Title :
Optimum frequency of high Q-factor resonator for magnetic resonance coupling
Author :
Park, Jae-Hyun ; Park, Byung-Chul ; Lee, Jeong-Hae ; Ryu, Young-Ho ; Park, Eun-Seok ; Kwon, Sang-Wook
Author_Institution :
Dept. of Electron. & Electr. Eng., Hongik Univ. Seoul, Seoul, South Korea
Abstract :
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.
Keywords :
Q-factor; magnetic resonance; resonators; MZR; WPT efficiency; WPT method; high-Q-factor mu-zero resonator; magnetic resonance coupling; power loss; radiation efficiency; radiative loss; resonance frequency; series RLC circuit; wireless power transmission; Couplings; Frequency measurement; Inductance; Magnetic resonance; Q factor; Resistance; High Q-factor; Magnetic Resonance Coupling; Mu-zero resonator;
Conference_Titel :
Microwave Conference (EuMC), 2011 41st European
Conference_Location :
Manchester
Print_ISBN :
978-1-61284-235-6
