论文部分内容阅读
给出一种新型核电磁脉冲辐射波模拟器天线,并用时域有限差分方法分析和优化天线的结构。天线的激励源是由同轴线馈入的强电压脉冲。优化了平行板传输线和TEM喇叭的尺寸,并对天线的近场进行分析,给出了天线尺寸对近场特性的影响。数值模拟结果表明,在距离天线口径100m处的电场强度可达20kV/m。
A new type of nuclear electromagnetic pulse radiation simulator antenna is given, and the structure of the antenna is analyzed and optimized by the finite difference time domain method. The excitation source of the antenna is a strong voltage pulse fed by the coaxial line. The size of the parallel plate transmission line and the TEM speaker are optimized, and the near field of the antenna is analyzed. The effect of the antenna size on the near field characteristics is also given. The numerical simulation results show that the electric field intensity can reach 20kV / m at the distance of 100m from the antenna.