摘要
针对电磁脉冲与非均匀微带线的耦合问题,基于时域有限差分法和卷积完全匹配层,研究了不同弯曲和不同斜切角非均匀微带线的电磁脉冲耦合特性,并对耦合机理进行了讨论。仿真结果表明:由于结构的非均匀性,微带线不同端口的耦合系数相差较大;电磁脉冲入射方向对耦合系数具有重要影响,不同方向耦合系数相差约60 dB;微带线拐角斜切对降低电磁耦合效果不明显。所得结论对提高微带电路和电子系统抗强电磁脉冲打击能力具有重要意义。
To analyse the coupling effects of electromagnetic pulse（EMP） onto nonuniform microstrip line,time-domain finite-difference（FDTD） method and convolution perfectly matched layer（CPML） are presented.The influence of the trace bend and the out miter is taken into account,and then the coupling mechanism is discussed.The results show that due to the nonuniform of microstrip line,the coupling coefficients of the ports are very different.The direction of incident EMP takes great influence on the coupling coefficients,and the difference is about 60 dB,and the out miter of microstrip line has little influence on coupling coefficients.The study is significant for improving the defense ability of microstrip circuit and electronic system against EMP effects.
出处
《电讯技术》
北大核心
2012年第10期1681-1685,共5页
Telecommunication Engineering
关键词
电磁脉冲
非均匀微带线
耦合效应
时域有限差分法
卷积完全匹配层
electromagnetic pulse
nonuniform microstrip line
coupling effects
FDTD method
convolution perfectly matched layer
