频率搅拌混响室原理及应用  

Theory and application of frequency stirring reverberation chamber

作　　者：程二威[1] 刘逸飞[2] 

机构地区：[1]军械工程学院电磁环境效应国家重点实验室,石家庄050003 [2]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

出　　处：《强激光与粒子束》2015年第10期5-9,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(51107147);强电磁场环境模拟与防护技术国防科技重点实验室基金项目(9140C87010214JB34005)

摘　　要：从理论上分析了混响室采用频率搅拌的可行性，仿真计算和试验测量了频率搅拌混响室内部电场的均匀性和统计特性，探索了在屏蔽效能测试中的应用。研究结果表明：频率搅拌方法能够得到空间统计均匀的电场分布，电场直角分量的模值服从瑞利分布，并且频率越高电场的均匀性和统计特性越好。在频率搅拌混响室内部测试得到开缝小尺寸屏蔽体在1～10GHz频段的屏蔽效能约为15dB，与机械搅拌混响室测试结果基本一致。The feasibility of the reverberation chamber using frequency stirring was analysed in theory.The field uniformity and statistical characteristics within the reverberation chamber were simulated and tested.And the application to measuring shielding effectiveness was investigated.The results show that the field uniformity could be got by frequency stirring,the electric field right angle components obeyed Rayleigh distribution,and the field uniformity and statistical characteristics became better with the frequency rising.The shielding effectiveness of small enclousres with an aperture was tested in a frequency stirring reverberation chamber,and the SE was about 15 dB,which was fit with the test results of the mechanical stirring reverberation chamber.

关 键 词：混响室 频率搅拌 屏蔽效能 统计特性 场均匀性 

分 类 号：O441[理学—电磁学]