Transparent electrode resonators for MR-WPT

Wireless power transfer (WPT) system has been studied and four-coil WPT is the standard form in indirect-fed magnetic resonance WPT (MR-WPT). In this research, we fabricated small copper coil and transparent electrode coil. The electrode was deposed IZTO/Ag/IZTO as a multilayer film structure. Load loop and source loop were optimized using capacitors. The efficiency was measured in distance from 1 cm to 5 cm. The optimized efficiency of the MR-WPT with capacitance was 81% using a copper coil and 57% using a transparent coil (IZTO/Ag/IZTO) at 1 cm.