Title :
The higher order modal characteristics of circular-rectangular coaxial waveguides
Author :
Wang, Haiyin ; Wu, Ke-Li ; Litva, John
Author_Institution :
Commun. Res. Lab., McMaster Univ., Hamilton, Ont., Canada
fDate :
3/1/1997 12:00:00 AM
Abstract :
A rigorous analysis combining the orthogonal expansion method and Galerkin method for the higher order eigenmodes in a circular-rectangular (C-R) waveguide is presented in this paper. The Bessel-Fourier series is employed to merge the circular and rectangular coordinate systems used in the analysis. The cutoff frequencies of the higher order modes are determined with the singular value decomposition (SVD) technique. The computed results are in excellent agreement with results obtained using the finite element method. Because of its analytic form, the solution will be useful in the rigorous analysis of many practical microwave components and circuits
Keywords :
Bessel functions; Fourier series; Galerkin method; circular waveguides; coaxial waveguides; eigenvalues and eigenfunctions; rectangular waveguides; singular value decomposition; waveguide theory; Bessel-Fourier series; Galerkin method; circular-rectangular coaxial waveguides; cutoff frequencies; eigenmodes; higher order modal characteristics; microwave components; orthogonal expansion method; rigorous analysis; singular value decomposition; Coaxial components; Eigenvalues and eigenfunctions; Electromagnetic waveguides; Filters; Microwave circuits; Moment methods; Rectangular waveguides; Singular value decomposition; Waveguide components; Waveguide transitions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
