Wireless Power Transfer via Dielectric Loaded Multi-moded Split Cavity Resonator

Abstract

Wireless power transfer via a dielectric loaded multi-moded split cavity resonator (SCR) is proposed. Unlike conventional inductive resonant coupling, the scheme enables the control of both the real and imaginary parts of the transfer impedance. It is demonstrated through measurements that the inclusion of dielectric resonators (DRs) tuned to the SCR $T{E}_{012}$ mode, significantly enhances the system figure of merit and optimal efficiency. The effect of the DRs is shown to be related to the resonant coupling of the DRs $T{E}_{01\delta }$ and SCR modes, resulting in an electromagnetic induced transparency-like window. An efficiency of 70% is achieved when the transfer distance is 7 cm, or half wavelength. Additionally, it was shown that the efficiency is above 40% over a relatively wide bandwidth and a wide range of optimum load impedance.

15 pages

References in corpus (6)

• Efficient wireless non-radiative mid-range energy transfer
• Metamaterial-Enhanced Coupling between Magnetic Dipoles for Efficient Wireless Power Transfer
• Magnetic superlens-enhanced inductive coupling for wireless power transfer
• Smart Table Based on Metasurface for Wireless Power Transfer
• Energy Coupled Mode Theory for an arbitrary number of resonators
• An Electromagnetic Induced Transparency-like Scheme for Wireless Power Transfer Using Dielectric Resonators