用邊界元素法計(jì)算階梯開(kāi)口波導(dǎo)的反射系數(shù)
CALCULATION OF REFLECTION COEFFICIENT FOR STEP OPEN WAVEGUIDE WITH BOUNDARY ELEMENT METHOD
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摘要: 本文報(bào)道的是用邊界元素法計(jì)算階梯開(kāi)口波導(dǎo)的反射系數(shù)。文中給出了用邊界元素法求解波動(dòng)方程問(wèn)題的主要步驟和公式,并對(duì)本問(wèn)題的一些計(jì)算細(xì)節(jié)作了說(shuō)明。把在特殊狀態(tài)下得到的結(jié)果與有關(guān)文獻(xiàn)中的結(jié)果作了比較,從而看出這種方法的有效性。
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關(guān)鍵詞:
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,電磁問(wèn)題中的邊界元素法,電子技術(shù),1982年,第2期,第23頁(yè).[3]鶩巢慎等，境界要素法による開(kāi)放領(lǐng)域問(wèn)題の解析,電気學(xué)會(huì)雷磁界理論研究會(huì)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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