Wagih, M. , Komolafe, A., Weddell, A. S. and Beeby, S. (2022) 1 μW-3.75 W Dual-mode Near/far-field Wearable Wireless Power Transfer Using a Hybrid Rectenna. In: IEEE Wireless Power Week (WPW 2022), Bordeaux, France, 05-08 Jul 2022, ISBN 9781665484459 (doi: 10.1109/WPW54272.2022.9853859)
![[img]](https://eprints.gla.ac.uk/style/images/fileicons/text.png) |
Text
272167.pdf - Accepted Version 1MB |
Abstract
While far-field wireless power transfer (WPT) promises a long range of operation, it falls short on the DC power which can be provided. On the other, hand resonant near-field WPT suffers from a short wireless range. In this work, a dualmode high/low-power near/far-field rectenna is demonstrated for the first time based on a flexible rectifier and a textile antenna. Based on a high-efficiency single-series rectifier, the far-field rectenna achieves a peak efficiency of 42.7% from an ultralow power density of 0.43 μW/cm2, with a 1 V DC output from 4 μW/cm2. A high-power 6.78 MHz bridge rectifier is designed and implemented on a flexible textile-based substrate with a 10 dB return loss for inputs above 15 dBm. As a near-field receiver, the antenna could receive 3.75 W DC power at 5 cm from the transmitting coil, with an end-to-end efficiency of 30% inclusive of rectifier, coils, and power amplifier losses. Based on the proposed dual-mode antenna, textile-based wearables could be wirelessly powered dynamically using resonant near-field and radiative near-field WPT.
| Item Type: | Conference Proceedings |
|---|---|
| Keywords: | WPT, SAR, low-power, wireless power transfer, hybrid wireless power, dual-mode, multi-mode WPT, simultaneous near and far-field WPT, rectennas, coils, antennas, rectifiers, high-power WPT, wearable WPT, battery-free wearables, MR-WPT, magnetic resonant power transfer, near-field WPT, far-field WPT, wireless charging. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Wagih, Dr Mahmoud |
| Authors: | Wagih, M., Komolafe, A., Weddell, A. S., and Beeby, S. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | IEEE Wireless Power Week (WPW 2022) |
| Publisher: | IEEE |
| ISBN: | 9781665484459 |
| Copyright Holders: | Copyright © 2022 IEEE |
| First Published: | First published in 2022 Wireless Power Week (WPW) |
| Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
| Related URLs: |
University Staff: Request a correction | Enlighten Editors: Update this record
Deposit and Record Details
Deposit and Record Details