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

fYear

2015

fDate

13-15 April 2015

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors Applications Symposium (SAS), 2015 IEEE

Conference_Location

Zadar

Type

conf

DOI

10.1109/SAS.2015.7133576

Filename

7133576