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Proceedings Paper

Polymeric waveguide circuits for true time delay (TTD) in phased array antennas
Author(s): James J. Foshee; Suning Tang; Zan Shi; Ray T. Chen
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Paper Abstract

This paper describes a novel compact detector-switched polymeric waveguide true-time-delay (TTD) module for application in a wideband (18 - 26 GHz) phased array antenna. The use of photolithographically defined ultra-low-loss polymeric waveguide delay lines provides an attractive solution for achieving the necessary delay time over tens of nsec with ultra fine resolution of less than 1 ps. The two- dimensionally distributed waveguide grating couplers tap the optically encoded microwave signal, propagating along the polymeric channel waveguide, to high-speed photodetectors. Each photodetector is independently switched on and off to select the appropriate delay time. The optically encoded microwave signals are obtained by using a semiconductor-laser- based optical heterodyne technique. Such a monolithic integrated module could reduce the cost associated with optoelectronic packaging and also reduce the system complexity. This paper provides a description of the ongoing research activities in the development and integration of advanced polymeric circuits and packaging as a key building block of the next generation wide-bandwidth phased-array antenna system.

Paper Details

Date Published: 9 October 2000
PDF: 6 pages
Proc. SPIE 4225, Optical Interconnects for Telecommunication and Data Communications, (9 October 2000); doi: 10.1117/12.402677
Show Author Affiliations
James J. Foshee, Air Force Research Lab. (United States)
Suning Tang, Radiant Research, Inc. (United States)
Zan Shi, Radiant Research, Inc. (United States)
Ray T. Chen, Univ. of Texas/Austin (United States)

Published in SPIE Proceedings Vol. 4225:
Optical Interconnects for Telecommunication and Data Communications
Xiaomin Ren; Suning Tang, Editor(s)

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