Patent ID: 8076590
Filing Date: 2011-12-13
Classification: H05K

Abstract:
1. A printed circuit board (PCB), comprising: a first signal via; a second signal via; a first ground via; a second ground via; a first differential trace comprising a first segment and a second segment; and a second differential trace comprising a third segment and a fourth segment; wherein a distance between the first ground via and the first signal via is substantially equal to a distance between the first ground via and the second signal via; a distance between the second ground via and the first signal via is substantially equal to a distance between the second ground via and the second signal via; the first ground via and the second ground via each comprises an upper cap positioned on a top layer of the PCB, and a lower cap positioned on a bottom layer of the PCB; the upper cap of the first ground via is positioned between the first and third segments; and the lower cap of the second ground via is positioned between the second and fourth segments.