A 5.1-μW UHF RFID tag chip integrated with sensors for wireless environmental monitoring

被引:96
作者
Cho, N [1 ]
Song, SJ [1 ]
Kim, S [1 ]
Kim, S [1 ]
Yoo, HJ [1 ]
机构
[1] Korea Adv Inst Sci & Technol, Dept EE&CS, Taejon 305701, South Korea
来源
ESSCIRC 2005: PROCEEDINGS OF THE 31ST EUROPEAN SOLID-STATE CIRCUITS CONFERENCE | 2005年
关键词
D O I
10.1109/ESSCIR.2005.1541614
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A RF-powered transponder with temperature and photo sensors is designed and fabricated for environmental monitoring. The transponder gathers power from external ISM (860 - 960MHz) band RF signal and senses ambient temperature and light It contains a supply volage generator, a temperature-compensated ring oscillator, an oversampling synchronizer, a PTAT temperature sensor and an abrupt transition buffered photo sensor. Its internal clock frequency has variation less than 7% for 1.5-V supply voltage and 90 degrees C temperature change. The transponder occupies 0.4mm(2) With 0.25-mu m CMOS process and dissipates only 5.14-mu W during active state.
引用
收藏
页码:279 / 282
页数:4
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