| 摘要 |
<p>Embodiments of the present invention provide a multi layered printed circuit board, PCB, with via holes connecting different signal layers of the PCB. The via holes are connected to pads in the signal layers and are surrounded by anti-pads in the ground layers. In accordance with further embodiments of the invention the pads have a shape wherein a first path, stretching from the center of the pad and substantially in a direction in which adjacent routing channels extend, to a first point located on the edge of the pad, is longer than a second path, stretching from the center of the pad and substantially in a direction towards the adjacent routing channels to a second point located on the edge of the pad.</p> |
