A Resonant Reactive Shielding for Planar Wireless Power Transfer System in Smartphone Application

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Demand and interest in wireless power transfer (WPT) have been rapidly increasing lately. However, WPT systems have problems with electromagnetic field (EMF) leakage, which has stimulated interest in methods to suppress EMF leakage levels. In this paper, we propose a compact resonant reactive shielding coil topology for reducing EMF in a near-field WPT mobile device application. The proposed shielding coil employs a closed loop and matching capacitors, and is demonstrated to dramatically reduce the leakage magnetic field from aWPT system. For validation, the proposed shielding was implemented with other shielding topologies and the EMFs were measured and compared. The analytical, simulation, and measurement results were all strongly correlated.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2017-04
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, v.59, no.2, pp.695 - 703

ISSN
0018-9375
DOI
10.1109/TEMC.2016.2636863
URI
http://hdl.handle.net/10203/222682
Appears in Collection
GT-Journal Papers(저널논문)
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