide layer containing at least one metal element selected from the second group and contained in the core portion; and a binding layer that binds the core-shell particles, and has a higher resistance than the resistance of the core-shell particles. The volume filling rate of the core-shell particles in the radiowave absorber is not lower than 10% and not higher than 55%. 1. A radiowave absorber comprising:a plurality of core-shell particles each including: a core portion containing at least one magnetic metal element selected from a first group including Fe, Co, and Ni, and at least one metal element selected from a second group including Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, rare-earth elements, Ba, and Sr; and a shell layer coating at least part of the core portion, the shell layer including an oxide layer containing at least one metal element that is selected from the second group and is contained in the core portion; anda binding layer binding the core-shell particles, the binding layer having a higher resistance than the core-shell particles,wherein a volume filling rate of the core-shell particles in the radiowave absorber is not lower than 10% and not higher than 55%.2. The radiowave absorber according to claim 1 , wherein the shell layer includes a carbon-containing material layer.3. The radiowave absorber according to claim 1 , which has an electrical resistance of 10 MΩ·cm or higher.4. The radiowave absorber according to claim 1 , wherein oxygen contained in the oxide layer is not less than 0.5 mass % and not more than 10 mass % claim 1 , ...

Antenna Arrangement

An antenna arrangement is provided, which includes first and second antenna elements. A feeder line connects the first and second antenna elements for feeding a signal to and from the first and second antenna elements and the signal is inductively coupled between the feeder line and a calibration line so it can be fed to measurement equipment.

COMPOSITE STRUCTURES

A foam core for a composite structure is described. The core includes a first core layer () and a second core layer (). The first core layer () is a dielectric foam material and the second core layer () is a radar reflecting ground plane comprising an electrically conductive foam material. 1. A foam core for a composite structure , the core comprising a first core layer and a second core layer , wherein the first core layer is a dielectric foam material and the second core layer is a radar reflecting ground plane comprising an electrically conductive foam material.2. The foam core of claim 1 , wherein the foam material comprising the second core layer contains particles of carbon.3. The foam core of claim 1 , wherein the first and second core layers are joined together without intermediate layers.4. The foam core of claim 1 , wherein the first and second core layers are joined together without adhesive.5. The foam core of claim 1 , wherein the first and second core layers are thermally bonded together.6. The foam core of claim 1 , wherein the core further comprises a third core layer and the second core layer is located between the first and third core layers.7. The foam core of claim 6 , wherein the third core layer is made from foam and bonded to the second core layer without adhesive.8. The foam core of claim 6 , wherein the thickness of the third core layer varies across the core.9. The foam core of claim 8 , wherein the thickness of the second core layer is substantially uniform.10. The foam core of claim 1 , wherein the second core layer is discontinuous and comprises a plurality of electrically isolated adjacent elements.11. The foam core of claim 10 , wherein the electrically isolated adjacent elements form a frequency selective surface.12. The foam core of claim 1 , wherein the core further comprises a plurality of drape-promoting formations.13. The core of claim 12 , wherein the drape-promoting formations are in the form of slits that extend through the ...

NEAR-FIELD ELECTROMAGNETIC WAVE ABSORBER

A near-field electromagnetic wave absorber formed by adhering pluralities of electromagnetic-wave-absorbing films each having a thin metal film formed on a surface of a plastic film, the thin metal film of at least one electromagnetic-wave-absorbing film having a thin film layer of a magnetic metal, and a large number of substantially parallel, intermittent linear scratches being formed in plural directions with irregular widths and irregular intervals on the thin metal film of at least one electromagnetic-wave-absorbing film. 1. A near-field electromagnetic wave absorber formed by adhering pluralities of electromagnetic-wave-absorbing films each having a thin metal film formed on a surface of a plastic film , the thin metal film of at least one electromagnetic-wave-absorbing film having a thin film layer of a magnetic metal , and a large number of substantially parallel , intermittent linear scratches being formed in plural directions with irregular widths and irregular intervals on the thin metal film of at least one electromagnetic-wave-absorbing film.2. The near-field electromagnetic wave absorber according to claim 1 , wherein adjacent electromagnetic-wave-absorbing films are adhered with their thin metal films facing each other.3. The near-field electromagnetic wave absorber according to claim 2 , wherein the facing thin metal films are electromagnetically coupled via an adhesive layer.4. The near-field electromagnetic wave absorber according to claim 1 , wherein said linear scratches are formed in plural directions on the thin metal films of all electromagnetic-wave-absorbing films.5. The near-field electromagnetic wave absorber according to claim 1 , wherein the thin metal film of each electromagnetic-wave-absorbing film has surface resistance in a range of 50-1500 Ω/square after the linear scratches are formed.6. The near-field electromagnetic wave absorber according to claim 1 , wherein said magnetic metal is nickel.7. The near-field electromagnetic wave ...

CORE FOR A COMPOSITE STRUCTURE AND METHOD OF FABRICATION THEREOF

A flexible core () for a composite structure is described. The core includes a first core layer (), a second core layer (), and a ground plane () between the first and second core layers. A plurality of slits () is provided in the core, and each slit extends through one of the first of second core layers and through the ground plane. The core may be the core of a sandwich panel, for example a sandwich panel of the type used in the composite construction of wind turbine blades (). 1. A core for a composite structure , the core comprising:a first core layer; a second core layer; anda ground plane between the first and second core layers; wherein a plurality of slits is provided in the core, and each slit extends through one of the first or second core layers and through the ground plane.2. The core of claim 1 , wherein each slit extends at least partially through the other of the first or second core layers.3. The core of claim 1 , wherein the ground plane includes a layer of conductive material.4. The core of claim 3 , wherein the ground plane includes a layer of carbon.5. The core of claim 3 , wherein the ground plane comprises electrically conductive foam.6. The core of claim 1 , wherein the first core layer comprises a dielectric material.7. The core of claim 1 , wherein the first and/or second core layers are made of foam.8. The core of claim 1 , wherein an impedance layer is provided on an outer surface of the core claim 1 , in spaced apart relation with the ground plane such that the impedance layer and the ground plane form radar absorbing material.9. A composite structure of sandwich panel construction and comprising a sandwich-panel core as claimed in .10. The composite structure of claim 9 , comprising an impedance layer spaced-apart from the ground plane.11. The composite structure of claim 10 , wherein the core is arranged within the composite structure such that the first core layer is located between the ground plane and the impedance layer.12. The ...

STRUCTURE HAVING NANOANTENNA AND METHOD FOR MANUFACTURING SAME

The present invention relates to a structure having a nanoantenna, a method for manufacturing same, a drug delivery body having the same, a thermotherapy complex, a drug therapy device, and a thermotherapy device. The structure of the present invention has a nanoantenna pattern formed on the outer surface of a porous micro-container, thereby enabling wireless control from the outside, and when the structure is used as a drug delivery system and a thermotherapy complex, drug therapy and thermotherapy can be carried out at a desired application region inside a living body at a desired time. Also, the structure of the present invention enables transmission and reception of a wireless signal with an external controller through the nanoantenna, thereby enabling the detection of a signal inside the living body and the transmission of the signal to the external controller, and the discharge of a drug or nanowires according to a response signal transmitted from the external controller. 136-. (canceled)37. A structure , comprising:a porous micro-container; anda nanoantenna pattern formed on an outer surface of the porous micro-container,wherein the nanoantenna pattern is formed to have an array of one or more nanoantennas which are arranged at regular intervals.38. The structure of claim 37 , wherein a basic framework of the porous micro-container consists of at least one metal selected from the group consisting of Ni claim 37 , Fe claim 37 , Cu claim 37 , Zn claim 37 , Au claim 37 , an alloy thereof claim 37 , and a metal coated with Au or a parylene polymer.39. The structure of claim 37 , wherein a solder hinge is attached to an inner edge of the porous micro-container.40. The structure of claim 37 , wherein the volume of the porous micro-container is 10 μmto 64 claim 37 ,000 claim 37 ,000 μm.41. The structure of claim 37 , wherein the regular intervals are 10 nm to 300 nm.42. The structure of claim 37 , wherein the nanoantenna includes a conductive material.43. The ...

SYSTEMS AND METHODS OF ANTENNA ORIENTATION IN A POINT-TO-POINT WIRELESS NETWORK

An exemplary method comprises positioning a first antenna to receive a first signal from a second antenna, the second antenna comprising energy absorbing material that functions to expand beamwidth, receiving the first signal from the second antenna, detecting a plurality of gains based on the first signal, repositioning the first antenna relative to the second antenna to a position associated with an acceptable gain based on the first signal, removing at least some of the energy absorbing material from the second antenna to narrow the beamwidth of the second antenna, receiving, by the first antenna, a second signal from the second antenna, detecting a plurality of gains based on the second signal, and repositioning the first antenna relative to the second antenna to a position associated with an increased gain of the plurality of gains based on the second signal, the increased gain being greater than the acceptable gain. 1. A system comprising: configured to be positioned to receive a first signal from a second antenna, the first antenna comprising energy absorbing material, the energy absorbing material enabling expansion of a beamwidth of the first antenna;', 'configured to be repositioned relative to the second antenna based on an acceptable gain of the first signal;', 'configured to be positioned to receive a second signal from the second antenna, at least some of the energy absorbing material being removed from the first antenna prior to reception of the second signal; and', 'configured to be repositioned relative to the second antenna based on an increased gain of the second signal, the increased gain being greater than the acceptable gain of the plurality of gains based on the first signal; and, 'a first antennaa meter coupled to the first antenna and configured to determine if a detected gain of the first signal is greater than or equal to the acceptable gain and to determine if a detected gain of the second signal is greater than or equal to the increased ...

TERMINAL DEVICE HAVING META-STRUCTURE

A terminal device includes a housing, a communication antenna, and an agglomerative meta-structure, wherein the agglomerative meta-structure comprises a first pattern layer connected in series between an input end and an output end of the agglomerative meta-structure, and a second pattern layer connected in parallel between the input end and the output end. 1. A terminal device comprising:a housing;a communication antenna installed in a first region in the housing and configured to transmit and receive electromagnetic waves; andan agglomerative meta-structure installed in a second region spaced from the first region in the housing and configured to agglomerate the electromagnetic waves received from the communication antenna, wherein the agglomerative meta-structure comprises:a first pattern layer connected in series between an input end and an output end of the agglomerative meta-structure; anda second pattern layer connected in parallel between the input end and the output end.2. The terminal device of claim 1 , wherein the first pattern layer has an equivalent circuit claim 1 , wherein the equivalent circuit comprises:a first inductor;a first capacitor connected in series to the first inductor;a second capacitor connected in series to the first capacitor; anda second inductor connected in series to the second capacitor,wherein the second pattern layer comprises:a third capacitor connected in parallel between the first capacitor and the second capacitor; anda third inductor connected in series to the third capacitor.3. The terminal device of claim 1 , wherein the first pattern layer comprises:an edge pattern formed along the inside of an outer surface of the agglomerative meta-structure; andextended patterns extending from given points or corners of the respective sides of the edge pattern toward the inside of the agglomerative meta-structure.4. The terminal device of claim 3 , wherein the extended patterns have extended ends that are centered on a middle of the ...

OFF-BOARD INFLUENCE SYSTEM

An influence system including open cell structures with one or more fractal reflective or resonating structures, wherein the fractal reflective or resonating structures are adapted to produce an emitted reflective or resonance signal that approximately matches a target electromagnetic signal reflection or resonance profile comprising a plurality of electromagnetic signal characteristics, said plurality of electromagnetic signal characteristics, a tow yoke coupled to one end of said blanket comprising a floatation chamber section, a tow cable adapted to tow said tow yoke and blanket, said tow cable comprising a low electromagnetic observable material or having a radar absorptive material coating. 1. An influence system , comprising:two layer open cell blanket formed with one or more fractal reflective or resonating structures, wherein the fractal reflective or resonating structures are adapted to produce an emitted reflective or resonance signal that approximately matches a target electromagnetic signal reflection or resonance profile comprising a plurality of electromagnetic signal characteristics, said plurality of electromagnetic signal characteristics comprises an electromagnetic signal reflection or resonance signals emitted from a source entity and reflected or resonated off said target entity, wherein the electromagnetic signal reflective or resonance signal has an approximate maximum intensity within an angle of approximately zero degrees to 30 degrees from a first plane defined by a face of the blanket, wherein said target electromagnetic signal reflection or resonance profile further comprises a a threshold signal intensity value which is determined based on said electromagnetic signal reflection or resonance from said target by said source entity;a tow yoke coupled to one end of said blanket comprising a floatation chamber section;a tow cable adapted to tow said tow yoke and blanket, said tow cable comprising a low electromagnetic observable material or ...

EQUIPMENT FOR THE REDUCTION OF THE RADAR MARKING FOR AIRCRAFTS

Equipment for the reduction of the radar marking of an aircraft V can be applied to at least one hot portion H of the aircraft, chosen from the following: a piloting cabin or cockpit, including at least one transparent portion; a first frame of the fuselage; a plurality of junction edges of components, including wings, tail veilings and engine air intakes; at least one motor face. The equipment includes at least one device for dissipating incident radar waves, which can be removably applied to at least one hot portion H of the aircraft without affecting the aerodynamic characteristics of the aircraft V. 2. The equipment according to claim 1 , wherein claim 1 , in order to reduce the radar marking coming from hot portions of the aircraft including the piloting cabin or cockpit claim 1 , which comprise at least one transparent portion claim 1 , said equipment comprises a metallization applied to said transparent portions.3. The equipment according to claim 2 , wherein the metallization is obtained by applying a plurality of coating layers onto the transparent portion of the piloting cabin claim 2 , comprising: at least one first layer or base claim 2 , for preparing the transparent portion to receive the metallization; at least one second layer claim 2 , which is the a metallizing conductive layer.4. The equipment according to claim 1 , wherein claim 1 , in order to reduce the radar marking coming from hot portions of the aircraft including at least one junction edge of components including wings claim 1 , tail veilings and engine air intakes claim 1 , the equipment comprises at least one coating portion claim 1 , which is positioned on a front edge of the components of the aircraft without affecting the aerodynamic profile thereof.5. The equipment according to claim 4 , wherein said coating portion comprises: a first structure of metal material claim 4 , fixed to structure of the component of the aircraft; a second radar-absorbing coating claim 4 , laid over said ...

