Title :
Axisymmetric modes in an inhomogeneous circular waveguide
Author_Institution :
Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan
Abstract :
The propagation constants of axisymmetric modes in a circular waveguide with an inhomogeneous dielectric profile are calculated, which are important in waveguide discontinuity problems but can not be solved by using conventional mode-matching methods. The field components D/sub p/ and E/sub /spl phi// are expanded in terms of the eigenmodes in an empty waveguide. The effects of dielectric profile parameters are analyzed. A transition phenomenon is observed when the dielectric constant in the core region is higher than that of the cladding.
Keywords :
circular waveguides; eigenvalues and eigenfunctions; waveguide discontinuities; waveguide theory; axisymmetric modes; cladding; core region; dielectric constant; dielectric profile parameters; eigenmodes; empty waveguide; field components; inhomogeneous circular waveguide; inhomogeneous dielectric profile; propagation constants; transition phenomenon; waveguide discontinuity; Dielectric constant; Eigenvalues and eigenfunctions; Equations; Loaded waveguides; Matrices; Nonuniform electric fields; Propagation constant; Tellurium; Transmission line matrix methods; Waveguide discontinuities;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.549759
