Wireless Power Transfer to Biomedical Implants Using a Class-E Inverter and a Class-DE Rectifier

In this article, we propose a strategy for the design of wireless power transfer system consisting class-E inverter, half-bridge class-DE rectifier, and two coupled coils. The is optimized maximum efficiency. validated via case study, which link to neuroprosthesis was designed. After circuit simulations, prototype realized measured. There good agreement between calculated, simulated measured voltages currents. delivers ${\text {80}}$ mW, {7}}$ V biomedical implant at {6.78}}$ MHz, efficiency {52}}$ {68\%}}$ , depending on alignment. end-to-end efficiency, with controller gate driver also taken into account, {39}}$ {57\%}}$ . Electromagnetic thermal simulations were performed verify compliance relevant safety regulations specific absorption rate (SAR) levels, magnetic field strength, heat generation in implant, separation distances coils {8}}$ {15}}$ mm, transverse misalignment from {0}}$ notation="LaTeX">$\text {15}$ mm.