为了提高DSP系统PCB的电磁兼容性,文中通过对DSP系统中的电磁干扰形成情况进行分析,确定了DSP系统PCB中电磁干扰形成的主要原因及传播途径。并根据DSP系统的设计特点,通过对PCB板层设计、元件布局设计、布线设计等方面进行分析,提出有效降低DSP系统干扰、提高电磁兼容性的相关措施。文中所提出的设计方法提高了高速电路设计的有效性和可靠性,可为高速DSP系统PCB设计提供有效的技术参考。

In order to improve electromagnetic compatibility in PCB of high-speed digital signal processing (DSP)system, electromagnetic interference of the DSP system was analyzed to verify its main causes and approaches of electromagnetic propagation.Based on features of DSP system design, the related methods including multilayer design, components distribution and PCB routing were proposed to reduce system interferences and improve electromagnetic compatibility effectively, The proposed methods can facilitate both effectiveness and robustness of high-speed circuits design, providing effective reference to PCB design of high-speed DSP systems.