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Flexible Magnetic Metasurface with Defect Cavity for Wireless Power Transfer System

In this paper, we present a flexible magnetic metamaterial structure for enhancing the efficiency of wireless power transfer (WPT) systems operating at 13.56 MHz. The metasurface between transmitter (Tx) and receiver (Rx) coils of the WPT system is constructed of a 3 × 5 metamaterial unit cell array...

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Autores principales: Hiep, Le Thi Hong, Khuyen, Bui Xuan, Tung, Bui Son, Ngo, Quang Minh, Lam, Vu Dinh, Pham, Thanh Son
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9570919/
https://www.ncbi.nlm.nih.gov/pubmed/36233923
http://dx.doi.org/10.3390/ma15196583
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author Hiep, Le Thi Hong
Khuyen, Bui Xuan
Tung, Bui Son
Ngo, Quang Minh
Lam, Vu Dinh
Pham, Thanh Son
author_facet Hiep, Le Thi Hong
Khuyen, Bui Xuan
Tung, Bui Son
Ngo, Quang Minh
Lam, Vu Dinh
Pham, Thanh Son
author_sort Hiep, Le Thi Hong
collection PubMed
description In this paper, we present a flexible magnetic metamaterial structure for enhancing the efficiency of wireless power transfer (WPT) systems operating at 13.56 MHz. The metasurface between transmitter (Tx) and receiver (Rx) coils of the WPT system is constructed of a 3 × 5 metamaterial unit cell array with a total size of 150 × 300 mm(2). Most metamaterial structures integrated into WPT systems are in planar configurations with a rigid substrate, which limits practical applications. The proposed metasurface is fabricated on an FR-4 substrate with a thin thickness of 0.2 mm; therefore, it can be bent with radii greater than 80 mm. A defect cavity is formed in the non-homogeneous metasurface by controlling the resonant frequency of the unit cell with an external capacitor. Simulation and measurement results show that the efficiency of the WPT system is significantly enhanced with metasurfaces. The performance of the WPT system can also be optimized with suitable bend profiles of metasurfaces. This proposed flexible metasurface could be widely applied to WPT systems, especially asymmetric, bendable, or wearable WPT systems.
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spelling pubmed-95709192022-10-17 Flexible Magnetic Metasurface with Defect Cavity for Wireless Power Transfer System Hiep, Le Thi Hong Khuyen, Bui Xuan Tung, Bui Son Ngo, Quang Minh Lam, Vu Dinh Pham, Thanh Son Materials (Basel) Article In this paper, we present a flexible magnetic metamaterial structure for enhancing the efficiency of wireless power transfer (WPT) systems operating at 13.56 MHz. The metasurface between transmitter (Tx) and receiver (Rx) coils of the WPT system is constructed of a 3 × 5 metamaterial unit cell array with a total size of 150 × 300 mm(2). Most metamaterial structures integrated into WPT systems are in planar configurations with a rigid substrate, which limits practical applications. The proposed metasurface is fabricated on an FR-4 substrate with a thin thickness of 0.2 mm; therefore, it can be bent with radii greater than 80 mm. A defect cavity is formed in the non-homogeneous metasurface by controlling the resonant frequency of the unit cell with an external capacitor. Simulation and measurement results show that the efficiency of the WPT system is significantly enhanced with metasurfaces. The performance of the WPT system can also be optimized with suitable bend profiles of metasurfaces. This proposed flexible metasurface could be widely applied to WPT systems, especially asymmetric, bendable, or wearable WPT systems. MDPI 2022-09-22 /pmc/articles/PMC9570919/ /pubmed/36233923 http://dx.doi.org/10.3390/ma15196583 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hiep, Le Thi Hong
Khuyen, Bui Xuan
Tung, Bui Son
Ngo, Quang Minh
Lam, Vu Dinh
Pham, Thanh Son
Flexible Magnetic Metasurface with Defect Cavity for Wireless Power Transfer System
title Flexible Magnetic Metasurface with Defect Cavity for Wireless Power Transfer System
title_full Flexible Magnetic Metasurface with Defect Cavity for Wireless Power Transfer System
title_fullStr Flexible Magnetic Metasurface with Defect Cavity for Wireless Power Transfer System
title_full_unstemmed Flexible Magnetic Metasurface with Defect Cavity for Wireless Power Transfer System
title_short Flexible Magnetic Metasurface with Defect Cavity for Wireless Power Transfer System
title_sort flexible magnetic metasurface with defect cavity for wireless power transfer system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9570919/
https://www.ncbi.nlm.nih.gov/pubmed/36233923
http://dx.doi.org/10.3390/ma15196583
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