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Proceedings Paper

Reconfigurable true-time delay for wideband phased-array antennas
Author(s): Yihong Chen; Kevin Wu; Feng Zhao; Gicherl Kim; Ray T. Chen
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Paper Abstract

A novel reconfigurable true-time delay feed for phased-array antennas working from X to Q (8-50GHz) frequency bands is presented. The reconfigurable optical true-time delay feed, employing monolithic integration of polymer waveguide delay lines and polymeric optical switches, has great advantages in providing power efficient, lightweight, and small size features. Optical switch technique provides large delay selections enabling the module to operate in ultra-broad radar bands. Polymer waveguides with optical propagation loss of less than 0.9dB/cm were achieved at 1550nm. 2X2 thermo-optic switchs as fast as 1ms were fabricated with an excess insertion loss of 0.5 dB in the “switching state” and 1.5dB in the “non-switching state”. Reconfigurability of the true-time delay line was demonstrated through accurate time delay measurement.

Paper Details

Date Published: 25 June 2004
PDF: 6 pages
Proc. SPIE 5363, Emerging Optoelectronic Applications, (25 June 2004); doi: 10.1117/12.549229
Show Author Affiliations
Yihong Chen, Omega Optics, Inc. (United States)
Kevin Wu, Omega Optics, Inc. (United States)
Feng Zhao, Omega Optics, Inc. (United States)
Gicherl Kim, Omega Optics, Inc. (United States)
Ray T. Chen, Univ. of Texas/Austin (United States)


Published in SPIE Proceedings Vol. 5363:
Emerging Optoelectronic Applications
Ghassan E. Jabbour; Juha T. Rantala, Editor(s)

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