Title :
A full-wave modal analysis of inhomogeneous waveguide discontinuities with both planar and circular cylindrical boundaries
Author :
Macphie, Robert H. ; Wu, Ke-Li
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
fDate :
6/1/2001 12:00:00 AM
Abstract :
A full-wave analysis of an inhomogeneous waveguide region with both planar and circular cylindrical boundaries is presented in this paper. Circular cylindrical modal functions are used to represent the fields. Field matching on the planar walls and apertures is rigorously achieved by the finite plane-wave series expansion of each modal field, whereas the addition theorem for cylindrical waves is used for rigorous field matching on the circular cylindrical boundaries. Numerical results are given for rectangular waveguides with 90° bends and rounded outer corners
Keywords :
S-matrix theory; modal analysis; rectangular waveguides; waveguide discontinuities; waveguide theory; 90 degree bends; addition theorem; apertures; circular cylindrical boundaries; circular cylindrical modal functions; cylindrical waves; field matching; finite plane-wave series expansion; full-wave modal analysis; inhomogeneous waveguide discontinuities; planar boundaries; planar walls; rectangular waveguides; rounded outer corners; Apertures; Finite element methods; Modal analysis; Nonuniform electric fields; Planar waveguides; Rectangular waveguides; Region 1; Wave functions; Waveguide discontinuities;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
