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.
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.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2005年第1期108-112,共5页
Journal of Southwest Jiaotong University
基金
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
