Raytheon Company

Hughes Aircraft Company

Hughes Electronics Corporation

Other

Hrl Laboratories, LLC

Jar Jar Lee

Stan W Livingston

Clifton Quan

Robert Y Loo

Robert Chris Allison

Irwin L Newberg

Stanley W Livingston

Juan F Lam

Fangchou Yang

James H Schaffner

Robert A Rosen

Kapriel V Krikorian

Brian M Pierce

Steven R Wilkinson

Raymond K Tang

Ronald Regis Stephens

James V Strahan

Daniel Frederic Sievenpiper

Jonathan James Lynch

Debabani Choudhury

Gregory L Tangonan

Adele E Schmitz

Willie W Ng

Victor S Reinhardt

Jason G Milne

George I Tsuda

James A Carr

Huan-Wun Yen

Rory Kim Sorensen

Reza Tayrani

Julia J Brown

Ruey S Chu

Richard C Lind

Nam S Wong

Darren E Atkinson

Daniel J Hyman

Magdy F Iskander

Harry T Wang

Michael Wechsberg

Walter B Schulte, Jr

Hee Kyung Kim

Jonathan D Gordon

Brett Warneke

William Derbes

Huan W Yen

Joseph E Wheeler

Andrew A Walston

Kenneth L Schaffer

Jeffrey B Weber

Dennis Nagata

Allen T S Wang

Robert J Garfinkle

Donald R Wells

Richard P Ritch

Vince L Jones

Richard J Koenig

Allen TS Wang

Walter B Schulte Jr

Clifton c/o Raytheon Company Quan

Robert Y c/o Hrl Lab Llc Loo

Robert C c/o Raytheon Company Allison

James H c/o Raytheon Company Schaffner

A coincident phased dual-polarized antenna array configured to emit electromagnetic radiation includes: a plurality of electromagnetic radiators arranged in a grid, the plurality of electromagnetic radiators defining a plurality of notches; a ground plane spaced from the electromagnetic radiators; a conductive layer disposed between the electromagnetic radiators and the ground plane, the conductive layer having a plurality of slots laterally offset from the notches and being spaced apart from and electrically insulated from the electromagnetic radiators; and a plurality of feeds, each of the feeds spanning a corresponding slot of the slots and electrically connected to a portion of the conductive layer at one side of the corresponding slot.

Short coincident phased slot-fed dual polarized aperture

An antenna array includes a plurality of radiating elements disposed on a layer that is situated above an egg crate structure that is formed of interconnected dielectric panels. In some embodiments, balun circuitry is disposed on at least some of the dielectric panels of the egg crate structure for use in feeding corresponding radiating elements of the array in a balanced manner. Ground plane blocks may also be coupled to some or all of the dielectric panels to provide circuit shielding and/or to form a ground plane for the array antenna.

Array antenna and related techniques

An integrated differential high power amplifier-radiator array that overcomes the prior art impedance match issues is described. An impedance matching balun is used to feed a high output impedance, differential HPA, which in turn drives a wide band radiator or array of radiators having a matching input impedance to provide a highly efficient, compact transmit system. In one exemplary embodiment, the HPA may be a high impedance Class-B HPA configured as a push-pull cascode amplifier. A high impedance isolator or circulator may be used between the HPA and the radiator. One of ordinary skill in the art will readily appreciate that a receive implementation, using a properly matched low noise amplifier in place of the HPA, is also possible. Similarly, with the addition of a slotline circulator, transceiver operation is also attainable with the addition of an impedance matched receive chain.

Differential high power amplifier for a low profile, wide band transmit array

A system and method for processing antenna signals are provided. For example, the method includes, in a receive mode, weighting and combining signals from at least one low-band antenna radiator element operable over a first bandwidth, at least one high-band antenna radiator element operable over a second bandwidth at least partially overlapping the first bandwidth, and, in some examples, at least one antenna radiator element operable over one or more intermediate bandwidths. The method also includes, in a transmit mode, separating and weighting a full-band input port signal into at least one low-band sub-system output port signal, at least one high-band sub-system port output signal, and, in some examples, at least one intermediate sub-system output port signal operable over one or more overlapping intermediate bandwidths. The weighted combination and weighted separation cover an uninterrupted continuous full-band frequency whose extent covers the full frequency range of all subbands.

Embedded element electronically steerable antenna for improved operating bandwidth

A dual-patch antenna includes a ground plane, a first patch plate parallel to and separated from the ground plane by a separation distance, and a second patch plate separated from the ground plane by the separation distance. The first and second patch plates are coplanar and separated by a radiating slot. An excitation probe isolatedly passes through the ground plane and connects to the first patch plate. A first wall connects an edge of the first patch plate to the ground plane. The first wall is located approximately &#xbc; wavelength of a mid-band operating frequency from the radiating slot. A second wall connects an edge of the second patch plate to the ground plane. The second wall is located approximately &#xbc; wavelength of the mid-band operating frequency from the radiating slot. The dual-patch antennas may be organized in an array.

