Chipless RFID Temperature and Humidity Sensing

Florian Requena (1, 2) , Nicolas Barbot (1, 2) , Darine Kaddour (1, 2) , Etienne Perret (1, 2)

1 LCIS - Laboratoire de Conception et d'Intégration des Systèmes
2 ORSYS - Systèmes Optoélectroniques et Radiofréquences

In this paper, a temperature and humidity chipless RFID sensor is presented. A conventional chipless RFID interrogation process is used to extract the tag identification as well as the two physical parameters. A model describing the evolution of the resonance frequency of a scatterer as a function of temperature and humidity is introduced. It allows the two quantities to be extracted independently of each other while each of them impacts the resonance frequency. On average, an error lower than 0.7 • C is obtained on the temperature and less than 1.3% on the humidity.

Mots clés: Chipless RFID; Scatterer; Temperature; Humidity; Wireless sensor; Chipless RFID

Domaines: Traitement du signal et de l'image [eess.SP]

Florian Requena, Nicolas Barbot, Darine Kaddour, Etienne Perret. Chipless RFID Temperature and Humidity Sensing. 2021 IEEE/MTT-S International Microwave Symposium - IMS 2021, Jun 2021, Atlanta, United States. pp.545-548, ⟨10.1109/ims19712.2021.9574942⟩. ⟨hal-03413126⟩