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US 4,441,088 AGranted
Stripline cable with reduced crosstalk
AssigneeInternational Business Machines Corporation
InventorCarl J. Anderson
Life of this patent
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AssigneeInternational Business Machines Corporation
InventorCarl J. Anderson
Estimating the term…
A transmission line having substantially reduced far-end forward wave crosstalk is characterized by a single layer of dielectric material having a thickness chosen to provide a forward wave coupling constant K.sub.F substantially equal to zero. The dielectric layer is located on a ground plane, and has a plurality of signal carrying conductors embedded in it. The thickness H of the dielectric underlayer below the signal carrying conductors is chosen to provide a transmission line having the selected values of impedance, etc. and substantially reduced forward wave crosstalk. The thickness t of the dielectric overlayer above the signal carrying conductors is chosen (for the selected value of thickness H of the dielectric underlayer) at the finite value critical thickness at which forward wave mutual capacitance and forward wave mutual inductance cancel to a null. The ground plane and the signal carrying conductors can be superconductors.
A transmission line for carrying high speed signals with substantially reduced forward wave crosstalk, consisting essentially of a ground plane layer comprised of a plane of electrically conductive material;
A transmission line made up of a ground plane, a dielectric underlayer arrayed on such ground plane, a number of conductors arrayed on such dielectric underlayer in a conductor layer substantially parallel to such ground plane, and a dielectric overlayer arrayed on such conductors characterized by
A microstrip superconducting transmission line structure comprising
Dependencies are inferred from the claim text.