A Dual-Band Negative Permeability and Near-Zero Permeability Metamaterials for Wireless Power Transfer System

A contactless energy charging platform is an emerging technology that can improve the conveniences of electronic charging devices. This article presents a novel asymmetric wireless power transfer (WPT) system by integrating with two kinds of dual-band metamaterials, which is suitable for recharging...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2021-08, Vol.68 (8), p.7072-7082
Main Authors: Lu, Conghui, Huang, Xiutao, Rong, Cancan, Tao, Xiong, Zeng, Yingqin, Liu, Minghai
Format: Article
Language:English
Subjects:
Aluminum
Charging
Dual band
Dual-band negative permeability (DB-MNG)
Electronic devices
improve efficiency
Magnetic fields
Magnetic materials
Metal sheets
Metamaterials
near-zero permeability (DB-MNZ)
New technology
Permeability
Portable equipment
Receivers
reduce magnetic field
Resonators
wireless power transfer (WPT)
Wireless power transmission
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Summary:A contactless energy charging platform is an emerging technology that can improve the conveniences of electronic charging devices. This article presents a novel asymmetric wireless power transfer (WPT) system by integrating with two kinds of dual-band metamaterials, which is suitable for recharging the portable electronic devices. The design key of the metamaterial is to achieve the dual-band negative permeability (DB-MNG) and near-zero permeability (DB-MNZ) for enhancing efficiency and reducing leakage magnetic field of the WPT system, simultaneously. Especially, the corresponding simulation and experimentation are carried out to verify the validity of the DB-MNG metamaterial for increasing the efficiency at 13.56 and 27.12 MHz. Moreover, considering the charging environment of portable devices, various misalignments between the device and DB-MNG metamaterial are discussed to maintain continuous power availability. Meanwhile, the dual-band shielding performance of DB-MNZ metamaterial is proved at 13.56 and 27.12 MHz. As a result, the DB-MNZ metamaterial shield performs better than ferrite sheet and its performance is similar to that of aluminum sheet.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2020.3009608