Summary
International Symposium on Electromagnetic Compatibility
2009
Session Number:21Q1
Session:
Number:21Q1-1
Effect of Human Body on Near-Field Resonant Coupling Wireless Power Transmission System
Q. Yuan,
pp.25-28
Publication Date:2009/7/20
Online ISSN:2188-5079
Summary:
A practical wireless power transmission system consisting of a larger rectangular wire loop and a small square wire loop with a parasitic square helical coil is proposed for efficient wireless power transmission in an indoor environment. The effects of the non-resonant object such as the conducting box and the human body on the power transmission efficiency and the resonant frequency are investigated numerically. The results show that the power transmission efficiency is reduced significantly when a non-resonant object is very close to the receiving element. However this reduction can be negligible when the relative distance between the receiving element and the non-resonant is larger than 0.5m or 0.03λ at the resonant frequency of 19.22MHz.