Patent ID: 7728428

Claim:
A multilayer PCB, comprising: a plurality of signal layers; a ground layer and a power layer disposed between the plurality of signal layers; a signal via extending through the plurality of signal layers to allow a signal current to flow therethrough; and at least one stitching capacitor provided in one of the plurality of signal layers to allow a return current that corresponds to the signal current to flow between the power layer and the ground layer, the at least one stitching capacitor having a length that is equal to a distance between the at least one stitching capacitor and the signal via, the length of the at least one stitching capacitor being perpendicular to the distance between the at least one stitching capacitor and the signal via, wherein the at least one stitching capacitor includes a ground via electrically connected to the ground layer and a power via electrically connected to the power layer, and the at least one stitching capacitor is disposed such that the power via is arranged in a position that overlaps a path of the signal current flowing on another signal layer that is electrically connected to the signal layer having the at least one stitching capacitor provided therein.