Comprehensive Analysis of RF-Based Wireless Power Transfer for Enhancing Implantable Medical Device Performance

Wireless power transfer (WPT) for medical devices is a groundbreaking technology poised to revolutionize treatments for neurological disorders by providing reliable, cable-free power to critical implants, such as neurostimulators. This study explores RF energy harvesting as a method to power these devices, eliminating the need for batteries and reducing patient discomfort while improving device longevity and safety. We developed an advanced rectifier circuit using a non-linear diode model to optimize energy conversion efficiency. The rectifier circuit demonstrated an impressive efficiency of 97.84% at 900MHz, making it highly suitable for medical applications requiring consistent and efficient power delivery. The input impedance was carefully matched with the load to maximize power transfer, and an impedance-matching network was designed to minimize energy loss. The circuit’s performance was validated through rigorous simulations, confirming its potential for high-efficiency wireless power transfer in neurological disorder management. This advancement offers a reliable and efficient power source for implants, addressing a critical need in medical technology.