The parallipiped mesh and mesh change in the 3D TLM method
Abstract
The use of parallelipiped and variable-size meshes in the transmission-line-matrix (TLM) numerical-analysis technique for waveguide structures is explained, extending the 2D method of Saguet and Pic (1981) to three dimensions. The theory of the meshes, involving serial and parallel elementary nodes, is explored; the implementation is described; and the resonance frequencies of a rectangular cavity with fin-line structures (similar to that used by Hoefer and Ros, 1979) are computed. The results are presented in a table and compared to the theoretical values. The resonance frequency is obtained with accuracy 5.8 percent in 410 sec of CPU time, as compared with the 240 min needed by Hoefer and Ros to achieve 9.7-percent accuracy with the conventional TLM method.
- Publication:
-
Electronics Letters
- Pub Date:
- March 1984
- DOI:
- 10.1049/el:19840148
- Bibcode:
- 1984ElL....20..222S
- Keywords:
-
- Computational Grids;
- Matrices (Mathematics);
- Parallelepipeds;
- Transmission Lines;
- Waveguides;
- Resonant Frequencies;
- Run Time (Computers);
- Electronics and Electrical Engineering