Patent ID: 11876113
Assignee: REALTEK SEMICONDUCTOR CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An integrated transformer comprising:
a first inductor substantially implemented in a first metal layer of a semiconductor structure and comprising a first winding and a second winding, wherein the first winding has a first outer turn and a first inner turn, and the second winding has a second outer turn and a second inner turn;
a second inductor substantially implemented in a second metal layer of the semiconductor structure and comprising a third winding and a fourth winding, wherein the third winding has a third outer turn and a third inner turn, and the fourth winding has a fourth outer turn and a fourth inner turn; and
wherein the first outer turn and the third outer turn substantially overlap, the second outer turn and the fourth outer turn substantially overlap, the first outer turn and the second outer turn are connected through a first segment and a second segment crossing each other, the third outer turn and the fourth outer turn are connected through a third segment and a fourth segment crossing each other, the first segment and the third segment are in the first metal layer, the second segment and the fourth segment are in the second metal layer, and the first metal layer is different from the second metal layer; and
wherein the first outer turn and the third outer turn substantially overlap in a direction perpendicular to the first metal layer or the second metal layer, and the second outer turn and the fourth outer turn substantially overlap in the direction perpendicular to the first metal layer or the second metal layer.