ELECTROOPTIC PHASED-ARRAY TRANSMITTER

An optically controlled transmit phased array was designed and a four- element linear array was built using integrated optics for beamforming and fiber optics for flexible remoting of the antenna, Electrooptic p hase shifters remote from the antenna allowed simple electronic contro l of beam pointing, This phased array transmitter operated at 10 GHz w ith an effective isotropic radiated power (EIRP) of 14 dBW, The radiat ed power corresponded to approximately 0.4 W per element, The transmit ted beam was electronically steered to any angle between -30 degrees a nd 30 degrees in less than 5 mu s, The measured antenna patterns agree d well with theory.