VLSI implementation of wireless power and data transmission circuits for micro-stimulator

This paper presents the realization of the radio frequency (RF) power and data transmission for implantable micro-stimulators. This implantable device includes an internal RF front-end circuit, a control circuit, and a stimulator. A 2MHz AM modulated signal including the power and data necessary for the implantable device is received, and a stable DC voltage and digital data will be extracted to stimulate the neuromuscular stimulation. The stimulator is a current-source stimulator, which is capable to generate a wide range of stimulation waveforms and stimulation patterns for a nerve cuff electrode. In this paper, most of the integrated circuits for the implantable device have been proposed and verified by using Hspice according to the technology of TSMC 0.25 /spl mu/m CMOS process.