一种电磁脉冲辐射系统设计  

A design of electromagnetic pulse radiation system

作　　者：李强兵 刘丹[1] LI Qiangbing;LIU Dan(China Helicopter Research and Development Institute,Aviation Industry Corporation of China,Jingdezhen Jiangxi 333000,China)

机构地区：[1]中国航空工业集团公司中国直升机设计研究所,江西景德镇333000

出　　处：《太赫兹科学与电子信息学报》2021年第3期453-457,共5页Journal of Terahertz Science and Electronic Information Technology

摘　　要：提出一种电磁脉冲辐射系统设计方案,此系统由Marx发生器、短路-锐化组合开关型脉冲形成线和带低频补偿的高功率超宽带横向电磁波(TEM)喇叭天线组成。Marx发生器产生的单极脉冲经过短路-锐化组合开关型脉冲形成线锐化成双极脉冲,然后馈入天线进行辐射。仿真结果表明,在充电电压为10 kV时,电磁脉冲源可产生脉冲宽度1.41 ns、峰值功率7.69 MW的双极脉冲,此双极脉冲频谱主要分布在0~1.6 GHz频率范围内;高功率超宽带TEM喇叭天线带宽为0.625~2.9 GHz(相对带宽为129%),功率容量可达10 MW,能有效地将电磁脉冲源产生的双极脉冲辐射出去。A design scheme of electromagnetic pulse radiation system is proposed. The system consists of a Marx generator, a chopping-peaking combination switch pulse forming line and a high-power ultra-wideband Transverse Electro-Magnetic(TEM) wave horn antenna with low-frequency compensation. The unipolar pulse generated by the Marx generator is formed into bipolar pulse by the chopping-peaking combination switch pulse forming line, and then fed into the antenna for radiation. The simulation results show that the electromagnetic pulse source can generate bipolar pulse with pulse width of 1.41 ns and peak power of 7.69 MW when the charging voltage is 10 kV. This bipolar pulse spectrum is mainly distributed in the frequency range of 0-1.6 GHz. The antenna bandwidth of high-power ultra-wideband TEM horn antenna is 0.625-2.9 GHz(the relative bandwidth is 129%) and the power capacity of the antenna can achieve 10 MW, which can effectively radiate bipolar pulses generated by electromagnetic pulse source.

关 键 词：电磁脉冲 MARX发生器 短路-锐化组合开关型脉冲形成线 高功率超宽带TEM喇叭天线 

分 类 号：TN784[电子电信—电路与系统]