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Design of a Loop Resonator with Improved Power Transmission Efficiency Using a Ferrite Plate
Department of Electronics and Computer Engineering, Hanyang University, Seoul, South Korea
Moasoft Co., Ltd., Seoul, South Korea
Department of Electronic engineering, Kookmin University, Seoul, South Korea
Department of Telecommunication, Soongsil University, Seoul, South Korea
School of Electronic and Electrical Engineering, Hongik University, Seoul, South Korea
- 1 Department of Electronics and Computer Engineering, Hanyang University, Seoul, South Korea
- 2 Moasoft Co., Ltd., Seoul, South Korea
- 3 Department of Electronic engineering, Kookmin University, Seoul, South Korea
- 4 Department of Telecommunication, Soongsil University, Seoul, South Korea
- 5 School of Electronic and Electrical Engineering, Hongik University, Seoul, South Korea
Journal of Electromagnetic Analysis and Applications·Volume 05 (2013)·Pages 196–200·Published 20 May 2013·DOI10.4236/jemaa.2013.55031
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Abstract
We propose a novel resonator that can reduce magnetic field leakage using a ferrite plate. The proposed resonator consists of a rectangular loop, a ferrite plate, and an L-matching network. The ferrite plate is used as an H-field reflector to direct more H-field to each resonator, and the L-matching network is employed to match the 50 Ω of the feed cable at 13.56 MHz. Two identical resonators with dimensions of 30 cm × 15 cm are separated by 50 cm, and the resulting transmission efficiency is about ? 12.3 dB at 13.56 MHz. This is about 4.2 dB higher than the resonators without the ferrite plate.
KeywordsFerrite PlateLoop ResonatorWireless Power Transmission
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