Patent ID: 6809623
Filing Date: 2004-10-26
Classification: H01F,H01L,Y10T

Abstract:
A high-Q on-chip inductor comprises:primary winding including a first node and a second node, wherein the primary winding has a first admittance; and auxiliary winding including a first node and a second node, wherein the auxiliary winding has a second admittance, wherein the second node of the primary winding is coupled to the second node of the auxiliary winding, wherein the second admittance is greater than the first admittance, wherein the first node of the primary winding is operably coupled to receive a first leg of an input, wherein the second node of the primary winding is coupled to receive a second leg of the input, and wherein the first node of the auxiliary winding is coupled to receive a proportionally opposite representation of the first leg of the input such that the first admittance is effectively decreased at operating frequencies thereby increasing a quality factor of the primary winding.