Phased Array-Free Multi-Directional 5.8 GHz Wireless Power Transmission Using A Fresnel Lens

Wagih, M. , Whittaker, T. and Whittow, W. G. (2023) Phased Array-Free Multi-Directional 5.8 GHz Wireless Power Transmission Using A Fresnel Lens. In: 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Portland, Oregon, USA, 23–28 July 2023, pp. 541-542. ISBN 9781665442282 (doi: 10.1109/USNC-URSI52151.2023.10237659)

Abstract

Steerable arrays are often developed based on complex phased arrays or lossy beamforming networks, making them unsuitable for pervasive wireless power transmission (WPT) applications. Here we propose the first sub-6 GHz quasi-optical beam-steering WPT dielectric lens-based system. The lens has an area of 16.6λ20 with a height of 0.83λ0 , achieving an aperture efficiency of 44.7% and a gain improvement of 10 to 14 dB from 5.2 to 6.5 GHz. A±60∘ beam-scanning angle is achieved with linear feed displacements, resulting in a 1 Steradian half-power beamwidth. The proposed design could enable switchable and multi-beam transmitters, with broad-beam high-gain rectennas.

• Item Type: Conference Proceedings
• Additional Information: This work was supported by the UK RAEng and the Office of the Chief Science Adviser for National Security under the UK Intelligence Community Research Fellowship programme, and by the UK EPSRC under “ANISAT” EP/S030301/1.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Wagih, Dr Mahmoud
• Authors: Wagih, M., Whittaker, T., and Whittow, W. G.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• ISSN: 1947-1491
• ISBN: 9781665442282
• Published Online: 07 September 2023
• Copyright Holders: Copyright © 2023 IEEE
• First Published: First published in 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting: 541-542
• Publisher Policy: Reproduced in accordance with the publisher copyright policy