Patent ID: 8253523
Filing Date: 2012-08-28
Classification: H01F

Abstract:
1. A spiral inductor device, comprising: an insulating layer disposed on a substrate; a first spiral conductive trace with multiple turns disposed on the insulating layer, wherein the outermost turn and the innermost turn of the first spiral conductive trace have a first end and a second end, respectively, and the second end is connected to ground; a second spiral conductive trace with multiple turns disposed on the insulating layer and adjacent to the first spiral conductive trace, wherein the outermost turn and the innermost turn of the second spiral conductive trace have a third end and a fourth end, respectively, and the fourth end is connected to ground; and a first non-continuous spiral conductive trace with a single turn disposed on the insulating layer, parallel and adjacent to the outermost turn of the first spiral conductive trace, wherein the first non-continuous spiral conductive trace is connected to the ground and at least a portion of the first non-continuous spiral conductive trace is disposed between the first spiral conductive trace and the second spiral conductive trace.