2.4 GHz Wearable Textile Antenna/Rectenna for Simultaneous Information and Power Transfer

Wagih, M. , Hilton, G. S., Weddell, A. and Beeby, S. (2021) 2.4 GHz Wearable Textile Antenna/Rectenna for Simultaneous Information and Power Transfer. In: 15th European Conference on Antennas and Propagation (EuCAP 2021), Dusseldorf, Germany, 22-26 March 2021, ISBN 9788831299022 (doi: 10.23919/EuCAP51087.2021.9411499)

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Publisher's URL: https://doi.org/10.23919/EuCAP51087.2021.9411499


Antennas and rectennas for self-powered body area networks (BANs) have attracted significant interest, in an effort to improve the sustainability of e-textiles. This paper presents a novel dual-port fully-textile antenna, based on a simple microstrip patch, for simultaneous wireless information and power transfer (SWIPT) at 2.4 GHz, presenting the first antenna-rectifier co-design implementation for SWIPT. The proposed antenna's input bandwidth covers the license-free band achieving 8.9 dBi measured directivity and 41% efficiency at 2.4 GHz, with a simple proximity-coupled microstrip feed. For power harvesting, port 2 is designed to achieve a scalable complex impedance to directly match the rectifier without a separate matching network, and achieves 6.3 dBi off-body gain. The proposed rectenna feed improves the antenna's isolation by at least 15 dB compared to a microstrip feed similar to port 1. The rectenna achieves over 40% power conversion efficiency (PCE) from -10 dBm, when placed directly on-body, with a 71% peak PCE.

Item Type:Conference Proceedings
Additional Information:This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC) under Grant EP/P010164/1.
Keywords:Antennas, Electronic Textile, Microstrip Antennas, RF Energy Harvesting, Rectifiers, SWIPT, Wearable Antennas, Wireless Power Transfer
Glasgow Author(s) Enlighten ID:Wagih, Dr Mahmoud
Authors: Wagih, M., Hilton, G. S., Weddell, A., and Beeby, S.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:15th European Conference on Antennas and Propagation, EuCAP 2021
Published Online:27 April 2021
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