A Non-Radiative Wireless Power Transfer Based on Sparse Quasi-Static Cavity Resonator

In order to solve the issue of communication signal blocking in traditional cavity resonance wireless power transfer (CR WPT), a novel sparse quasi-static cavity resonator (QSCR) is proposed in this paper. The sparse QSCR is constructed by metallic strips according to the current path of the CR WPT system and the LC resonance theory. Based on the proposed resonator, a wireless power transfer system is built to simulate the power transfer under sparse metallic cavity environment. The simulation results show that the proposed CR WPT system can deliver power to receiver in nearly any position with the maximum efficiency value of more than 70%. Meanwhile, the proposed cavity resonator makes it possible to communicate with outside world.