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International Journal of Antennas and Propagation
Volume 2017, Article ID 7932434, 8 pages
https://doi.org/10.1155/2017/7932434
Research Article

Beam-Steering Performance of Flat Luneburg Lens at 60 GHz for Future Wireless Communications

1School of Electronic Engineering and Computer Science, Queen Mary University of London, London E1 4NS, UK
2QinetiQ, Cody Technology Park, Ively Road, Farnborough GU14 0LX, UK

Correspondence should be addressed to Yang Hao; ku.ca.lumq@oah.y

Received 17 February 2017; Accepted 27 June 2017; Published 2 August 2017

Academic Editor: Davide Ramaccia

Copyright © 2017 Robert Foster et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The beam-steering capabilities of a simplified flat Luneburg lens are reported at 60 GHz. The design of the lens is first described, using transformation electromagnetics, before discussion of the fabrication of the lens using casting of ceramic composites. The simulated beam-steering performance is shown, demonstrating that the lens, with only six layers and a highest permittivity of 12, achieves scan angles of 30° with gains of at least 18 dBi over a bandwidth from 57 to 66 GHz. To verify the simulations and further demonstrate the broadband nature of the lens, raw high definition video was transmitted over a wireless link at scan angles up to 36°.