Overview of Electromagnetic Transducers with Radar Interrogation for Passive Wireless Sensors Applications

Abstract — Passive wireless sensors with electromagnetic transduction are chipless wireless sensors that do not require electronic circuits or power. They are then good candidate for buried sensors or harsh environment applications. We validated at LAAS several transducers concepts with high sensitivity (pressure, stress, temperature, radiation) compatible with radar interrogation up to several ten of meters. Index Terms—wireless sensor, passive sensor, chipless sensor, electromagnetic transduction, radar interrogatio