Improvement of Wireless Power Transmission Efficiency to Implantable Devices

In this paper we examine the advantages of incorporating three orthogonal coils in the implantable receiving unit to improve the power efficiency under device rotation within the human body. The wireless power transmission system incorporates a realistic multi-layered tissue model and the power transfer process is simulated using High-Frequency Structure Simulator (HFSS) software. The results show that the external and implantable devices can be optimized with improved power transfer efficiency under the effects of rotation within the human body.