Method and apparatus for controlling an active antenna

Details Method and apparatus for controlling an active antenna Method and apparatus for controlling an active antenna

1993-07-26

1994-11-22

Issing, Gregory C.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

342372, 342375, H01Q 322

Patent

active

053673050

ABSTRACT:
A method of controlling an active antenna comprising a matrix of individual transmitting/receiving elements. Two optical frequencies are superposed to generate an optical beat signal in the microwave frequency range. After electrical/optical conversion the beat signal is fed with a defined phase and amplitude to the individual transmitting/receiving elements of the antenna.

REFERENCES:
patent: 3005960 (1961-10-01), Levenson
patent: 3766558 (1973-10-01), Kuechken
patent: 4258363 (1981-03-01), Bodner et al.
patent: 4583096 (1986-04-01), Bellman et al.
patent: 4725844 (1988-02-01), Goodwin et al.
patent: 4965603 (1990-10-01), Hong et al.
Toughlian et al, "A Deformable Mirror-Based Optical Beamforming System for Phased Array Antennas" IEEE Photonics Tech. Letters, vol. 2 #6, Jun. 1990.
Koepf et al, "Optical Processor for Phased Array Antenna Beam Formation" SPIE vol. 477, Optical Technology for Microwave Applications (1984) pp. 75-81.
Voltage Controlled Optical/RF Phase Shifter-Journal of Lightwave Technology-vol. LT3-No. 5, Oct. 1985.
Optical Processor for Phased Array Antenna Beam Formation Gerhard Keopf-SPIE vol. 477-Optical Technology for Microwave Applications (1984) pp. 75-81.

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