Patent ID: 9112252
Filing Date: 2015-08-18
Classification: H01P,H05K

Abstract:
1. A differential transmission circuit comprising: a ground conductor layer; and a pair of transmission line conductors which are provided together on one side of the ground conductor layer via a dielectric layer, wherein the ground conductor layer includes a region opposite to the pair of transmission line conductors, wherein the pair of transmission line conductors and the ground conductor layer form a pair of transmission lines, wherein the pair of transmission line conductors include: a first straight line region where both the pair of transmission line conductors extend in parallel to each other in a first direction with a first width in a first layer, and a first cross region where a first transmission line conductor of the pair of transmission line conductors is formed in the first layer, a second transmission line conductor of the pair of transmission line conductors is formed in a second layer which is different from the first layer, and the pair of transmission line conductors cross the each other via the dielectric layer, the first cross region being disposed on the front side of the first straight line region, and wherein each of the widths of the pair of transmission line conductors in the first cross region is smaller than the first width.