Title :
An active phased array with optical input and beam-scanning capability
Author :
Chew, Siou Teck ; Tong, Tak Kit ; Wu, Ming C. ; Itoh, Tatsuo
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
An active antenna array with optical input and beam scanning capability was developed. The phase shift between antenna elements is controlled by means of unilateral injection locking. The reference signal for injection locking is launched into an optical fiber by a multiquantum-well InGaAs-InGaAsP distributed feedback laser. The RF signal is recovered by a photodetector at the other end of the link and fed to the RF circuit. Experimental results are presented and discussed.<>
Keywords :
active antennas; antenna phased arrays; optical fibres; scanning antennas; InGaAs-InGaAsP; RF circuit; RF signal; active antenna phased array; beam-scanning; multiquantum-well InGaAs-InGaAsP distributed feedback laser; optical fiber; optical input; phase shift; photodetector; reference signal; unilateral injection locking; Antenna arrays; Distributed feedback devices; Fiber lasers; Injection-locked oscillators; Laser beams; Optical arrays; Optical beams; Optical feedback; Optical fibers; Phased arrays;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
