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This paper presents chipless RFID sensors for temperature and humidity monitoring, leveraging smart materials to enhance their sensitivity and performance. The sensors use slow-wave reflective resonators, offering a compact and passive solution. For temperature sensing, a low-loss RO3210 substrate is used, chosen for its strong thermal dependence of the dielectric constant, which enables the detection of specific temperature thresholds. For humidity sensing, Kapton is employed as the sensing material due to its high sensitivity to moisture-induced permittivity changes. A comprehensive theoretical analysis, supported by electromagnetic simulations, has been conducted. The results confirm the effectiveness of the proposed sensors and highlight their potential for applications in agricultural technology (Agritech).

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Temperature and Humidity Chipless RFID Sensors Using Smart Materials for Agritech Applications

  • 会议论文

  • 发表日期：

    2026年

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  • Maha Added,
  • Nadia Chagtmi,
  • Karima Rabaani,
  • Noureddine Boulejfen

摘要

This paper presents chipless RFID sensors for temperature and humidity monitoring, leveraging smart materials to enhance their sensitivity and performance. The sensors use slow-wave reflective resonators, offering a compact and passive solution. For temperature sensing, a low-loss RO3210 substrate is used, chosen for its strong thermal dependence of the dielectric constant, which enables the detection of specific temperature thresholds. For humidity sensing, Kapton is employed as the sensing material due to its high sensitivity to moisture-induced permittivity changes. A comprehensive theoretical analysis, supported by electromagnetic simulations, has been conducted. The results confirm the effectiveness of the proposed sensors and highlight their potential for applications in agricultural technology (Agritech).