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