Title :
A low power front-end receiver design for sphygmus sensor using pulse-repetition period modulation
Author :
Tsou, Yu Lin ; Shia, Tim K. ; Juang, Kai Cheung
Author_Institution :
Inf. & Commun. Res. Labs., Ind. Technol. Res. Inst., Hsinchu, Taiwan
Abstract :
A novel method to detect human sphygmus by using pulse Repetition Period Modulation (PRPM) under unlicensed Ultra-Wide-Band (UWB) below 1 GHz is proposed in this work. The RF front-end receiver was implemented by TSMC CMOS 0.18 um technology that includes push - pull LNA, sampled MIXER, IF amplifier and common-mode feedback circuit. Total current consumes only 2.02 mA by using current reuse technique twice. Measured maximum conversion gain is about 45 dB and 1dB compression point is -18.56 dBV at 500 kHz IF frequency. Sphygmus signal of trier is detected by front-end receiver successfully and its frequency is about 1.25 Hz.
Keywords :
CMOS integrated circuits; biomedical measurement; circuit feedback; intermediate-frequency amplifiers; low noise amplifiers; patient monitoring; receivers; sensors; IF amplifier; LNA; RF front-end receiver; TSMC CMOS technology; common-mode feedback circuit; current 2.02 mA; frequency 500 kHz; human sphygmus; low power front-end receiver design; pulse repetition period modulation; sphygmus sensor; Frequency measurement; Gain; Gain measurement; Linearity; Mixers; Radio frequency; Receivers;
Conference_Titel :
Wireless Technology Conference (EuWIT), 2010 European
Conference_Location :
Paris
Print_ISBN :
978-1-4244-7233-8
