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1. WO2016153459 - PASSIVE SERIES-FED ELECTRONICALLY STEERED DIELECTRIC TRAVELLING WAVE ARRAY

Publication Number WO/2016/153459
Publication Date 29.09.2016
International Application No. PCT/US2015/021667
International Filing Date 20.03.2015
IPC
H01Q 3/26 2006.01
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
H01Q 3/32 2006.01
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
H01Q 3/36 2006.01
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
34by electrical means
36with variable phase-shifters
H01Q 15/16 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
15Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
14Reflecting surfaces; Equivalent structures
16curved in two dimensions, e.g. paraboloidal
H01Q 21/00 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
21Antenna arrays or systems
H01Q 5/35 2015.01
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
CPC
H01Q 15/16
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
15Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
14Reflecting surfaces; Equivalent structures
16curved in two dimensions, e.g. paraboloidal
H01Q 21/0037
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
21Antenna arrays or systems
0006Particular feeding systems
0037linear waveguide fed arrays
H01Q 21/0068
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
21Antenna arrays or systems
0006Particular feeding systems
0037linear waveguide fed arrays
0068Dielectric waveguide fed arrays
H01Q 21/065
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
21Antenna arrays or systems
06Arrays of individually energised antenna units similarly polarised and spaced apart
061Two dimensional planar arrays
065Patch antenna array
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
Applicants
  • AMI RESEARCH & DEVELOPMENT, LLC [US]/[US]
Inventors
  • APOSTOLOS, John T.
  • MOUYOS, William
  • MCMAHON, Benjamin
  • MOLEN, Brian
  • GILI, Paul
Agents
  • THIBODEAU, JR., David J.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(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.
Also published as
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