Patent ID: 8058956
Filing Date: 2011-11-15
Classification: H01L,H01P,H05K

Abstract:
1. A high frequency and wide band impedance matching via, adapted to a substrate having a top circuit layer, a bottom circuit layer, a first ground layer adjacent to the top circuit layer, and a second ground layer adjacent to the bottom circuit layer, the high frequency and wide band impedance matching via comprising: a first differential signal transmission pair on the bottom circuit layer; a second differential signal transmission pair on the top circuit layer, the first and the second differential signal transmission pair being parallel to a first axis; a plurality of paired signal traces, connected between the first differential signal transmission pair and the second differential signal transmission pair, the plurality of paired signal traces comprising: a plurality of paired ground traces, comprising: wherein the plurality of paired signal vias and the plurality of paired ground vias between two adjacent layers are substantially aligned in a plane perpendicular to the first axis, the offsets along the first axis between the adjacent aligning planes are substantially the same.