An acoustooptic-phased-array antenna beamformer for multiple simultaneous beam generation

Author

Riza, Nabeel A.

Author_Institution

R&D Center, General Electric Corp., Schenectady, NY, USA

Volume

4

Issue

7

fYear

1992

fDate

7/1/1992 12:00:00 AM

Firstpage

807

Lastpage

809

Abstract

An acoustooptic-phased-array antenna beamformer with N multiple simultaneous beam generation capability is experimentally demonstrated using a single channel acoustooptic device driven by a signal of frequency f/sub C/, and an acoustooptic device with N channels driven by signals with frequencies f/sub C/+f/sub 1/, . . ., f/sub C/+f/sub N/, respectively. f/sub 1/, . . ., f/sub n/, . . ., f/sub N/ control the carrier and phase values of the N independent beam generation signals, n being the beam number. Using f/sub C/=60 MHz, and N=2, 0-2 pi phase control is achieved using f/sub n/=0-460 kHz. A dynamic range of 54.5 dB at 1 MHz and carrier-to-noise of 113.4 dB/Hz at 1 MHz is measured for a 120 MHz carrier. One-dimensional transmit/receive antenna beam scanning can be provided by this system.<>

Keywords

acousto-optical devices; antenna phased arrays; 1 MHz; 120 MHz; 1D transmit receive antenna beam scanning; 60 MHz; acoustooptic-phased-array antenna beamformer; carrier-to-noise; dynamic range; multiple simultaneous beam generation; phase control; single channel acoustooptic device; Frequency; Laser beams; Linear antenna arrays; Optical arrays; Optical control; Optical sensors; Phased arrays; Radar antennas; Signal generators; Spaceborne radar;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.145279

Filename

145279