RFID transceiver for wireless powering brain implanted microelectrodes and backscattered neural data collection

The developments in micro-nano-electronics, biology and neuro-sciences make possible interfaces between the human brain and the environment. Implantable and smart microprobes have been proposed that are able to transmit neural data at the outside world in RFID mode. In this paper a high resolution RFID reader, collecting neural data from implanted electrodes while powering the tag is proposed. The system gives power to the implanted tag, using a class E power amplifier (PA) and in between receives the data by an asynchronous demodulation. The technology used is a standard 65 nm CMOS TSMC. Simulations shown here, reveal an average power consumption of the overall system of 65 mW with a supply of 1.2 V and a BER less than 10−5.