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2.4 GHz wearable textile antenna/rectenna for simultaneous information and power transfer

2.4 GHz wearable textile antenna/rectenna for simultaneous information and power transfer
2.4 GHz wearable textile antenna/rectenna for simultaneous information and power transfer

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.

Antennas, Electronic Textile, Microstrip Antennas, RF Energy Harvesting, Rectifiers, SWIPT, Wearable Antennas, Wireless Power Transfer
IEEE
Wagih, Mahmoud
7e7b16ba-0c64-4f95-bd3c-99064055f693
Hilton, Geoffrey S.
3edc9be4-ad15-4964-8093-953874cb9d94
Weddell, Alex S.
3d8c4d63-19b1-4072-a779-84d487fd6f03
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Wagih, Mahmoud
7e7b16ba-0c64-4f95-bd3c-99064055f693
Hilton, Geoffrey S.
3edc9be4-ad15-4964-8093-953874cb9d94
Weddell, Alex S.
3d8c4d63-19b1-4072-a779-84d487fd6f03
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d

Wagih, Mahmoud, Hilton, Geoffrey S., Weddell, Alex S. and Beeby, Steve (2021) 2.4 GHz wearable textile antenna/rectenna for simultaneous information and power transfer. In 15th European Conference on Antennas and Propagation, EuCAP 2021. IEEE.. (doi:10.23919/EuCAP51087.2021.9411499).

Record type: Conference or Workshop Item (Paper)

Abstract

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.

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More information

Accepted/In Press date: 2021
e-pub ahead of print date: 27 April 2021
Published date: 27 April 2021
Additional Information: Funding Information: This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC) under Grant EP/P010164/1. Publisher Copyright: © 2021 EurAAP. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Venue - Dates: 2021 15th European Conference on Antennas and Propagation (EuCAP), , Dusseldorf, Germany, 2021-03-22 - 2021-03-26
Keywords: Antennas, Electronic Textile, Microstrip Antennas, RF Energy Harvesting, Rectifiers, SWIPT, Wearable Antennas, Wireless Power Transfer

Identifiers

Local EPrints ID: 446300
URI: http://eprints.soton.ac.uk/id/eprint/446300
PURE UUID: d1655746-c6dd-4de1-b847-4fa57b9fde52
ORCID for Mahmoud Wagih: ORCID iD orcid.org/0000-0002-7806-4333
ORCID for Alex S. Weddell: ORCID iD orcid.org/0000-0002-6763-5460
ORCID for Steve Beeby: ORCID iD orcid.org/0000-0002-0800-1759

Catalogue record

Date deposited: 04 Feb 2021 17:30
Last modified: 16 Sep 2021 11:16

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Contributors

Author: Mahmoud Wagih ORCID iD
Author: Geoffrey S. Hilton
Author: Alex S. Weddell ORCID iD
Author: Steve Beeby ORCID iD

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