Microwave cavity resonator based dielectric constants measurement of solid materials

In this paper, the importance of measuring dielectric properties of solid materials is discussed, which is of great significance in the fields of biological and agriculture science. The analysis and simulation of the solid materials is done by employing a hollow cylindrical cavity resonator. This method provides parameters of high accuracy for calculating the permittivity and permeability of solid materials. The dielectric properties of hollow cavity are first determined by measuring resonant frequency and quality factor. Then, the same analysis has been carried out by filling the hollow cavity by a solid material. The mathematical results have been validated by simulations done in HFSS.