Conjugate image theory for non-symmetric inductive, capacitive and mixed coupling

Abstract

The conjugate image theory provides a methodology to determine the optimal circuit for a given wireless link. In this work, we compare the application of this theory between inductive and capacitive wireless power transfer, extended to non-symmetric configurations. We apply the conjugate image theory for mixed coupling and demonstrate that the results for inductive and capacitive coupling can be deduced from this configuration. Our results enable the description of the optimal circuit network of both an inductive and a capacitive system in compact equations, valid for the series and parallel topology. This allows a better understanding of the fundamental properties of the wireless transfer link, essential for efficient power transfer.