电磁兼容辐射骚扰样品测试桌的设计与研究  

The design and research of test table applied in radiated emission of electromagnetic compatibility

作　　者：叶长青[1] 赵海波[1] 王杰[1] 

机构地区：[1]惠州出入境检验检疫局,广东惠州516006

出　　处：《中国测试》2016年第4期89-92,共4页China Measurement & Test

摘　　要：为减小木质测试桌对辐射骚扰测试结果的影响,以低介电常数的聚苯乙烯颗粒为材料,设计一款高频低反射样品测试桌,参考标准GB/T 6113.104——2008测试桌影响的评估程序,搭建测试系统。使用3 m法电波暗室测试环境,在30 MHz^1 GHz和1~8 GHz两个频段对聚苯乙烯泡沫桌和木桌进行对比测试并进行数据分析,验证聚苯乙烯泡沫桌对辐射骚扰测试结果的影响。研究结果表明:测试时,应使用介电常数低、耐潮湿性、绝缘性优良和稳定性高的样品测试桌,以减小由测试桌引入的标准不确定度。该研究结论对电磁兼容领域的辐射骚扰测试、辐射杂散测试、辐射抗扰度测试具有一定的参考价值和指导意义。To decrease the influence caused by wooden test tables on the results of radiated emission measurement, a low reflective test table that is especially used in high frequency is made with low dielectric constant polystyrene. A testing system is designed as per the evaluation procedure for test table influences of standard GB/T 6113.104——2008. Comparison testing and research are done under the frequency scope of 30 MHz- 1 GHz and 1- 8 GHz in a 3- meter anechoic chamber. It turns out that the polystyrene test table has smaller influence than the wooden test table in reference to the radiated emission measurement. The experiment shows test tables characterized by low dielectric constant, moisture resistance, good insulation, and high stability should be used to reduce standard uncertainty in radiated emission measurement. The conclusions are instructive and meaningful for measuring radiated emission,spurious emission and radiated susceptibility.

关 键 词：电磁兼容 辐射骚扰 测试桌 介电常数 不确定度 

分 类 号：TN873.93[电子电信—信息与通信工程]