Patent ID: 6995629

Claim:
A center-tap termination circuit wired on a printed circuit board, the center-tap termination circuit being provided at the end of a differential signal transmission line having a forward transmission line and a return transmission line, comprising: a first resistor having a resistance of approximately half the differential impedance of the differential signal transmission line, wherein the first resistor is arranged outside the forward transmission line and the return transmission line and adjacent to the forward transmission line, and one end of the first resistor is electrically connected to the forward transmission line; a second resistor having a resistance of approximately half the differential impedance of the differential signal transmission line, wherein the second resistor is arranged outside the forward transmission line and the return transmission line and adjacent to the return transmission line, and one end of the second resistor is electrically connected to the return transmission line; a connector electrically connected to the end of the first resistor not connected to the forward transmission line and to the end of the second resistor not connected to the return transmission line, wherein the connector intersects the forward transmission line and the return transmission line in three-dimensional space; and a first capacitor arranged outside the forward transmission line and the return transmission line, wherein one end of the first capacitor is electrically connected to the connector, and the end of the first capacitor not connected to the connector is connected to a ground of the printed circuit board, wherein the forward transmission line and the return transmission line are substantially equidistant from each other.