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1. EP3271966 - PASSIVE SERIES-FED ELECTRONICALLY STEERED DIELECTRIC TRAVELLING WAVE ARRAY

Office European Patent Office
Application Number 15719878
Application Date 20.03.2015
Publication Number 3271966
Publication Date 24.01.2018
Publication Kind A1
IPC
H01Q 3/26
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
3Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
26varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
G02F 1/29
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
29for the control of the position or the direction of light beams, i.e. deflection
H01L 41/09
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive elements
09with electrical input and mechanical output
H01P 1/18
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
PWAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF THE WAVEGUIDE TYPE
1Auxiliary devices
18Phase-shifters
H01Q 3/22
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
3Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
22varying the orientation in accordance with variation of frequency of radiated wave
H01Q 3/32
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
3Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
26varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
30varying the phase
32by mechanical means
CPC
H01Q 3/36
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
3Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
26varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
30varying the ; relative; phase ; between the radiating elements of an array
34by electrical means
36with variable phase-shifters
H01Q 3/2694
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
3Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
26varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
2682Time delay steered arrays
2694using also variable phase-shifters
H01Q 3/32
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
3Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
26varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
30varying the ; relative; phase ; between the radiating elements of an array
32by mechanical means
H01Q 3/443
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
3Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
44varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
443varying the phase velocity along a leaky transmission line
H01Q 5/35
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
5Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
30Arrangements for providing operation on different wavebands
307Individual or coupled radiating elements, each element being fed in an unspecified way
342for different propagation modes
35using two or more simultaneously fed points
H01Q 9/0435
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
9Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
04Resonant antennas
0407Substantially flat resonant element parallel to ground plane, e.g. patch antenna
0428radiating a circular polarised wave
0435using two feed points
Applicants AMI RES & DEVELOPMENT LLC
Inventors APOSTOLOS JOHN T
MOUYOS WILLIAM
MCMAHON BENJAMIN
MOLEN BRIAN
GILI PAUL
Designated States
Priority Data 2015021667 20.03.2015 US
Title
(DE) SERIENGESPEISTE PASSIVE ELEKTRONISCH GELENKTE DIELEKTRISCHE WANDERWELLENANORDNUNG
(EN) PASSIVE SERIES-FED ELECTRONICALLY STEERED DIELECTRIC TRAVELLING WAVE ARRAY
(FR) RÉSEAU DIÉLECTRIQUE PASSIF À ONDES PROGRESSIVES, ORIENTÉ ÉLECTRONIQUEMENT ET ALIMENTÉ EN SÉRIE
Abstract
(EN)
A low cost passive electronic scanning array based on a Dielectric Traveling Wave Array (DTWA) technology that uses micro-actuated control of a waveguide transmission medium feeding the array elements to steer the array beam. Array gain is achieved by coherently combining element outputs with very low loss, weighted waveguide directional couplers. By modifying the propagation delay of the dielectric-filled waveguide through the introduction of a variable air gap, the radiated phase of the coupled patch array elements is changed, steering the beam accordingly. Since the circuitry is passive and bi-directional, the same antenna array can be used on receive or transmit unlike an active phased array that requires transmit/receiver switching. The design has been validated at Ku-Band through brassboard testing and is scalable with simulation at Ka-Band, steering the beam over a Field of Regard (FoR) of +/- 50o with nearly uniform gain. The approach provides phase control without active components at each individual array element, which significantly reduces the cost of a phased array by at least an order of magnitude.

(FR)
L'invention concerne un réseau de balayage électronique passif à faible coût reposant sur une technologie de réseau diélectrique à ondes progressives (DTWA) qui utilise une commande micro-actionnée d'un milieu de transmission de guide d'ondes alimentant les éléments de réseau pour orienter le faisceau de réseau. On obtient un gain de réseau en combinant de manière cohérente des sorties d'éléments avec des coupleurs directionnels de guides d'ondes pondérés à pertes très faibles. En modifiant le retard de propagation du guide d'onde rempli de diélectrique par l'introduction d'une couche d'air variable, on modifie la phase rayonnée des éléments de réseau à plaque couplés, ce qui permet d'orienter le faisceau en conséquence. Étant donné que les circuits sont passifs et bidirectionnels, un même réseau d'antennes peut être utilisé pour la réception et pour l'émission, contrairement à un réseau à commande de phase actif qui nécessite une commutation entre émission et réception. La conception a été validée en bande Ku par des essais expérimentaux et comporte une évolutivité par simulation en bande Ka, permettant d'orienter le faisceau sur un champ de vision (FoR) de +/- 50 o avec un gain pratiquement uniforme. Cette approche offre une commande de phase sans composants actifs au niveau de chaque élément de réseau individuel, ce qui réduit nettement le coût d'un réseau à commande de phase d'au moins un ordre de grandeur.

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