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Optical Beam Control of Millimeter Wave Phased Array Antennas for Communications
Conference proceeding

Optical Beam Control of Millimeter Wave Phased Array Antennas for Communications

A Daryoush, P Herczfeld, V Contarino, A Rosen, Z Turski and P Wahi
1986 16th European Microwave Conference, pp 864-869
Sep 1986

Abstract

Antenna arrays Communication system control Frequency Millimeter wave communication Millimeter wave technology Optical arrays Optical beams Optical control Optical fiber communication Phased arrays
Large aperture phased array antennas are designed with fiber-optic distribution networks to provide phase and frequency reference signals, control signals for beam steering and shaping, and data/frequency hopping signals to MMIC active T/R modules. The experimental results of a FO communication network at millimeter wave frequency of 38GHz (Ka-band) are presented. The results of 500MHz-1GHz FO link characteristics such as frequency response flatness, harmonics, and the third order intermodulation distortion are presented. Results of stabilization of a 38GHz IMPATT oscillator using indirect optical injection locking is also discussed. A locking range of 132MHz using 45dB amplification gain is demonstrated. The overall system FM noise degradation is measured to be 16dB. The communication link is established by up-conversion of the data link with the stabilized LO. Results of a true time delay phase shifter using a novel fiber striching technique is presented. A phase shift as high as 20° at 10GHz is achieved using the expansion properties of a piezo-electric ring by applying dc voltage.

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