中文摘要：

现行的静电放电（ESD）抗扰度测试标准IEC 61000-4-2只规定了放电电流的波形,没有对实验平台上的辐射场进行说明,经常会出现实验结果不一致的情况。为解决静电放电抗扰度实验重复性差的问题,选取3种不同厂商生产的符合IEC标准规定的静电放电模拟器进行实验,并在不同位置测量放电过程中产生的磁场和电场。实验结果表明：在严格控制实验条件的情况下,模拟器的重复性可以得到保证。距离放电点较近处,不同品牌模拟器产生的电磁场一致性较差,但随着测试距离的增大差异逐渐减小。抗扰度实验平台上磁场强度随着测试距离的增加单调减少,而电场强度先减小,在靠近金属板边缘处反而增大。此外,电场和磁场均在距放电点20cm区域内变化剧烈,40cm以外区域内变化缓慢。所以,新的静电放电抗扰度测试标准应该规范放电过程中的电磁场,适当增大放电点和受试设备间的距离可提高抗扰度实验结果的一致性,并通过提高放电电压来保证测试的严酷等级。

英文摘要：

In order to resolve the limitation of test standard IEC 61000-4-2,three different electrostatic discharge（ESD） generators of which discharge currents meet the requirements of IEC 61000-4-2 are chosen to test the immunity.Both the produced electric field and magnetic field are measured at different distances during the discharge.The experimental results show that good repeatability of generator can be obtained under well controlled test conditions.The electromagnetic fields produced by different generators are distinct nearby the discharge point,but the consistencies are improved by increasing the measurement distance.On the test platform,the magnetic field intensity decreases monotonically as the distance from the discharge point increases.However,the behavior of electric field is quite different,the amplitude first decreases but increases at edges.Moreover,the electromagnetic fields change drastically within about 20 cm,but vary much more slowly when the distance from the discharge point is longer than 40 cm.As a result,the revised standard should define the electromagnetic field during the discharge;increasing the distance between discharge point and equipment under test（EUT） can improve the consistency of immunity test results.