Title :
A parallel plate dielectric resonator as a wireless passive strain sensor
Author :
Aftab, T. ; Yousaf, A. ; Hoppe, J. ; Stoecklin, S. ; Ostertag, T. ; Reindl, L.
Author_Institution :
Dept. of Microsyst. Eng., Univ. of Freiburg, Freiburg, Germany
Abstract :
This paper presents a wireless passive strain sensing concept that functions by detuning a dielectric resonator. It is shown how a high Q resonator functions as a wireless passive sensor when correctly matched with an antenna. Finite element and analytical models are compared with experimental data and the sensor cross sensitivity with respect to temperature and humidity are also explored. The sensitivity of the resonance frequency to the strain, temperature and humidity is measured to be 51.6 ppm/μm, 10.09 ppm/K and -0.65 ppm/% respectively.
Keywords :
dielectric resonators; finite element analysis; passive networks; strain sensors; wireless sensor networks; finite element models; high Q resonator functions; parallel plate dielectric resonator; resonance frequency; wireless passive strain sensor; Couplings; Dielectrics; Q-factor; Resonant frequency; Temperature measurement; Wireless communication; Wireless sensor networks; Parallel plate dielectric resonators; electromagnetic coupling; passive sensor; sensitivity analysis;
Conference_Titel :
Sensors Applications Symposium (SAS), 2015 IEEE
Conference_Location :
Zadar
DOI :
10.1109/SAS.2015.7133576
