Holographic Rotman lens for phased-array antenna beam forming

David D. Curtis

doi:10.1117/12.212702

30 June 1995 Holographic Rotman lens for phased-array antenna beam forming

David D. Curtis

Proceedings Volume 2481, Photonic Device Engineering for Dual-Use Applications; (1995) https://doi.org/10.1117/12.212702
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

This paper introduces an optical implementation of the classic Rotman lens beamformer for use in ultra-wideband array antenna beamforming applications. The optical version described here features volume holograms as lens ports, arranged on geometric contours which follow modified Rotman's lens design equations. Modification of Rotman's lens equations, modeling of ray propagation in the lens, and the design process for this holographic Rotman lens are described in detail. Currently, a free-space experiment is in process to validate this design at 10 GHz, and to provide insight on the use of diffractive optics technology for millimeter-wave applications. Experimental results will be reported in detail in the near future.

Citation Download Citation

David D. Curtis "Holographic Rotman lens for phased-array antenna beam forming", Proc. SPIE 2481, Photonic Device Engineering for Dual-Use Applications, (30 June 1995); https://doi.org/10.1117/12.212702

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