X波段4单元微带天线阵辐照响应  

Response of X-band 4-unit microstrip antenna array to high power electromagnetic pulse

作　　者：李磊[1] 张昕[1] 孙亚秀[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001

出　　处：《强激光与粒子束》2014年第8期160-165,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(51209055);中央高校基本科研业务费专项资金项目(HEUCFR1124)

摘　　要：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-unit microstrip antenna array to high power electromagnetic pulse is calculated by using the finite difference time domain method and proposed singularity solving technology of conductor edge which maintains high accuracy and computation efficiency. The simulation results show that the maximum response voltage is caused by the superposition of in- cident 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 increases as 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 moves to lower frequency band as the increase of the two angles mentioned above.

关 键 词：微带天线阵 X波段 高功率电磁脉冲 时域有限差分法 奇异性处理 

分 类 号：TN011[电子电信—物理电子学]