| PML吸收边界条件在孔缝耦合模拟中的应用 |
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| 引用本文： | 杨丹,方剑,廖成,任朗.PML吸收边界条件在孔缝耦合模拟中的应用[J].西南交通大学学报,2005,40(1):108-112. |
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| 作者姓名： | 杨丹 方剑 廖成 任朗 |
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| 作者单位： | 1. 西南交通大学电磁所,四川,成都,610031
2. 中国西南电子设备研究所,四川,成都,610036 |
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| 基金项目： | 863强辐射重点实验室基金资助项目，西南交通大学博士创新基金 |
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| 摘 要： | 用时域有限差分法(FDTD)模拟超宽带(UWB)脉冲入射时与目标腔体上的孔缝相耦合的过程，用单轴各向异性的完全匹配层(PML)吸收边界条件截断时域有限差分网格．通过分析目标腔体中的特定网格点并根据计算网格空间的对称性，得出了UWB脉冲通过窄缝耦合进目标，在整个腔体内发生谐振的规律．所得数值结果与前人的结论一致，表明单轴各向异性的PML吸收边界条件适用于解决电磁脉冲与孔缝耦合问题．
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| 关 键 词： | 完全匹配层 边界条件 时域有限差分法 超宽带脉冲 耦合 |
| 文章编号： | 0258-2724(2005)01-0108-05 |
Application of PML Absorbing Boundary Condition in Numerical Simulation of Pulses Coupling into Slot |
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| YANG Dan,FANG Jian,LIAO Cheng,REN Lang.Application of PML Absorbing Boundary Condition in Numerical Simulation of Pulses Coupling into Slot[J].Journal of Southwest Jiaotong University,2005,40(1):108-112. |
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| Authors: | YANG Dan FANG Jian LIAO Cheng REN Lang |
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| Institution: | YANG Dan~1,FANG Jian~2,LIAO Cheng~1,REN Lang~1 |
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| Abstract: | Finite-difference time-domain method (FDTD) was used to simulate the coupling processes of ultra-wide-band (UWB) electromagnetic pulses into a cavity with a slot, and an anisotropic perfectly matched layer (PML) absorbing medium was inserted to truncate the computational lattices. According to the symmetry of the object and examining the special nodes of grids, the effectiveness of UWB pulses coupling into the whole cavity with a slot was obtained. The results show that the uniaxial PML is a suitable absorbing boundary condition for computing the problems of pulses coupling into slots. |
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| Keywords: | PML boundary condition FDTD method UWB coupling |
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