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The first demonstration of an optically steered microwave phased array antenna using true-time-delay

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6 Author(s)
Ng, W. ; Hughes Res. Lab., Malibu, CA, USA ; Walston, A.A. ; Tangonan, G.L. ; Lee, J.J.
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The concept of true-time-delay steering for phased array antennas and its advantage over phase shifters in broadband applications are described with particular emphasis on the potential advantages offered by fiber-optic delay lines. The system architecture of the phased array antenna and the design and performance of the fiber-optic time-shifter networks in the antenna are described. The radiation patterns of the phased array antenna at L and X bands are presented. Using semiconductor laser switching to implement the delay times, the absence of beam squint in the antenna pattern and its frequency was switched from L to X band is demonstrated

Published in:

Lightwave Technology, Journal of  (Volume:9 ,  Issue: 9 )

Date of Publication:

Sep 1991

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