Endoscope Storage Cabinet, Tracking System, and Signal Emitting Member

An endoscope storage cabinet for use with at least one endoscope having at least one signal emitting member associated therewith and configured to emit a signal indicative of at least one attribute of the at least one endoscope to which it is associated, the cabinet including: an enclosed structure formed by a plurality of walls defining an inner area which is accessible by at least one door; at least one hanger arrangement configured to support at least a portion of at least one endoscope positioned thereon; at least one signal receiving device associated with the enclosed structure and configured to receive the signal emitted by the at least one signal emitting member; and a local control device in communication with the at least one signal receiving device and configured to receive and process the signal emitted by the at least one signal emitting member. 1. An endoscope storage cabinet for use with at least one endoscope having at least one signal emitting member associated therewith , the at least one signal emitting member configured to emit a signal indicative of at least one attribute of the at least one endoscope to which it is associated , the cabinet comprising:an enclosed structure formed by a plurality of walls defining an inner area, wherein the inner area is accessible by at least one door;at least one hanger arrangement configured to support at least a portion of at least one endoscope positioned thereon;at least one signal receiving device associated with the enclosed structure and configured to receive the signal emitted by the at least one signal emitting member; anda local control device in communication with the at least one signal receiving device and configured to receive and process the signal emitted by the at least one signal emitting member.2. The endoscope storage cabinet of claim 1 , wherein the at least one door is locked by at least one locking arrangement in direct or indirect communication with the local control device.3. The ...

ELECTROMAGNETIC WAVE ABSORBER

An electromagnetic wave absorber that improves an electromagnetic wave absorption rate in a specific frequency is provided. The electromagnetic wave absorber includes a dielectric layer; a first metal conductive layer disposed on a first surface of the dielectric layer and having a slot positioned symmetrical about a center of the dielectric layer and a second metal conductive layer disposed on a second surface of the dielectric layer. 1. An electromagnetic wave absorber , comprising:a dielectric layer;a first metal conductive layer disposed on a first surface of the dielectric layer and having at least one slot symmetrical about a center of the dielectric layer; anda second metal conductive layer disposed on a second surface of the dielectric layer.2. The electromagnetic wave absorber according to claim 1 , wherein the slot has a split ring resonator (SRR) pattern having a centro-symmetry and a loop-on edge geometry.3. The electromagnetic wave absorber according to claim 1 , wherein the slot of the first metal conductive layer has a pinwheel structure that connects a plurality of the slots relative to a center of the first metal conductive layer.4. The electromagnetic wave absorber according to claim 3 ,wherein the plurality of the slots are disposed from the center of the first metal conductive layer, and each of the plurality of the slots includes a first slot portion that extends from a center of the first metal conductive layer, a second slot portion that crosses the first slot portion at a predetermined angle, a third slot portion that crosses the second slot portion at a predetermined angle, and a fourth slot portion that crosses the third slot portion at a predetermined angle.5. The electromagnetic wave absorber according to claim 4 , wherein the first slot portion and the second slot portion are connected to cross each other at about 90° claim 4 , the second slot portion and the third slot portion are connected to cross each other at about 90° claim 4 , and ...

APPARATUS FOR ASSIGNING IDENTIFICATION INFORMATION TO SLAVE BATTERY MANAGEMENT UNITS

Provided is an apparatus for assigning identification information to a plurality of slave battery management units. The apparatus assigns different identification information to a plurality of slave battery management units. The apparatus includes: a casing jig configured to at least partially cover the plurality of slave battery management units; a wireless communication unit including a plurality of antennas disposed so as to correspond one-to-one to the plurality of slave battery management units; and a controller configured to control the wireless communication unit so as to transmit a wireless signal including different identification information to the plurality of slave battery management units. 1. An apparatus for assigning identification information to a plurality of slave battery management units electrically each connected to a respective one of a plurality of battery modules mounted on a base plate of a battery pack , the apparatus comprising:a casing jig configured to at least partially cover the plurality of slave battery management units together with the base plate;a wireless communication unit including a plurality of antennas disposed in a region of the casing jig facing the base plate to each correspond to a respective one of the plurality of slave battery management units; anda controller electrically connected to the wireless communication unit,wherein the controller is configured to select at least one of the plurality of antennas and to transmit to the wireless communication unit a first control signal including identification information related to the at least one selected antenna, andwherein the wireless communication unit is configured to output a wireless signal indicating the identification information through an antenna associated with the identification information in response to the first control signal.2. The apparatus of claim 1 , wherein the controller is further configured to select two or more of the plurality of antennas at the ...

Broadband Metamaterial Enabled Electromagnetic Absorbers and Polarization Converters

An electromagnetic energy absorber comprising a thin electrically-conductive ground plane as a base. Dielectric layers are positioned over the ground plane and high impedance surface (HIS) as a top layer. The impedance layer can be formed by loading the lumped resistor to a metallic grating like an FSS (Frequency Selective Surface). An air-spacer between the substrates has replaced the problem of the large electrical thickness of the substrate with effective permittivity. Metamaterial structures enable control over the resonant frequencies, and performance is enhanced over a broad frequency band. In addition, two broadband reflective-type linear to orthogonal polarization converters are disclosed that provide improved bandwidth and angular stability performance.

TO A SOFT COLLISION PARTNER (AKA SOFT CAR) USED IN SYSTEM FOR TESTING CRASH AVOIDANCE TECHNOLOGIES

A soft body system adapted to form the body and exterior surface of a Guided Soft Target for testing crash avoidance technologies in a subject vehicle is disclosed. The soft body system is adapted to be mounted atop a motorized Dynamic Motion Element (DME) and when so mounted is adapted to collide with the subject vehicle while the DME is moving. The soft body system includes a semi-rigid form with an exterior surface. The form is sufficiently yielding so as to impart a minimal force to the subject vehicle upon impact. The form may be shaped like a vehicle or a part of a vehicle. The exterior surface includes a side skirt made of radar absorptive material (RAM), radar reflective material (RRM) or a combination of both, which is positioned adjacent to the ground and constructed to prevent radar wave from entering the soft body system. 1. A soft body system adapted to form the body and exterior surface of a Guided Soft Target for testing crash avoidance technologies in a subject vehicle , wherein the soft body system is adapted to be mounted atop a motorized Dynamic Motion Element (DME) and when so mounted is adapted to collide with the subject vehicle while the DME is moving , the soft body system comprising:a semi-rigid form with an exterior surface, the form sufficiently yielding so as to impart a minimal force to the subject vehicle upon impact, said force causing minimal to no damage to the subject vehicle, the form being shaped like a vehicle or a part of a vehicle; andthe exterior surface comprising a side skirt made of radar absorptive material (RAM), radar reflective material (RRM) or a combination of both, wherein the side skirt is positioned adjacent to the ground and comprises a side skirt edge that runs substantially parallel to the ground, the side skirt adapted to prevent radar waves from entering the soft body system.2. The soft body system of claim 1 , wherein the exterior surface comprising a front skirt made of RAM claim 1 , RRM or a combination of ...

TERAHERTZ METAMATERIAL

The present invention discloses a terahertz metamaterial. The terahertz metamaterial includes a substrate and an electromagnetic loss resonant ring structure disposed on the substrate, where an electromagnetic modulation function is realized on a terahertz band by adjusting different structural sizes and square resistance of the electromagnetic loss resonant ring structure. In the present invention, the electromagnetic loss resonant ring structure is disposed on the substrate, and the electromagnetic modulation function is realized on the terahertz band by adjusting the different structural sizes and square resistance of the electromagnetic loss resonant ring structure, thereby simplifying processing steps of a terahertz device, reducing a processing cost, and enabling a terahertz technology to be widely used in the field of electromagnetic communication. 1. A processing method of a terahertz metamaterial , comprising:covering an electromagnetic loss film on a substrate;processing the electromagnetic loss film to obtain a plurality of electromagnetic loss resonant ring structures of different sizes;wherein an electromagnetic modulation function is realized on a terahertz band by adjusting different structural sizes and square resistance of the electromagnetic loss resonant ring structure, wherein the substrate comprises a flexible substrate, and a material incorporated in the electromagnetic loss film is selected from nano-carbon powder, resin, or a combination of nano-carbon powder and resin.2. The processing method of the terahertz metamaterial according to claim 1 , wherein the electromagnetic loss resonant ring structure is a resonant ring structure that has an opening.3. The processing method of the terahertz metamaterial according to claim 2 , wherein the resonant ring structure that has an opening is U-shaped claim 2 , V-shaped claim 2 , C-shaped claim 2 , inverted h-shaped claim 2 , L-shaped claim 2 , or y-shaped.4. The processing method of the terahertz ...

Radiative transfer and power control with fractal metamaterial and plasmonics

Systems according to the present disclosure provide one or more surfaces that function as heat or power radiating surfaces for which at least a portion of the radiating surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges.

ELECTRONIC DEVICE WITH ENERGY ABSORBING/REFLECTING LAYER

The present disclosure is directed to an apparatus having an energy absorbing and/or reflecting layer. In one embodiment, the apparatus may include a display comprising at least one rigid transparent member having a composite energy/safety layer disposed thereon. The composite energy/safety layer may comprise a flexible, transparent plastic substrate layer having a carrier surface and an opposing back surface, and a multilayer energy control coating disposed on the carrier surface of the substrate layer, wherein the substrate layer and the multilayer energy control coating define an energy control film. At least one flexible, transparent, energy absorbing plastic safety layer may be bonded to a surface of the energy control film. The multilayer energy control coating may be configured to absorb and/or reflect energy in and below the Gigahertz frequency range and to minimize energy absorption and reflection in the Terahertz frequency range. 1. An electronic device comprising:a housing configured to at least partially surround the electronic device;a multi-layered display disposed within the housing, wherein the multi-layered display is configured to display images thereon; a flexible, transparent substrate layer comprising a carrier surface and an opposing back surface,', 'a multilayer energy control coating disposed on the carrier surface, wherein the multilayer energy control coating is configured to absorb or reflect at least a portion of energy within or below a Gigahertz frequency range, and minimize energy absorption and reflection in a Terahertz frequency range, and', 'at least one flexible, transparent, energy absorbing safety layer disposed on at least one of the back surface of the substrate layer, the multilayer energy control coating, and combinations thereof; and, 'at least one energy absorbing/reflecting layer affixed to at least a portion of the multi-layered display, wherein the at least one energy absorbing/reflecting layer comprises,'}at least one ...

ANTENNA MODULES HAVING FERRITE SUBSTRATES

An antenna module () has an antenna () that is formed on a ferrite substrate (), and the ferrite substrate is positioned within a small direct current (DC) magnetic field. The magnetic loss tangent of the ferrite is controlled by application of the small DC magnetic field, thereby improving antenna radiation efficiency and increasing the bandwidth of the antenna. 122. An antenna module () , comprising:{'b': 25', '31, 'an antenna substrate element () having a ferrite substrate () and magnetic material, the magnet material positioned such that a magnetic flux generated by the magnetic material passes through the ferrite substrate; and'}{'b': '21', 'an antenna () formed on the antenna substrate element.'}23233. The antenna module of claim 1 , wherein the antenna substrate element comprises a permanent magnet ( claim 1 , ) having the magnetic material.3. The antenna module of claim 1 , wherein the magnetic material is selected from a group including: Sm—Co claim 1 , Nd—Fe—B claim 1 , Fe—Pt claim 1 , Sm—Fe—N claim 1 , Co—Pt claim 1 , Mn—Al claim 1 , Mn—Bi claim 1 , Ba hexaferrites claim 1 , Sr hexaferrites claim 1 , and Al—Ni—Co.4. The antenna module of claim 1 , wherein the ferrite substrate comprises material selected from the group including: a spinel ferrite claim 1 , hexagonal ferrite claim 1 , garnet claim 1 , and a ferrite composite.5. The antenna module of claim 1 , wherein the magnetic material is between the ferrite substrate and the antenna.634. The antenna module of claim 5 , wherein the antenna substrate element has an insulator () formed between the magnetic material and the antenna.7. The antenna module of claim 1 , wherein the ferrite substrate has a first side and a second side opposite of the first side claim 1 , and wherein the magnetic material is formed on the first and second sides.8. The antenna module of claim 7 , wherein the ferrite substrate has a third side and a fourth side opposite of the third side claim 7 , and wherein the magnetic material ...

TECHNIQUES FOR FLEXIBLE ANTENNA

A flexible antenna is provided. The flexible antenna includes a cable comprising at least one conductor, and an antenna body comprising a protective layer and a flexible circuit layer. The flexible circuit layer including a non-conductive sheet, at least one conductive feed pad and at least one antenna element. The at least one antenna element is formed of a conductive particle based material comprising conductive particles dispersed in a binder so that at least a majority of the conductive particles are adjacent to, but do not touch, one another. The at least one antenna element is disposed between the protective layer and the flexible circuit layer. The at least one conductor of the cable is electrically connected to the at least one feed pad. 1a cable comprising at least one conductor; andan antenna body comprising a protective layer and a flexible circuit layer, wherein the protective layer is configured to provide at least one of structural support or protection to the flexible circuit layer, a flexible non-conductive sheet,', 'a first conductive metallic feed pad disposed on the flexible non-conductive sheet that is smaller than the flexible non-conductive sheet,', 'a second conductive metallic feed pad disposed on the flexible non-conductive sheet that is smaller than the flexible non-conductive sheet, and', 'an antenna element formed of a conductive particle based material applied to the flexible non-conductive sheet over at least a portion of the second conductive metallic feed pad and at least a portion of the flexible non-conductive sheet that does not include the second conductive metallic feed pad,, 'wherein the flexible circuit layer includeswherein the conductive particle based material comprises conductive particles dispersed in a binder so that at least a majority of the conductive particles are adjacent to, but do not touch, one another,wherein the protective layer and the flexible circuit layer are configured such that the antenna element is ...

OFF-BOARD INFLUENCE SYSTEM

An influence system including open cell structures with one or more fractal reflective or resonating structures, wherein the fractal reflective or resonating structures are adapted to produce an emitted reflective or resonance signal that approximately matches a target electromagnetic signal reflection or resonance profile comprising a plurality of electromagnetic signal characteristics, said plurality of electromagnetic signal characteristics, a tow yoke coupled to one end of said blanket comprising a floatation chamber section, a tow cable adapted to tow said tow yoke and blanket, said tow cable comprising a low electromagnetic observable material or having a radar absorptive material coating. 145.-. (canceled)46. A method of operation for an system comprising:identifying electromagnetic signals from sources emitted or received from or by one or more source entities that are to have behavior influenced in a predetermined way;determining an orientation from a predetermined position and a position of the one or more source entities;providing an influence system comprising a blanket formed with one or more fractal antenna sections adapted to resonate or reflect a plurality of electromagnetic signals based on reception of said electromagnetic signals, said orientation of one or more said source entities and said position of the one or more source entities as well as an predetermined orientation of the influence system with respect to said one or more source entities;mounting the influence system on a support system adapted to position said blanket with respect to one or more said source entities;providing and coupling a control system with said influence system adapted to control a position and orientation of said blanket with respect to said one or more source entities; andproviding a sensor system adapted to sense said electromagnetic signals and position and orient said support system and blanket so as to maximize reflections and resonance of said electromagnetic ...

