Fast and accurate mode-spectrum analysis of waveguide structures using a new set of edge-conditioned basis functions
| Autor: | Smain Amari, John M. Damaschke, Jens Bornemann |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Eigenmode expansion
Mathematical analysis Basis function Computer Graphics and Computer-Aided Design Computer Science Applications law.invention Reduction (complexity) symbols.namesake Fourier transform Modal law Convergence (routing) symbols Electrical and Electronic Engineering Waveguide Microwave Mathematics |
| Zdroj: | International Journal of RF and Microwave Computer-Aided Engineering. 8:215-225 |
| ISSN: | 1099-047X 1096-4290 |
| Popis: | A new set of edge-conditioned basis functions is used to determine the modal characteristics of a large variety of nonstandard waveguide structures. Since the electromag- netic field includes the proper edge conditions at metallic corners and since the new basis functions are readily Fourier transformed, a considerable reduction in computational effort with respect to standard modal field-matching techniques is observed. Similar to procedures involving other known sets of applicable basis functions, the analysis achieves a higher reliability level, as it completely avoids relative convergence phenomena. The method is demonstrated at the examples of several waveguide structures, such as the L-shape, T-shape, and cross-iris-shape waveguides; the rectangular coaxial waveguide; and the ridged circular waveguide. Results for the cut-off wave numbers of TE and TM modes are shown to be in excellent agreement with those from standard modal field-matching techniques and previously published data. Q 1998 John Wiley & Sons, Inc. Int J RF and Microwave CAE 8: 215)225, 1998. |
| Databáze: | OpenAIRE |
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