高电压技术2012，Vol.38Issue(11)：2828-2835,8.
同轴电缆强电磁脉冲辐照下的终端负载响应规律
Response Law of Coaxial Cable Terminal Load Under High Intensity Electromagnetic Pulse Irradiation
摘要
Abstract
In order to study the coupling response law of ultra-wide band(UWB)irradiation to coaxial cable,we experimentally researched the UWB irradiation effect on typical radio frequency(RF)coaxial cables,in which the device or subsystem connected by the coaxial cable was equivalent to a lumped load.Based on the test results,the terminal load response of coaxial cable was analyzed.The conclusions are drawn that,firstly,the coaxial cable response possesses a characteristic of frequency selecting to electromagnetic irradiations,while the peak of terminal load response voltage appears at discrete frequency points where the relative lengths of cable are integral multiple of 1/2;secondly,when the coaxial cable is irradiated by UWB,the induced sheath current leads to a differential-mode induced voltage between the inner conductor and the shielded layer through the transfer impedance,and the internal resistance of this induced voltage source becomes the characteristic impedance of the coaxial cable;thirdly,the change in terminal load value does not affect the response waveform but affects the peak value of induced voltage,while the voltages on the terminal load and the internal resistance of the equivalent induced voltage source obey the theory of partial voltage.Moreover,when adopting different length connecting cables in shielded room,the terminal load response voltage and peak value frequency points are similar,indicating that the length does not obviously affect the response.关键词
同轴电缆/超宽带（UWB）辐照/终端负载/响应规律/感应电压源/转移阻抗Key words
coaxial cable/ultra-wide band(UWB)irradiation/terminal load/response law/induced voltage source/transfer impedance分类
信息技术与安全科学引用本文复制引用
潘晓东,魏光辉,李新峰,卢新福..同轴电缆强电磁脉冲辐照下的终端负载响应规律[J].高电压技术,2012,38(11):2828-2835,8.基金项目
国家重点基础研究发展计划（973计划） （）
国家自然科学基金 （）
