圆柱体内线缆电磁脉冲耦合特性分析

摘要

A hybrid method based on finite integral technology and transmission line theory is presented to calculate the coupling of electromagnetic pulse ( EMP) onto wires enclosed in cylinder cavity with apertures. The field distribution within the cavity is calculated by finite integral technology, and Agraw-al' s equation is employed to compute the induced voltage on the cables. Validation examples of two conductor lines are given in the presence of cylinder cavity. The coupling coefficients of differential mode voltage on the cables are computed, and the impacts of slot, cables, cavity and incident wave upon coupling coefficients are analyzed.%针对具有孔缝圆柱腔体中线缆的强电磁脉冲耦合问题,提出了基于时域有限积分法和Agrawal传输线方程的混合方法.该方法利用时域有限积分法求解腔体中的场分布,采用Agrawal传输线方程计算腔体内线缆的感应电压,提高了孔缝腔体中线缆耦合特性分析的效率.以圆柱腔体中双导线为例,通过计算双导线终端感应差模电压的耦合系数,分析孔缝、导线、腔体和入射电磁脉冲对耦合特性的影响.