Structure for Enhancing Reference Return Current Conduction

摘要

An apparatus is provided that comprises a plurality of signaling planes providing signal pathways and at least one internal reference plane providing either a voltage or a ground connection. The at least one internal reference plane are provided between at least two of the signaling planes. The apparatus further comprises a signal blind/buried via coupling a signal pathway of a first one of the at least two signaling planes with a signal pathway of a second one of the at least two signaling planes. The blind/buried via runs through the at least one internal reference plane. The apparatus also comprises at least one first conductive feature in the first one of the at least two signaling planes. The at least one first conductive feature is in close proximity to the signal blind/buried via and increases the capacitive coupling of currents in the reference planes of the apparatus.