With the experience of PCB design, this paper discusses some basic EMC concepts about PCB design technique with high-speed and high-frequency signals, and presents some rules and methods in the EMC design of PCB with digital and analog mixed signals.

• 结合PCB设计的经验,首先探讨了包含高速、高频信号PCB设计中电磁兼容性的基本问题,接着给出针对高速数模混合信号PCB设计中具体的电磁兼容性设计原则和方法。