DocumentCode :
768248
Title :
An acoustooptic phased array antenna beamformer with independent phase and carrier control using single sideband signals
Author :
Riza, Nabeel A.
Author_Institution :
General Electric Corp. Res. & Dev. Center, Schenectady, NY, USA
Volume :
4
Issue :
2
fYear :
1992
Firstpage :
177
Lastpage :
179
Abstract :
An acoustooptic phase-array antenna beamformer is experimentally demonstrated using single sideband signals with frequencies omega /sub c/+ omega /sub 0/ and omega /sub c/- omega /sub 0/ to drive the two acoustooptic devices, respectively. Varying omega /sub c/ controls the antenna carrier (2 omega /sub c/), while changing omega /sub 0/ only effects the phase. Phase control of 0-2 pi is achieved using 0-340 kHz change in omega /sub 0/, with the carrier fixed at 120 MHz using omega /sub c/=60 MHz. A dynamic range of 66.6 dB at 2 MHz and carrier-to-noise of 126.9 dB/Hz at 2 MHz is measured. This beamformer can provide wide antenna tunable bandwidth and intrapulse beam forming.<>
Keywords :
acousto-optical devices; antenna phased arrays; 120 MHz; 2 MHz; acoustooptic phase-array antenna beamformer; antenna carrier; carrier control; intrapulse beam forming; phase control; single sideband signals; wide antenna tunable bandwidth; Acoustic beams; Antenna arrays; Frequency; Optical beams; Optical interferometry; Optical signal processing; Optical variables control; Phase control; Phased arrays; Silicon compounds;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/68.122353
Filename :
122353
Link To Document :
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