Title :
Power recovery circuit for battery-less TPMS
Author :
Li, Yong ; Wu, Liji ; Zhang, Chun ; Wang, Zhihua
Author_Institution :
Tsinghua Univ. Beijing, Beijing
Abstract :
A 13.56 MHz HF power recovery circuit was designed for batteryless tire pressure monitoring system (TPMS) or wireless sensor networking applications using chartered 0.35-mum CMOS technologies. It converts received HF power to DC and charges a large capacitor, then supplies stable voltage output for other modules. Simulation results show that the circuit operates normally at electromagnetic field strength with induced voltage above 0.3 v. The circuit also generates an enable signal for digital circuits when the capacitor has been charged to a certain extent.
Keywords :
CMOS integrated circuits; pressure sensors; reference circuits; tyres; CMOS technologies; bandgap reference circuits; batteryless tire pressure monitoring system; digital circuits; frequency 13.56 MHz; power recovery circuit; size 0.35 mum; wireless sensor networking; CMOS technology; Capacitors; Circuit simulation; Electromagnetic fields; Hafnium; Monitoring; Sensor systems and applications; Tires; Voltage; Wireless sensor networks;
Conference_Titel :
ASIC, 2007. ASICON '07. 7th International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-1132-0
Electronic_ISBN :
978-1-4244-1132-0
DOI :
10.1109/ICASIC.2007.4415665
