CMOS RF powering system for cochlear implant

In this paper we present a wireless RF powering system dedicated to a cochlear implant. Most current systems use discrete components to achieve the back telemetry power supply. In order to achieve an efficient power consumption and a minimum size of the implant, our RF powering system is conceived with MOS transistors in order to have an integrated system. Using the signal recovered by the inductive link, the system generates a regulated 3.3 V voltage which is used to generate power supply for the entire implanted device. The system is designed in AMS 0.35 ¿m standard CMOS technology.