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A passive RFID tag embedded temperature sensor with improved process spreads immunity for a-30̂C to 60̂C sensing range
Wang B.1; Law M.-K.2; Bermak A.1; Luong H.C.1
2014
Source PublicationIEEE Transactions on Circuits and Systems I: Regular Papers
ISSN15498328
Volume61Issue:2Pages:337
Abstract

We present an ultra-low power temperature sensor embedded in the passive RFID tag using the TSMC 1P6M 0.18 μm m standard CMOS process. Substrate parasitic NPN bipolar pair is exploited to generate the temperature dependent current signals for thermal sensing. A time-domain readout scheme which has high immunity to the on-chip resistor, capacitor and clock frequency process-voltage-temperature (PVT) spreads is further proposed. Measurement results of the embedded sensor within the tag system shows a sensing accuracy of pm 1.5̂C (3σ) from-30̂C to 60̂C after one-point calibration at 20̂C, with a sensing resolution of 0.3̂C and a sampling rate of 68 samples per second. The embedded sensor draws 0.35 μA from a 1 V supply at room temperature and occupies a chip area of 0.14 mm2. © 2013 IEEE.

KeywordCmos Temperature Sensors Passive Rfid Tags Process Compensation Time-domain Conversion (Tdc)
DOI10.1109/TCSI.2013.2278388
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000331191800002
The Source to ArticleScopus
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Citation statistics
Cited Times [WOS]:37   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
Corresponding AuthorWang B.
Affiliation1.Department of Electrical and Computer Engineering, Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong
2.The State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macao, China
Recommended Citation
GB/T 7714
Wang B.,Law M.-K.,Bermak A.,et al. A passive RFID tag embedded temperature sensor with improved process spreads immunity for a-30̂C to 60̂C sensing range[J]. IEEE Transactions on Circuits and Systems I: Regular Papers,2014,61(2):337.
APA Wang B.,Law M.-K.,Bermak A.,&Luong H.C..(2014).A passive RFID tag embedded temperature sensor with improved process spreads immunity for a-30̂C to 60̂C sensing range.IEEE Transactions on Circuits and Systems I: Regular Papers,61(2),337.
MLA Wang B.,et al."A passive RFID tag embedded temperature sensor with improved process spreads immunity for a-30̂C to 60̂C sensing range".IEEE Transactions on Circuits and Systems I: Regular Papers 61.2(2014):337.
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