现代电子系统的电磁兼容性设计

现代电子技术的高速发展，使电子系统广泛地应用于各个领域，而电子系统在自身对外界产生电磁干扰的同时也在受到外部电磁环境的干扰，所以电子系统的电磁兼容性的研究就显得尤为重要了，文章针对现代电子系统中存在的各种电磁干扰，分析了其产生的途径和原因，电子系统最终要形成印刷电路板(PCB)才是一个实用的系统。所以PCB设计中的电磁兼容性会对整个系统的可靠性产生很大的影响，文章对电子系统的PCB设计也提出了电磁兼容性的设计原则。

EMC Design in Modern Elestronic Systems

The rapid development of modern electronic technology makes electronic systems widely used in all kinds of fields. These electronic systems are creating Electromagnetic Interference (EMI) as well as affected by the electromagnetic environment, so the study of the Electromagnetic Compatibility (EMC) is quite important in this respect. This paper at first analyses the way and the reason of the production of the interferences that appear in modern electronic systems. A practical electronic system should be finally in the form of Printed Circuit Board (PCB) and the PCB's EMC will largely affect the stability of the whole system. Therefore this paper also puts forward the PCB design principle according EMC.