采用时域有限差分法, 并结合导体边缘奇异性处理技术, 在不降低计算效率的情况下, 保证了计算精度, 得到了高功率电磁脉冲辐照下X波段4单元微带天线阵的响应。计算结果表明: 馈电点最大响应电压峰值由天线阵各阵元接收的入射脉冲在馈电点叠加引起, 且天线阵中主要存在与馈电点激励天线阵不同模式的波。响应电压峰值随着入射脉冲波矢量与正z轴夹角的减小而增大, 随着入射脉冲波矢量xOy平面投影与正x轴夹角的增大而增大, 频谱随着上述两个夹角的增大均向低频转移。

Response of X-band 4 units microstrip antenna array illuminated by high power electromagnetic pulse is calculated by using the finite difference time domain method and proposed singularity solving technology of conductor edge which maintain high accuracy and computation efficiency. Simulation results show that the maximum response voltage is caused by the superposition of incident pulse in feeding point received by array elements, while the existed mode of wave in the antenna array is different from which motivated in feeding point. Peak response voltage is increasing by the increase of the angle between incident pulse wave vector and z axis, or the decrease of the angle between incident pulse wave vector in xOy plane projection and x axis. Response spectrum gradually moved to lower frequency band as increase of the two angles mentioned above.