Modeling and simulation of a thin film power transfer cell for medical devices and implants

Recently, a highly efficient method to transmit power wirelessly using mid-range resonant coupling was reported. Based on this method, we present a multilayer thin film design of power transfer cells for medical applications. Consisting of a tape coil in the exterior layer and strips in the interior layer separated by an insulation layer, these cells have an equivalent structure of multiple inductors and capacitors, forming several resonant frequencies. In order to verify these frequencies, a mesh current analysis is performed computationally. Our experiments show that this analysis is accurate. The results of this study are useful for the design of high-performance thin film cells for wireless power transfer.