Modified SIW Structure with Contrast Dielectric Filling

This paper presents the study of modified substrate-integrated waveguide (SIW structure). Nowadays the printed circuit boards (PCBs) are made on common dielectric substrate. Therefore, the design of the SIW structure should be based on the material which is used for the hole PCB. Sometimes this dielectric doesn't have properties required for a waveguide designed in a particular frequency range. So, the purpose of this paper is to show how the properties of the modified substrate-integrated waveguide can be depending on dielectric filling.