Array transmitter/receiver controlled by a true time-delay fiber-optic beamformer

Author

Frankel, Michael Y. ; Esman, Ronald D. ; Parent, Mark G.

Author_Institution

Naval Res. Lab., Washington, DC, USA

Volume

7

Issue

10

fYear

1995

Firstpage

1216

Lastpage

1218

Abstract

We demonstrate a phased-array antenna controlled by a fiber-optic beamformer in true time-delayed transmit mode and in phase-delayed receive mode. The wavelength-tunable optical carrier propagating in a high-dispersion fiber realizes a true time-delay, with the steering direction set by a single voltage controlling the wavelength. The linear antenna is a sparsely-populated array with eight broadband spiral elements. The transmitter operates in 2-18 GHz frequency range over /spl plusmn/50/spl deg/ azimuth steering, and the receiver operates in 6-16 GHz frequency range over /spl plusmn/35/spl deg/ azimuth steering.<>

Keywords

antenna phased arrays; linear antenna arrays; optical delay lines; optical fibres; receiving antennas; transmitting antennas; 2 to 18 GHz; 6 to 16 GHz; array receiver; array transmitter; azimuth steering; broadband spiral elements; fiber-optic beamformer; high-dispersion fiber; linear antenna; phase-delayed receive mode; phased-array antenna; sparsely-populated array; steering direction; time-delayed transmit mode; wavelength control; wavelength-tunable optical carrier; Antennas and propagation; Azimuth; Broadband antennas; Frequency; Linear antenna arrays; Optical propagation; Optical receivers; Optical transmitters; Receiving antennas; Transmitting antennas;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.466595

Filename

466595