新颖的时频对照法解决EMI问题

Novel Time-Frequency Cross Methods to Resolve EMI Issues

在产品开发的EMI测试和整改过程中，经常会遇到很多问题很难用常见的电磁干扰理论进行解释和解决。本文提出一种新颖的时频对照法来解释并解决这些EMI问题。时频对照法借助近场探头和频谱分析仪，确认产品中隐藏的电磁场分布，准确定位噪声源位置和其传播途径，结合实际案例来阐述如何通过抑制噪声源本身强度来解决EMI问题。

During resolving the product EMI issues, it is difficult for the general EMI theory to explain the root cause of some EMI phenomenon. Novel Time-Frequency Cross method was proposed to confirm the root causes and resolve the EMI issues. Based on the three EMC elements, the Time-Frequency Cross method can confirm the exact location of the noise and its transfer path according to the hidden electric-magnetic field distribution. And resolved the EMI issue by suppressed the noise strength itself with the real case.