混响室条件下的辐射敏感度测试新方法

摘要

提出了一种基于统计平均思想的新的辐射敏感度测试方法,在大量实验的基础上验证其可靠性。两种工作模式分别采用位于测试区域内的接收天线在统计平均时间内接收环境场的平均值和所有步进位置测试结果的平均值作为最终测试结果。实验结果表明该方法测试过程简单,能够得到给定设备在任意敏感频点的辐射敏感度阈值,且具有良好的测试可重复性。将国际电工委员会（IEC）颁布的IEC61000-4-21第二版新标准与旧版本中关于步进模式最少独立采样位置的数量做了简要对比,通过实验数据验证了新版本的测试结果。%A new method of susceptibility test in reverberation chamber based on statistics theory is proposed in this paper.With the purpose of getting the testing method,the statistical mean time which can solve the problem of unsteadiness field is defined.And the results from this method are validated by a large number of susceptibility experiments in the lab.When RC in stirred mode,the susceptibility threshold should be the statistical mean field strength of the location where the antenna is.While in tuned mode,the threshold should be the mean field strength of all the independent positions.The experiments show that this method is simple and can obtain the susceptibility threshold at any frequency with well repeatability.The comparison between first and second edition of IEC61000-4-21 is presented in this paper and the results are also validated.