矩形波导E面不连续性的DDM/FEM分析  

Analysis of E-plane Discontinuity in a Rectangular Waveguide by the DDM/FEM Method

作　　者：周平[1] 徐金平[2] 

机构地区：[1]淮阴师范学院物理系 [2]东南大学毫米波国家重点实验室,南京210096

出　　处：《微波学报》2006年第1期1-4,共4页Journal of Microwaves

基　　金：国家自然科学基金(60471017);江苏省教育厅自然科学基金(02KJD140007)

摘　　要：应用区域分解法(DDM)结合有限元法(FEM)分析矩形波导E面不连续性问题,将原求解区域分解为若干个非重叠的子域,在子域的虚拟边界上采用吸收虚拟边界条件,以保证相邻子域间的波传播。分别计算了矩形波导中加载双金属膜片和双介质柱时的散射系数,结果与有关文献一致。采用这种技术,大大地减少了对计算机内存的需求。The domain decomposition method （DDM） and finite element method （FEM） are combined to analyze the E - plane discontinuity in a rectangular waveguide. The original large domain is divided into several nonoverlapping subdomains. The absorbing fictitious boundary condition is used to ensure the propagation of wave between adjacent subdomains on the boundary of each subdomain. As the verification example, the scattering coefficient of double metal strips and double dielectric posts in rectangular waveguide are calculated. The results in this paper agree well with those in literature. In this way, the required computer memory is greatly reduced.

关 键 词：区域分解法 有限元法 虚拟边界条件 矩形波导 

分 类 号：TN814[电子电信—信息与通信工程] U463.218.6[机械工程—车辆工程]