Vector finite element method with mixed-interpolation-type triangular-prism element for waveguide discontinuities

The mixed-interpolation-type triangular-prism element is proposed and an approach based on the finite element method (FEM) with the element is formulated for the analysis of three-dimensional discontinuity problems of electromagnetic waveguides. Here, in order to treat the infinite uniform waveguide...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 1994-12, Vol.42 (12), p.2311-2316
Main Authors: Hirayama, E., Alam, S., Hayashi, Y., Koshiba, M.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Coplanar waveguides
Electric, optical and optoelectronic circuits
Electromagnetic analysis
Electromagnetic scattering
Electromagnetic waveguides
Electronics
Exact sciences and technology
Finite element methods
Finline
Hollow waveguides
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Rectangular waveguides
Waveguide discontinuities
Waveguide junctions
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Summary:The mixed-interpolation-type triangular-prism element is proposed and an approach based on the finite element method (FEM) with the element is formulated for the analysis of three-dimensional discontinuity problems of electromagnetic waveguides. Here, in order to treat the infinite uniform waveguide with arbitrarily shaped cross section, the eigenmodes of the uniform waveguide are computed by using the FEM with the high-order mixed-interpolation-type triangular element, and the analytical relations in the uniform waveguide are constructed numerically. A finline discontinuity, a dielectric-loaded waveguide, and a junction between a rectangular waveguide and a circular one are analyzed, and then the validity and versatility are confirmed.< >
ISSN:0018-9480
1557-9670
DOI:10.1109/22.339757