高频PCB中EMI问题的研究

高频PEB中的EMI使得一些敏感电路、集成块的工作性能有所降低，甚至不能工作。在研究电路板中存在的电磁现象后，分析了PCB在布局、布线、滤波等方面产生EMI原因，并针对这些问题提出减小电流、降低速度、增加磁性元件等新颖的解决办法，并且在实际PEB制作中用取得了很好的效果，降低了EMI的强度。抗EMI的效果是要通过测试才能更好了解，EMI测试是必不可少的环节。

EMI problem research on higher frequency PCB

The emergence of EMI in higher frequency PCB makes some weaker electric circuits and the work performance of integrated circuits bad working, and even off work. After researching electromagnetic phenomenon,we analyzed the possible reason for EMI such as wire arrangement,wire allocation and filter and so on.We aimed at such problems as decreasing the electric current and slowing down velocity added to the magnetic element.All the new and original resolving means get very good effect in actual project application, and cut down the intensity of EMI . The effect of resisted EMI can be better comprehended by means of testing and EMI test is required indispensable.