Patent ID: 7249338
Filing Date: 2007-07-24
Classification: H01P,H05K

Abstract:
1. A method for preparing a printed circuit board to decrease losses associated with a propagation of a high speed signal thereon, the printed circuit board having at least two conductive layers, separated by a dielectric layer formed of a material having a dielectric value, the at least two conductive layers and the dielectric layer being arranged in respective parallel planes, the method comprising: forming at least one conductive path for the propagation of the high speed signal in at least one of the at least two conductive layers; and removing at least one portion of the dielectric layer on both sides of and adjacent to the at least one conductive path, the at least one portion so removed extending in the dielectric layer between the at least two conductive layers from the at least one of the at least two conductive layers to the other of the at least two conductive layers.