混响室散射场条件下的场线耦合数值计算  

Numerical Calculation for Field-line Coupling of Diffuse Fields in Reverberation Chamber

作　　者：贾锐[1] 王庆国[1] 程二威[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》2012年第11期2823-2827,共5页High Voltage Engineering

基　　金：国家自然科学基金(51277180);国家重点实验室基金(9140C87020211JB34)~~

摘　　要：为探究混响室(reverberation chamber,RC)散射场条件下的电磁场与导线之间的耦合规律,利用矩量法对混响室散射场条件下的场线耦合规律进行了仿真研究。根据谐振腔理论,分析了理想情况下混响室腔体内的电磁环境,利用电磁仿真软件FEKO构造与真实混响室尺寸1:1的仿真模型,并在仿真模型的测试区域内放置不同长度、形状的导线,通过数值计算对导线中的平均感应电流进行仿真计算。数据结果表明:导线中的平均感应电流呈谐振分布;当导线弯曲时,平均感应电流的分布与直导线情况相同;当导线出现折点时,折点处为平均感应电流极小值,折点两侧平均感应电流反向。In order to investigate the field-line coupling between electromagnetic fields and transmission lines in diffusion electromagnetic field,a simulation research based on the method of moment（MOM）is carried out.According to the cavity theory,the electromagnetic（EM）environment inside a reverberation chamber（RC）is analyzed.Then a RC model at the scale of 1：1is constructed based on the electromagnetic simulation software FEKO.The transmission lines with different lengths and shapes are placed in the RC model and their average induced currents are numerically calculated.The simulation results show that the average induced current is at resonance with a period of integer times of the half radiation electromagnetic wavelength.The distribution of the average induced current in bended lines is the same as that of the straight ones.When there is a vertical bend point on the line,the minimum include current appears at the point,and the average induction currents on both sides of the point are reversed.

关 键 词：混响室(RC) 散射场 感应电流 数值计算 传输线 电磁兼容(EMC) 

分 类 号：TN03[电子电信—物理电子学]