传感技术学报2011，Vol.24Issue(11)：1526-1531,6.DOI:10.3969/j.issn.1004-1699.2011.11.003
集成于无源UHF RFID标签的新结构CMOS温度传感器
A New CMOS Temperature Sensor Iintegrated in the Passive UHF RFID Tag
摘要
Abstract
A new temperature sensor integrated in the passive UHF RFID tag is designed. Two currents with the opposite temperature coefficient are generated by making use of a cascode current mirror with high PSRR, to realize the supply voltage and temperature compensation. The pulse signal related to the temperature is generated by a similar differential architecture, it effectively overcomes the errors caused by process variation. The counting clock signal is provided by the local oscillator of the tag. And the oscillator frequency controlled by the bias current is approximately independent of the supply voltage and temperature. It is implemented in SMIC 0. 18μm 2P4M CMOS process,as shown in the simulation results,when the supply voltage is 1.8V and temperature ranges from -10℃to 100 ℃ ,the bias current is 112nA,the oscillator frequency of the tag is 2MHz,and the temperature sensor achieves an effective resolution of 0.5 ℃/LSB,the working currents are 774nA.关键词
无源RFID/温度传感器/CMOS/有效分辨率Key words
passive RFID/temperature sensor/CMOS/effective resolution分类
信息技术与安全科学引用本文复制引用
张欢,毛陆虹,王倩,谢生,张世林..集成于无源UHF RFID标签的新结构CMOS温度传感器[J].传感技术学报,2011,24(11):1526-1531,6.基金项目
国家自然科学基金项目(61072010) （61072010）
国家高技术研究发展计划(863计划)(2008AA04A102) （863计划）
