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A low-power smart temperature sensor for passive UHF RFID tags and sensor nets

Ghaderi Karkani, M. R ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1109/ISTEL.2016.7881772
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2017
  4. Abstract:
  5. A low-power wide-range CMOS temperature sensor architecture is proposed for RFID and Sensor Networks based on temperature-to-frequency conversion using supply voltage controlled sub-threshold ring oscillator. The principles of operation are investigated and proved via simulation results. Most errors are canceled out by this ratio-metric design. An inaccuracy of -0.84°C to +0.34°C occurs over a range of -40°C to 80°C after using a novel in-field digital two-point calibration. The entire sensor consumes less than 93nW to 305nW over the temperature range and can be digitally reconfigured for setting sample rate and resolution in a tradeoff. © 2016 IEEE
  6. Keywords:
  7. CMOS temperature sensor ; Low-cost calibration ; RFID tags ; Temperature-to-frequency ; Calibration ; CMOS integrated circuits ; Radio frequency identification (RFID) ; Sensor networks ; Temperature sensors ; Low costs ; Passive UHF RFID ; Sensor architectures ; Smart temperature sensors ; Temperature range ; Two-point calibration ; Wireless sensing ; Low power electronics
  8. Source: 2016 8th International Symposium on Telecommunications, IST 2016, 27 September 2016 through 29 September 2016 ; 2017 , Pages 12-17 ; 9781509034345 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/7881772