Articles techniques et présentations

The electromagnetic study for the design of microwave ovens requires knowledge of the electric permittivities of the materials within the chamber. In some cases, data can be easily obtained from the literature, as with Teflon, Mica, and borosilicate glass. However, for more advanced composite materials, ad-hoc measurements become necessary. This study investigates the measurement of the dielectric constant using the perturbative method, leveraging a numerical model to overcome certain restrictive limitations associated with the small perturbation hypotheses. Specifically, the model enables optimization of the resonant chamber geometry for accurate measurement, the appropriate selection of the base dielectric material, and crucially, it accounts for the actual launcher within the chamber. By addressing these factors, the study enhances the precision and reliability of dielectric constant measurements, providing a comprehensive approach to improve experimental setups and results in this domain.