不同脉宽的超宽谱电磁脉冲对细导线的耦合

UWS-EMP of Different Pulse Width Coupling to the Thin Wire Structure

摘要: 利用时域有限差分(FDTD)方法，分别对不同脉冲宽度的超宽谱电磁脉冲在自由空间中的不同长度的细导线上的感应电流进行了计算。计算结果表明：不同脉冲宽度的超宽谱电磁脉冲，在同一根细导线上所感应电流的幅值大小和波形曲线有明显不同，细导线的长度化也会产生类似现象，也就是说超宽谱电磁脉冲在细导线上的感应电流是同时和脉冲宽度和细导线长度相关的，即不同的长度对应不同的易感脉宽，同时这种相关也是有一定的规律可循的。

Abstract: The finite difference time domain (FDTD) method is used to study the coupling effects of the ultra-wide spectrumelectromagnetic pulse(UWS-EMP) to the thin wire structure of different length in free space, and the induced currents in themidpoint of wires are attained. The studies indicate that: the UWS-EMP of different pulse width lend to different induced currents inthe aspect of amplitude and waveform, the change of the thin wire’s length can also lend to it. That is to say, the induced currents arecorrelative to the pulse width as well as the length of the thin wire. We call it is that different length have different susceptible pulse,and the rule is also could be get.