ANTENNA

There is provided an antenna including an antenna element that has a prescribed length and detects a line of electric force, a transmission line that transmits an electrical signal, and a radio wave absorbing and attenuating part that has characteristics to absorb and attenuate a radio wave of a frequency band received by the antenna element and is arranged at least between the antenna element and the transmission line. 1. An antenna comprising:an antenna element having a prescribed length;a transmission line configured to transmit an electrical signal; anda radio wave absorbing and attenuating part configured to absorb and attenuate a radio wave of a frequency band received by the antenna element, wherein the radio wave absorbing and attenuating part is arranged between the antenna element and the transmission line,wherein the radio wave absorbing and attenuating part includes an insulator containing a magnetic material comprising ferrite; anda covering part arranged to cover the antenna element, the transmission line, and the radio waive absorbing and attenuating part, wherein the antenna is configured as a cable in which the antenna element, the transmission line, the radio wave absorbing and attenuating part, and the covering part are integrated.2. The antenna according to claim 1 , wherein a value of an imaginary part μ″ of a magnetic loss term of a complex magnetic permeability for the magnetic material is large in a frequency band which the antenna element is configured to receive.3. The antenna according to claim 1 ,wherein the radio wave absorbing and attenuating part is arranged to cover the transmission line along an approximately full length of the transmission line, andwherein the antenna element is arranged outside the radio wave absorbing and attenuating part.4. The antenna according to claim 3 , whereinthe antenna element is arranged to cover an approximately full length of the radio wave absorbing and attenuating part on an outer circumferential ...

RCS REDUCTION SURFACE, RCS REDUCTION MEMBER, AND RADAR TEST SYSTEM

An RCS reduction surface for reducing a radar cross section of an object is described. The RCS reduction surface comprises at least one absorber portion, wherein the absorber portion is configured to absorb radar waves. The RCS reduction surface further comprises at least one reflecting portion, wherein the reflecting portion is configured to reflect radar waves. A first plane being associated with a top surface of the absorber portion and a second plane being associated with a top surface of the reflecting portion are spaced from each other by a predefined distance. The predefined distance is configured such that radar waves with a predefined wavelength range that are reflected at the absorber portion and at the surface of the reflecting portion interfere destructively with each other. Further, an RCS reduction member and a radar test system are described 1. An RCS reduction surface for reducing a radar cross section of an object , said RCS reduction surface comprising:at least one absorber portion, said absorber portion being configured to absorb radar waves; andat least one reflecting portion, said reflecting portion being configured to reflect radar waves,wherein a first plane being associated with a top surface of said absorber portion and a second plane being associated with a top surface of said reflecting portion are spaced from each other by a predefined distance, andwherein said predefined distance is configured such that radar waves with a predefined wavelength range that are reflected at said absorber portion and at said reflecting portion interfere destructively with each other2. The RCS reduction surface of claim 1 , wherein said predefined distance is dependent on a wavelength of said radar waves.4. The RCS reduction surface according to claim 1 , wherein the absorber portion is established as a destructive interference absorber claim 1 , as a loss-based absorber claim 1 , and/or as a metamaterial-based absorber.5. The RCS reduction surface according ...

PROTECTION DEVICE

A protection device is described that comprises a covering incorporating an electromagnetic screening layer , a first antenna , a second antenna, and an inhibitor device operable to cause the first and second antennae to transmit respective inhibiting signals at or over respective frequencies or frequency ranges into a volume enclosed, at least in part, by the covering , in use. 1. A protection device comprising a covering incorporating an electromagnetic screening layer , a first antenna , a second antenna , and an inhibitor device operable to cause the first and second antennae to transmit respective inhibiting signals at or over respective frequencies or frequency ranges into a volume enclosed , at least in part , by the covering , in use.2. A device according to claim 1 , wherein the first antenna takes substantially the form of a loop.3. A device according to claim 2 , wherein the loop is suspended at a position spaced inwardly of the screening layer.4. A device according to claim 1 , wherein the second antenna takes the form of a discrete antenna.5. A device according to claim 4 , wherein at least one additional antennae is associated with the second antenna and connected to the inhibitor device to allow the transmission of inhibitor signals over further frequency ranges.6. A device according to claim 1 , wherein the second antenna is suspended from the cover.7. A device according to claim 6 , wherein the manner in which the second antenna is suspended allows adjustment of the position of the second antenna.8. A device according to claim 7 , wherein the second antenna is supported upon a strap or straps of adjustable length.9. A device according to claim 8 , wherein a hook and loop fastener is used to adjust the length of the strap or straps.10. A device according to claim 1 , wherein the inhibitor device incorporates a plurality of variable signal sources operable to generate the inhibitor signals for transmission via the first and second antennae.11. A ...

Radar sensor

The invention relates to a radar sensor including a radar antenna, a radar lens and a funnel element between the radar antenna and the radar lens. The funnel element includes a material which absorbs the radar radiation emitted by the radar antenna.

RADIO WAVE ABSORBER AND LAMINATE FOR RADIO WAVE ABSORBERS

A radio wave absorber (la) includes a resistive layer (), an electrical conductor (), and a dielectric layer (). The resistive layer () includes indium tin oxide as a main component. The electrical conductor () reflects a radio wave. The dielectric layer () is disposed between the resistive layer () and the electrical conductor () in the thickness direction of the resistive layer (). The dielectric layer () is formed of a polymer. The content of tin oxide in the indium tin oxide included in the resistive layer () is more than 0 weight % and less than 20 weight %. The number of hydrogen atoms included in the resistive layer () is 5% or more of the total number of indium atoms, tin atoms, oxygen atoms, and hydrogen atoms included in the resistive layer (). 1. A radio wave absorber comprising:a resistive layer comprising indium tin oxide as a main component;an electrical conductor that reflects a radio wave; anda dielectric layer disposed between the resistive layer and the electrical conductor in the thickness direction of the resistive layer and formed of a polymer, whereinthe content of tin oxide in the indium tin oxide is more than 0 weight % and less than 20 weight %, andthe number of hydrogen atoms comprised in the resistive layer is 5% or more of the total number of indium atoms, tin atoms, oxygen atoms, and hydrogen atoms comprised in the resistive layer.2. The radio wave absorber according to claim 1 , wherein the resistive layer remains in an amorphous state after the resistive layer is subjected to annealing at 150° C. and for 1 hour.3. The radio wave absorber according to claim 1 , wherein the resistive layer comprises at least one selected from the group consisting of silicon oxide claim 1 , magnesium oxide claim 1 , and zinc oxide.4. The radio wave absorber according to claim 1 , wherein the electrical conductor comprises indium tin oxide.5. The radio wave absorber according to claim 1 , wherein the electrical conductor comprises at least one selected ...

RADIO WAVE ABSORBER AND MANUFACTURING METHOD OF RADIO WAVE ABSORBER

Provided is a radio wave absorber including: a support; a first radio wave absorption layer having a flat plate shape that is disposed on a surface of the support and includes a radio wave absorption material and a binder; and second radio wave absorption layers that are erected on a surface of the first radio wave absorption layer, include a radio wave absorption material and a binder, and are conical protrusions having bottom surfaces of which outer peripheral portions are in contact with each other, in which a distance between apexes of the conical protrusions adjacent to each other is 0.5 mm to λmm, in a case where a wavelength of a radio wave to be absorbed is set as λmm, and a manufacturing method of a radio wave absorber. 1. A radio wave absorber comprising:a support;a first radio wave absorption layer having a flat plate shape that is disposed on a surface of the support and includes a radio wave absorption material and a binder; and{'sup': a', 'a, 'second radio wave absorption layers that are erected on a surface of the first radio wave absorption layer, include a radio wave absorption material and a binder, and are conical protrusions having bottom surfaces of which outer peripheral portions are in contact with each other, in which a distance between apexes of the conical protrusions adjacent to each other is 0.5 mm to λmm, in a case where a wavelength of a radio wave to be absorbed is set as λmm.'}2. The radio wave absorber according to claim 1 ,{'sup': a', 'a', 'a, 'wherein a height of the conical protrusion of the second radio wave absorption layer is 0.5λmm to 9λmm, in a case where a wavelength of a radio wave to be absorbed is set as λmm.'}3. The radio wave absorber according to claim 1 ,wherein the second radio wave absorption layer is formed of a single radio wave absorption layer formation composition including a radio wave absorption material and a binder.4. The radio wave absorber according to any one of claim 1 ,wherein the radio wave absorption ...

SYSTEM AND METHOD FOR THERMAL MANAGEMENT AND ELECTROMAGNETIC INTERFERENCE MANAGEMENT

A data processing device includes an internal volume for housing electromagnetic interference emitting devices. The data processing device further includes a first electromagnetic radiation absorbing vent. The data processing device further includes a second electromagnetic radiation absorbing vent. The first electromagnetic radiation absorbing vent and the second electromagnetic radiation absorbing vent delineate a gas flow path through the internal volume. 1. A data processing device , comprising:an internal volume for housing electromagnetic interference (EMI) emitting devices; andtwo electromagnetic radiation (EMR) absorbing vents that delineate a gas flow path through the internal volume.2. The data processing device of claim 1 , wherein the internal volume is adapted to suppress EMI transmission from within the internal volume to an ambient environment.3. The data processing device of claim 1 , wherein at least one of the two EMR absorbing vents comprises a reversibly deformable material.4. The data processing device of claim 3 , wherein the at least one of the two EMR absorbing vents comprises an EMR lossy material.5. The data processing device of claim 4 , wherein the EMR lossy material has an electrical loss tangent of greater than 0.1.6. The data processing device of claim 4 , wherein the EMR lossy material has a magnetic loss tangent of greater than 0.5.7. The data processing device of claim 1 , wherein a first EMR absorbing vent of the EMR absorbing vents comprises a plurality of gas flow paths.8. The data processing device of claim 7 , wherein the plurality of gas flow paths comprises hollow portions of a body that comprises an EMR lossy material.9. The data processing device of . wherein the plurality of gas flow paths is delineated by a gas flow pattern on a surface of the body.10. The data processing device of claim 7 , wherein a second EMR absorbing vent of the EMR absorbing vents comprises a second plurality of gas flow paths.11. The data ...

RADIO FREQUENCY SHEILDED CLOTHING

Clothing for shielding a person from radio frequency energy relating to an electronic device includes a garment adapted to be worn by the person that includes at least one pocket having an inner panel and an outer panel. The pocket is sized to bold the electronic device. The inner panel of the pocket includes an electrically conductive shield material. 1. Clothing for shielding a person from radio frequency energy relating to an electronic device comprising:a), a garment ;adapted to he worn by the person;b) said garment including at least one pocket having an inner panel and an outer panel, said pocket sized to hold the electronic device; andc) said inner panel of the pocket including a shield material.2. The clothing of wherein the pocket includes an opening claim 1 , and a portion of the shield material wraps around an edge of the opening.3. The clothing of wherein the outer panel also includes shield material.4. The clothing of wherein the shield material includes a metallic material.5. The clothing of wherein the shield material is electrically conductive.6. The clothing of wherein the shield material is a layer and further comprising a resistive layer that has a lower conductivity than the shield layer claim 1 , said resistive layer positioned between the shield layer and the person wearing the clothing.7. The clothing of wherein an edge of the shield is at least one of: frayed; formed with an irregular edge; or cut so that an edge is irregular.8. The clothing of wherein the shield material is lined with a cloth layer on at least one side.9. The clothing of wherein the electrically conductive shield material is sprayed onto the panel of the pocket.10. The clothing of wherein a density of the spray is a first non-zero value in a central area of the shield material and where the density of the spray is a second non-zero value in an area bordering the central area of the shield material claim 9 , where the second density value is less than the first density value. ...

DEVICE AND METHOD FOR SIGNATURE ADAPTATION AND AN OBJECT WITH SUCH A DEVICE

The invention pertains to a device for signature adaptation, comprising at least one surface element () arranged to assume a determined thermal distribution, wherein said surface element comprises at least one temperature generating element () arranged to generate at least one predetermined temperature gradient to a portion of said at least one surface element. Said surface element () comprising at least one display surface (), wherein said display surface () is arranged to radiate at least one predetermined spectrum. The invention also pertains to a method for signature adaptation and an object such as a craft provided with the device according to the invention. 1. A device for signature adaptation , comprising at least one surface element arranged to assume a determined thermal distribution , wherein said surface element comprises at least one temperature generating element arranged to generate at least one predetermined temperature gradient to a portion of said at least one surface element , wherein the device is characterized in that said at least one surface element comprises at least one display surface , wherein said at least one display surface is arranged to radiate at least one predetermined spectrum.2. Device according to claim 1 , wherein said at least one display surface has thermal permeability.3. Device according to claim 1 , wherein said at least one display surface is arranged to allow said at least one predetermined temperature gradient to be maintained in said at least one surface element.4. Device according to claim 1 , wherein said display surface is constituted by thin film.5. Device according to claim 1 , wherein said at least one display surface is of emitting type.6. Device according to claim 1 , wherein said at least one display surface is of a reflecting type.7. Device according to claim 1 , wherein said at least one display surface is arranged to radiate at least one predetermined spectrum that comprises at least one component within the ...

ARTIFICIAL MICROSTRUCTURE AND ARTIFICIAL ELECTROMAGNETIC MATERIAL USING THE SAME

The present invention provides an artificial microstructure. The artificial microstructure includes at least three split rings. The at least three split rings surround and embed in turn. Each split ring is formed by a wire which is made of conductive material, with two terminals of the wire towards each other to form an opening of the corresponding split ring. The present invention also provides an artificial electromagnetic material using the artificial microstructure. The artificial electromagnetic material with the artificial microstructure can achieve the function of broadband wave-absorbing. 1. An artificial microstructure used in artificial electromagnetic material , comprising a first line segment and a second line segment perpendicular to the first line segment , the first line segment and the second line segment intersecting with each other to form a cross-type structure.2. The artificial microstructure of claim 1 , wherein the artificial microstructure comprises a plurality of third segments claim 1 , distal ends of the first line segment and the second line segment are respectively connected to the third line segments.3. The artificial microstructure of claim 2 , wherein an distal end of the third line segment extends outward in a direction 45 degrees relative to the first line segment or the second line segment.4. The artificial microstructure of claim 2 , wherein the artificial microstructure comprises a line segment group claim 2 , the line segment group comprises a plurality of fourth line segments claim 2 , each of the third segments has a fourth line segment vertically connected to both ends thereof.5. The artificial microstructure of claim 4 , wherein the artificial microstructure comprises N line segment groups claim 4 , each line segment of the N segment group is connected to a distal end of the line segment of the N−1 line segment group claim 4 , and is perpendicular to the line segment of the N−1 segment group claim 4 , wherein N represents an ...

