Defined site中接地平板对测试结果影响的研究

Research on the Influence of Grounding Plate on Test Results in Defined Site

现阶段大型设备的电磁兼容发射试验标准CISPR37正在进行制定,其中对于现场测试中的重要组成部分Defined site(由于IEC标准尚处于制定中,Defined site中文定义尚不确定,文章暂用“定义场”作为该专有名词的中文解释)场地的确认成为了该标准的重点,Defined site作为一个全新概念,目标为在现场做一个场地,使得辐射发射测试结果与在暗室中的测试结果具备一定的对比性。如何优质地布置Defined site成为准确进行场地确认,完成辐射发射测试的重点。作为测试系统的影响因素,对其中Defined site中关于接地平板对整个测试系统影响做一讨论。

Nowadays,the EMC standard CISPR 37 which is for large-scale equipment in on site testing,is under being formulated,as a solution of field test,the validation for the Defined site is becoming to a key point,As a brand-new conception,Defined site is to give certain requirements to reduce the uncertainty for different test locations,make it possible that the data from Defined site and test site could be comparable.how to arrange the Defined site well has become the focus of accurate field confirmation and radiation emission test.As a key factor this article gives a discussion about the affect about the ground plane to the whole test system in Defined site.