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Dual-band dual-mode textile antenna/rectenna for Simultaneous Wireless Information and Power Transfer (SWIPT)

Dual-band dual-mode textile antenna/rectenna for Simultaneous Wireless Information and Power Transfer (SWIPT)
Dual-band dual-mode textile antenna/rectenna for Simultaneous Wireless Information and Power Transfer (SWIPT)
This paper presents a textile antenna for dual-band wearable Simultaneous Wireless Information and Power Transfer (SWIPT). The antenna operates as a 2.4 GHz off-body communications antenna and a sub-1 GHz (785-875 MHz) broad-beam rectenna. Incorporated within the broadside microstrip antenna is a high-impedance rectenna for sub-1 GHz power harvesting. Utilizing antenna-rectifier co-design, the rectenna eliminates the rectifier matching network. The textile antenna is fabricated on a felt substrate and utilizes conductive fabrics for the antenna. At 2.4 GHz, the antenna achieves a realized gain of 7.2 dBi on a body phantom and a minimum radiation efficiency of 63%, with and without the rectifier. The rectenna achieves a best-in-class RF to DC efficiency of 62% from 0.8 µWcm2, representing over 25\% improvement over state-of-the-art textile rectennas and demonstrating that SWIPT does not detrimentally affect the energy harvesting or communications performance. The antenna/rectenna occupies an electrically-small area of 0.213x0.19 λ2. This antenna is the first dual-band, dual-mode antenna demonstrated on textiles for SWIPT applications and the first matching network-free SWIPT rectenna.
MIMO, SWIPT, Wireless Power Transfer, antenna-rectifier co-design, energy harvesting, microstrip antennas, microstrip rectennas, on-body antenna, rectenna, wearable antennas, wearable rectennas, wireless power transmission
0018-926X
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-band dual-mode textile antenna/rectenna for Simultaneous Wireless Information and Power Transfer (SWIPT). IEEE Transactions on Antennas and Propagation, 69. (doi:10.1109/TAP.2021.3070230). (In Press)

Record type: Article

Abstract

This paper presents a textile antenna for dual-band wearable Simultaneous Wireless Information and Power Transfer (SWIPT). The antenna operates as a 2.4 GHz off-body communications antenna and a sub-1 GHz (785-875 MHz) broad-beam rectenna. Incorporated within the broadside microstrip antenna is a high-impedance rectenna for sub-1 GHz power harvesting. Utilizing antenna-rectifier co-design, the rectenna eliminates the rectifier matching network. The textile antenna is fabricated on a felt substrate and utilizes conductive fabrics for the antenna. At 2.4 GHz, the antenna achieves a realized gain of 7.2 dBi on a body phantom and a minimum radiation efficiency of 63%, with and without the rectifier. The rectenna achieves a best-in-class RF to DC efficiency of 62% from 0.8 µWcm2, representing over 25\% improvement over state-of-the-art textile rectennas and demonstrating that SWIPT does not detrimentally affect the energy harvesting or communications performance. The antenna/rectenna occupies an electrically-small area of 0.213x0.19 λ2. This antenna is the first dual-band, dual-mode antenna demonstrated on textiles for SWIPT applications and the first matching network-free SWIPT rectenna.

Text
MWagih_2021_TAP_TextileSWIPT - Accepted Manuscript
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More information

Accepted/In Press date: 13 March 2021
Keywords: MIMO, SWIPT, Wireless Power Transfer, antenna-rectifier co-design, energy harvesting, microstrip antennas, microstrip rectennas, on-body antenna, rectenna, wearable antennas, wearable rectennas, wireless power transmission

Identifiers

Local EPrints ID: 447961
URI: http://eprints.soton.ac.uk/id/eprint/447961
ISSN: 0018-926X
PURE UUID: 91b2e3c7-a26e-4054-811c-0ef99db3b7b4
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 Mar 2021 16:30
Last modified: 17 Jul 2021 02:10

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