Regensburg 2016 – wissenschaftliches Programm

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DF: Fachverband Dielektrische Festkörper

DF 6: Focus Session: Applications of Dielectric Materials in Microwave Technology

DF 6.5: Topical Talk

Montag, 7. März 2016, 17:10–17:40, H26

Dielectric Characterization for Industrial Microwave Applications — •Sergey Soldatov, Vasileios Ramopoulos, Guido Link, and John Jelonnek — Kalsruher Institute of Technology IHM, Germany

Volumetric and selective heating of dielectric materials is a unique feature of microwave heating technology, that can provided a significant reduction in processing time and increase in energy efficiency. Therefore the use of microwave technology faces growing interest in various fields of industrial applications. As any production technology so also microwave assisted processes typically need process specific and optimized system designs. Those typically can be realized by electromagnetic and multiphysics simulations. The inevitable basis for this is a detailed knowledge about the dielectric behavior of any material involved at the frequency and temperature range of interest. This includes potential tooling materials as well the processed goods. In case the process leads to irreversible modification of those materials, due to phase changes or chemical reactions, than beside the temperature dependence the time dependence of the dielectric properties is of interest as well. Based on this, specific in-situ measurement techniques have been developed at KIT based on the transmission reflection method as well as the cavity perturbation method in the 2.45 GHz ISM-band. The system design of those dielectric test sets will be presented and discussed including some experimental results on specific materials.