Journal
PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER
Volume 124, Issue -, Pages 211-231Publisher
EMW PUBLISHING
DOI: 10.2528/PIER11120511
Keywords
-
Funding
- KCC (Korea Communications Commission), Korea [KCA-2011-11911-01110]
- Korea Science and Engineering Foundation (KOSEF)
- Korea government (MEST) [2011-0003543]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available