TY - JOUR TI - Coil misalignment compensation techniques for wireless power transfer links in biomedical implants DO - https://doi.org/doi:10.7282/T3WH2S0M PY - 2015 AB - Wireless power Transfer (WPT) technique, based on inductive links, has been admit- ted as a promising solution for powering biomedical implants. Ensuring a stable power delivery via inductive links in implants under all conditions, however, has been a chal- lenging design problem. One of the issues that negatively impacts the performance of wireless power transfer (WPT) links in implants, is the misalignment in the posi- tion of the transmitter and receiver coils, which could naturally occur as a result of body movement or changes in the biological environment. An immediate e ect of coil misalignment is the change in coupling factor, resulting in the reduction of the power delivered to the load at the receiver side. In this work, we present a design concept that could be employed on the transmitter side to mitigate this e ect while keeping the driver to work at its optimum operating condition. Speci cally, we will demonstrate, analytically and through simulations, that tuning the shunt capacitor and the supply voltage at the transmitter side could be a promising approach for compensating the performance degradation induced by coil misalignment in WPT links. KW - Electrical and Computer Engineering KW - Biomedical materials KW - Electric power transmission KW - Medical electronics LA - eng ER -