Patent ID: 7323948

Claim:
A structure, comprising: a set of wiring levels on top of a semiconductor substrate, each wiring level of said set of wiring levels comprising copper wires in a respective dielectric layer, top surfaces of said copper wires coplanar with top surfaces of said respective dielectric layers, said wiring levels stacked on top of each other from a lowest wiring level nearest said substrate to a highest wiring level furthest from said substrate; an inductor comprised of copper in said highest wiring level, said inductor confined within a perimeter of a region of said highest wiring level, a top surface of said inductor coplanar with a top surface of a dielectric layer comprising said highest wiring level; an electric shield comprised of a magnetic material in said lowest wiring level of said set of wiring levels, a top surface of said electric shield coplanar with a top surface of a dielectric layer comprising said lowest wiring level; a p-n junction varactor formed in said substrate and isolated by shallow trench isolation formed in said substrate, said varactor aligned completely under said perimeter of said region of said highest wiring level; an additional electric shield comprised of said magnetic material in a next-to-lowest wiring level of said set of wiring levels between said highest wiring level and immediately adjacent to said wiring level containing said electric shield, a top surface of said additional electric shield coplanar with a top surface of a dielectric layer comprising said next-to-lowest wiring level; at least one additional wiring level of said set of wiring levels disposed between said highest wiring level and said next to lowest wiring level; an integrated circuit, at least one semiconductor device of said integrated circuit formed in said substrate and aligned under said perimeter of said region of said highest wiring level, at least one wire in each wiring level of said set of wiring levels electrically connected to said integrated circuit; wherein said electric shield comprises a set of electrically conductive and spaced apart parallel bars; wherein said additional electric shield comprises a set of electrically conductive and spaced apart parallel bars; and wherein said bars of said set of electrically conductive parallel bars of said additional electric shield are orientated perpendicular to said bars of said set of electrically conductive parallel bars of said electric shield.