The University of Southampton
University of Southampton Institutional Repository

Millimeter wave power transmission for compact and large-area wearable IoT devices based on a higher-order mode wearable antenna

Millimeter wave power transmission for compact and large-area wearable IoT devices based on a higher-order mode wearable antenna
Millimeter wave power transmission for compact and large-area wearable IoT devices based on a higher-order mode wearable antenna
Owing to the shorter wavelength in the millimeter-wave (mmWave) spectrum, miniaturized antennas can receive power with a higher efficiency than UHF bands, promising sustainable mmWave-powered Internet of Things (IoT) devices. Nevertheless, the performance of a mmWave power receiver has not been compared, numerically or experimentally, to its sub-6~GHz counterpart. In this paper, the performance of mmWave-powered receivers is evaluated based on a novel wearable textile-based higher-order mode microstrip antenna, showing the benefits of wireless power transmission (WPT). Firstly, a broadband antenna is proposed maintaining a stable wearable measured bandwidth from 24.9 to 31.1~GHz, over three-fold improvement compared to a conventional patch. The proposed antenna has a measured 8.2~dBi co-polarized gain with the highest thickness-normalized efficiency of a wearable antenna. When evaluated for compact power receivers, the measured path gain shows that WPT at 26~GHz outperforms 2.4~GHz by 11~dB. A rectenna array based on the proposed antenna is then evaluated analytically showing the potential for up to 6.3x higher power reception compared to a UHF patch, based on the proposed antenna's gain and an empirical path-loss model. Both use cases demonstrate that mmWave-powered rectennas are suitable for area-constrained and large-area wearable IoT applications.
Antenna measurements, Antennas, Bandwidth, Broadband antennas, Internet of Things, Microstrip Antennas, Microstrip antennas, Millimeter-Wave Antenna, Permittivity measurements, RF Energy Harvesting, Receiving antennas, Rectenna, Wireless Power Transfer.
2327-4662
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) Millimeter wave power transmission for compact and large-area wearable IoT devices based on a higher-order mode wearable antenna. IEEE Internet of Things Journal. (doi:10.1109/JIOT.2021.3107594).

Record type: Article

Abstract

Owing to the shorter wavelength in the millimeter-wave (mmWave) spectrum, miniaturized antennas can receive power with a higher efficiency than UHF bands, promising sustainable mmWave-powered Internet of Things (IoT) devices. Nevertheless, the performance of a mmWave power receiver has not been compared, numerically or experimentally, to its sub-6~GHz counterpart. In this paper, the performance of mmWave-powered receivers is evaluated based on a novel wearable textile-based higher-order mode microstrip antenna, showing the benefits of wireless power transmission (WPT). Firstly, a broadband antenna is proposed maintaining a stable wearable measured bandwidth from 24.9 to 31.1~GHz, over three-fold improvement compared to a conventional patch. The proposed antenna has a measured 8.2~dBi co-polarized gain with the highest thickness-normalized efficiency of a wearable antenna. When evaluated for compact power receivers, the measured path gain shows that WPT at 26~GHz outperforms 2.4~GHz by 11~dB. A rectenna array based on the proposed antenna is then evaluated analytically showing the potential for up to 6.3x higher power reception compared to a UHF patch, based on the proposed antenna's gain and an empirical path-loss model. Both use cases demonstrate that mmWave-powered rectennas are suitable for area-constrained and large-area wearable IoT applications.

Text
Wagih_JIOT2021_mmWave_WPT_Wearable_IoT - Accepted Manuscript
Download (3MB)

More information

Accepted/In Press date: 23 August 2021
e-pub ahead of print date: 25 August 2021
Published date: 25 August 2021
Keywords: Antenna measurements, Antennas, Bandwidth, Broadband antennas, Internet of Things, Microstrip Antennas, Microstrip antennas, Millimeter-Wave Antenna, Permittivity measurements, RF Energy Harvesting, Receiving antennas, Rectenna, Wireless Power Transfer.

Identifiers

Local EPrints ID: 451027
URI: http://eprints.soton.ac.uk/id/eprint/451027
ISSN: 2327-4662
PURE UUID: 0bd4da6d-1b3d-4f7a-a7bf-496424cfce91
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: 03 Sep 2021 16:31
Last modified: 15 Oct 2024 02:01

Export record

Altmetrics

Contributors

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

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×