Influence of Coil Radius, Distance and Working Frequency on Efficiency in Two-Coil Magnetically Coupled Resonant Wireless Power Transmission System

The efficiency is an important parameter in the Magnetic Coupling Resonance Wireless Power Transfer (MCRWPT) system. The influence of coil radius, distance and working frequency on efficiency is studied in this paper. The simulation is carried out with ADS and HFSS. The coil is designed with different radius and distance, and different matching network is designed for different working frequency. The simulation results show that S21 increases with increasing radius and frequency, and with decreasing distance.