Patent ID: 6635949
Filing Date: 2003-10-21
Classification: H01F,H01L

Abstract:
A symmetric inducting device for an integrated circuit comprising:a substrate, the substrate having a working surface and a second surface that is opposite the working surface; a main metal layer, the main metal layer having at least one pair of current path regions, each of the current path region pairs is formed in generally a regular polygonal shape, each current path region pair is generally symmetric about a plane of symmetry that is perpendicular to the working surface of the substrate such that each current path region pair has one current path region on one side of the plane of symmetry and another current path region on the other side of the plane of symmetry; and a shield positioned between the second surface of the substrate and the main metal layer, the shield is patterned into segments, the segments of shield are generally symmetric about the plane of symmetry, medial portions of at least some segments of the shield are formed generally perpendicular to the plane of symmetry as the medial portions cross the plane of symmetry, the shield is more conductive than regions directly adjacent the shield.