An efficient method for determining TE and TM modes in closed waveguides made up of N cylindrical conductors

In this paper, an efficient method for calculating TE and TM modes in closed waveguides made up of cylindrical perfect electric multiconductors and homogeneous isotropic media is presented. An ad hoc analytical formulation of the problem is carried out, and special emphasis is placed on its resoluti...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2005-02, Vol.53 (2), p.670-678
Main Authors: de la Rubia, V., Zapata, J.
Format: Article
Language:English
Subjects:
Acceptability
Algorithms
Applied sciences
Approximation
Bessel series/transforms
Boundary conditions
Circuit properties
circular waveguides
Coaxial components
coaxial waveguides
Computational efficiency
Conductors
Conformal mapping
Convergence
Electric, optical and optoelectronic circuits
Electronics
Equations
Exact sciences and technology
Geometry
Helmholtz equations
Mathematical analysis
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Microwaves
multiconductor transmission lines
Perturbation methods
poles and zeros
Robustness
search methods
Tellurium
Waveguides
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Summary:In this paper, an efficient method for calculating TE and TM modes in closed waveguides made up of cylindrical perfect electric multiconductors and homogeneous isotropic media is presented. An ad hoc analytical formulation of the problem is carried out, and special emphasis is placed on its resolution. As a result, the determination of the cutoff wavenumbers is achieved using a robust and efficient algorithm. An adaptive approximation scheme is also proposed to ensure an acceptable precision and an efficient computation without missing any mode. Finally, several comparisons demonstrate the accuracy of the proposed method
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2004.840567