Solar-Powered Wireless Temperature Sensor Based on UWB RFID With Self-Calibration

Angel Ramos*, David Girbau, Antonio Lazaro, Ana Collado, Apostolos Georgiadis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


This paper presents a solar-powered wireless temperature sensor based on time-coded ultrawideband (UWB) radio frequency identification. A negative temperature coefficient resistor acts as the sensing element. It controls the current of a PIN diode connected to a UWB scattering antenna. The wireless sensor is self-calibrated using a narrowband tone, making its performance independent of the distance or orientation between the reader and the sensor. A consumption of 82 mu A is demonstrated. An error under 0.6 degrees C within a 35 degrees C-70 degrees C temperature range is obtained for most of the cases.

Original languageEnglish
Pages (from-to)3764-3772
Number of pages9
JournalIEEE Sensors Journal
Issue number7
Publication statusPublished - Jul 2015


  • Ultra-wideband
  • PIN diode
  • NTC
  • solar cell
  • energy harvesting
  • TAGS


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