Frequency Splitting and other Things that Filters and Wireless Power Transfer Systems have in Common

In this paper, the phenomenon of frequency splitting in resonating Wireless Power Transfer Systems is considered. In particular, the property of impedance inverters of converting an impedance into an admittance is here exploited to give a simple and intuitive explanation of that phenomenon. Furthermore, some analogies between WPT systems and filters are here highlighted showing that the frequency splitting phenomenon is also present in Chebyshev filter responses.