混响室漫射场下PCB板多导体传输线响应分析  

Response Analysis of Multi-conductor PCB Transmission Lines in Reverberation Chamber's Diffuse Field

作　　者：王庆国[1] 谢鑫[1] 贾锐[1] 

机构地区：[1]军械工程学院静电与电磁防护研究所,石家庄050003

出　　处：《高电压技术》2016年第6期1969-1973,共5页High Voltage Engineering

基　　金：国家自然科学基金(51277180)~~

摘　　要：为研究印制电路板(PCB)多导体微带线在复杂腔室电磁环境下端点响应特性,基于Monte Carlo方法,构建混响室漫射场电磁环境来模拟腔室电磁环境;并结合Agrawal场线耦合理论,对PCB板上多导体传输线节点响应进行分析;利用混响室、频谱仪等设备搭建实验平台对仿真结果进行实验验证。结果表明:利用Monte Carlo统计方法仿真得到的全向辐照环境与混响室电磁环境有较好的一致性;多导体微带线始端感应电流峰值出现的频点不满足f=nc/2L(n=1,2,3,…;c为传输速率,一般取光速;L为传输线长度),电流感应信号会随频率的增加出现衰减趋势;微带线端接负载阻值的变化不会影响到耦合曲线的变化规律,但电流感应信号幅值会随负载阻值的增大而减小。In order to study he endpoints＇ response of printed-circuit-board（PCB） multi-conductor micro strips in the complex chamber electromagnetic environment, the Monte Carlo statistical methods were used to build reverberation chamber＇s diffuse field. The agrawal coupling theory was used to calculate the equation of multi-conductor transmission lines, for the PCB multi-conductor transmission lines＇ node responses simulation analysis. Then we verified the simulation results through experiments in a homemade experimental platform composed of the reverberation chamber, spectrum analyzer,power amplifier, current probes, photovoltaic equipment, etc. It is shown that the simulation agrees with the experiment results. The results show that the ＂full radiation electromagnetic environment＂ simulated by the Monte Carlo statistical methods agrees with the electromagnetic environment in reverberation chamber; the frequency that inductive current peak appears does not satisfy f=nc/2L（n=1, 2, 3, …; c denotes the transmission velocity, usually denotes the velocity of light; L denotes the length of transmission line）,and with the increasing of frequency, the amplitude of inductive current will attenuate; the change of the load will not affect the law of coupling curve, however, the amplitude of inductive current will decrease with the increase of load.

关 键 词：混响室 印制电路板 非均匀介质 MONTE Carlo BLT方程 场线耦合实验 

分 类 号：TN41[电子电信—微电子学与固体电子学]