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Optimum frequency of high Q-factor resonator for magnetic resonance coupling

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6 Author(s)
Jae-Hyun Park ; Dept. of Electron. & Electr. Eng., Hongik Univ. Seoul, Seoul, South Korea ; Byung-Chul Park ; Jeong-Hae Lee ; Young-Ho Ryu
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In this paper, an efficient wireless power transmission (WPT) method using high Q-factor mu-zero resonators (MZRs) is investigated. Since one-cell of a MZR consists of series inductance and capacitance, it can be analyzed by using a series RLC circuit. To design an efficient WPT system, the maximum Q-factor and the optimum resonance frequency are analytically calculated by adjusting the size of a MZR. It is always observed that one seventh of the total power loss is radiative loss at the optimum resonance frequency. The theoretical and measured results prove that the Q-factor and WPT efficiency are also maximized when the radiation efficiency of the resonator is one- seventh.

Published in:

Microwave Conference (EuMC), 2011 41st European

Date of Conference:

10-13 Oct. 2011