Patent ID: 6602078
Filing Date: 2003-08-05
Classification: H01P,H05K

Abstract:
An electrical interconnect comprising:circuit board structure having multiple layers each including a substrate and a wiring pattern extending along at least one surface of the substrate, and the circuit board structure having a first transmission line constituted by the wiring pattern extending along a surface of one of said layers, and a second transmission line constituted by the wiring pattern extending along a surface of another of said layers; a signal line extending from said first transmission line to said second transmission line in a vertical direction through said circuit board structure so as to form an electrical interconnection of said transmission lines; an electrical ground conductor that is substantially thicker than said wiring patterns and is interposed between respective ones of the layers of the circuit board structure intermediate said layers having the surfaces along which the first and second transmission lines extend, said electrical ground conductor having a through-hole in which said signal line resides as spaced from the ground conductor; and a dielectric medium occupying said through-hole and substantially circumferentially surrounding said signal line, wherein said ground conductor and said dielectric medium form a coaxial structure in the vertical direction.