基于平面波叠加的混响室场环境模拟与测试仿真  

Electromagnetic Environment Modeling and Test Simulation in Reverberation Chamber Based on Plane Waves Superposition

作　　者：刘逸飞[1] 陈永光[2] 程二威[3] 

机构地区：[1]西北核技术研究所强脉冲辐射环境模拟与效应国家重点实验室,西安710024 [2]北京跟踪与通信技术研究所,北京100094 [3]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》2017年第9期3029-3035,共7页High Voltage Engineering

基　　金：国家自然科学基金(51107147;51177174)~~

摘　　要：针对电磁混响室难以仿真的问题,分析了平面波叠加模拟混响室场分布的合理性,根据理想混响室特征给出了叠加平面波的幅值、极化角度等参数设置的细节信息。在此基础上,利用Matlab调用FEKO的混合编程方法进行了场环境模拟,检验结果表明,叠加场环境特性与混响室场分布特性保持了一致。利用该方法,对某开缝矩形腔体的屏蔽效能进行了仿真测试,并取得了与实测数据相符的结果,其屏蔽效能约为15 d B。该方法有效避免了对混响室的精确建模,大大降低了混响室条件下相关测试仿真的难度与计算量,同时为深入分析混响室场环境特性提供了一条捷径。Aiming at the electromagnetic field simulation of a reverberation chamber（RC）, we analyzed the rationality of plane waves superposition model for RC, and obtained the parameter details such as amplitude and polarization according to the ideal field characteristics. Thereby, Matlab and FEKO was used to present a method to simulate the environment in RC. The simulation results show that the superposed field can present almost the same characteristics with the RC environment. Finally, the shielding effectiveness of a slotted rectangular cavity is simulated by using the proposed method. The results are consistent with the measured data, and the shielding effectiveness is about 15 d B. This method avoids accurate RC modeling for test, so it greatly reduces the simulation difficulty and calculation. Moreover, it provides a convenient way to deeply study the field characteristics in a reverberation chamber.

关 键 词：混响室 平面波谱理论 平面波叠加 FEKO 场均匀性 统计特性 屏蔽效能 

分 类 号：TN03[电子电信—物理电子学]