A consideration of helical antennas for coupled resonant wireless power transfer using equivalent circuit

摘要

Recently, wireless power transfer (WPT) systems are getting large interest for charging an electric vehicle. Coupled resonant WPT proposed by MIT has considerable advantages because of its mid range transfer distance and high transmission efficiency [1] [2]. In order to put this method in practical use, design criteria of antenna should be established. Various kinds of antenna have been reported [3]. However, suitable antenna shape for an individual requirement is not cleared.