Title :
A method for the determination of modal fields in waveguides with arbitrary cross-section
Author :
Da Silva, Luiz Costa ; Branco, Marcos Guimarães Castello
Author_Institution :
Catholic Univ. of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Abstract :
A numerical method for the determination of modal fields and propagation constants of metallic waveguides with arbitrary cross-section is developed, based on dyadic Green´s functions and the moment method. It results in a representation of the modal fields as a series over orthogonal functions (the eigenfunctions of a rectangular waveguide, circumscribing the waveguide with arbitrary cross-section). Application to ridge, triangular and circular waveguides shows the accuracy of the method
Keywords :
Green´s function methods; eigenvalues and eigenfunctions; numerical analysis; waveguide theory; arbitrary cross-section; circular waveguides; dyadic Green functions; eigenfunctions; metallic waveguides; modal fields; moment method; numerical method; orthogonal functions; propagation constants; rectangular waveguides; ridge waveguides; series; triangular waveguides; Current density; Eigenvalues and eigenfunctions; Electromagnetic waveguides; Equations; Finite element methods; Impedance; Moment methods; Propagation constant; Rectangular waveguides; Tellurium;
Conference_Titel :
Microwave and Optoelectronics Conference, 1999. SBMO/IEEE MTT-S, APS and LEOS - IMOC '99. International
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-5807-4
DOI :
10.1109/IMOC.1999.866144
