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Local-mode analysis of continuous transitions in rectangular waveguides

✍ Scribed by S. Fondacci; M. Mongiardo; R. Sorrentino; L. Tarricone

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 119 KB
Volume: 8
Category: Article
ISSN: 1096-4290
DOI: 10.1002/(sici)1099-047x(199805)8:3<208::aid-mmce4>3.0.co;2-f

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✦ Synopsis

A local-modes technique is employed for the rigorous full-wave computer-aided analysis of rectangular waveguide components with continuous variations of the transverse cross section along the propagation direction. Fields in the varying waveguide sections are expanded as a sum of the modes of the locally straight waveguide, which, as a result of the longitudinal variations, are coupled to each other; the coupling coefficients depend on the transition geometry and are easily evaluated analytically. The technique offers considerable efficiency and is particularly suitable for the CAD of a large class of waveguide components like tapers, mitered bends, transitions, etc. Examples of applications and comparisons with reference data are illustrated for the case of H-plane transitions in rectangular waveguides.

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