电磁脉冲对带孔腔体耦合的频域分析  

Analysis of EMP Coupling Process and Effectiveness to the Cavity with Capture in Frequency- Domain

作　　者：孙东阳[1] 毛从光[1] 崔志同[1] 陈鹏[1] 吴刚[1] 

机构地区：[1]西北核技术研究所,西安710024

出　　处：《核电子学与探测技术》2014年第10期1213-1217,共5页Nuclear Electronics & Detection Technology

基　　金：自然科学基金资助课题(51107102)

摘　　要：利用时域有限差分法研究了电磁脉冲对带孔腔体的耦合效应,将时域计算结果变换到频域。利用现有的频域解析结果对该问题进行分析:时域中耦合电场的强弱关系在频域中有所改变;电磁脉冲在腔内激起的谐振与同尺寸谐振腔的谐振模式吻合;与孔外沿作用后的脉冲电场,通过孔的过程可近似看作通过波导的过程;不同脉冲标准入射时,孔和腔内不同位置的频域幅值的比例关系相同。The effect of electromagnetic pulse coupled to the cavity with capture is studied using finite difference time-domain method .The calculating results in time -domain are transformed to frequency domain .Then the results are analyzed in frequency domain using analytical results .The coupling fields big or small in time do-main change in frequency domain .The resonance modes in the cavities excited by the different EMPs are deter -mined only by the physical dimensions .The fields passing through the hole can be taken as the guided waves . The ratios of the magnitudes in frequency -domain located at the hole and the certain points in the cavity are i-dentical and almost do not vary with the incident EMPs .

关 键 词：FDTD 电磁脉冲 带孔腔体 孔缝耦合 频域分析 

分 类 号：O441.4[理学—电磁学]