A 13.56 MHz on/off delay-compensated fully-integrated active rectifier for biomedical wireless power transfer systems

A 13.56 MHz 64.8 mW fully-integrated CMOS active rectifier for biomedical wireless power transfer system is presented in this summary. It employs an adaptive on/off delay compensation technique to accurately compensate for the circuit delays despite PVT variations and mismatches. With an AC input that ranges from 1.8 V to 3.6 V, the measured voltage conversion ratio is higher than 90% and the measured power conversion efficiency is higher than 89.1% for a load resistor of 500 Ω.