Simplified Calculation Method for Transient Field of Transverse Electromagnetic Horn Antenna Used by High-altitude Electromagnetic Pulse Simulator  

作　　者：WANG Yun CHEN Yongguang WANG Qingguo 

机构地区：[1]Department of Postgraduate, the Academy of Equipment, Beijing 101416, China [2]Mechanical Engineering College, Shijiazhuang 050003, China

出　　处：《高电压技术》2013年第10期2422-2430,共9页High Voltage Engineering

基　　金：Project supported by National Natural Science Foundation of China（51177174）.

摘　　要：For conveniently calculating the radiated electric field of transverse electromagnetic(TEM) horn antenna,an approximate simplified analytical calculation method is suggested.This method divides the horn to a system of V-antennas and superimposes the fields of all V-antennas to obtain the field of the TEM horn.The method is compared with the traditional analytical method and numerical method.The obtained results suggest that the proposed method is valid,simple and that it can fastly calculate the radiated electric field of the TEM horn antenna in an arbitrary space with an arbitrary excitation voltage.Based on this method,radiation of the TEM horn antenna of a high-altitude electromagnetic pulse(HEMP) simulator is simulated.Rise time,pulse width,peak value of electric field,and field distribution are analyzed.Results show that the TEM horn antenna can be used in HEMP simulators: the near field waveform is closer to the standard waveform than to the far field waveform; the standards for the rise time and the peak value of electric field are easily satisfied; the pulse width of the radiated field can be increased by broadening the pulse width of an excitation source and by making the antenna of a properFor conveniently calculating the radiated electric field of transverse electromagnetic （TEM） horn antenna, an approximate simplified analytical calculation method is suggested. This method divides the horn to a system of V-antennas and superimposes the fields of all V-antennas to obtain the field of the TEM horn. The method is compared with the traditional analytical method and numerical method. The obtained results suggest that the proposed method is valid, simple and that it can fastly calculate the radiated electric field of the TEM hom antenna in an arbitrary space with an arbitrary excitation voltage. Based on this method, radiation of the TEM horn antenna of a high-altitude electromagnetic pulse （HEMP） simulator is simulated. Rise time, pulse width, peak value of electric field, and field distribu- tion are analyzed. Results show that the TEM horn antenna can be used in HEMP simulators： the near field waveform is closer to the standard waveform than to the far field waveform; the standards for the rise time and the peak value of electric field are easily satisfied; the pulse width of the radiated field can be increased by broadening the pulse width of an excitation source and by making the antenna of a proper length

关 键 词：TEM喇叭天线 电磁脉冲模拟器 简化计算方法 高空电磁脉冲 瞬态场 标准波形 上升时间 脉冲宽度 

分 类 号：TN82[电子电信—信息与通信工程] TM937[电气工程—电力电子与电力传动]