MXENE-BASED TERAHERTZ WAVE BROADBAND SUPER-STRONG ABSORBING FOAM

The present disclosure discloses an MXene-based terahertz wave broadband super-strong absorbing foam, and belongs to the technical field of electromagnetic functional materials. The MXene-based terahertz wave broadband super-strong absorbing foam includes a porous polymer foam and a MXene nanosheet attached onto the porous polymer foam, wherein the MXene nanosheet is attached onto the porous polymer foam in a coating form, a film forming form and a suspension form; the average pore diameter of the porous polymer foam ≥500 μm, the thickness of the porous polymer foam ≤10 mm, and the filling mass of the MXene nanosheet is less than 50% of the mass of the absorbing foam. 1. An MXene-based terahertz wave broadband super-strong absorbing foam , comprising a porous polymer foam and a MXene nanosheet attached onto the porous polymer foam , wherein the MXene nanosheet is attached onto the porous polymer foam in a coating form , a film forming form and a suspension form; the average pore diameter of the porous polymer foam ≥500 μm , the thickness of the porous polymer foam ≤10 mm , and the filling mass of the MXene nanosheet is less than 50% of the mass of the absorbing foam.2. The MXene-based terahertz wave broadband super-strong absorbing foam according to claim 1 , wherein the pore diameter of the porous polymer foam ranges from 300 μm-3 mm.3. The MXene-based terahertz wave broadband super-strong absorbing foam according to claim 1 , wherein the density of the porous polymer foam is 0.02-0.056 g cm claim 1 , and the porosity ≥85%.4. The MXene-based terahertz wave broadband super-strong absorbing foam according to claim 1 , wherein the porous polymer foam is a polyurethane sponge foam claim 1 , a polyimide foam claim 1 , or a polypropylene foam.5. The MXene-based terahertz wave broadband super-strong absorbing foam according to claim 1 , wherein the MXene nanosheet has a monolithic transverse length of 0.05-30 μm and a thickness of 3-20 nm.6. A method for preparing a MXene ...

Dipole-resonator resistive absorber

The dipole-resonator resistive absorber is a metamaterial absorber operating in the microwave regime. A single unit of the dipole-resonator resistive absorber includes a first rectangular conductive ring having a pair of first resistors mounted thereon and in electrical communication therewith, and a plurality of parallel linear arrays of second rectangular conductive rings, where each of the second rectangular conductive rings has a pair of second resistors mounted thereon and in electrical communication therewith. The first rectangular conductive ring is mounted above the plurality of parallel linear arrays of the second rectangular conductive rings, and this structure is backed by an electrically conductive layer. The single unit dipole-resonator resistive absorber may be expanded into an arrayed structure, forming a polarization-independent dipole-resonator resistive absorber.

PARASITIC ANTENNA ARRAYS INCORPORATING FRACTAL METAMATERIALS

Novel directional antennas are disclosed which utilize fractal plasmonic surfaces (FPS) that include or present an array of closely-spaced parasitic antennas, which may be referred to herein as “parasitic arrays” or fractal plasmonic arrays (FPAs). These fractal plasmonic surfaces represent improved parasitic directional antennas relative to prior techniques and apparatus. 1. A directional antenna system , the system comprising:a fractal plasmonic array having a plurality of close-packed fractal cells disposed on a supporting surface, wherein each fractal cell includes a fractal shape defining an electrical resonator, wherein the plurality of fractal cells are positioned sufficiently close to one another to support plasmonic transfer of energy between the fractal cells, and wherein the plurality of close packed cells are not galvanically connected to one another;wherein the supporting surface is shaped to provide directional transfer of electromagnetic energy to and from the fractal plasmonic array in desired directions, respectively.2. The system of claim 1 , further comprising a feed configured to supply the fractal plasmonic array with electromagnetic energy.3. The system of claim 1 , wherein the support surface has a longitudinal axis.4. The system of claim 3 , wherein the longitudinal axis is curved.5. The system of claim 4 , wherein the longitudinal axis defines an included angle.6. The system of claim 5 , wherein the included angle is between about π/4 and about 3π/4.7. The system of claim 5 , wherein the included angle is about π/2.8. The system of claim 1 , wherein the fractal plasmonic array supports the transfer of electromagnetic energy in the S-band.9. The system of claim 1 , wherein the fractal plasmonic array supports the transfer of electromagnetic energy in the X-band.10. The system of claim 1 , wherein the fractal plasmonic array supports the transfer of electromagnetic energy in the K-band.11. The system of claim 1 , wherein the fractal plasmonic ...

Radar absorbing material compatible with lightning protection systems

A wind turbine component incorporating radar-absorbing material having increased compatibility with lightning protection systems is described. The radar absorbing material includes a ground plane having an electrical conductivity and/or a dielectric constant that is higher in the presence of an electric field having a frequency of 1 GHz and above than in the presence of an electric field having a frequency of 10 MHz and below. Suitable materials for the ground plane include ferroelectric and ferrimagnetic materials and percolating material combinations, all of which have frequency-dependent properties that can be tuned to make the ground plane highly reflective at radar frequencies and benign at lightning discharge frequencies.

SYSTEM AND METHOD FOR RADIO FREQUENCY PENETRATION IMAGING OF AN OBJECT

A system and methods for RF (Radio Frequency) penetration imaging of one or more objects in a medium, the system comprising: a generation and reception unit configured to generate and receive RF signals; an antenna array configured to transmit/receive the RF signals, the antenna array comprises a plurality of antennas: and a processor in communication with said antenna array, said processor is configured to analyze said RF signals and estimate the distance between the antenna array and the object, and in addition the relative orientation between the antenna array and the medium surface. 1. A RF (Radio Frequency) imaging system , for imaging at least one object within a target medium , the system comprisinga generation and reception unit configured to generate and receive a plurality of RF signals;an RF antenna array, the RF antenna array comprises a plurality of antennas, said plurality of antennas are configured to transmit the plurality of RF signals towards the target medium and receive a plurality of RF signals reflected from the target medium;a data acquisition unit configured to receive and store said plurality of reflected RF signals; and estimate the distance between the surface of the target medium and the antenna array;', 'calculate the delay between the plurality of transmitted signals and the plurality of signals reflected from the at least one object;', 'estimate the location of the plurality of antennas at each transmitting time; and', 'provide an image of the at least one object location and the intensity of the plurality of reflected RF signals., 'at least one processor unit, said at least one processor unit is configured to2. The system of wherein said at least one processor is configured to analyze the angular orientation between the antenna array and the target medium surface3. The system of wherein the system comprises a display and wherein the image is displayed on said display4. The system of wherein an interim medium is located between the ...

Radio frequency shielded textiles

The invention is a method to modify textiles with a printing and lamination method to produce textile materials with integrated RF shielding. The shielding modifications are comprised of a network of interconnected surface patterns of periodic unit geometries organized in an arrangement to reflect RF waveforms over a range of frequencies below the 10 GHz; to shield the majority or incident RF radiation. Use of this invention enables permanent transfer of many RF shielding patterns on most textile materials for production of RF shielded consumer and industrial clothing as well as object and personal coverings.

TECHNIQUES FOR CONDUCTIVE PARTICLE BASED MATERIAL USED FOR AT LEAST ONE OF PROPAGATION, EMISSION AND ABSORPTION OF ELECTROMAGNETIC RADIATION

An antenna system and method for fabricating an antenna are provided. The antenna system includes a substrate and an antenna. The antenna includes a conductive particle based material applied onto the substrate. The conductive particle based material includes conductive particles and a binder. When the conductive particle based material is applied to the substrate, the conductive particles are dispersed in the binder so that at least a majority of the conductive particles are adjacent to, but do not touch, one another. 1a first element, disposed in a first layer, that is electrically coupled to at least a transmitter of the electronic device;a second element, disposed in a second layer, that is formed of a conductive particle based material; anda third element, disposed in a third layer, that is formed of a conductive material,wherein the first element, the second element, and the third element are disposed within the electronic device,wherein the first element and the third element are mechanically coupled via the second element,wherein the first layer, the second layer, and the third layer are parallel layers,wherein the first layer is adjacent to the second layer, and the third layer is adjacent to the second layer,wherein the second element is disposed between at least a portion of the first element and at least a portion of the third element,wherein the conductive particle based material comprises conductive particles dispersed in a binder so that at least a majority of the conductive particles are adjacent to, but do not touch, one another,wherein the binder is disposed between at least a part of the conductive particles that are adjacent to, but do not touch, one another, andwherein at least some of the conductive particles of the conductive particle based material that are adjacent to one another are at least one of capacitively or inductively coupled to one another.. Antenna circuitry for use in an electronic device, the antenna circuitry comprising: This ...

LOW PROFILE PHASED ARRAY

A low profile array (LPA) includes an antenna element array layer having at least one Faraday wall, and a beamformer circuit layer coupled to the antenna element array layer. The beamformer circuit layer has at least one Faraday wall. The Faraday walls extends between ground planes associated with at least one of the antenna element array layer and the beamformer circuit layer. 1. A method of fabricating a low profile array (LPA) , the method comprising:milling trenches in a portion of an array having antenna elements and filling the trenches with a conductive material using additive manufacturing processing to form Faraday wall; andmilling trenches in a beamformer substrate and filling the trenches with a conductive material using additive manufacturing processing to form Faraday walls.2. The method according to claim 1 , wherein the LPA has a total thickness of less than about 47 mils.3. The method according to claim 1 , wherein an antenna element array layer of the array has a substrate claim 1 , a conductor applied on the substrate claim 1 , and a radiator is formed by removing conductive material and printing a conductor to create the radiator claim 1 , the Faraday wall being created by forming a trench that is back-filled with a conductive material.4. The method according to claim 1 , further comprising providing a vertical launch that extends through the radiator of antenna element array layer and the beamformer circuit layer.5. The method according to claim 4 , wherein the vertical launch is created by soldering pads on the radiator and the beamformer circuit layer prior to bonding so a solder bump is present on the surface of the beamformer circuit claim 4 , drilling a center conductor hole claim 4 , and filling the center conductor hole with copper.6. The method according to claim 4 , wherein the LPA includes a logic circuit layer disposed below the beamformer circuit layer.7. The method according to claim 6 , wherein the LPA further includes a phase shift ...

IMPEDANCE MATCHING FILM FOR RADIO WAVE ABSORBER, IMPEDANCE MATCHING FILM-ATTACHED FILM FOR RADIO WAVE ABSORBER, RADIO WAVE ABSORBER, AND LAMINATE FOR RADIO WAVE ABSORBER

An impedance matching film includes a mixture containing indium oxide and tin oxide and being a main component of the impedance matching film, the mixture having an amorphous structure. The impedance matching film for impedance matching has a Hall mobility of 5 cm/(V·s) or more. The impedance matching film has a thickness of 16 nm or more and less than 100 nm. 1. An impedance matching film for a radio wave absorber , comprising:a mixture containing indium oxide and tin oxide and being a main component of the impedance matching film, the mixture having an amorphous structure, wherein{'sup': '2', 'the impedance matching film has a Hall mobility of 5 cm/(V·s) or more, and'}the impedance matching film has a thickness of 16 nm or more and less than 100 nm.2. The impedance matching film according to claim 1 , wherein the impedance matching film has a specific resistance of 0.5×10to 5.0×10Ω·cm.3. The impedance matching film according to claim 1 , wherein the impedance matching film has a sheet resistance of 200 to 800 Ω/□.4. The impedance matching film according to claim 1 , wherein a content of the tin oxide is 20 mass % or more.5. The impedance matching film according to claim 4 , wherein a content of the tin oxide is more than 40 mass %.6. The impedance matching film according to claim 1 , further comprising:an additive that comprises at least an atom different from an indium atom, a tin atom, and an oxygen atom.7. An impedance matching film-attached film for a radio wave absorber claim 1 , comprising:a substrate; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the impedance matching film according to .'}8. A radio wave absorber claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the impedance matching film according to ;'}an electrical conductor that reflects a radio wave; anda dielectric layer disposed between the impedance matching film and the electrical conductor in a thickness direction of the impedance matching film.9. The radio wave ...

Radiative Transfer and Power Control with Fractal Metamaterial and Plasmonics

Systems according to the present disclosure provide one or more surfaces that function as heat or power radiating surfaces for which at least a portion of the radiating surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges. 1. A radiation transfer system , comprising:one or more electrical resonator belts, each belt including a substrate having first and second surfaces and a fractal plasmonic surface (FPS) including a close-packed arrangement of electrically conductive material formed on the first surface, wherein the closed-packed arrangement comprises a plurality of self-similar fractal electrical resonator shapes and is configured to operate at a desired passband of electromagnetic radiation; andwherein the radiation transfer system is configured and arranged so that radiation received by the system at a first location on the FPS is transferred to a second location on the FPS.2. The system of claim 1 , wherein said passband is about 2:1.3. The system of claim 2 , wherein said passband is about 3:1.4. The system of claim 1 , wherein the one or more electrical resonator belts comprise two belts.5. The system of claim 4 , wherein the fractal electrical resonator shapes of the FPS of the first belt are different than the fractal electrical resonator shapes of the FPS of the second belt.6. The system of claim 1 , wherein the one ...

Synchronized Transmission on Shared Channel

Simultaneous transmission on a shared channel by a plurality of collocated radios is provided herein. The two or more radios are collocated with one another and are communicating with two far radios over a pair of long range wireless links. The two or more radios are configured to transmit and receive in synchronization with one another on a same channel. An off-axis response for each of the two or more radios is reduced compared to their on-axis response for improved signal to noise ratio, and the on-axis response the two or more radios are substantially equal to one another. 1. A system , comprising two or more radios collocated with one another , the two or more radios communicating with two far radios over a pair of long range wireless links , the two or more radios being configured to transmit and receive in synchronization with one another on a same channel , wherein an off-axis response for each of the two or more radios is reduced compared to their on-axis response for improved signal to noise ratio , further wherein the on-axis response the two or more radios are substantially equal to one another.2. The system according to claim 1 , wherein the two or more radios are time division duplex radios.3. The system according to claim 1 , wherein the off-axis response compared with the on-axis response is within a signal to noise ratio of approximately 6 dBm.4. The system according to claim 1 , wherein the two or more radios are synchronized by GPS modules in each of the two or more radios.5. The system according to claim 1 , wherein one of the two or more radios comprises a GPS module and the one radio is coupled to the other of the two or more radios with a wired link to share GPS information allowing the two or more radios to synchronize.6. The system according to claim 1 , wherein each of the two or more radios comprises a shroud that provides side lobe rejection to prevent signal overlap there between.7. The system according to claim 1 , wherein each of the ...

