Biomedical implants play important roles in health monitoring and treatments. Batteries are typically employed to power the implants; however, they have limited battery life and risks of health hazards. To solve the powering problem, various power solutions have been explored, and among these solutions, wireless power transfer (WPT) is a promising candidate for achieving high transmitted power with minimum health concerns.

Conventional WPT systems suffer from many known issues, including low end-to-end efficiency, insufficient voltage regulation ability, lack of global power regulation, short transmission range, etc. These issues prevent the WPT from being employed to power biomedical implants. In this project, we will focus on solving these practical issues from two perspectives: the receiver (RX) design and the system design.

In the RX design, we will develop new rectifier topologies and voltage regulation control loops for high-voltage-gain, high-power, and high-efficiency voltage rectification and regulation while achieving fast transient responses. In the system design, we will develop a new architecture of the transmitter (TX) and the global voltage/power feedback algorithms to achieve a large power transmission range, high end-to-end efficiency, robust power delivery, etc.