Optimization of geometric parameters for circular loop antenna in magnetic coupled wireless power transfer

In this paper, a theoretical approach has been proposed to design coil-based loop antenna for magnetic coupled wireless power transfer systems. The proposed methodology can be applied to predict the power transfer efficiency at a specific target distance. The modeling of coil winding for optimized circular loop antenna has been optimized by calculation of mutual inductance using Neumann´s formula and equivalent model of magnetic coupled WPT. The calculation of efficiency in accordance with transfer distance can be performed using the proposed model. The error rate between calculated and measured efficiency is less than 2.61% at target distance.