Analysis of dispersion characteristic of substrate integrated waveguide based on mode matching method

In this paper, β-ω of substrate integrated waveguide is studied. First, a unit cell of the whole structure is analyzed by mode matching technique. Then by applying Floquet theory into the solution process, dispersion characteristic of the periodic structure is obtained and effects of various parameters of the structure on the response are described. Finally, proposed method is validated by comparing our results with other published results and Ansoft's HFSS.