Patent ID: 6486017
Filing Date: 2002-11-26
Classification: H01F,H01L

Abstract:
A method of reducing substrate coupling for an inductor created over the surface of a high resistivity substrate, comprising the steps of:providing a substrate; depositing a first layer of dielectric over the surface of said substrate; patterning and etching said first layer of dielectric, creating openings through said first layer of dielectric, further creating a pattern of first dielectric overlying said substrate and being aligned with coils of a thereover to be created inductor; filling said openings created through said first layer of dielectric with epitaxial silicon; depositing a second layer of dielectric over the surface of said pattern of first dielectric, thereby including the surface of said filling of epitaxial silicon; depositing a third layer of dielectric over the surface of said second layer of dielectric; and creating a horizontal spiral inductor over the surface of said third layer of dielectric.