The Application of Finite Element Method on Solving Waveguide Discontinuities of Arbitrary Cross-Section

• Main Authors: Chau-Ching Chiong, 章朝盛
• Other Authors: Ruey-Beei Wu
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/50926953643557478136

碩士 === 國立臺灣大學 === 電信工程學研究所 === 87 === Based on Finite Element Method(FEM), in this paper we try to improve the existing program, so that we can solve waveguide discontinuities with ports of arbitrary cross-section. This new program combines 3-dimension edge-based FEM for inner fields and 2-dimension node-based FEM for modal field on the boundaries. That is why it can handle waveguide discontinuities with ports of arbitrary cross-section easily. Besides, we show in the paper clearly how the calculated modal fields of boundary on nodes couple to the fields defined on edge. In the latter part of the paper, we confirm the program by comparing the result with others, both in regular and irregular cases. And then, by designing a ridge waveguide T-junction divider, we show the facility of the program.