ELECTROMAGNETIC RADIATION ATTENUATOR

The invention relates to a material configured such as to include a plurality of layers, some layers being made of a composite material and some layers being made of a dielectric material. The layers of composite material include a mixture of host dielectric material and inclusions, such that said inclusions are embedded in the structure of the host dielectric material. Said inclusions preferably include highly conductive fibres, specifically metal microwires. Thus, the structure of the material according to the invention includes a plurality of layers, some layers being made of a composite material, which includes a host dielectric material with inclusions, and some layers being made of a dielectric material. The structure of the material according to the invention is designed so that the surface on which said material is applied is capable of absorbing a portion of the incident electromagnetic radiation, thus substantially reducing the electromagnetic radiation reflected by same curved. 11030202021202222203020102120102220102020223010030. Electromagnetic radiation attenuating material () , applicable over a surface () , comprising at least five layers () , such that at least one of the layers () is a layer () comprising a dielectric material and at least one of the layers () is a layer () comprising a composite material , the layer () of composite material comprising a dielectric host material and inclusions embedded in said dielectric host material , characterized in that the first layer () , located adjacent to the surface () , and the last layer () , used as a protective and finishing layer , in the material () are layers () of dielectric material , in that at least two of the inner layers () in the material () are layers () of composite material , in that the first and inner layers () in the material () are configured in such a way that the thickness and material composition of the first and inner layers () , together with the number and positioning order of ...

Wireless Communication Device with Integrated Ferrite Shield and Antenna, and Methods of Manufacturing the Same

A wireless communication device and methods of manufacturing and using the same are disclosed. The wireless communication device includes a substrate with an antenna and/or inductor thereon, a patterned ferrite layer overlapping the antenna and/or inductor, and a capacitor electrically connected to the antenna and/or inductor. The wireless communication device may further include an integrated circuit including a receiver configured to convert a first wireless signal to an electric signal and a transmitter configured to generate a second wireless signal, the antenna being configured to receive the first wireless signal and transmit or broadcast the second wireless signal. The patterned ferrite layer advantageously mitigates the deleterious effect of metal objects in proximity to a reader and/or transponder magnetically coupled to the antenna. 1. A wireless communication device , comprising:a) a substrate with an antenna and/or inductor thereon;b) a patterned ferrite layer overlapping said antenna; andc) a capacitor electrically connected to said antenna.2. The device of claim 1 , further comprising an integrated circuit.3. The device of claim 2 , wherein:a) the integrated circuit comprises a receiver configured to convert a first wireless signal to an electric signal and a transmitter configured to generate a second wireless signal; andb) the antenna and/or inductor comprises the antenna, which is configured to receive said first wireless signal and transmit or broadcast said second wireless signal.4. The device of claim 1 , wherein said substrate comprises a glass claim 1 , a glass/polymer laminate claim 1 , a high temperature polymer claim 1 , or a metal foil.5. The device of claim 4 , wherein said substrate is a flexible substrate.6. The device of claim 1 , wherein said antenna and/or inductor is on a first surface of the substrate claim 1 , and the patterned ferrite layer is on a second surface of the substrate.7. The device of claim 1 , wherein the patterned ...

Vehicular radar assembly

An assembly for a detection system for a vehicle in an environment has a radar sensor positioned around a central boresight axis. The radar sensor includes an RF board with at least one antenna and a support bracket configured to secure the detection system to the vehicle. The support bracket has sloped walls forming a radiation aperture between the RF board and the environment. The sloped walls have distal ends distal to the radar sensor. A plurality of sloped flaps extend from the distal ends and slope inwardly from the distal ends towards the boresight axis to intercept radiation within the radiation aperture.

RADIO WAVE ABSORBER

There is provided a radio wave absorber including a magnetic powder and a binder, in which a volume filling rate of the magnetic powder in the radio wave absorber is 35% by volume or less, a transmission attenuation amount is 8.0 dB or more, and a reflection attenuation amount is 8.0 dB or more. 1. A radio wave absorber comprising:a magnetic powder; anda binder,wherein a volume filling rate of the magnetic powder in the radio wave absorber is 35% by volume or less,a transmission attenuation amount is 8.0 dB or more,and a reflection attenuation amount is 8.0 dB or more.2. The radio wave absorber according to claim 1 ,wherein the volume filling rate of the magnetic powder is 15% by volume or more and 35% by volume or less.3. The radio wave absorber according to claim 1 ,wherein the radio wave absorber is a molded product obtained by molding a composition containing the magnetic powder and the binder.4. The radio wave absorber according to claim 1 ,wherein a thickness is 2.0 mm or more and 10.0 mm or less.5. The radio wave absorber according to claim 1 ,wherein the magnetic powder includes a powder of a hexagonal ferrite.6. The radio wave absorber according to claim 5 , {'br': None, 'sub': (12−x)', 'x', '19, 'A F eA IO\u2003\u2003Formula 1'}, 'wherein the hexagonal ferrite has a composition represented by Formula 1,'}in Formula 1, A represents at least one kind of atom selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.50≤x≤8.00.7. The radio wave absorber according to claim 6 ,wherein an atom represented by A in Formula 1 includes Sr.8. The radio wave absorber according to claim 1 ,wherein the magnetic powder includes a powder of ε-iron oxide.9. The radio wave absorber according to claim 8 ,wherein the ε-iron oxide is an ε-iron oxide containing one or more atoms selected from the group consisting of a gallium atom, a titanium atom, and a cobalt atom.10. The radio wave absorber according to claim 2 ,wherein the magnetic powder includes a powder ...

RADIO WAVE ABSORBER

There is provided a radio wave absorber including a magnetic powder and a binder, in which a volume filling rate of the magnetic powder in the radio wave absorber is 35% by volume or less, and a volume filling rate of a carbon component in the radio wave absorber is 0% by volume or more and 2.0% by volume or less. 1. A radio wave absorber comprising:a magnetic powder; anda binder,wherein a volume filling rate of the magnetic powder in the radio wave absorber is 35% by volume or less, anda volume filling rate of a carbon component in the radio wave absorber is 0% by volume or more and 2.0% by volume or less.2. The radio wave absorber according to claim 1 ,wherein the volume filling rate of the magnetic powder is 15% by volume or more and 35% by volume or less.3. The radio wave absorber according to claim 1 ,wherein the volume filling rate of the carbon component is 0% by volume or more and 1.5% by volume or less.4. The radio wave absorber according to claim 1 ,wherein the radio wave absorber is a molded product obtained by molding a composition containing the magnetic powder and the binder.5. The radio wave absorber according to claim 4 ,wherein the radio wave absorber is a plate-shaped molded product.6. The radio wave absorber according to claim 1 ,wherein the magnetic powder includes a powder of a hexagonal ferrite.7. The radio wave absorber according to claim 6 , {'br': None, 'sub': (12-x)', 'x', '19, 'AFeAlO\u2003\u2003Formula 1'}, 'wherein the hexagonal ferrite has a composition represented by Formula 1,'}in Formula 1, A represents at least one kind of atom selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.50≤x≤8.00.8. The radio wave absorber according to claim 7 ,wherein an atom represented by A in Formula 1 includes Sr.9. The radio wave absorber according to claim 1 ,wherein the magnetic powder includes a powder of ε-iron oxide.10. The radio wave absorber according to claim 9 ,wherein the ε-iron oxide is an ε-iron oxide containing one ...

ELECTROMAGNETIC ANECHOIC CHAMBER AND UNIFORM FIELD AREA TESTING APPARATUS

An electromagnetic anechoic chamber includes a chamber, an antenna mounted therein at a first end, a test bench mounted therein at a second end, and a uniform field area (UFA) testing apparatus. The UFA testing apparatus includes a supporting bar horizontally mounted, a sliding member on the supporting bar, a first driving mechanism to move the sliding member, an upright toothed rack movably supported by the sliding member, a second driving mechanism rotating a gear on the supporting bar to lift or drop the upright rack, and a field intensity probe mounted to a bottom end of the rack. The first driving mechanism and the second driving mechanism can position the field intensity probe at any planar point inside the chamber to avoid any manual repositioning of the field intensity probe during testing. 1. A uniform field area (UFA) testing apparatus , comprising:a supporting bar;a sliding member slidably fitted about the supporting bar;a first driving mechanism driving the sliding member to slide along the supporting bar;a rack slidably installed to the sliding member along a direction perpendicular to the supporting bar;a second driving mechanism driving the rack to slide relative to the sliding member; anda field intensity probe mounted to a bottom end of the rack.2. The UFA testing apparatus of claim 1 , wherein the supporting bar defines a slide slot extending through two opposite side surfaces of the supporting bar claim 1 , the rack is slidably received in the slide slot of the supporting bar.3. The UFA testing apparatus of claim 2 , wherein the sliding member comprises a sliding shell slidably fitted about the supporting bar claim 2 , the sliding shell defines two opposite guiding holes aligning with the slide slot of the supporting bar claim 2 , the rack is slidably received in the guiding holes of the sliding shell.4. The UFA testing apparatus of claim 3 , wherein the sliding shell comprises four sliding plates connected end to end through four angle irons ...

New wireless communication paradigm: realizing programmable wireless environments through software-controlled metasurfaces

A system for controlling an interaction of a surface with an impinging electromagnetic wave is provided. The system comprises a surface comprising a plurality of controllable elements, wherein each of the controllable elements is configured to adjust its electromagnetic behavior based on a control signal received by the controllable element, a sensing unit configured to detect a state of an environment of the surface and/or one or more wave attributes of an electromagnetic wave impinging on the surface, a control unit configured to determine, based on the detected state of the environment and/or the one or more wave attributes, a control state of the controllable elements, in which the electromagnetic behavior of the controllable elements is adjusted such that the surface interacts with the impinging electromagnetic wave in a predefined manner, and an adjusting unit configured to determine.

Radio wave absorber

There is provided a radio wave absorber including a powder of a hexagonal ferrite; and a binder, in which the radio wave absorber has a squareness ratio in a range of 0.40 to 0.60.

ELECTROMAGNETIC FIELD CONFINEMENT

The present application invention relates to the control of electromagnetic fields. It has particular relevance to magnetic flux coupling apparatus such as inductive power transfer pads for wireless power transfer systems. There is provided a magnetic flux coupling apparatus comprising a coil for generating or receiving magnetic coupling flux and a leakage flux element comprising material of a relatively high magnetic permeability. The leakage flux element is separated from the coil by a region of relatively low magnetic permeability and positioned to provide a controlled path for leakage flux independent of coupling flux. There is provided an electromagnetic wave absorber comprising a high permeability magnetic material arranged in a first layer; and a conductive or low permeability material arranged in a second layer. 1. A magnetic flux coupling apparatus comprising:a coil for generating or receiving magnetic coupling flux; anda leakage flux element comprising material of a relatively high magnetic permeability;wherein the leakage flux element is separated from the coil by a region of relatively low magnetic permeability and positioned to provide a controlled path for leakage flux independent of coupling flux.2. The magnetic flux coupling as claimed in wherein the region of relatively low magnetic permeability comprises a space between the coil and the leakage flux element.3. The magnetic flux coupling as claimed in wherein the leakage element is constructed or positioned to substantially prevent magnetic saturation in use.4. The magnetic flux coupling as claimed in wherein the leakage flux element provides a path to return leakage flux to the coil.5. The magnetic flux coupling as claimed in wherein the leakage flux element comprises a plurality of discrete pieces of material having a relatively high magnetic permeability.6. The magnetic flux coupling as claimed in wherein the pieces of material may be joined together claim 5 , or may be placed adjacent to each ...

WIND TURBINE HAVING A REDUCED RADAR CROSS SECTION

A wind turbine including a support structure and one or more turbine blades is presented, that incorporates ways for reducing the radar cross section (RCS), wherein the support structure is notionally divided into an upper section in the shadow of the blade sweep area, and a lower section beneath the upper section, wherein the upper section is adapted to have the ways for reducing the RCS, and the lower section does not have the adaptation. The invention makes use of the realisation that the blade masking the tower as it rotates (or the blade being masked by the tower if facing away from a radar), contributes significantly to interference to radar systems, and so localised application of e.g. RAM can give good RCS reduction at a lower cost than treating the whole structure. 116-. (canceled)17. A wind turbine comprising:a support structure; andone or more turbine blades, each of the one or more turbine blades having a tip at an end thereof, the tip being at a lowest point when the turbine blade reaches its nadir upon aligning with the support structure,wherein the support structure is notionally divided, by the lowest point of the tip of a turbine blade of the one or more turbine blades, into an upper section and a lower section, the upper section including a part of the support structure that overlaps with the turbine blades' sweep area, and the lower section being a remaining part of the support structure below the upper section, wherein a portion spanning from approximately 20° to less than 180° of a circumference of certain cross-sections of the upper section is adapted to have a reduced radar cross section (RCS).18. The wind turbine as claimed in claim 17 , wherein the portion of the upper section is covered with radiation absorbent material (RAM) and substantially none of the length of the lower section has a reduced cross section (RCS).19. The wind turbine as claimed in claim 18 , wherein the RAM is adapted to be absorbent at wavelengths transmitted by an ...

Broadband wire antenna with resistive patterns having variable resistance

The invention relates to a wire antenna adapted to operate in at least one predetermined frequency band, comprising a plurality of superimposed layers, comprising at least one radiating element placed on a support layer, wherein the support layer is placed on a spacer substrate, and wherein the spacer substrate is placed on a reflector plane comprising at least one resistive layer between the support layer of the radiating element(s) and the substrate spacer, while the resistive layer comprises at least two sets of nested resistive patterns. This antenna is such that the sets of resistive patterns have resistance values gradually varying between a central antenna point and an outer edge of the antenna, in order to achieve a resistance gradient.

RADAR STANDING WAVE DAMPNENING COMPONENTS AND SYSTEMS

Radar standing wave dampening systems and components are described. In particular, systems and components including an absorber composite including at least one of ceramic filler, magnetic filler, or conductive filler materials are described. Such components can reduce the intensity of standing waves and may also be combined in systems with one or more gradient permittivity tapes or films. 1. A radar standing wave dampening system , comprising:a mount including a printed circuit board;a radio wave generating unit disposed on the mount;a radio wave sensing unit disposed on the mount;a non-target interface at a fixed distance from the radio wave generating unit,wherein the non-target interface has a relative permittivity for the frequency range of the radio waves greater than 1;wherein printed circuit board is a multilayer stack, and at least one layer includes an absorber composite including at least one of ceramic filler, magnetic filler, or conductive filler materials.2. The radar standing wave dampening system of claim 1 , wherein the at least one of ceramic filler claim 1 , conductive filler claim 1 , or magnetic filler materials are disposed within a polymeric matrix.3. The radar standing wave dampening system of claim 2 , wherein the polymeric matrix forms a film and is adhered to the printed circuit board.4. The radar standing wave dampening system of claim 1 , wherein the absorber composite includes ceramic filler materials and the ceramic filler materials include at least one of cupric oxide or titanium(II) oxide.5. The radar standing wave dampening system of claim 1 , wherein the absorber composite includes conductive filler materials and the conductive filler materials include at least one of carbon black claim 1 , carbon bubbles claim 1 , carbon foam claim 1 , graphene claim 1 , carbon fiber claim 1 , graphite claim 1 , carbon nanotubes claim 1 , metal particles claim 1 , metal nanoparticles claim 1 , metal alloy particles claim 1 , metal nanowires claim ...

