电子系统电磁辐照效应实验研究  

Experimental Study of Electromagnetic Radiation Effect on Electronic System

作　　者：谭志良[1] 林永涛[1] 张荣奇[1] 

机构地区：[1]军械工程学院强电磁场环境模拟与防护技术国防科技重点实验室,河北石家庄050003

出　　处：《军械工程学院学报》2006年第4期21-24,共4页Journal of Ordnance Engineering College

基　　金：国家自然科学基金重点资助项目（50237040）

摘　　要：以某复杂电子系统为研究对象，利用千兆瓦级超宽带（UWB）电磁脉冲辐射装置进行辐照效应实验，研究了在系统开门和关门状态下，系统内04、08号组合各检测点的响应以及接收天线在不同方位时02号组合检测点上的响应特性，并对响应波形进行了频谱分析。结果表明：在场强为2．0×10^4 Vim的超宽带源（上升时间0．3ns，脉宽3～4ns）辐照时，开门的情况下系统内部电路上响应的电压有的达到1．6kV，天线最佳耦合状态下系统02组合电路上响应的电压有的也达到1．6kV，可能对电磁敏感器件造成损伤；系统开门和关门两种状态下，系统响应的带宽都在0—500MHz左右，主频为70MHz左右，远离系统的工作频率。所以，该频率电磁场并不是影响系统的主要因素，但是，过高的响应电压有时会形成带外耦合，干扰系统或造成硬损伤。The radiation effect experiment on a complicated electronic system by using of GW ultra - wide band （UWB） radiation source is carried out. In cases of opening and closing the door of equipment under test （ EUT）, the responses of test points on combination No. 04 and No. 08 of EUT are measured. The response characteristics of test points on combination No. 02 are tested at different orientations of antenna of EUT. And spectrum analysis is performed for response waveforms. The results show that the response voltage on internal circuits of EUT may reach about 1.6 kV under condition of opening door of EUT when radiated by UWB source with 2.0 ×10^4 V/m of field strength （ rise time is 0. 3 ns and pulse width is 3 - 4 ns）. The maximum response voltage on combination No. 02 is about 1.6 kV under condition of optimum coupling of antenna. In this case, some of the electronic components which are sensitive to electromagnetic field may be damaged. The response band width of EUT is about 500 MHz and main frequency point of response is about 70 MHz which is far apart from the working frequency of EUT. So the frequency of the outside electromagnetic field is not the main source which affects EUT.

关 键 词：超宽带 电磁辐照 电子系统 频谱分析 

分 类 号：TN128[电子电信—物理电子学]