用边界元素法计算阶梯开口波导的反射系数
CALCULATION OF REFLECTION COEFFICIENT FOR STEP OPEN WAVEGUIDE WITH BOUNDARY ELEMENT METHOD
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摘要: 本文报道的是用边界元素法计算阶梯开口波导的反射系数。文中给出了用边界元素法求解波动方程问题的主要步骤和公式,并对本问题的一些计算细节作了说明。把在特殊状态下得到的结果与有关文献中的结果作了比较,从而看出这种方法的有效性。
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Abstract: In this paper, the boundary element method (BEM) and the finite element method (FEM) are compared. Then the formulation of Helmholtz equation by BEM and the ealeulation of the reflection coefficient for step-open parallel plate waveguide by BEM are presented. Finally the flow-chart of the program and the computed results are given. Comparison of the computed results for the standing wave state with those given by the related literature shows that the computed results are reasonable. -
C. A. Brebbia, The Boundary Element Method for Engineers, Pentech Press, (1978).[2]李忠元,电磁问题中的边界元素法,电子技术,1982年,第2期,第23页.[3]鹜巢慎等，境界要素法による開放领域问题の解析,電気学会雷磁界理論研究会資料,EMT-81-15,1981年.[4]F. Sporleder, Waveguide Tapers Transitions and Couplers, (IEE Electromagnetic Waves Series 6), IEE, 1979. -
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