2015 IEEE Sensors Applications Symposium (SAS) 2015
DOI: 10.1109/sas.2015.7133576
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A parallel plate dielectric resonator as a wireless passive strain sensor

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 pp… Show more

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Cited by 10 publications
(2 citation statements)
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“…Dielectric and microwave cavity resonators that can operate at temperatures up to 700 °C have been used for wireless passive high temperature sensing [ 2 , 3 ]. Studies show the commercial prospects of these sensors, if microminiaturization can be achieved.…”
Section: Introductionmentioning
confidence: 99%
“…Dielectric and microwave cavity resonators that can operate at temperatures up to 700 °C have been used for wireless passive high temperature sensing [ 2 , 3 ]. Studies show the commercial prospects of these sensors, if microminiaturization can be achieved.…”
Section: Introductionmentioning
confidence: 99%
“…Therefore, microwave wireless passive sensors have been a focus of attention owing to their high quality, large sensing distance, lower material requirements, and other advantages. The Leonhard M. Reindl research group at the University of Freiburg achieved torque, strain, and temperature measurements by using a microwave dielectric resonator [ 26 , 27 , 28 ]. However, since the dielectric constant of the dielectric resonator is large, the emission efficiency is affected negatively.…”
Section: Introductionmentioning
confidence: 99%