4.4.1 - Permittivity Measurement with a Radio Communication System
- 18. GMA/ITG-Fachtagung Sensoren und Messsysteme 2016
2016-05-10 - 2016-05-11
- 4.4 Elektromagnetische Messsysteme
- I. Motroniuk, S. Hummel, A. Fischerauer, G. Fischerauer - Universität Bayreuth, Bayreuth (Germany)
- 302 - 307
We have recently proposed a measurement approach based on the fact that the stochastic parameters of a microwave communication system depend on the properties of the materials in the microwave propagation path. This has been demonstrated to be a possible means of estimating the state of catalysts inside metallic housings in situ and from the outside of the catalyst. In this contribution, we show that the method may be applied to the quantitative determination of the dielectric permittivity of samples inside a microwave cavity resonator. Measurements were performed on samples made of polytetrafluoroethylene (PTFE), polyethylene (PE), polycarbonate (PC), and polyoxymethylene (POM).