Patent ID: 8256111
Filing Date: 2012-09-04
Classification: H01L,H05K,Y10T

Abstract:
1. A method for laying out a circuit board, comprising: forming a substrate board with a plurality of board sides; providing a ground plane, below the substrate board, comprising of a plurality of ground trace tiles connected in an array and defined on the ground plane, each ground trace tile defined by a plurality of ground traces; a signal plane on the substrate board having a plurality of signal traces that comprise of a plurality of straight line segments arranged on the substrate board; arranging any one ground trace of each tile at an angle other than zero degrees relative to one determined board side; applying the straight line segments mapped on the ground plane crossing one of the plurality of ground traces within an angle range determined by the ground traces of the tile and an adjacent diagonal line of the tile, so as to minimize interaction between the ground traces and the signal traces and reduce impedance differences of the signal traces; and applying one of the plurality of ground trace tiles and the straight line segments of the signal traces at an angle movable in a range from 22.5° to 32.5°.