国军标151B RE102低频段测试方法分析与研究  

Analysis and research of GJB151B RE102 low frequency test method

作　　者：胡广[1] 万发雨[1,2] 

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044 [2]南京信息工程大学气象灾害预报预警与评估协同创新中心,南京210044

出　　处：《电子测量与仪器学报》2017年第2期185-192,共8页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(61601233);江苏省自然科学基金(BK20150918);江苏省高校自然科学研究基金(14KJB510017);江苏省双创团队人才计划(SRCB201526);江苏省"信息与通信工程"优势学科资助项目

摘　　要：国军标151B RE102与国军标151A低于30 MHz频段的测试方法相比,拉杆天线的接地方式和高度上有重大调整,直接影响测试结果的精确度。为研究测试方法的改变对测试结果的影响,利用仿真和实验的方法,基于电路和电磁理论从两种标准中关于拉杆天线的接地网络和高度的不同点入手对测试结果的差异性进行分析,得出旧标准测试结果在2~30 MHz频率段高出新标准5~10 d B,并且测试结果表明旧标准的测试方法易产生谐振现象,在低频段电源线是导致RE102超标的主要原因。对于贯彻国军标151B有推进作用,有助于EMC工程师理解接地方式对EMI测试的影响和对电子设备RE102测试结果进行分析,便于更好地处理辐射超标和异常结果,同时避免对电子设备辐射发射的误判。Compared GJB151 B RE102 test method lower than 30 MHz frequency band with that of GJB151 A,the rod antenna grounding network and the height are changed greatly,which directly influences the accuracy of measurement results. To research the influence of the changed test method on measurement results,simulation and experimental methods are utilized,the different measurement results caused by different grounding network and the height of rod antenna are analyzed based on the circuit theory and electromagnetic theory.Finally,the paper concluded that the radiated emission results by GJB151 A standard are 5 ~ 10 d B higher than that of GJB151 B in 2 ~30 MHz frequency band. These measurement results also show that the GJB151 A test setup will lead to resonance phenomenon.Furthermore,the power cord is the main reason that RE102 measurement results exceed the limit line at low frequency. The research will promote the implementation of GJB151 B,help EMC engineers to understand the impact of grounding for EMI test and analyze RE102 measurement results of electronic equipment. It also helps them to handle results exceeded limit line and abnormal results,and to avoid giving misjudgment about radiated emission of electronic equipment.

关 键 词：辐射发射 GJB151A GJB151B 拉杆天线 接地网络 

分 类 号：TM937.5[电气工程—电力电子与电力传动] TN98[电子电信—信息与通信工程]