Title :
Novel CMOS voltage sensor with process invariant threshold for passive UHF RFID transponders
Author :
Chiang, Chun-Pong ; Tam, Kam-Weng
Author_Institution :
Wireless Commun. Lab., Univ. of Macau, Macao
Abstract :
A novel process-invariant voltage sensor used in passive UHF RFID transponder has been presented in this work. The process-invariant characteristic is due to the deployment of an insensitive bandgap reference and its superb characteristics have been demonstrated. By adjusting the component values of the resistor divider, different threshold voltages can be defined. For demonstrating the superior performance of the proposed voltage sensor, its threshold voltage variations due to process corners and charging-up times have been illustrated and its low current consumption has also been shown.
Keywords :
CMOS integrated circuits; radiofrequency identification; sensors; transponders; CMOS voltage sensor; insensitive bandgap reference; passive UHF RFID transponders; process invariant threshold; resistor divider; CMOS process; CMOS technology; Capacitors; Passive RFID tags; Radio frequency; Radiofrequency identification; Resistors; Sensor phenomena and characterization; Threshold voltage; Transponders;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958347
