A multimode metamaterial for a compact and robust dualband wireless power transfer system

Abstract To release more flexibility for users to charge their portable devices, researchers have increasingly developed compact wireless power transfer (WPT) systems in recent years. Also, a dual-band WPT system is proposed to transfer power and signal simultaneously, enriching the system’s functio...

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Autores principales:	Xin Jiang, Ramesh K. Pokharel, Adel Barakat, Kuniaki Yoshitomi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1bb0961df2e64f53ba0013eb880185ba
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spelling	oai:doaj.org-article:1bb0961df2e64f53ba0013eb880185ba2021-11-14T12:17:26ZA multimode metamaterial for a compact and robust dualband wireless power transfer system10.1038/s41598-021-01677-62045-2322https://doaj.org/article/1bb0961df2e64f53ba0013eb880185ba2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01677-6https://doaj.org/toc/2045-2322Abstract To release more flexibility for users to charge their portable devices, researchers have increasingly developed compact wireless power transfer (WPT) systems in recent years. Also, a dual-band WPT system is proposed to transfer power and signal simultaneously, enriching the system’s functionality. Moreover, a stacked metasurface has recently been proposed for a single band near-field WPT system. In this study, a novel multimode self-resonance-enhanced wideband metasurface is proposed for a robust dual-band WPT system, which significantly improves the performance of both bands. The size of the transmitter (Tx) and the receiver (Rx) are both 15 mm × 15 mm only. The proposed metasurface can improve efficiency from 0.04 up to 39% in the best case. The measured figure of merit (FoM) is 2.09 at 390 MHz and 2.16 at 770 MHz, respectively, in the balanced mode. Especially, the FoM can reach up to 4.34 in the lower mode. Compared to the previous state-of-the-art for similar applications, the WPT performance has significantly been improved.Xin JiangRamesh K. PokharelAdel BarakatKuniaki YoshitomiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xin Jiang Ramesh K. Pokharel Adel Barakat Kuniaki Yoshitomi A multimode metamaterial for a compact and robust dualband wireless power transfer system
description	Abstract To release more flexibility for users to charge their portable devices, researchers have increasingly developed compact wireless power transfer (WPT) systems in recent years. Also, a dual-band WPT system is proposed to transfer power and signal simultaneously, enriching the system’s functionality. Moreover, a stacked metasurface has recently been proposed for a single band near-field WPT system. In this study, a novel multimode self-resonance-enhanced wideband metasurface is proposed for a robust dual-band WPT system, which significantly improves the performance of both bands. The size of the transmitter (Tx) and the receiver (Rx) are both 15 mm × 15 mm only. The proposed metasurface can improve efficiency from 0.04 up to 39% in the best case. The measured figure of merit (FoM) is 2.09 at 390 MHz and 2.16 at 770 MHz, respectively, in the balanced mode. Especially, the FoM can reach up to 4.34 in the lower mode. Compared to the previous state-of-the-art for similar applications, the WPT performance has significantly been improved.
format	article
author	Xin Jiang Ramesh K. Pokharel Adel Barakat Kuniaki Yoshitomi
author_facet	Xin Jiang Ramesh K. Pokharel Adel Barakat Kuniaki Yoshitomi
author_sort	Xin Jiang
title	A multimode metamaterial for a compact and robust dualband wireless power transfer system
title_short	A multimode metamaterial for a compact and robust dualband wireless power transfer system
title_full	A multimode metamaterial for a compact and robust dualband wireless power transfer system
title_fullStr	A multimode metamaterial for a compact and robust dualband wireless power transfer system
title_full_unstemmed	A multimode metamaterial for a compact and robust dualband wireless power transfer system
title_sort	multimode metamaterial for a compact and robust dualband wireless power transfer system
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1bb0961df2e64f53ba0013eb880185ba
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A multimode metamaterial for a compact and robust dualband wireless power transfer system

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