Patent ID: 8304659
Filing Date: 2012-11-06
Classification: H01P,H05K,Y10T

Abstract:
1. A circuit board comprising: a first conductive trace layer comprising a plurality of conductive differential traces, including a subset of the plurality of conductive differential traces, the subset having conductive differential traces having at least one lengthwise channel that increases the cross sectional perimeter of the conductive differential trace such that the resistivity of the conductive differential trace is reduced for signal frequency components above 6 Ghz relative to the conductive differential traces without the at least one lengthwise channel; a first dielectric layer underlying the first conductive trace layer; and a second dielectric layer overlying the first conductive trace layer, the second dielectric layer comprises a resin-impregnated woven fiber dielectric material, and wherein the at least one lengthwise channel in the conductive differential traces of the subset is substantially filled with only the resin component of the resin-impregnated woven fiber dielectric material.