Title :
A new integrated low-power BPSK demodulator for wireless implantable neural recording system
Author :
Li, C.P. ; Wu, Z.H. ; Li, B.
Author_Institution :
Sch. of Electron. & Inf. Technol., South China Univ. of Technol., Guangzhou, China
Abstract :
Low power and small volume are always the most important issues in the internal module of a wireless implantable neural recording system. In this paper, a BPSK demodulator base on digital-analog hybrid COSTAS Loop is presented. A digital multiplier replacing the analog multiplier is presented specially to achieve lower power consumption in the proposed circuit. The proposed BPSK demodulator features with a data transmission rate of 1 Mbps and consumes 485.4uW under a supply voltage of 3.3V, which has been implemented with a Chartered 0.35um CMOS process. The area of the chip is only 0.17mm2. Test results show that it can work correctly.
Keywords :
CMOS integrated circuits; biomedical electronics; biomedical equipment; demodulators; low-power electronics; neurophysiology; phase shift keying; prosthetics; CMOS process; analog multiplier; bit rate 1 Mbit/s; data transmission rate; digital multiplier; digital-analog hybrid COSTAS loop; integrated low-power BPSK demodulator; internal module; lower power consumption; power 485.4 muW; size 0.35 mum; supply voltage; voltage 3.3 V; wireless implantable neural recording system; Binary phase shift keying; CMOS process; Demodulation; Power demand; Voltage-controlled oscillators; Wireless communication; BPSK; Low-power; Reliability; Small-volume;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2010 IEEE International Conference of
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-9997-7
DOI :
10.1109/EDSSC.2010.5713742
