金属桌面接地电阻对辐射发射测试结果的影响  

Effect of Metal Table Grounding Resistance on Radiated Emission Testing Results

作　　者：刘凯宙 张志清 韩竹梅 李秋云 董世豪 赵若冰 Liu Kaizhou;Zhang Zhiqing;Han Zhumei

机构地区：[1]煤科(北京)检测技术有限公司 [2]中国煤炭工业协会

出　　处：《安全与电磁兼容》2025年第2期78-82,共5页Safety & EMC

基　　金：煤科院技术创新二类项目(2023CX-II-12);煤炭科学技术研究院有限公司新产品新工艺开发项目(2023CG-JC-06,2024CG-JC-06)。

摘　　要：GJB 151B-2013规定的电磁兼容测试中,被测样品通常放置在接地金属桌面上。如果金属桌面接地不良,其上的电荷会在样品传导骚扰电压的影响下发生变化,接地金属桌面会作为天线将样品的传导骚扰辐射出去,造成辐射发射测试超标。针对实际测试中出现的金属桌面接地不良导致的辐射发射超标问题,优化接地后,测试结果大大改善。In the electromagnetic compatibility test specified in GJB 151B-2013,the sample to be tested is usually placed on a grounded metal table.If the grounded metal table is poorly grounded,the charge on it will change under the influence of the sample conduction disturbance voltage,and the grounded metal table will be used as an antenna to radiate out the conducted disturbance of the sample,causing the radiation emission test to exceed the standard.In response to the issue of radiation emission exceeding the standard caused by poor grounding of the metal table in actual testing,the test results were greatly improved after the grounding was optimized.

关 键 词：电磁兼容 辐射发射 传导骚扰 电波暗室 测试方法 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]