印制电路板板级插入损耗的研究

Research on insertion loss of Printed Circuit Board

随着系统时钟频率的迅速提高,趋肤效应在高频领域的影响也越来越显著,并带来更多的插入损耗。因此,铜箔粗糙度已成为影响信号传输质量的重要因素之一。文章简要介绍了有关插入损耗和趋肤效应的理论知识,并详细论述了与趋肤效应相关的铜箔粗糙度、棕黑化处理、表面涂覆方式等因素对PCB传输线插入损耗的影响。

With the system clock frequency developing, the skin effect is more obvious and also brings more insertion loss in the field of high-frequency. Therefore, copper surface roughness has been one of the key effects to signal transmission quality. This paper firstly introduced some theories about insertion loss and skin effect, and then discussed the effects on several factors related to skin effect such as roughness, oxide treatments and surface finish treatments.