US Patent No: 6,417,804

Number of patents in Portfolio can not be more than 2000

Control device for the formation of several simultaneous radar reception beams for an electronic scanning antenna

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Abstract

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A control device for the formation of plural simultaneous radar reception beams in an electronic scanning antenna. The electronic scanning antenna includes an array of detectors of a reception microwave signal arranged in n columns and m rows. The control device makes, in the microwave domain, a first partial combination of the signals received, the first combination being made according to each column. An optical device makes a second partial combination in the optical domain, the optical device including at least n optical sources each producing an optical signal modulated at the frequency of the reception microwave signal by an associated microwave combination signal. The optical signal is divided into r optical signals to obtain nxr optical signals. An optical phase-shifting device is provided for each of the nxr optical signals obtained, and r combining devices combine each group of n optical signals, and r detectors detect the microwave signal f assigned to each group of n optical signals to form r microwave reception beams. The control device can be applied especially to a simple and flexible reconfiguration of reception beams of an electronic scanning antenna.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
THOMSON-CSFPARIS2259

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Maas, Olivier Gif S/Yvette, FR 2 9
Merlet, Thomas St Cyr l'Ecole, FR 4 10

Cited Art Landscape

Patent Info (Count) # Cites Year
 
FUJITSU LIMITED (1)
5,909,297 Drift compensating circuit for optical modulators in an optical system 36 1997
 
Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence (1)
4,686,533 Optoelectronically switched phase shifter for radar and satellite phased array antennas 16 1983
 
HUGHES ELECTRONICS CORPORATION (1)
5,861,845 Wideband phased array antennas and methods 44 1998
 
NATIONAL RESEARCH COUNCIL OF CANADA (1)
5,131,748 Broadband optical detection of transient motion from a scattering surface by two-wave mixing in a photorefractive crystal 43 1991
 
The United States of America as represented by the Secretary of the Navy (1)
5,917,970 Wavelength multiplexed, electro-optically controllable, fiber optic multi-tap delay line 15 1998
 
TRW INC. (1)
4,725,844 Fiber optical discrete phase modulation system 42 1987

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
KATHREIN-WERKE KG (2)
7,132,979 Calibration apparatus for a switchable antenna array, and an associated operating method 3 2003
7,068,218 Calibration device for an antenna array, antenna array and methods for antenna array operation 8 2003
 
LOCKHEED MARTIN CORPORATION (2)
7,801,447 Method and system for signal processing by modulation of an optical signal with a multichannel radio frequency signal 0 2006
7,724,179 Miniaturized microwave-photonic receiver 1 2008
 
BAE SYSTEMS PLC (1)
8,466,848 Beam shaping for wide band array antennae 0 2006
 
RAYTHEON COMPANY (1)
7,248,343 Amplitude-weighted spatial coherent processing for LADAR system 1 2004

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