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Dual-polarized wearable antenna/rectenna for full-duplex and MIMO Simultaneous Wireless Information and Power Transfer (SWIPT)

Dual-polarized wearable antenna/rectenna for full-duplex and MIMO Simultaneous Wireless Information and Power Transfer (SWIPT)
Dual-polarized wearable antenna/rectenna for full-duplex and MIMO Simultaneous Wireless Information and Power Transfer (SWIPT)
Owing to the mobility of a wearable antenna and the unpredictable body-centric communications environment, dual-polarization antennas are essential for both communications and energy harvesting. This paper presents a dual-polarized four-port textile antenna/rectenna for wearable simultaneous wireless information and power transfer (SWIPT) applications. The proposed antenna utilizes dual ports for both off-body communication and energy harvesting from horizontal and vertical polarizations. The antenna maintains a 100 MHz bandwidth with an S11 under -10 dB around 2.4 GHz in the presence and absence of the human body, and at least 10 dB small-signal and large-signal isolation between all ports. The antenna maintains a 70-88% measured total efficiency and 8.4-9.6 dBi gain for various on-phantom positions across both communication ports. The measured mutual coupling is under -10 dB between co-polarized rectenna/antenna ports, and under -16 dB between orthogonally-polarized ports. A high RF to DC peak power conversion efficiency of over 70% (±5%) is achieved with a broadside harvesting pattern. Based on the proposed antenna's performance, SWIPT microstrip antennas can be adopted for both full-duplex and MIMO applications, significantly reducing the complexity of future battery-free networks for both wearable and non-wearable applications.
Antennas, Body area networks, E-textiles, Microstrip antennas, Microwave power transmission, Multi-in multi-out (mimo) antennas, Rectennas, Rectifiers, Wearable antennas
2637-6431
844-857
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) Dual-polarized wearable antenna/rectenna for full-duplex and MIMO Simultaneous Wireless Information and Power Transfer (SWIPT). IEEE Open Journal of Antennas and Propagation, 2, 844-857, [9492275]. (doi:10.1109/OJAP.2021.3098939).

Record type: Article

Abstract

Owing to the mobility of a wearable antenna and the unpredictable body-centric communications environment, dual-polarization antennas are essential for both communications and energy harvesting. This paper presents a dual-polarized four-port textile antenna/rectenna for wearable simultaneous wireless information and power transfer (SWIPT) applications. The proposed antenna utilizes dual ports for both off-body communication and energy harvesting from horizontal and vertical polarizations. The antenna maintains a 100 MHz bandwidth with an S11 under -10 dB around 2.4 GHz in the presence and absence of the human body, and at least 10 dB small-signal and large-signal isolation between all ports. The antenna maintains a 70-88% measured total efficiency and 8.4-9.6 dBi gain for various on-phantom positions across both communication ports. The measured mutual coupling is under -10 dB between co-polarized rectenna/antenna ports, and under -16 dB between orthogonally-polarized ports. A high RF to DC peak power conversion efficiency of over 70% (±5%) is achieved with a broadside harvesting pattern. Based on the proposed antenna's performance, SWIPT microstrip antennas can be adopted for both full-duplex and MIMO applications, significantly reducing the complexity of future battery-free networks for both wearable and non-wearable applications.

Text
MWagih_OJAP21_SWIPT_DuplexMIMO_Rectenna - Version of Record
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More information

Accepted/In Press date: 16 July 2021
e-pub ahead of print date: 21 July 2021
Published date: 21 July 2021
Additional Information: Publisher Copyright: © 2020 IEEE. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Keywords: Antennas, Body area networks, E-textiles, Microstrip antennas, Microwave power transmission, Multi-in multi-out (mimo) antennas, Rectennas, Rectifiers, Wearable antennas

Identifiers

Local EPrints ID: 450470
URI: http://eprints.soton.ac.uk/id/eprint/450470
ISSN: 2637-6431
PURE UUID: 0576e178-14b8-400e-8c93-8d08049709f4
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: 29 Jul 2021 16:30
Last modified: 25 Jun 2022 02:03

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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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