Analysis of relay effect on wireless power transfer

Witricity, the technology of wireless power transfer (WPT) over a limited distance via coupled magnetic resonances in the non-radiative near-field, has been the center of researcher´s attention over the recent years. As the main concern about this technology, there has been great effort to transfer electricity over longer distances using resonant coil (Relay). However, despite all benefits and advantages of the resonant coils, they bring about some undesirable effects on the system which have never been considered to date. This paper provides an analysis on the results of a system with the resonant frequency of 2.8 MHZ.