Dual-patch antenna and array

A space-fed conformal array for a high altitude airship includes a primary array lens assembly adapted for conformal mounting to a non-planar airship surface. The lens assembly includes a first set of radiator elements and a second set of radiator elements, the first set and the second set spaced apart by a spacing distance. The first set of radiators faces outwardly from the airship surface to provide a radiating aperture. The second set of radiators faces inwardly toward an inner space of the airship, for illumination by a feed array spaced from the second set of radiators.

Airship mounted array

In one embodiment, a wide bandwidth, reduced depth transmit/receive antenna array includes unit cells having continuous slots, a transceiver, unbalanced feeds, impedance transformers, and exciters. The continuous slots are formed in a conductive antenna plane, and the transceiver generates and/or receives electrical signals. The unbalanced feeds may be electrically connected between the transceiver and impedance transformers which match the impedance between feed lines and the exciter. They may be located in a plane perpendicular to the direction of propagation of the radiation, and also may be arranged between the conductive antenna plane and a backplane. The exciter spans a continuous slot, and emits and/or receives radiation from the slot. The antenna array is capable of operating without a radome or balun.

Wide band long slot array antenna using simple balun-less feed elements

A space-fed array is selectively operable in a reflective mode or in a feed-through mode. The array includes, in an exemplary embodiment, a primary array; and a feed array. The primary array includes a first side set of radiating elements, a first set of phase shifters, a set of switches, a second set of phase shifters and a second side set of radiating elements. Each of the switches is connected between corresponding ones of the first set and the second set of phase shifters and ground, selectively settable at an open position or at a closed position. The open position corresponds to the feed through mode, and the closed position corresponds to the reflective mode.

Space-fed array operable in a reflective mode and in a feed-through mode

A conformal end-fire antenna with a high impedance ground surface structure and an array of radiating elements formed thereon. The ground surface structure includes an array of metal protrusions on a electrically conductive sheet, the metal protrusions arranged in a two-dimensional lattice. The ground surface structure acts as a magnetic surface at an RF frequency band of interest, functioning as an electrical short at DC, and as a mirror which reflects an RF field in the frequency band with virtually no phase reversal.

Conformal end-fire arrays on high impedance ground plane

An electronically scanned antenna may include a plurality of space-fed, contiguous subarrays arranged in an annular region, each subarray including an inner set of radiating elements facing inwardly, an outer-facing set of radiating elements, and a feed system for illuminating the inner set of radiating elements. A plurality of RF amplifiers are coupled through a commutation switch matrix to selected ones of the subarray feed horn systems to illuminate a desired sector with RF energy.

Electronically scanned antenna

A phase shifter comprises a substrate, a ground plane formed on a first surface of the substrate, a support structure positioned on a second surface of the substrate opposite the first surface, three parallel, non-co-planar microstrip lines supported by the support structure above the second surface of the substrate, a ferrite element supported by the support structure between the second surface of the substrate and the three non-co-planar microstrip lines, and means for applying a magnetic field to the ferrite element.

Ferrite phase shifter and phase array radar system

A system for scanning an antenna array of the present invention. The system includes a first mechanism for modulating a desired signal on an optical carrier signal. The first mechanism includes a frequency-tunable optical oscillator with a phase shifter for changing an output frequency of the optical oscillator. A second mechanism employs the optical carrier signal to derive signals having predetermined phase relationships. A third mechanism receives the feed signals and radiates corresponding transmit signals in response thereto to the antenna array to steer the array. In more specific embodiment, the desired signal is a Radio Frequency (RF) signal, and the phase shifter is an electrically controlled optical RF phase shifter. The optical carrier signal includes a first optical carrier signal and a second optical carrier signal. The frequency-tunable optical oscillator includes a first tunable optical oscillator for providing the first optical carrier signal and a second tunable optical oscillator for providing the second optical carrier signal. The first and second optical oscillators include first and second optical RF phase shifters, respectively, that include feedback paths having optical and electrical sections.

Optically frequency generated scanned active array

A dual-band, space fed antenna array includes a feed array with a first set of feed radiators for operation in a first frequency band of operation and a second set of feed radiators for operation in a second frequency band of operation. A primary array lens assembly is spaced from and illuminated by the feed array. The primary array lens includes a first set of radiator elements and a second set of radiator elements operable in the first frequency band of operation. The primary array lens assembly also includes a third set of radiator elements and a fourth set of radiator elements operable in the second frequency band of operation.

Dual band space-fed array

An antenna array includes an array of continuous slots formed in a ground plane structure. A feed structure for exciting the slots includes a periodic set of probe feeds disposed behind the ground plane structure.

Antenna arrays using long slot apertures and balanced feeds

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Irvine, CA, United States of America

Jar Jar Lee