Title :
Optical feed for a phased array microwave antenna
Author :
Tamburrini, M. ; Parent, M. ; Goldberg, L. ; Stillwell, D.
Author_Institution :
Naval Research Laboratory, Washington, USA
Abstract :
Microwave signals for all array elements in a phared array microwave antenna are simultaneously generated by spatial sampling of a moving sinusoidal interference pattern formed between two frequency-offset injection-locked laser diodes. The offset and radar frequency of 3.2 GHz were generated by a Bragg cell. A nearly distortionless antenna beam pattern and 180° steering are demonstrated in a linear seven-element array.
Keywords :
antenna feeders; antenna phased arrays; fibre optics; microwave antennas; radar antennas; 180° steering; 3.2 GHz; Bragg cell; SHF; beam steering; linear seven-element array; microwave signals; moving sinusoidal interference pattern; nearly distortionless antenna beam pattern; optical feeds; phased array microwave antenna; radar frequency; two-frequency-offset injection-locked laser diodes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870485
