Title :
Optically controlled serially fed phased-array transmitter
Author :
Chang, Yian ; Tsap, Boris ; Fetterman, Harold R. ; Cohen, David A. ; Levi, A.F.J. ; Newberg, Irwin L.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
3/1/1997 12:00:00 AM
Abstract :
A new optically controlled phased-array system has been developed that has all the advantages of true time delay (TTD), yet only requires one tunable laser, one optical modulator, and one fiber-optic grating unit. A two-element serial-feed transmitter has been assembled and tested to demonstrate the feasibility of this novel concept. Experimental results include TTD operation from 6-12 GHz using both 10 and 1 ns pulses transmitted to five different directions
Keywords :
antenna feeds; antenna phased arrays; laser beam applications; laser tuning; microwave antenna arrays; microwave imaging; optical delay lines; optical fibre networks; optical modulation; phased array radar; radio transmitters; timing; 1 ns; 10 ns; 6 to 12 GHz; fiber-optic grating unit; optical modulator; optically controlled phased-array transmitter; serially fed phased-array transmitter; true time delay; tunable laser; Control systems; Delay effects; Fiber gratings; Fiber lasers; Optical control; Optical fiber testing; Optical modulation; Optical transmitters; Phase modulation; Tunable circuits and devices;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
