电磁脉冲对目标腔体的孔缝耦合效应数值研究

Numerical studies on coupling effects of EMP into slots

利用时域有限差分（ＦＤ－ＴＤ）方法研究了超宽带电磁脉冲（ＵＷＢ）、快上升前沿电磁脉冲（ＦＲＥＭＰ）、核电磁脉冲（ＮＥＭＰ）对目标腔体的孔缝耦合效应。研究表明：对于较小尺寸的目标腔体，在孔缝尺寸也较小的情况下，ＦＲＥＭＰ和ＵＷＢ相对于ＮＥＭＰ更容易通过腔体上的孔缝耦合进入目标腔体，而且更容易引起孔腔共振。

The purpose of this paper is to use the FiniteDifference TimeDomain(FDTD) method to study the coupling effects of UWBFREMP and NEMP into cavity with a slot on it. The studies indicate that UWB and FREMP is easier coupling into cavity through slots than that of NEMP, and UWB and FREMP can lead to resonance in the cavity and the slot.