Patent ID: 6870457
Filing Date: 2005-03-22
Classification: H01F,H01L

Abstract:
1. A symmetrically stacked inductor having at least one winding, comprising: a plurality of conductive layers, each conductive layer including at least a pair of conductive lines defining a pair of respective portions of geometrically shaped turns of said at least one winding disposed on opposing first and second longitudinally displaced sides thereof, said portions of said turns on each said conductive layer being symmetric with respect to their position on said winding, at least a first of said plurality of conductive layers having a pair of ports formed thereon and respectively coupled to opposing ends of said at least one winding; an inter-metal dielectric layer disposed between each adjacent pair of said plurality of conductive layers for electrically isolating said adjacent conductive layers; and a plurality of via plugs formed in each inter-metal dielectric for layer, each via plug providing electrical connection of a conductive line on said first side of one conductive layer to a conductive line on said second side of an adjacent conductive layer.