Department of Mathematics, Gebze Institute of Technology, P.O. Box. 141, Gebze, 41400 Kocaeli, Turkey
Copyright © 2009 Feray Hacıvelioğlu and Alinur Büyükaksoy. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
A rigorous Wiener-Hopf approach is used to investigate the band stop filter
characteristics of a coaxial waveguide with finite-length impedance loading. The representation of the solution to the boundary-value
problem in terms of Fourier integrals leads to two simultaneous modified
Wiener-Hopf equations whose formal solution is obtained by using the
factorization and decomposition procedures. The solution involves 16
infinite sets of unknown coefficients satisfying 16 infinite systems of
linear algebraic equations. These systems are solved numerically and some
graphical results showing the influence of the spacing between the coaxial
cylinders, the surface impedances, and the length of the impedance loadings
on the reflection coefficient are presented.