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Proceedings Paper

Two-dimensional optical architecture for phase and time-delay beamforming in a phased-array antenna
Author(s): Daniel Dolfi; S. Bann; Jean-Pierre Huignard; J. Roger
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Paper Abstract

We propose and experimentally demonstrate a two-dimensional optical architecture, based on polarization switching by N spatial light modulators of p x p pixels, which provides 2 exp N-1 time delays values and an analog control of the 0- to 2-pi phase for each of the p x p microwave signals actuating an active antenna. These signals originate from the coherent detection of a dual frequency laser beam obtained with an acoustooptic frequency shifter. Experimental results obtained at a microwave frequency of 1.8 GHz are presented.

Paper Details

Date Published: 2 December 1992
PDF: 9 pages
Proc. SPIE 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III, (2 December 1992); doi: 10.1117/12.138417
Show Author Affiliations
Daniel Dolfi, Thomson-CSF (France)
S. Bann, Thomson-CSF (France)
Jean-Pierre Huignard, Thomson-CSF (France)
J. Roger, Thomson-CSF (France)


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)

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