Patent ID: 7078784
Filing Date: 2006-07-18
Classification: H01F,H01L

Abstract:
1. An integrated circuit comprising: a low resistivity, semiconductor substrate with a planar surface, the substrate including a dielectric region having a portion defined in and extending parallel with the planar surface; an elongated trench formed in the dielectric region and including side-walls defined by a composite dielectric material, the composite dielectric material including a first dielectric material with a first dielectric constant and a second dielectric material with a second dielectric constant lower than the first dielectric constant and the first dielectric material and the second dielectric material intermixed to form an effective dielectric constant lower than the first dielectric constant, the elongated trench extending parallel with the planar surface of the semiconductor substrate a distance defining at least one inductor of an inductive device; conductive material positioned in the trench and forming the at least one inductor of the inductive device; and a conductive trace on the planar surface electrically connecting the at least one inductor of the inductive device to external circuitry.