Title :
Wireless sensing by means of passive multistandard RFID tags
Author :
Brenk, D. ; Essel, J. ; Heidrich, J. ; Weigel, R. ; Hofer, G. ; Holweg, G.
Author_Institution :
Inst. for Electron. Eng., Univ. of Erlangen-Nuremberg, Erlangen, Germany
Abstract :
This paper presents a generic sensor interface built in a 0.13 ¿m CMOS process capable of being applied in passive HF & UHF RFID Tags without any additional power supply. The sensor interface contains an ultra low-power successive approximation ADC that uses the capacitive charge redistribution technique for its integrated DAC. An on-chip temperature sensor and up to three additional sensor signals can be applied to the ADC. A conversion rate of 100 kSps is reached while consuming less than 1.5 ¿A at 0.9 Volt supply voltage.
Keywords :
analogue-digital conversion; radiofrequency identification; temperature sensors; wireless sensor networks; CMOS process; analog-to-digital converter; capacitive charge redistribution technique; generic sensor interface; on-chip temperature sensor; passive HF RFID tag; passive UHF RFID tag; size 0.13 mum; ultra low-power successive approximation ADC; wireless sensing; Humidity; Magnetic sensors; Passive RFID tags; RFID tags; Radio frequency; Radiofrequency identification; Temperature sensors; UHF measurements; Voltage; Wireless sensor networks;
Conference_Titel :
Sensors, 2009 IEEE
Conference_Location :
Christchurch
Print_ISBN :
978-1-4244-4548-6
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2009.5398526
