A semi-passive UHF RFID tag with on-chip temperature sensor

Wenyi Che,Dechao Meng,Xuegui Chang,Wei Chen,Lifang Wang,Yuqing Yang,Conghui Xu,Xi Tan,Na Yan,Hao Min

CICC（2010）

引用 34|浏览37

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摘要

A semi-passive UHF temperature sensor tag compatible with ISO 18000-6C protocol Revision-1 is presented in this paper. Novel power management techniques are proposed to prolong battery life, including two-stage wake-up detection, optimized rectifier design for wireless recharge, quasi CC-CV battery charging, and on-chip battery voltage surveillance. Both real-time temperature sensing and temperature log function are implemented with a bandgap based PTAT circuit. It has a - 40~100°C sensing range with ±1.6°C accuracy. The tag is fabricated in 0.18 μm CMOS technology with EEPROM. Measured sensitivity and standby current are -23.7 dBm and 150 nA respectively.

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关键词

on-chip temperature sensor,wireless recharge,temperature sensors,current 150 na,optimized rectifier design,quasi cc-cv battery charging,cmos technology,power management techniques,size 0.18 mum,radiofrequency identification,eeprom,semi-passive uhf rfid tag,iso 18000-6c protocol revision-1,on-chip battery voltage surveillance,battery chargers,two-stage wake-up detection,rfid tag,real time,chip,temperature measurement

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