Towards Wearable Wireless Power Harvesting using Clothing-Integrated Beamforming Structures

Wagih, M. , Khan, M. R., Bhardwaj, S. and Vital, D. (2022) Towards Wearable Wireless Power Harvesting using Clothing-Integrated Beamforming Structures. In: 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Denver, CO, USA, 10-15 Jul 2022, pp. 1032-1033. ISBN 9781665496582 (doi: 10.1109/AP-S/USNC-URSI47032.2022.9887178)

Abstract

High-gain wide-beam off-body wearable antennas are essential for efficient wearable RF energy harvesting (RFEH). Here, we report a 5.8-GHz reflector-backed Yagi-inspired antenna with over 2 dB gain and efficiency improvement over a conventional Yagi. Using the reflector, the end-fire patterns are re-directed in the broadside off-body direction while maintaining a simulated 76% efficiency. To demonstrate the feasibility of high-gain RFEH, a beam-forming Rotman lens is designed with a relatively low insertion loss based on conventional fabrics with conductive surfaces designed to be implemented via the automated embroidery of conductive threads. This work is a stepping stone to clothing-integrated low-profile beamforming for sub-6 GHz 5G/6G applications.

• Item Type: Conference Proceedings
• Keywords: Beamforming, rectenna, RFID, rf energy harvesting, wireless power transmission, WPT, wireless power transfer, omnidirectional, multi-beam energy harvesting, high-gain, textile antenna, wearable antenna, flexible antenna, wearable energy harvesting, wearable rectenna, high-gain rectenna.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Wagih, Dr Mahmoud
• Authors: Wagih, M., Khan, M. R., Bhardwaj, S., and Vital, D.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Research Group: Communication Sensing and Imaging
• ISSN: 1947-1491
• ISBN: 9781665496582
• Copyright Holders: Copyright © 2022 IEEE
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher

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• Organisation

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
		Radio Frequency-Enabled Multi-Source Energy Harvesting in Inaccessible Locations	Mahmoud Wagih	Royal Academy of Engineering	UNSPECIFIED