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PIER PIER B PIER C PIER M PIER Letters
2012-01-19
HF-Band Wireless Power Transfer System: Concept, Issues, and Design
By
Byung-Jun Jang,

    Dr. Byung-Jun Jang

    Department of Electrical Engineering

    Kookmin University

    Korea

    Homepage

Seongjoo Lee,

    Dr. Seongjoo Lee

    Sejong University

    South Korea

    Homepage

Hyungoo Yoon

    Dr. Hyungoo Yoon

    Dept. Computer and Electronic Eng.

    Myongji College

    Korea

    Homepage

Progress In Electromagnetics Research, Vol. 124, 211-231, 2012
doi:10.2528/PIER11120511
Abstract
High-frequency (HF) band wireless power transfer systems offer the promise of cutting the last cord, allowing users to seamlessly recharge mobile devices as easily as wireless communication. Yet there are still many technical issues that need to be overcome. Among them, one of the most difficult problems is maintaining impedance match over a short range, where the distance between a transmitter and receiver could vary. In this paper, the effect of impedance mismatch of a HF-band wireless power transfer system is carefully investigated and two compensation methods are suggested to overcome this within a short range, where frequent impedance mismatch can occur. Each method has pros and cons. In order to verify the feasibility of the proposed methods, HF-band wireless power transfer systems, with a pair of rectangular loop resonators, were designed. The efficiency and input impedance variation were simulated and measured. From these results, proposed methods show enhanced efficiency performance than a typical wireless power transfer system without any compensation circuits.
Citation
Byung-Jun Jang, Seongjoo Lee, and Hyungoo Yoon, "HF-Band Wireless Power Transfer System: Concept, Issues, and Design," Progress In Electromagnetics Research, Vol. 124, 211-231, 2012.
doi:10.2528/PIER11120511
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