Coupling Studies in Near Field Wireless Power Transfer using a Ground Plane and Helical Antennas

Abstract

Two different wireless power transfer (WPT) configurations are being studied with the goal of optimizing received power. In the first case, two high-Q helical antennas are placed on opposite sides of a ground plane where the receiving antenna is a characteristic length or more above it and the transmitting antenna is placed close to it on the other while still not making contact. In the second configuration, both receiver and transmitter are opposite sides and equidistance from the ground plane. Measurements indicate, significantly better results in the second case. These results indicate the possibility of creating an enhanced power coupling system for wireless charging using the second configuration.