A Passive Wireless Temperature Sensor Tag Compatible with EPC Gen2 UHF RFID Protocol

摘要：

　　A fully passive wireless sensor tag compatible with electronic prod-uct code(EPC)global Class-1 Generation-2(Gen2)protocol is pre-sented.The whole chip consists of RF/analog front-end,digital baseband processor,multiple-time-programmable(MTP)memory and an on-chip temperature sensor.A clock generator is proposed to meet the low-power requirement of the fully passive operation,with low sensitivity to the process-voltage-temperature(PVT)variations.The temperature sensor is realized by using an energy-efficient suc-cessive approximation register(SAR)analog-to-digital converter(ADC)and a low power sub-threshold sensing core,where the sens-ing core generates a proportional to absolute temperature(PTAT)voltage signal and a reference voltage,and the PTAT signal is dig-itized by the SAR ADC.A lower power scheme,which is used to generate the backscatter link frequency(BLF),is also proposed to meet the BLF requirement of EPC Gen2 protocol.The whole tem-perature sensor tag chip is fabricated in the TSMC 0.18 μm CMOS technology and the chip size is 0.62mm2.The maximum sensitivity of the tag is-13.1/-11.3 dBm for reading/sensing operation,and the temperature sensing error is-0.55℃/0.79℃over a operating range from-40℃to 85℃.It achieves a reading/sensing distance of over 8/6 m with 4W effective isotropic radiated power(EIRP)by a commercial reader.

关键词： Wireless Temperature Sensor Passive UHF RFID Tag EPC Gen2 Clock Generator Backscatter Link Frequency

作者: Lianebo Xie Mu Zhou Xiaolong Yang Wei Nie Yong Wang

作者单位: School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China

会议类型: 国际会议

会议名称: 2019国图灵大会(ACM Turing Celebration conference-China 2019 )

会议地点: 成都

会议语种:英文

页码: 703-712

在线出版日期: 2019-05-17（万方平台首次上网日期，不代表论文的发表时间）