Patent ID: 7432774
Filing Date: 2008-10-07
Classification: H01P,H05K,Y10T

Abstract:
1. A printed circuit board, comprising: a substrate having a dielectric constant different from the dielectric constant of free space; at least two microstrip lines routed adjacent to one another on a surface of the substrate, each microstrip separated from a ground plane of the printed circuit board by the substrate; and a dielectric coating applied to at least one of the at least two microstrip lines such that the dielectric constant of the dielectric coating differs from the dielectric constant of free space, and such that the dielectric coating is applied to the at least one microstrip line in a thickness at least half the thickness of the substrate separating the micro strip line from the ground plane, wherein the dielectric coating comprises a coating material applied over the at least one micro strip line in a thickness greater than a thickness of the coating material in at least one other area of the substrate having the coating material applied thereto.