Patent ID: 7705246
Filing Date: 2010-04-27
Classification: H05K

Abstract:
1. A differential signal via structure for a printed circuit board, comprising: a pair of signal vias disposed in a common signal via plane extending vertically from a surface of the printed circuit board to an interior region of the printed circuit board to contact signal conductors disposed horizontally within the interior region of the printed circuit board; a pair of ground vias disposed in a common via plane extending vertically from a surface of the printed circuit board to an interior region of the printed circuit board to contact ground conductors disposed horizontally within the interior region of the printed circuit board; wherein the signal via plane intersects the ground via plane; and wherein at the surface of the printed circuit board, the distance from a first one of the pair of signal vias to a first one of the pair of ground vias is equal to the distance from said first one of the pair of signal vias to a second one of the pair of ground vias.