强激光与粒子束, 2004, 16 (5): 641, 网络出版: 2006-05-15
基于TEM喇叭的辐射波模拟器天线的近场特性
Near-field characteristics of radiating-wave simulator antenna based on TEM horn
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
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.
Abstract
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.
田春明, 王建国, 陈雨生, 葛德彪. 基于TEM喇叭的辐射波模拟器天线的近场特性[J]. 强激光与粒子束, 2004, 16(5): 641. TIAN Chun-ming, WANG Jian-guo, CHEN Yu-sheng, GE De-biao. Near-field characteristics of radiating-wave simulator antenna based on TEM horn[J]. High Power Laser and Particle Beams, 2004, 16(5): 641.
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