Share Email Print
cover

Proceedings Paper

Phased-array antenna beam steering with a photonic I-Q beam-forming network
Author(s): James F. Coward; Ting K. Yee
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A photonic in-phase/quadrature (I-Q) RF phase shifter utilizing the signals from two integrated optic Mach-Zehnder modulators has been tested. This system demonstrates the capability of 360-deg phase control, less than 1-deg RF errors at constant amplitude, and less than 0.5-degree errors over a 30 dB RF amplitude taper. Using this technique, a four-channel beam forming network was also developed and integrated with a printed patch, lightweight phased array antenna. High accuracy linear beam control was achieved. Null patterns of more than 30 dB were produced on boresight. The null was steered to greater than 30-deg from boresight with a linear accuracy of about 1 deg.

Paper Details

Date Published: 2 December 1992
PDF: 11 pages
Proc. SPIE 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III, (2 December 1992); doi: 10.1117/12.138435
Show Author Affiliations
James F. Coward, Lockheed Missiles & Space Co., Inc. (United States)
Ting K. Yee, Lockheed Missiles & Space Co., Inc. (United States)


Published in SPIE Proceedings Vol. 1703:
Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III
Shi-Kay Yao; Brian M. Hendrickson, Editor(s)

© SPIE. Terms of Use
Back to Top