Experimental demonstration of an acousto-optic system for two-dimensional phased-array antenna scanning
- 10 April 1993
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 32 (11) , 1936-1942
- https://doi.org/10.1364/ao.32.001936
Abstract
A novel in-line interferometric acousto-optic architecture for two-dimensional beam scanning of planar phased arrays is demonstrated experimentally for a 330-MHz carrier. The required modulo-2π phase control along the two orthogonal antenna-array directions is achieved by using two independent control frequencies f1 and f2 with frequency variations of 0–170 and 0–210 kHz, respectively. A processor output carrier signal-to-noise ratio of 48 dB at +1-MHz offset is measured in an analyzer bandwidth of 300 kHz, with a carrier tuning range of 90 MHz.Keywords
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