A hybrid method consisting of employing the mode matching method in conjunction with the Fourier transform technique is used to analyze the radiation of the lowest order TM-wave from an impedance loaded parallel plate waveguide. Hopf equation, the hybrid method that we will. The solution involves infinitely many unknown constants satisfying an infinite system of linear algebraic equations which can be solved approximately through numerical procedures. Some computational results showing the effects of the impedances of the plates and the plate to plate separation distance on the radiation phenomenon are also presented. Scattering of obliquely incident, perpendicularly polarized plane wave by a dielectric circular cylinder, which is buried in a grounded dielectric layer has been considered.
Dielectric cylinder has low dielectric contrast from the host grounded dielectric layer.
The solution to the problem has been obtained by using a perturbation technique. Unperturbed fields are calculated inside the grounded dielectric layer, when it contains no inhomogeneity. Buried low contrast dielectric cylinder has been considered as perturbation in the dielectric layer. First order perturbed fields outside the grounded dielectric layer due to the dielectric cylinder are calculated in the far-zone.