FREE SPACE ABSORBER

The free space absorber based on an absorbent material containing conductive dipoles dispersing EM waves, includes a conductive substrate reflecting EM waves and a conductive grid located on the surface of the absorber. 1. A free space absorber , comprising:a conductive substrate reflecting EM waves and being based on an absorbent material containing conductive dipoles dispersing EM waves; anda conductive grid located on a surface of the substrate.2. The absorber according to claim 1 , wherein said absorbent material is comprised of at least one of group consisting of: a dielectric material claim 1 , a magnetic material claim 1 , and a magnetic dielectric material.3. The absorber according to claim 1 , wherein the substrate reflecting EM waves is shaped as one of a group consisting of: planar and regular spatial structures.4. The absorber according to claim 1 , wherein said conductive dipoles are comprised of at least one of a group consisting of: metallic and non-metallic antennas dispersing EM waves.5. The absorber according to claim 1 , wherein said conductive grid is metallic or non-metallic.6. The absorber according to claim 1 , wherein said conductive grid has a two-dimensional or three-dimensional structure.7. The absorber according to claim 1 , wherein said conductive grid is placed on the surface of the absorbent material.8. The absorber according to a claim 1 , wherein said conductive dipoles are distributed stochastically or non-stochastically in the absorbent material.9. The absorber according to claim 1 , wherein said conductive dipoles have equal or unequal dimensions and shapes.10. The absorber according to claim 1 , further comprising: a layer of dielectric material located on an underside of the absorbent material.11. The absorber according to claim 10 , wherein said layer of dielectric material contains the conductive dipoles dispersing EM waves.12. The absorber according to claim 10 , wherein said conductive dipoles dispersing EM waves contained ...

DISTORTIONLESS ANTENNA DESIGN AND METHOD

An antenna that radiates non-dispersive and time-aligned wave-fronts at all angles of radiation (in a half space). The antenna consists of a source radiator enclosed within a metallic shield with an aperture opening to couple plane waves radiated by the source through the aperture. Pulse dispersion is eliminated by having a truly planar aperture, resulting in an abrupt radiation zone, and the aperture field distribution being uniform. Wave-front alignment is caused by the continuity of the coupled electric field lines of force onto the metallic shield to result in radiated spherical waves. The antenna transfer function is impulse-like for all angles of radiation, thus it can be considered a distortion-less antenna. 1. An antenna , comprising:a source radiator for generating radiated radio waves;a metallic shield having a front surface facing away from the source radiator and defining a circular aperture having a diameter equivalent to or smaller than a highest frequency wavelength of the radiated wave, the aperture defining an axis generally aligned with the source radiator and the aperture spaced from the source radiator in a direction aligned with the axis, and the size of the front surface as projected onto a plane perpendicular to the axis being equivalent to or larger than a lowest frequency wavelength of the radiated wave; andmicrowave absorbers lining at least a portion of a surface of the metallic shield.2. The antenna of in which the front surface is planar.3. The antenna of in which apart from the aperture the metallic shield fully encloses the source radiating antenna.4. The antenna of in which the source radiating antenna has a boresight direction aligned with the axis.5. The antenna of in which the spacing of the aperture from the source antenna in the direction aligned with the axis is greater than or equal to a far field distance claim 1 , where the far field distance is a Fraunhofer distance of the source antenna claim 1 , and where the Fraunhofer ...

WAVE ABSORBER

An object of the present invention is to provide a radio wave absorber that has excellent radio wave absorption against oblique incidence, particularly against oblique incidence of radio waves at around 60 GHz. The object can be achieved by a radio wave absorber that has an absorption range with absorption performance of 15 dB or more within the frequency band of 55 to 65 GHz of 4 GHz or more in a circular polarization measurement at 45° incidence.

WAVE ABSORBER

An object of the present invention is to provide a radio wave absorber having excellent radio wave absorption against oblique incidence, particularly against oblique incidence of radio waves at around 79 GHz. The object can be achieved by a radio wave absorber having characteristic A: an absorption range with absorption performance of 15 dB or more within the frequency band of 75 to 85 GHz of 4 GHz or more in a TM polarization measurement at 45° incidence and/or characteristic B: an absorption range with absorption performance of 15 dB or more within the frequency band of 75 to 85 GHz of 4 GHz or more in a TB polarization measurement at 45° incidence.

Radio Antenna Positioning

A method () for positioning a first and a second radio antenna comprising the steps of configuring (SI) the first antenna to have a main lobe L and configuring () the second antenna to be a directive antenna having a main lobe L. The method also comprising the steps of transmitting (S) a first alignment signal from the first antenna to the second antenna and positioning (S) the second antenna based on the received first alignment signal, as well as reconfiguring (S) the first antenna to be a directive antenna having an antenna main lobe L, the antenna main lobe L having a more narrow main lobe width than the antenna main lobe L. The method provides a systematic approach to finding optimum antenna positions and corresponding main lobe directions which is especially suited for aligning directive radio antennas in NLOS communication scenarios. 127-. (canceled)28. A method for positioning a first and a second radio antenna , the method comprising:{'b': '1', 'configuring the first antenna to have an antenna main lobe L;'}{'b': '2', 'configuring the second antenna to be a directive antenna having an antenna main lobe L;'}transmitting a first alignment signal from the first antenna to the second antenna;positioning the second antenna based on the received first alignment signal;{'b': 3', '3', '1, 're-configuring the first antenna to be a directive antenna having an antenna main lobe L, the antenna main lobe L having a more narrow main lobe width than the antenna main lobe L.'}29. The method of claim 28 , further comprising:transmitting a second alignment signal from the second antenna to the first antenna;positioning the first antenna based on the received second alignment signal.30. The method of :wherein the positioning the second antenna comprises aligning the second antenna with respect to the first alignment signal; andwherein the positioning the first antenna comprises aligning the first antenna with respect to the second alignment signal.31. The method of claim 29 , ...

ANTENNA APPARATUS

An antenna apparatus has a dielectric substrate and conductors. The antenna apparatus includes an antenna element which is arranged on a main surface of the dielectric substrate and has directivity ahead of the main surface, and a directional characteristic control member which includes a sidewall part which projects ahead of the main surface on at least one side of directivity of the antenna element with respect to the antenna element, and a roof part which projects in a direction of the antenna element from the sidewall part at a predetermined angle of more than 70° and less than 120° with respect to the sidewall part so that orthogonal projection to the main surface does not reach the antenna element, to reflect or absorb radio waves. 1. An antenna apparatus which has a dielectric substrate and conductors , characterized in that the antenna apparatus comprises:an antenna element which is arranged on a main surface of the dielectric substrate and has directivity ahead of the main surface, anda directional characteristic control member which includes a sidewall part which projects ahead of the main surface on at least one side of directivity of the antenna element with respect to the antenna element, and a roof part which projects in a direction of the antenna element from the sidewall part at a predetermined angle of more than 70° and less than 120° with respect to the sidewall part so that orthogonal projection to the main surface does not reach the antenna element, to reflect or absorb radio waves.2. The antenna apparatus according to claim 1 , characterized in that the predetermined angle is 75° or more and 115° or less.3. The antenna apparatus according to claim 2 , characterized in that the predetermined angle is 108° or more and 112° or less.4. The antenna apparatus according to any one of to claim 2 , characterized in that the directional characteristic control member reduce sidelobes of the antenna element.5. The antenna apparatus according to any one of ...

ELECTROMAGNETIC WAVE ABSORBER

An electromagnetic wave absorber contains cement and carbon nanotubes and has an absolute value of a complex relative permittivity in a range of from 2.0 to 10.0 in a frequency range of from 1 to 110 GHz and a minimum value of a dissipation factor of 0.35 or greater in the frequency range of from 1 to 110 GHz. 1. An electromagnetic wave absorber comprising cement and carbon nanotubes and having an absolute value of a complex relative permittivity in a range of from 2.0 to 10.0 in a frequency range of from 1 to 110 GHz and a minimum value of a dissipation factor of 0.35 or greater in the frequency range of from 1 to 110 GHz.2. The electromagnetic wave absorber according to claim 1 , wherein an amount of the carbon nanotubes is from 2% to 10% by mass relative to a total mass of the absorber.3. The electromagnetic wave absorber according to claim 1 , wherein the carbon nanotubes each have a length of from 1 to 20 μm.4. The electromagnetic wave absorber according to claim 2 , wherein the carbon nanotubes each have a length of from 1 to 20 μm. This invention relates to an electromagnetic wave absorber particularly for an anechoic chamber for microwaves and millimeter wavesElectromagnetic waves of various frequencies are emitted in an environment having many electromagnetic radiation sources, such as electronic equipment and communication equipment. It has been pointed out that the electromagnetic radiation from such equipment can cause neighboring devices to malfunction or the equipment itself can be caused to malfunction by any extraneous electromagnetic wave. Therefore, these types of equipment are required to have electromagnetic compatibility (hereinafter “EMC”) from the design and development phase.With the advent of ubiquitous era, electronic equipment and communication equipment using microwaves and millimeter waves are increasing, and use of low-frequency bands has been being shifted to use of high-frequency bands. Examples of equipment using a high frequency ...

ELECTROMAGNETIC WAVE ABSORBER

An electromagnetic wave absorber includes a rectangular plate-shaped part having a surface including a flat space at a center of the plate-shaped part and a plurality of oblong rectangular spaces, surrounding the flat space, on each of which at least one pyramidal or wedge-shaped part having an oblong rectangular bottom face is provided, and the plurality of oblong rectangular spaces of the surface of the plate-shaped part are arranged along inside a perimeter of the plate-shaped part so that a longer side of any one of the plurality of oblong rectangular spaces is adjoining with a shorter side of another of the plurality of oblong rectangular spaces adjacent thereto while leaving the flat space at the center of the plate-shaped part. 1. An electromagnetic wave absorber comprising a rectangular plate-shaped part having a surface comprising a flat space at a center of the plate-shaped part and a plurality of oblong rectangular spaces , surrounding the flat space , on each of which at least one pyramidal or wedge-shaped part having an oblong rectangular bottom face is provided ,wherein the plurality of oblong rectangular spaces of the surface of the plate-shaped part are arranged along inside a perimeter of the plate-shaped part so that a longer side of any one of the plurality of oblong rectangular spaces is adjoining with a shorter side of another of the plurality of oblong rectangular spaces adjacent thereto while leaving the flat space at the center of the plate-shaped part.2. The electromagnetic wave absorber according to claim 1 , comprising a plurality of pyramidal or wedge-shaped parts claim 1 , on the rectangular plate-shaped part claim 1 , each having an oblong rectangular bottom face arranged along inside the perimeter of the plate-shaped part with a longer side of the oblong rectangular bottom face of any one of the pyramidal or wedge-shaped parts adjoining with a shorter side of the oblong rectangular bottom face of another of the pyramidal or wedge- ...

RADIATION ATTENUATING CLOTHING

A pocket structure for a garment for a body of a wearer to reflect radio frequency radiation from a radiating device positioned therein. The pocket structure includes a first wall of fabric and a second wall of fabric, the first and second walls of fabric being attached along a major portion of their respective peripheral edges and forming an opening on a minor portion of their respective peripheral edges. The opening and the first and second walls of fabric forming an expandable compartment, each of the first wall of fabric and the second wall of fabric having an inner side facing the expandable compartment and an outer side, the opening being attached to the garment so as to position the second wall of fabric closer to the body of the wearer. The pocket structure further includes an electrically conductive material associated with the inner side of the second wall of fabric. 1. A pocket structure for a garment for a body of a wearer to reflect radio frequency radiation from a radiating device positioned in the pocket structure , the pocket structure comprising:a first wall of fabric and a second wall of fabric, the first and second walls of fabric being attached along a major portion of their respective peripheral edges and forming an opening on a minor portion of their respective peripheral edges, the opening and the first and second walls of fabric forming an expandable compartment, each of the first wall of fabric and the second wall of fabric having an inner side facing the expandable compartment and an outer side, the opening being attached to the garment so as to position the second wall of fabric closer to the body of the wearer; andan electrically conductive material associated with the inner side of the second wall of fabric, the electrically conductive material for reflecting the radio frequency radiation from the radiating device away from the body of the wearer when the radiating device is positioned within the expandable compartment of the pocket ...

High Power Microwave Weapon System

This invention allows combining broadband GW(Watt), peak power to achieve MV/m(Volt/meter), and GV/m(Volt/meter), radiated E-fields, in the range of air or vacuum breakdown in the entire electromagnetic spectrum, including optical frequencies and beyond. Use of many antennas and independently triggered generators allows achieving GV/m field, while by preventing the E-field induced breakdown it provides control of peak power and energy content at targets. The achieved broadband MV/m E-field levels and energy density significantly exceed levels required for destruction of distant electronic targets; therefore this invention radically improves the effectiveness of the electromagnetic weapons. Furthermore, collimating multiplicity of MV/m beams allows reaching GV/m E-field that exceeds by orders of magnitude the air or vacuum breakdown needed for broadband plasma excitation at resonance plasma frequencies in the 300 GHz range, permitting energy efficient plasma research leading to fusion. 1. A method for damaging at least one target by coupled electromagnetic radiation directed and transmitted to an at least one target from a microwave weapon system producing electromagnetic power and energy comprising:producing electromagnetic power and energy as a plurality of independently triggered and broadband pulses from an array of HPM TEM-horns, each HPM TEM-horn powered by at least one generator, and transmitting to a Cassegrain antenna;using the Cassegrain antenna powered by the array of HPM TEM-horns illuminating an entire secondary reflector of the Cassegrain antenna, that after reflection from the secondary reflector illuminates a primary reflector converting all the conical beams into a single non-diverging beam toward the at least one target;limiting a primary generator pulse interval duration T to a maximum duration of approximately 1 nanosecond and facilitating a maximum diameter limit of the Cassegrain primary reflector to approximately 9 meters;increasing radiated ...

Device for a vehicle

A device for a vehicle, which is attached to a vehicle, in particular, a commercial vehicle, and in which at least one or multiple surroundings sensor(s) is/are attached, a housing wall of the device being made from a material pervious to sensor radiation, and at least one housing wall of the device being made from a material absorbing sensor radiation.

