Share This Article:

Design of a Loop Resonator with Improved Power Transmission Efficiency Using a Ferrite Plate

Abstract Full-Text HTML Download Download as PDF (Size:861KB) PP. 196-200
DOI: 10.4236/jemaa.2013.55031    3,234 Downloads   5,158 Views   Citations


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.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

G. Byun, S. Ji, B. Jang, C. Seo and H. Choo, "Design of a Loop Resonator with Improved Power Transmission Efficiency Using a Ferrite Plate," Journal of Electromagnetic Analysis and Applications, Vol. 5 No. 5, 2013, pp. 196-200. doi: 10.4236/jemaa.2013.55031.


[1] J. J. Hirai, T. W. Kim and A. Kawamura, “Wireless Transmission of Power and Information for Cableless Linear Motor Drive,” IEEE Transactions on Power Electron, Vol. 15, No. 1, 2000, pp. 21-27. doi:10.1109/63.817358
[2] A. Kurs, A. Karalis, R. Moffatt, J. D. Joannopoulos, P. Fisher and M. Soljacic, “Wireless Power Transfer via Strongly Coupled Magnetic Resonances,” Science, Vol. 317, No. 5834, 2007, pp. 83-86. doi:10.1126/science.1143254
[3] ANSI/IEEE C63.4, “American National Standard for Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz,” ANSI/IEEE C63.4, 2004, pp. 1-135.
[4] E. M. Thomas, J. D. Heebl, C. Pfeiffer and A. Grbic, “A Power Link Study of Wireless Non-Radiative Power Transfer Systems Using Resonant Shielded Loops,” IEEE Transactions on Circuits and Systems I, Vol. 59, No. 9, 2012, pp. 2125-2136. doi:10.1109/TCSI.2012.2185295
[5] A. Karalis, J. D. Joannopoulos, and M. Soljacic, “Efficient Wireless Non-Radiative Mid-Range Energy Transfer,” Annals of Physics, Vol. 323, No. 1, 2008, pp. 34-48. doi:10.1016/j.aop.2007.04.017
[6] EM Software and Systems, “FEKO Suite 5.5,” 2012.
[7] Y. Rahmat-Samii and E. Michielssen, “Electromagnetic Optimization by Genetic Algorithms,” Wiley, New York, 1999.
[8] I. Lindell and A. Sihvola, “Transformation Method for Problems Involving Perfect Electromagnetic Conductor (PEMC) Structures,” IEEE Transactions on Antennas and Propagation, Vol. 53, No. 9, 2005, pp. 3003-3011. doi:10.1109/TAP.2005.854519

comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.