Wireless energy and signal transmission system for micro implantable medical system

In this paper, we present the wireless energy and signal transmission system and circuit design for implantable medical system to achieve power and data transmission and signal processing. This paper gives a detailed design of the power and the ASK demodulation circuit and their improved circuits. The first design has been fabricated in a 0.5 um 2P3M standard CMOS process, the test results have demonstrated that the comparator detects the digital data precisely. The improved circuits greatly reduce the chip area and get more stable and precise 1-v dc voltage and restore the digital data precisely. They are implemented in 0.13-um 1P8M standard CMOS process.