Patent ID: 9572246
Date: 2017-02-14
CPC Classifications: H01R,H05K

Claim:
1. A printed wiring board comprising a pattern layer, an insulating layer and a ground layer laminated in an upper-lower direction, wherein: the printed wiring board is formed with one or more vias; the printed wiring board has a front end and a rear end in a front-rear direction perpendicular to the upper-lower direction; the insulating layer is provided between the pattern layer and the ground layer; the ground layer is formed with a ground pattern; the pattern layer is formed with one common ground plane, two or more pads, two or more connection portions, and two or more coupling patterns; the pads are arranged in a lateral direction perpendicular to both the upper-lower direction and the front-rear direction; each of the pads is positioned at a position which is nearer to the front end than to the rear end in the front-rear direction; the common ground plane is a unitary conductive pattern entirely located forward of the pads in the front-rear direction; the vias include a first via that connects the common ground plane and the ground pattern with each other; the pads include one or more ground pads and one or more signal pads; the ground pads are connected with the common ground plane; the signal pads are unconnected with the common ground plane; the connection portions correspond to the pads, respectively; the coupling patterns couple the pads with the connection portions, respectively; the coupling patterns include a ground coupling pattern that is connected to the ground pad; the common ground plane has a middle point in the front-rear direction; the first via is located forward of the middle point; the common ground plane has a front edge and a rear edge each of which is located forward of the pads and extends along the lateral direction; and a first distance between the middle point and the front edge in the front-rear direction is equal to a second distance between the middle point and the rear edge in the front-rear direction.