摘要
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。
This paper presents a novel antenna of NEMP (nuclear electromagnetic pulse) radiating-wave simulator, which is analyzed and optimized using the finite-difference time domain (FDTD) method. The intense voltage pulse is fed as the source to this antenna by the coaxial line. The parallel plate transmission line and the size of the transverse electromagnetic horn are optimized. The near field of antenna is analyzed, and the effects of the size on the near field are also given. The antenna designed in this paper can well satisfy the requirement for studying the EMP effects.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2004年第5期641-644,共4页
High Power Laser and Particle Beams
基金
国防科技基础研究基金资助课题
关键词
电磁脉冲
辐射波模拟器
天线
时域有限差分
Electromagnetic pulse (EMP)
Radiating-wave simulator
Antenna
Finite difference time domain method
