Patent ID: 6392160
Filing Date: 2002-05-21
Classification: H05K

Abstract:
A multi-layer backplane comprisingalternating layers of conductive traces for radio frequency signals and ground plane layers of conductive material electrically insulated from each other by a layer of insulating material; an upper layer having at least one connector with a center pin extending into the backplane to make electrical contact with a trace of a selected trace layer below said upper layer; a ground plane cap layer of electrically conductive material extending over the outer surface of a lowermost layer of insulating material below the last ground plane layer, said ground place cap layer being beneath said center pin for preventing leakage of radio frequency energy from said connector; and a plated through-hole of electrically conductive material into which the center pin of a said connector is inserted, the electrically conductive material of said through-hole being absent from the lowermost ground plane layer of the backplane to a point somewhat below the terminal end of the said center pin to effect the impedance of said connector.