Patent ID: 7271472

Claim:
A circuit board, comprising: a dielectric layer; a net of first power supply lines for providing a first reference voltage plane; and a net of second power supply lines for providing a second reference voltage plane; wherein the nets of first and second power supply lines are arranged such that first power supply lines and second power supply lines are alternately arranged in the direction of a first surface of the dielectric layer; wherein the nets of first and second power supply lines are arranged in an interwoven configuration on the first surface of the dielectric layer; wherein the first and second power supply lines comprise power supply lines extending in a first direction and power supply lines extending in a second direction, wherein a power supply line extending in the first direction is formed to be arranged above a first one of the power supply lines extending in the second direction and below a second one of the power supply lines extending in the second direction; the circuit board further comprising a first signal trace being arranged on a second surface of the dielectric layer, wherein the second surface is opposite to the first surface of the dielectric layer, wherein a return current from a signal on the first signal trace propagates on the first reference voltage plane.