This article studies the signal transmission loss of copper wires on printed circuit boards.First,total signal loss was divided into dielectric loss and conductor loss quantitatively based on electromagnetic theory.In particular,the scattering loss due to surface roughness of copper foil has been examined in detail.And the usefulness of the copper foil with low surface roughness has been demonstrated.
printed circuit boardsignal transmissioncopper foil surface roughnesssignal loss
维普
万方数据
