Patent ID: 7068119

Claim:
A system to obtain a fixed impedance in a differential copper pair, comprising: a first copper conductor extended along an axis; a second copper conductor positioned substantially parallel along the axis, wherein the second copper conductor is spaced approximately 5 millimeters from the first copper conductor; and an insulating casing encompassing the first copper conductor and the second copper conductor, wherein the insulating casing includes two substantially parallel side-ground-planes and two substantially parallel vertical-ground-planes, wherein the two side-ground-planes are each at least 0.015 inches thick and the two vertical-ground-planes are each at least 0.007 inches thick, the side-ground-planes and the vertical-ground-planes respectfully connect to encompass the first and second copper conductors, each of the side-ground-planes includes a pair of vias for connecting the two vertical-ground-planes, wherein the vias in each pair of vias are less than 0.1 inches apart.