A Programming-Free Three-Dimensional Resonant Current-Mode Wireless Receiver with Real-Time Link-Adaptivity and a 0.904cm3 Receiver Coil for Implantable Systems

Implantable medical devices (IMDs) are used in the human body for the treatment of diseases affecting the nervous, circulatory, and endocrine systems [1-3,5]. Charging the battery embedded in IMDs using conductors poses the risks of infection and aversion to surgery, leading to the development of wireless power transfer (WPT) technology. However, challenges related to body tissue heating and electromagnetic field exposure regulations must be managed, while maintaining small system sizes to enhance patient preference. To address these challenges, a resonant current-mode (RCM) WPT with low power reception capability has been reported [1].