Yakup Hameş

Plane Wave Diffraction by Dielectric Loaded Thick-walled Parallel-plate Impedance Waveguide - Abstract

high frequency diffraction of E z -polarized plane waves by a dielectric loaded thick-walled parallel-plate impedance waveguide is investigated rigorously by using Fourier transform technique in conjunction with the mode-matching method. Relying upon the image bisection principle, the original problem is splitted up into two simpler ones and each individual boundary-value problem is formulated with this mixed method which gives rise to a scalar Wiener-Hopf equation of the second kind. The solution of each Wiener-Hopf equation contains infinitely many constants satisfying an infinite system of linear algebraic equations. A numeric solution of this system is obtained for various values of the dielectric constant, plate impedances plate thickness, and the distance between the plates through which the effect of these parameters on the diffraction phenomenon is studied.

Investigation of Thickness Effects on the TM-Wave Radiation from a Thick Impedance-Loaded Parallel-Plate Radiator

Abstract In this work, the influence of the plate thickness on the lowest order TM-wave radiation is investigated by using the mode-matching method in conjunction with the Fourier transform technique. While the classical formulation leads to an intractable matrix Wiener-Hopf factorization, the hybrid method adopted here reduces the related boundary value problem to a scalar modified Wiener-Hopf equation of the second kind. The solution involves infinitely many unknown constants satisfying an infinite system of linear algebraic equations susceptible to a numerical treatment. Some computational results illustrating the effect of the plate thickness and the plate impedances on the radiation phenomenon are revealed.