Chipless RFID Technology for Operations in Harsh Environments

Chipless radio-frequency identification (RFID) technology comprises device that can operate identification and sensing tasks which are characterized by the absence of any integrated circuit (IC). The adoption of chipless RFID sensors can be of great interest in a harsh environment since the absence of an IC makes it less vulnerable to adverse operating conditions such high temperatures, high pressure, and corrosion hazard. In fact, silicon ICs exhibit a limited robustness against these extreme locations. The chapter addresses the different paradigms exploited by chipless RFID sensors both from the theoretical perspective as well as the implementation one. A detailed survey of the chipless RFID sensors employed in hostile scenarios is carried out in different applications domains spanning from space to industrial tool monitoring.