Patent ID: 7301418
Filing Date: 2007-11-27
Classification: H01P,H05K

Abstract:
1. A differential transmission line comprising: a substrate; a ground conductor layer disposed on a rear side of the substrate; and a first signal conductor and a second signal conductor disposed in parallel to each other on a front side of the substrate, the first signal conductor and the ground conductor layer composing a first transmission line, and the second signal conductor and the ground conductor layer composing a second transmission line, wherein, the differential transmission line includes two straight regions in which the first and second transmission lines extend linearly and a curved region interconnecting the two straight regions; the first signal conductor is disposed in a position relatively close to a center of curvature of the curved region, and the second signal conductor is disposed in a position relatively far from the center of curvature; in the curved region, a plurality of slots which are orthogonal to a local signal transmission direction are provided in the ground conductor layer; and the plurality of slots intersect the first signal conductor, the plurality of slots being connected to one another on an inner side of curvature of the curved region.