分析了电磁场近场探测的测试原理,得到了磁场探头测量电压信号的计算公式,以及以电路模型为基础的近场强度计算的随机模型。介绍了实用的测试系统构成,可以应用于实际的电磁兼容测试和失效诊断分析。
The principle of the electromagnetic near-field detection is analyzed. The voltage signal calculation formula measured by magnetic field probe has been obtained. And the stochastic model for calculation of the near-field intensity based on circuit model is provided. A useful measurement system is presented. It can be applied to the actual electromagnetic compatibility testing and failure diagnosis for equipment under test.