Frequency-tunable device based on a multilayer strip-slot transition and its application for measuring the dielectric properties of materials

The paper presents the results of theoretical and experimental researches a frequency-tunable device based on multilayer strip-slot transition with U-shaped slot resonator variable length. application presented makes it possible to implement resonant method for measuring dielectric properties materials in microwave frequency range. numerical simulation rigorous formulation electrodynamics problem is performed research. aim research determine electrical characteristics prove possibility applying stripslot length sample range (850–1250) MHz. Measurements S-parameters are accomplished using vector network analyzer. material under BaFe10Ti2O19. good qualitative quantitative agreement.