Wideband Electromagnetic Cloaking Systems

Arrangement of resonators in an aperiodic configurations are described, which can be used for electromagnetic cloaking of objects. The overall assembly of resonators, as structures, do not all repeat periodically and at least some of the resonators are spaced such that their phase centers are separated by more than a wavelength. The arrangements can include resonators of several different sizes and/or geometries arranged so that each size or geometry corresponds to a moderate or high “Q” response that resonates within a specific frequency range, and that arrangement within that specific grouping of akin elements is periodic in the overall structure. The relative spacing and arrangement of groupings can be defined by self similarity and origin symmetry. Fractal based scatters are described. Further described are bondary condition layer structures that can activate and deactive cloaking/lensing structures. 1. An electromagnetic cloak system , comprising:a plurality of concentric electrical resonator shells, each shell including a substrate having first and second surfaces and a close-packed arrangement of electrically conductive material formed on the first surface, wherein the closed-packed arrangement comprises a plurality of self-similar electrical resonator shapes and is configured to operate at a desired passband of electromagnetic radiation;wherein the close-packed arrangements of at least two concentric electrical resonator shells are different in size and/or shape;wherein an innermost resonator shell forms a boundary condition layer (BCL) defining an inner volume;wherein the plurality of concentric electrical resonator shells are operative to produce a diverting effect to divert incident electromagnetic radiation in the desired passband around the inner volume defined by the BCL;wherein the BCL has a changeable structure and is configured and arranged to activate or deactivate the diverting effect in response to a switch.2. The system of claim 1 , wherein said ...

Artificial skin and human phantom for use in active millimeter wave imaging systems

The present disclosure is directed to an artificial skin including: a radar absorbing layer; a conductive layer comprising at least one material selected from the group consisting of a semiconductive oxide deposited onto a substrate and an electrically conductive polymer, wherein the substrate is in contact with the radar absorbing layer, and wherein the artificial skin has a reflection coefficient substantially equal to a human skin reflection coefficient, the human skin reflection coefficient being determined at an electromagnetic radiation frequency ranging from 1-500 GHz. A human phantom composed of the artificial skin and methods of using the human phantom are also disclosed.

Variable beam width antenna systems

A microwave antenna is operated in a first operating state during an alignment operation for the microwave antenna system where the microwave antenna is configured to have a first beam width. Subsequent to the alignment operation, the microwave antenna is operated in a second operating state where the beam of the microwave antenna is configured to have a second beam width that is narrower than the first beam width.

SYSTEM AND METHOD FOR RADIO FREQUENCY PENETRATION IMAGING OF AN OBJECT

A system and methods for RF (Radio Frequency) penetration imaging of one or more objects in a medium, the system including a generation and reception subsystem configured to generate and receive a plurality of RF signals, an RF antenna array including a plurality of antennas, the antennas being configured to transmit the RF signals towards the medium and receive a plurality of RF signals reflected from the medium, a data acquisition subsystem configured to receive and store the reflected RF signals, and a processor configured to estimate the distance between the surface of the target medium and the antenna array, the delay between the transmitted signals and the plurality of signals reflected from the object using a dedicated frequency sub-band of the received signals, the location of the antennas at each transmitting time, and determine whether there is an object within the medium. 1. A method for determining whether there is at least one object within a target medium , the method comprising:transmitting a plurality of RF signals by a radio frequency (RF) antenna array to the target medium, wherein said RF antenna array comprises a plurality of RF antennas;receiving a plurality of reflected RF signals from the target medium;combining coherently the reflected RF signals by compensating for the occurred propagation delays within the target medium;estimating the propagation delays, wherein the delays are estimated from a subset of received RF signals; anddetermining based on said estimation whether there is at least one object within the target medium.2. The method of claim 1 , wherein the delay is estimated using a dedicated frequency sub-band of the reflected RF signals.3. The method of claim 1 , comprising providing an image of the at least one object location.4. The method of claim 3 , wherein the image is a two dimensional (2D) or a three dimensional (3D) image.5. The method of comprising providing the intensity of the reflected RF signal of the at least one ...

BOUNDARY RADIATION PREVENTION STRUCTURE AND ELECTRONIC CABINET AND ELECTRONIC WORKING PLATFORM USING THE BOUNDARY RADIATION PREVENTION STRUCTURE

The invention provides a boundary radiation prevention structure, comprising: a metal portion, and a guide portion. The metal portion has an incident plane adapted to block an incident electromagnetic wave, wherein the incident electromagnetic wave induces an induced current on the incident plane. The guide portion is located on one border of the incident plane and has a curved surface electrically connected to the metal portion for the induced current to pass through, wherein the curved surface is covered by an absorption layer for absorbing the incident electromagnetic wave and a boundary radiation generated from the induced current radiation. 1. A boundary radiation prevention structure , comprising:a metal portion, which has an incident plane adapted to block an incident electromagnetic wave from penetrating, wherein the incident electromagnetic wave induces an induced current on the incident plane; anda guide portion, which is located on one border of the incident plane and has a curved surface electrically connected to the metal portion thr the induced current to pass through, wherein the curved surface is covered by an absorption layer for absorbing the incident electromagnetic wave and a boundary radiation generated from the induced current radiation.2. The boundary radiation prevention structure of claim 1 , wherein the absorption layer is composed of a coating material.3. The boundary radiation prevention structure of claim 1 , wherein the absorption layer is composed of a composite material or a polymeric material.4. The boundary radiation prevention structure of claim 1 , wherein the absorption layer is surrounded by a protective sleeve.5. The boundary radiation prevention structure of claim 1 , wherein the absorption layer has an extended portion extending and covering from the curved surface to the incident plane.6. An electronic cabinet with a boundary radiation prevention structure for placing at least one object attached with an electronic tag claim ...

METHOD FOR INTEGRATING A "NETWORK" ANTENNA INTO A DIFFERENT ELECTROMAGNETIC MEDIUM, AND ASSOCIATED ANTENNA

An array antenna (A) in a medium (M) comprises a plurality of radiating elements (ER) ensuring the transition between the antenna and the medium, the reflectivity of each element depending on a parameter, the reflectivity of a first element being close to that of the medium, the reflectivity of a last element being close to that of the antenna, the reflectivity parameter of the elements varying from one element to the next. A method comprises calculation of a path equal to the sum of the variations of the reflectivity from one element to the next element, optimization of the variation of the reflectivity parameter so that equivalent radar cross-section of the antenna is the lowest possible or the antenna best observes the radiation objectives, determination of the different elements as a function of said parameter, and simulation of the overall reflectivity and/or of the radiation of the antenna. 1. A method for incorporating an array antenna (A) in a medium (M) , said antenna comprising a plurality of radiating elements (ER) ensuring the transition between the antenna and the medium , the reflectivity of each radiating element depending on at least one parameter , the reflectivity being represented by a complex number , the reflectivity of a first element being equal or close to that of the antenna , the reflectivity of a last radiating element being equal or close to that of the medium , the reflectivity parameter of the radiating elements included between this first radiating element and this last radiating element varying from one radiating element to the next , characterized in that the method comprises the following steps:{'b': '1', 'Step : calculation of a path represented in the complex plane and equal to the sum of the variations of the reflectivity from one radiating element to the next radiating element;'}{'b': '2', 'Step : optimization of the variation of the reflectivity parameter so that the equivalent radar cross-section of the antenna is the lowest ...

METAL PATTERN ON ELECTROMAGNETIC ABSORBER STRUCTURE

A metal pattern formed in the electromagnetic absorber structure is provided. By performing the laser treatment to form the active layer thereon, the metal pattern can be regionally formed on the electromagnetic absorber structure in the following electroless plating processes. 1. An electromagnetic absorber structure having a metal pattern , the electromagnetic absorber structure comprising:an electromagnetic absorber layer disposed in the electromagnetic absorber structure;at least an insulative layer covering the surface of the electromagnetic absorber layer, wherein the electromagnetic absorber structure has at least a predetermined region, and the surface of the electromagnetic absorber layer overlapping with the predetermined region is not covered by the insulative covering layer; anda metal pattern located within the predetermined region and on the surface of the electromagnetic absorber layer of the electromagnetic absorber structure.2. The electromagnetic absorber structure according to claim 1 , wherein the insulative layer is a stack of a polyethylene terephthalate layer and an adhesive layer.3. The electromagnetic absorber structure according to claim 1 , wherein the material of the electromagnetic absorber layer is manganese-zinc ferrite or nickel-zinc ferrite.4. The electromagnetic absorber structure according to claim 3 , wherein the metal pattern further comprises an antenna structure.5. The electromagnetic absorber structure according to claim 4 , wherein the material of the antenna structure comprises copper claim 4 , nickel claim 4 , gold claim 4 , silver or the combinations thereof.6. The electromagnetic absorber structure according to claim 4 , wherein the metal pattern comprises at least a contact pad or a metal thorough hole.7. The electromagnetic absorber structure according to claim 6 , wherein the contact pad is a copper pad covered by a nickel layer and a gold layer.8. An electromagnetic absorber structure having a metal pattern claim 6 , ...

COMPOSITE STRUCTURE FOR CONTROLLING ABSORPTIVITY OF RADAR AND EMISSIVITY OF INFRARED REGIONS

A technique of adjusting absorptivity of radar waves and emissivity of infrared waves by controlling the waves of the radar and infrared regions using a structure formed of a meta-material. A composite structure for controlling absorptivity and emissivity includes: a first anti-detection unit; and a second anti-detection unit stacked on the first anti-detection unit, wherein the first anti-detection unit is an absorber for absorbing electromagnetic waves of a first range input from an outside of the first anti-detection unit, and the second anti-detection unit is a selective emitter for selectively blocking emission of electromagnetic waves of a second range and selectively allowing emission of electromagnetic waves of a third range among electromagnetic waves that can be emitted to an outside of the second anti-detection unit. 1. A composite structure for controlling absorptivity and emissivity , the structure comprising:a first anti-detection unit; anda second anti-detection unit stacked on the first anti-detection unit, whereinthe first anti-detection unit is an absorber for absorbing electromagnetic waves of a first range input from an outside of the first anti-detection unit, and the second anti-detection unit is a selective emitter for selectively blocking emission of electromagnetic waves of a second range and selectively allowing emission of electromagnetic waves of a third range among electromagnetic waves that can be emitted to an outside of the second anti-detection unit.2. The structure according to claim 1 , wherein the first anti-detection unit is an anti-detection unit for absorbing electromagnetic waves of a radar region claim 1 , and the second anti-detection unit is an anti-detection unit for selectively emitting electromagnetic waves of an infrared region.3. The structure according to claim 1 , wherein the electromagnetic waves of the third range are waves having a continuous wavelength corresponding to part of a wavelength of a several to several ...

PCB Integrated Waveguide Terminations and Load

The present application discloses embodiments that relate to a radar system. The embodiments may include a plurality of radiating waveguides each having a waveguide input. The embodiments also include an attenuation component, which can be located on a circuit board. The embodiments further include a beamforming network. The beamforming network includes a beamforming network input. The beamforming network also includes a plurality of beamforming network outputs, where each beamforming network output is coupled to one of the waveguide inputs. Additionally, the beamforming network includes an attenuation port, wherein the attenuation port is configured to couple the beamforming network to the attenuation component. The attenuation component dissipates received electromagnetic energy. 1. A radar system comprising:at least one attenuation component, wherein the at least one attenuation component is disposed on a circuit board and wherein the attenuation component is configured to dissipate electromagnetic energy;at least one attenuation port, wherein the at least one attenuation port is configured to couple the beamforming network to the at least one attenuation component; and a beamforming network input, and', 'at least one of beamforming network output, wherein the beamforming network output is coupled to a radiating waveguide input; and, 'a beamforming network, and wherein the beamforming network comprisesat least one attenuation port, wherein the at least one attenuation port is configured to couple the beamforming network to the at least one attenuation component.2. The radar system according to claim 1 , wherein the at least one attenuation port comprises a plurality of attenuation ports and wherein the at least one attenuation component comprises a plurality of attenuation components claim 1 , wherein each attenuation port is coupled to a respective attenuation component.3. The radar system according to claim 1 , wherein the attenuation component comprises a ...

APPARATUS FOR INSPECTING DRIVER ASSISTANCE SYSTEM OF VEHICLE AND METHOD FOR CONTROLLING THE SAME

Disclosed herein is an apparatus for inspecting driver assistance systems provided in a vehicle, including: a multi-joint robot; a first inspection unit mounted on the multi-joint robot and inspecting some of the driver assistance systems inside the vehicle; and a second inspection unit separably mounted from the multi-joint robot or the first inspection unit and inspecting other some of the driver assistance systems from an outside of the vehicle. 1. An apparatus for inspecting driver assistance systems provided in a vehicle , comprising:a multi-joint robot;a first inspection unit mounted on the multi-joint robot and inspecting some of the driver assistance systems inside the vehicle; anda second inspection unit separably mounted from the multi-joint robot or the first inspection unit and inspecting other some of the driver assistance systems from an outside of the vehicle.2. The apparatus according to claim 1 , wherein the first inspection unit includes an around view monitoring (AVM) system inspector provided to inspect an AVM system inside the vehicle and a head up display (HUD) system inspector provided to inspect an HUD system inside the vehicle claim 1 , andthe second inspection unit includes a smart cruise control (SCC) system inspector provided to inspect an SCC system from the outside of the vehicle and a lane departure warning system (LDWS) inspector provided to inspect an LDWS from the outside of the vehicle.3. The apparatus according to claim 2 , wherein the second inspection unit is separated from the multi-joint robot or the first inspection unit at the time of inspecting at least one of the AVM system and the HUD system and is mounted on the multi-joint robot or the first inspection unit at the time of inspecting at least one of the SCC system and the LDWS.4. The apparatus according to claim 1 , wherein the first inspection unit includes a first unit frame mounted on the multi-joint robot claim 1 , andthe second inspection unit includes a second unit ...

Waveguide system comprising a scattering device for generating a second non-fundamental wave mode from a first non-fundamental wave mode

Aspects of the subject disclosure may include, a system that facilitates directing a first electromagnetic wave to a device positioned along a transmission medium, the device facilitating a perturbation of the first electromagnetic wave, and the first electromagnetic wave having a first field intensity near an outer surface of the transmission medium, and generating, by the device, a second electromagnetic wave having a second field intensity near the outer surface of the transmission medium that is lower than the first field intensity of the first electromagnetic wave. Other embodiments are disclosed.

