Shielded printed circuit board has signal transmission layer with one dielectric material comprises one section and another dielectric material comprises another section, and signal transmission line is arranged in former section

摘要

The shielded printed circuit board has two shielding layer, one signal transmission layer, which is arranged between the two shielding layer. One signal transmission layer has one dielectric material comprises one section (2) and another dielectric material comprises another section. A signal transmission line is arranged in the former section of one signal transmission layer.