Power division in multi-receiver wireless power transfer systems

Abstract

The Wireless Power Transfer (WPT) is an increasingly important research topic which has been widely studied in the past few years. Achieving high efficiency in the WPT links is of critical importance and has been the main research topic of several previously published studies. We propose two methods to design adaptation networks based on quarter-wavelength transmission lines or impedance inverters. These adapt the load impedances of the receivers in a multi-receiver system so that a fair power division between all the participants takes place.