Electromagnetic Transduction for Wireless Passive Sensors
P. Pons, H. Aubert, Philippe Ménini, Manos M. Tentzeris · Procedia Engineering · 2012
Wireless sensors market is growing very fast these last years tanks to the availability of cheap, small and efficient micro–sensors, batteries, analog and RF circuits, and to the presence of standardized communication protocols. Even if these active sensors are very attractive for a lot of applications, they suffer from weak energy autonomy and they are not compatible with harsh environment. In order to overcome these problems, we have developed a new kind of wireless sensors using electromagnetic transducers and radar interrogation. These passive sensors (battery–less and without electronic components) have been studied for pressure, temperature, gas and stress applications.