Boundary-marching method for discontinuity analysis in waveguides of arbitrary cross section
Abstract
A recursive algorithm previously used in diffusion problems of geophysics and in electrostatics, is extended to wave phenomena. It is used to construct a matrix representation for an infinitely long waveguide of arbitrary cross-sectional shape. This representation is used in finite element analysis of waveguide discontinuities. In numerical tests, scattering matrices for the long guides converge to nearly full word-length in 6-7 recursion steps, and discontinuity characteristics are within 1-2 percent of known results where they exist.
- Publication:
-
IEEE Transactions on Microwave Theory Techniques
- Pub Date:
- October 1992
- DOI:
- Bibcode:
- 1992ITMTT..40.1889F
- Keywords:
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- Boundary Conditions;
- Finite Element Method;
- Propagation Modes;
- Waveguides;
- Cross Sections;
- Discontinuity;
- Variational Principles;
- Communications and Radar