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Proceedings Paper

Photonic true time delay module for high-frequency broadband phased array antenna
Author(s): Yihong Chen; Ray T. Chen
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Paper Abstract

A 2D true-time delay (TTD) module for phased-array antennas (PAAs) is presented, which is based on substrate-guided wave elements. We use substrates of different thickness to get time delays as small as needed. We also use coated wedge to substitute input hologram element to decrease losses up to 60%. Also, a step is designed to obtain 0 degree steering which is impossible for packaging in the previous design. We designed special delay steps to avoid the side lobe caused by the limitation of the distance between adjacent antenna elements. The simulation results were given for the far- field radiation pattern of PAA controlled by this module. Experimental results of the TTD module are shown in both 2D and 3D images.

Paper Details

Date Published: 30 May 2001
PDF: 7 pages
Proc. SPIE 4292, Optoelectronic Interconnects VIII, (30 May 2001); doi: 10.1117/12.428030
Show Author Affiliations
Yihong Chen, Univ. of Texas at Austin (United States)
Ray T. Chen, Univ. of Texas at Austin (United States)

Published in SPIE Proceedings Vol. 4292:
Optoelectronic Interconnects VIII
Suning Tang; Yao Li, Editor(s)

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