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Proceedings Paper

True time-delay photonic beamforming with fine steerability and frequency-agility for spaceborne phased-arrays: a proof-of-concept demonstration
Author(s): Dilip K. Paul; Rajender Razdan; Alfred M. Goldman
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Paper Abstract

Feasibility of photonics in beam forming and steering of large phased-array antennas onboard communications satellite/avionics systems is addressed in this paper. Specifically, a proof-of-concept demonstration of phased- array antenna feed network using fiber optic true time-delay (TTD) elements is reported for SATCOM phased-array antennas operating at C-band. Results of the photonic hardware design and performance analysis, including the measured radiation patterns of the antenna array fed by the photonic BFN, are presented. An excellent agreement between the analysis and measured data has been observed. In addition to being light- weight and compact, several unique characteristics such as rf carrier frequency agility and continuous steerability of the radiated beam achieved by the fiber optic TTD architecture are clear evidences of its superiority over other competing photonic architectures.

Paper Details

Date Published: 18 October 1996
PDF: 11 pages
Proc. SPIE 2811, Photonics for Space Environments IV, (18 October 1996); doi: 10.1117/12.254046
Show Author Affiliations
Dilip K. Paul, COMSAT Labs. (United States)
Rajender Razdan, COMSAT Labs. (United States)
Alfred M. Goldman, COMSAT World Systems (United States)


Published in SPIE Proceedings Vol. 2811:
Photonics for Space Environments IV
Edward W. Taylor, Editor(s)

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