Nie Xiaochun, Ge Debiao, Yan Yubo, Yuan Ning. THE APPLICATION OF GENERALIZED NETWORK PRINCIPLE TO HYBRID METHOD FOR ELECTROMAGNETIC SCATTERING[J]. Journal of Electronics & Information Technology, 2000, 22(4): 626-631.
Citation:
Nie Xiaochun, Ge Debiao, Yan Yubo, Yuan Ning. THE APPLICATION OF GENERALIZED NETWORK PRINCIPLE TO HYBRID METHOD FOR ELECTROMAGNETIC SCATTERING[J]. Journal of Electronics & Information Technology, 2000, 22(4): 626-631.
Nie Xiaochun, Ge Debiao, Yan Yubo, Yuan Ning. THE APPLICATION OF GENERALIZED NETWORK PRINCIPLE TO HYBRID METHOD FOR ELECTROMAGNETIC SCATTERING[J]. Journal of Electronics & Information Technology, 2000, 22(4): 626-631.
Citation:
Nie Xiaochun, Ge Debiao, Yan Yubo, Yuan Ning. THE APPLICATION OF GENERALIZED NETWORK PRINCIPLE TO HYBRID METHOD FOR ELECTROMAGNETIC SCATTERING[J]. Journal of Electronics & Information Technology, 2000, 22(4): 626-631.
A new hybrid method based on the generalized network principle is proposed to deal with the electromagnetic scattering of a large body with cracks.Using the equivalence theorem,the total scattered field can be regarded as the summation of two parts,the scattering of the large body and that of the cracks.The former is calculated by using iterative physical optical (IPO) method directly and the latter can be computed as follows:First,the admittance matrix of the crack is extracted by using the FDTD method,thus the generalized network representation of the crack can be set up on the aperture.Then the equivalent magnetic current on the crack aperture can be computed by network principles.According to the reciprocity theorem,the scattering from the crack can be obtained finally.Some numerical results show the feasibility and efficiency of the proposed method.
Harrington R F,Mautz J R.A generalized network formulation for aperture problem.IEEE Trans.on AP,1976,AP-24(6):870-873.[2]Jeng S K.Scattering from a cavity-backed slit in a ground planeTE case.IEEE Trans.on AP,1990,AP-38(10):1523-1529.[3]黄河，聂小春，葛德彪．用FDTD提取槽口径面上的等效电磁流.1998年计算物理学会计算电磁学研讨会(SCEM98)论文集,四川成都:1998.7,78-81.[4]葛德彪,郭利强,李明之.用FDTD方法模拟稳态电磁散射时开关函数的应用.电子科学学刊,1997,15(4):441-443.[5]Obelleiro-Basteiro F,Rodriguez J L,Burkholder R J.An iterative physical optical approach for analyzing the electromagnetic scattering by large open-ended cavities.IEEE Trans.on AP,1995,AP-43(4):356-361.[6]Jin J M,Ni S S,Lee S W.Hybridization of SBR and FEM for scattering by large bodies with cracks and cavities.IEEE Trans.on AP,1995,AP-43(10):1130-1138.
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