학술논문
Multiple-half-wave resonator for wireless power transfer using magnetic resonant coupling
Document Type
Conference
Source
2017 IEEE International Conference on Computational Electromagnetics (ICCEM) Computational Electromagnetics (ICCEM), 2017 IEEE International Conference on. :124-126 Mar, 2017
Subject
Language
Abstract
In order to extend the transfer distance in wireless power transfers using magnetic resonant coupling, it is necessary to increase the quality factor of resonators. In general, resonators with a larger number of turns may have a higher quality factor; however, the number of turns is limited by the half wavelength. To overcome this frequency limitation, we propose a multiple-half-wave resonator that consists of several half-wave resonators in order to provide an overall larger number of turns. An electromagnetic simulation shows that the proposed structure improves the transfer efficiency by 14%, 30%, and 40% over transfer distances of 50 cm, 75 cm, and 100 cm, respectively, when compared to a conventional helical resonator at 13.56 MHz.