Design of an integrated wireless power transfer system with high power transfer efficiency and compact structure

An integration of a wireless power transfer system is presented to obtain both high power transfer efficiency and a compact wireless power transfer structure. To have all these characteristics, transmitter and receiver parts suggested in previous researches are all integrated to new resonant coils fabricated on Teflon substrates. To verify this characteristic, an equivalent circuit model is presented. Using this basic theory, the optimized performance through EM simulations is predicted, and the proposed wireless power transfer is realized with a practical load.