Abstract
There are several studies in the literature, mainly focused on obtaining microwave transformers, filters, matching circuits, etc., using different types of air-filled waveguide structures. We consider a waveguide junction formed by putting horizontal and vertical diaphragms within a rectangular waveguide. The regions on either side of the diaphragm are filled by different frequency depended dielectric materials. TE mode propagation is considered within the rectangular waveguide and electric and magnetic fields are obtained accordingly. The attenuation constants and propagation constants of a field propagating within the rectangular waveguide are defined. The effects of the discontinuities formed by vertical and horizontal diaphragms in a dispersive material filled rectangular waveguide are studied.