Planar shielded-loop resonators for wireless non-radiative power transfer

A planar analog to the conventional coaxial shielded-loop resonator used for wireless non-radiative power transfer (WNPT) is introduced. Simulation and experimental results show that the inner conductor need not be completely shielded by the outer conductor to achieve resonance and efficient power transfer. The prototypes also demonstrate the ease and consistency of fabrication compared to conventional coaxial shielded loops.