High Q on-chip inductor and method of manufacture thereof
AssigneeBroadcom Corporation
InventorsSissy Kyriazidou, Harry Contopanagos, Reza Rofougaran
Life of this patent
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Abstract
A high Q on-chip inductor includes a primary winding and an auxiliary winding that is coupled to receive a proportionally opposite representation of an input of the primary winding. Further, the auxiliary winding has an admittance that is greater than the admittance of the primary winding thereby yielding an asymmetry in the admittances. As such, a push/pull mechanism is obtained in a 2-port system (e.g., 1st and 2nd nodes of the primary winding) that produces a large Q factor for an on-chip inductor.
Claims30
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.
A high-Q on-chip inductor comprises:
- primary winding including a first node and a second node;
- and
- auxiliary winding operably coupled to increase a quality factor of the primary winding.
A method for manufacturing a high-Q on-chip inductor comprises:
- creating a primary winding to include a first node and a second node, wherein the primary winding has a first admittance;
- and
- creating an auxiliary winding to include 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.
A method for manufacturing a high-Q on-chip inductor comprises:
- creating a primary winding to include a first node and a second node;
- and
- creating an auxiliary winding operably coupled to increase a quality factor of the primary winding.
Dependencies are inferred from the claim text.