A Comprehensive Comparative Study on Inductive and Ultrasonic Wireless Power Transmission to Biomedical Implants.

This paper presents a comprehensive comparison between inductive coupling and ultrasound for wireless power transmission to biomedical implants. Several sets of inductive and ultrasonic links for different powering distances (d12) and receiver dimensions have been optimized, and their key parameters, including power transmission efficiency (PTE) and power delivered to the load (PDL) within safety ...