Photonic true time delay module for high-frequency broadband phased array antenna

Yihong Chen; Ray T. Chen

doi:10.1117/12.428030

30 May 2001 Photonic true time delay module for high-frequency broadband phased array antenna

Yihong Chen, Ray T. Chen

Proceedings Volume 4292, Optoelectronic Interconnects VIII; (2001) https://doi.org/10.1117/12.428030
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

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.

Citation Download Citation

Yihong Chen and Ray T. Chen "Photonic true time delay module for high-frequency broadband phased array antenna", Proc. SPIE 4292, Optoelectronic Interconnects VIII, (30 May 2001); https://doi.org/10.1117/12.428030

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