RADAR SENSOR ANTENNA WITH ANTI-REFLECTION ELEMENT

An antenna for a radar sensor includes an emitter element, a receiver element, and an anti-reflection element. The emitter element is configured to direct the emitted signal along a boresight that intersects a fascia. The receiver element is configured to detect a reflected signal reflected by an object located beyond the fascia. The anti-reflection element is configured to reduce reflection by the antenna of an early-reflection portion reflected by the fascia. 1. An antenna for a radar sensor configured to emit an emitted signal , wherein a fascia reflects an early-reflection portion of the emitted signal toward the antenna , said antenna comprising:an emitter element configured to direct the emitted signal along a boresight that intersects the fascia;a receiver element configured to detect a reflected signal reflected by an object located beyond the fascia; andan anti-reflection element configured to reduce reflection by the antenna of the early-reflection portion.2. The antenna in accordance with claim 1 , wherein the anti-reflection element includes a redirection array configured to redirect reflectively the early-reflection portion away from boresight.3. The antenna in accordance with claim 2 , wherein the redirection array includes a plurality of reflective patches that cooperate to reflect the early-reflection portion away from the boresight.4. The antenna in accordance with claim 1 , wherein the anti-reflection element includes one or more resonant patches to form an absorbing array configured to absorb the early-reflection portion.5. The antenna in accordance with claim 4 , wherein the one or more resonant patches are configured to dissipate energy into a substrate of the antenna.6. The antenna in accordance with claim 1 , wherein the anti-reflection element includes a nulling array configured to reflect a first portion of the early-reflection portion at a first phase claim 1 , and reflect a second portion of the early-reflection portion at a second phase ...

MAGNETIC METAL PARTICLE AGGREGATE AND RADIO WAVE ABSORBER

A magnetic metal particle aggregate includes a plurality of magnetic metal particles including at least one magnetic metal selected from a first group consisting of Fe, Co, and Ni. The plurality of magnetic metal particles are partly bound with each other, and an average particle diameter of the plurality of magnetic metal particles is 10 nm or more and 50 nm or less. The magnetic metal particle aggregate has an average particle diameter of 15 nm or more and 200 nm or less. 1. A magnetic metal particle aggregate comprising:a plurality of magnetic metal particles including at least one magnetic metal selected from a first group consisting of Fe, Co, and Ni, the plurality of magnetic metal particles being partly bound with each other, an average particle diameter of the plurality of magnetic metal particles being 10 nm or more and 50 nm or less, wherein the magnetic metal particle aggregate has an average particle diameter of 15 nm or more and 200 nm or less.2. The magnetic metal particle aggregate according to claim 1 , wherein a frequency dependence of an imaginary part of relative magnetic permeability of the magnetic metal particle aggregate has peaks at two frequencies.3. The magnetic metal particle aggregate according to claim 1 , wherein a frequency dependence of a real part of relative magnetic permeability of the magnetic metal particle aggregate has peaks at two frequencies.4. A radio wave absorber comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the magnetic metal particle aggregate according to ; and'}a binding layer having higher resistance than the magnetic metal particle aggregate.5. The radio wave absorber according to claim 4 , wherein a volume filling ratio of the magnetic metal particle aggregate in the radio wave absorber is 10% or more and 60% or less.6. The radio wave absorber according to having an electric resistivity of 10 MΩ·cm or more.7. A magnetic metal particle aggregate comprising: a core portion including at least one ...

NANOPARTICLE TREATED FABRICS, FIBERS, FILAMENTS, AND YARNS AND RELATED METHODS

Nanoparticle treated fibrous articles, such as fabrics, fibers, filaments, or yarns, include a plurality of exposed, nonionic metal nanoparticles non-covalently affixed thereto. Metal nanoparticles, particularly spherical-shaped metal nanoparticles which have solid cores, can be strongly affixed to fibrous articles without covalently bonds and/or without being encapsulated within a polymer or adhesive. Spherical metal nanoparticles appear to adhere to fibrous articles by Van der Waals forces. Because they are nonionic, spherical nanoparticles are not easily removed by solvents, water, surfactants, and soaps and remain after several washings, sometimes up to 50 or more washings. Nonetheless, they readily detach from fibrous articles when contacted by microbes and then kill or denature the microbes. Coral-shaped nanoparticles can be used in conjunction with spherical nanoparticles to assist in affixing the spherical nanoparticles and/or by themselves or in combination with spherical particles to kill or denature microbes. 1. A nanoparticle treated fibrous article , comprising:a fibrous article selected from a fabric, fiber, filament, or yarn; anda plurality of exposed, nonionic metal nanoparticles non-covalently affixed to the fibrous article.2. A nanoparticle treated fibrous article as in claim 1 , wherein the nonionic metal nanoparticles comprise at least one metal selected from the group consisting of silver claim 1 , gold claim 1 , platinum claim 1 , palladium claim 1 , rhodium claim 1 , osmium claim 1 , ruthenium claim 1 , rhodium claim 1 , rhenium claim 1 , molybdenum claim 1 , copper claim 1 , iron claim 1 , nickel claim 1 , tin claim 1 , beryllium claim 1 , cobalt claim 1 , antimony claim 1 , chromium claim 1 , manganese claim 1 , zirconium claim 1 , tin claim 1 , zinc claim 1 , tungsten claim 1 , titanium claim 1 , vanadium claim 1 , lanthanum claim 1 , cerium claim 1 , heterogeneous mixtures thereof claim 1 , and alloys thereof.3. A nanoparticle treated ...

CIRCUIT-LOADED CONFORMAL METASURFACE CLOAK

An electromagnetic invisibility cloaking device with a broadened cloaking bandwidth and/or a tunable frequency of operation. The cloaking device includes an object (e.g., antenna) and a metasurface () that conforms to the surface design of the object. The metasurface includes an array of metal cells (A, . . . , Y), where each of the metal cells includes a circuit element () (e.g., active, passive, negative impedance converter element). The array of metal cells may be represented as an array of metal square patches, a mesh grid, horizontal or vertical conductive strips, or any arbitrary combination of unit cell patterns, where each opening, or a subset of them, in such an array includes an embedded circuit element. By incorporating the circuit elements in the conformal metasurface, the cloaking bandwidth is broadened and the frequency of operation is actively controlled and tuned. 1. An electromagnetic invisibility cloaking device , comprising:an object; anda metasurface comprising an array of metal cells, wherein one or more of said metal cells comprises a circuit element, wherein said metasurface conforms to a surface design of said object.2. The electromagnetic invisibility cloaking device as recited in claim 1 , wherein said object to be cloaked is an antenna.3. The electromagnetic invisibility cloaking device as recited in claim 1 , wherein said object is cylindrical in shape.4. The electromagnetic invisibility cloaking device as recited in claim 1 , wherein said circuit element is a passive device.5. The electromagnetic invisibility cloaking device as recited in claim 1 , wherein said circuit element is an active device.6. The electromagnetic invisibility cloaking device as recited in claim 1 , wherein said circuit element comprises a negative impedance converter element.7. The electromagnetic invisibility cloaking device as recited in claim 6 , wherein said negative impedance converter element corresponds to a one-port op-amp circuit acting as a negative load. ...

Radome for an antenna with a concave-reflector

A radome for a concave-reflector antenna is fastened directly onto the reflector's edge. The inner surface of the radome comprises at least one absorbent part partially covering its surface area and disposed along its peripheral edge. The surface area of the radome covered by the absorbent part(s) is less than 15% of the total surface area. The radome may comprise two absorbent parts in diametrically opposite positions. Each absorbent part may have a substantially triangular shape, the base of the absorbent part being rounded along the radome's edge, and a portion of its surface area having been removed laterally from each side of the triangle in a circular arc cut-out.

Multifunctional Hybrid Module And Portable Device Comprising Same

A multifunctional integrated module is provided. The multifunctional integrated module includes an antenna unit including heterogeneous antennas and a magnetic field shielding unit, disposed on one surface of the antenna unit, including a magnetic field shielding layer which includes shredded Fe-based alloy fragments and a dielectric filling at least a part of gaps between at least a part of some adjacent ones of the shredded Fe-based alloy fragments, to improve the characteristics of the antennas and condense a magnetic flux toward the antennas. According to this, although the functions are performed simultaneously, the respective functions are excellently expressed at the same time, and the durability can be ensured by preventing the deterioration of the function even with external physical shocks during use. 1. A multifunctional integrated module , comprisingan antenna unit including heterogeneous antennas; anda magnetic field shielding unit, disposed on one surface of the antenna unit, including a magnetic field shielding layer which includes shredded Fe-based alloy fragments and a dielectric filling at least a part of gaps between at least a part of some adjacent ones of the shredded Fe-based alloy fragments, configured to improve characteristics of the antennas and condense a magnetic flux toward the antennas.2. The multifunctional integrated module of claim 1 , wherein the heterogeneous antennas have different operating frequency bands from each other or perform different functions from each other.3. The multifunctional integrated module of claim 2 , wherein the heterogeneous antennas include at least two types of antennas among a near field communication (NFC) antenna claim 2 , a magnetic security transmission (MST) antenna claim 2 , and a wireless power transmission (WPT) antenna.4. The multifunctional integrated module of claim 2 , wherein the heterogeneous antennas include two or more types of antennas among a first antenna having an operating frequency ...

Patterned Conductive Ink Film Absorber for a Foldable Transportable Shelter

Disclosed is a thin-film radio frequency absorber material that is mass-produced by a high-speed manufacturing method of printing a highly controlled pattern of conductive ink squares onto a thin roll film, resulting in a lightweight low-cost radio frequency absorber component that is flexible for use in multiple novel configurations. The roll film material and printed squares are each easily adjustable to a specific size and thickness within the manufacturing process to coincide with control and protections related to variable specific radio and radar wave frequencies. Further integration into the three-layered thin-profile radio frequency energy absorber and reflector assembly provides control and protection properties related to radio and radar frequency, infrared, electromagnetic pulse, electromagnetic interference, and thermal insulation values in structural building panels utilized in lightweight structures such as the foldable transportable structure or other types of building and protection assemblies. 1. A method of mass manufacturing a patterned conductive ink printed on film radio frequency absorber at a low-cost , comprising the steps of: printing with at least one existing standardized mass-producible roll film printing process; using at least one custom laser-etched printing process cylinder; having at least one designed and engineered conductive ink square pattern , customized for size and layout that is relative to radio frequency energy absorption and scatter of radio frequency energy waves in a range of frequencies; utilizing at least one type of continuous roll film of varying thickness and materials processed with either a corona or plasma treatment to accept and bond both the printed pattern of conductive ink squares and other chosen panel assembly components.2. The method of mass manufacturing a patterned conductive ink printed on film absorber material according to wherein said customized ink printing process further comprises: using a ...

ANTENNA AND ELECTRONIC DEVICE COMPRISING SAME

According to various embodiments, an electronic device may comprise: a housing; an antenna structure disposed in an inner space of the housing, the antenna structure including a substrate having a first surface and a second surface oriented toward a direction opposite to the first surface, and at least one first antenna element disposed in a space between the first surface and the second surface and having a beam pattern formed toward a conductive part; an electric wave absorbing member disposed between the conductive part and the at least one first antenna element so as to be disposed in a path in which the beam pattern is formed; and a first wireless communication circuit disposed in the inner space of the housing and configured to transmit or receive a wireless signal of a first frequency band through the at least one first antenna element. 1. An electronic device comprising:a housing having an inner space;an antenna structure disposed in the inner space of the housing, the antenna structure comprising: a first surface, and', 'a second surface oriented in a direction opposite to the first surface; and, 'a substrate comprisingat least one first antenna element disposed in a space between the first surface and the second surface and configured to form a beam pattern toward a conductive portion of the housing;a radio-wave absorption member disposed between the conductive portion and the at least one first antenna element in a path in which the beam pattern is formed; anda first wireless communication circuit disposed in the inner space and configured to transmit or receive a wireless signal in a first frequency band through the at least one first antenna element.2. The electronic device of claim 1 , wherein the first wireless communication circuit is configured to transmit and receive a wireless signal having a frequency in a range from 3 GHz to 100 GHz through the at least one first antenna element.3. The electronic device of claim 1 , wherein the radio-wave ...

RADAR RADIATION REDIRECTING INHIBITION LAYER

A radar radiation redirecting inhibition layer for reducing radar cross section (RCS) of radar radiation redirection pavement marking tapes, pavement marking cover tapes incorporating such layer and methods of use are described.

Downhole logging tool incorporating metamaterial

A wellbore servicing tool. The wellbore servicing tool comprises a tool body, an electromagnetic transmitter coupled to the tool body, an electromagnetic receiver coupled to the tool body and spaced apart from the electromagnetic transmitter, wherein a portion of the tool body between the electromagnetic transmitter and the electromagnetic receiver defines a direct signal path between the electromagnetic transmitter and the electromagnetic receiver, and an absorbing material coupled to the tool body in the direct signal path between the electromagnetic transmitter and the electromagnetic receiver, proximate to the electromagnetic receiver.

RF RIPPLE CORRECTION IN AN ANTENNA APERTURE

A method and apparatus for RF ripple correction in an antenna aperture are described. In one embodiment, the antenna comprises: an array of antenna elements having liquid crystal (LC); drive circuitry coupled to the array and having a plurality of drivers, each driver of the plurality of drivers coupled to an antenna element of the array and operable to apply a drive voltage to the antenna element; and radio-frequency (RF) ripple correction logic coupled to the drive circuitry to adjust drive voltages to compensate for ripple. 1. An antenna comprising:an array of antenna elements having liquid crystal (LC);drive circuitry coupled to the array and having a plurality of drivers, each driver of the plurality of drivers coupled to an antenna element of the array and operable to apply a drive voltage to the antenna element; andradio-frequency (RF) ripple correction logic coupled to the drive circuitry to adjust drive voltages to compensate for ripple.2. The antenna defined in wherein the RF ripple correction logic is operable to readjust driving voltages for antenna elements of the array to apply a same differential voltage in both a positive frame and a negative frame.3. The antenna defined in wherein each driver of the plurality of drivers has an output defined at each gray shade level claim 2 , of a plurality of gray shade levels claim 2 , for both negative and positive frames and a gamma voltage controls the output.4. The antenna defined in wherein the RF ripple correction logic is operable to perform RF ripple correction at N/2 gray shade levels for N gamma voltage levels claim 3 , where N is an integer.5. The antenna defined in wherein a common voltage is applied to antenna elements in the array claim 1 , and further wherein the RF ripple correction logic is operable to adjust the common voltage to compensate for ripple.6. The antenna defined in further comprising a controller coupled to the drive circuitry to invert polarity of a differential voltage applied on ...

Electromagnetic wave blocking device having electromagnetic wave shielding and absorbing capacity and manufacturing method therefor

The present invention provides an electromagnetic wave blocking device having electromagnetic wave shielding and absorbing capacity. The electromagnetic wave blocking device having electromagnetic wave shielding and absorbing capacity includes: an electromagnetic wave blocking device body part configured such that an identical material is mixed with shielding and absorbing materials or different materials are arranged on both sides of a boundary of their sides to thus enable electromagnetic wave absorption and electromagnetic wave shielding; and an edge electromagnetic wave absorbing part formed along the boundary of the blocking device body part to thus additionally block electromagnetic waves. Furthermore, the present invention provides a method for manufacturing the electromagnetic wave blocking device.