The effect of depression and protrusion of vertical walls and dielectric filling on electromagnetic propagation through x-band rectangular waveguides is studied using the finite element method. The effect of these deformations and dielectric filling on TE{sub}10, TE{sub}20 mode cutoff frequencies and passband is studied. The results are compared with those of x-band rectangular waveguides with depression and protrusion with air medium. TE{sub}10, TE{sub}20 mode cutoff frequencies for waveguides with depression and protrusion and filled with dielectric medium are less than that for air medium. However, the bandwidth in some cases of dielectric medium is larger than that for air medium.
展开▼
