Patent ID: 7235457

Claim:
A method for forming transmission lines in an integrated circuit, comprising: forming a first layer of electrically conductive material on a substrate; forming a first layer of insulating material on the first layer of the electrically conductive material; forming a pair of layered high permeability shielding lines on the first layer of insulating material, wherein the pair of layered high permeability shielding lines include alternating layers of a high permeability metal, formed of permalloy and magnetic conductive films, and a low resistive conductive material; forming a transmission line on the first layer of insulating material and between and parallel with the pair of layered high permeability shielding lines; forming a second layer of insulating material on the transmission line and the pair of layered high permeability shielding lines; and forming a second layer of electrically conductive material on the second layer of insulating material.