Summary
International Symposium on Antennas and Propagation
2011
Session Number:WeB2
Session:
Number:WeB2-4
Analysis of magnetic resonance wireless power transfer with multiple self resonators
JinWook Kim, Hyeon-Chang Son, Do-Hyeon Kim, Young-Jin Park,
pp.-
Publication Date:2011/10/25
Online ISSN:2188-5079
Summary:
This paper presents efficiency analysis of a magnetic resonance wireless power transfer (WPT) system with multiple self resonators. In the system, there are Tx and Rx self resonators and an additional coil, called intermediate self resonator. The intermediate resonant coil is arranged coaxially and perpendicular to both Tx and Rx resonant coils. The power efficiency is calculated using coupled mode theory (CMT). Impedance matching conditions are also shown using the CMT. Analysis results show that the intermediate coil properly improves efficiency and extends distance between Tx and Rx. The calculated efficiency is in good agreement with measurement.