Structures of planar transformer and balanced-to-unbalanced transformer
AssigneeRealtek Semiconductor Corp.
InventorHsiao-Tsung YEN
Life of this patent
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Abstract
The present invention discloses structures of a planar transformer and a balanced-to-unbalanced transformer. The structure of the planar transformer includes a first planar coil, a second planar coil and a third planar coil. The first planar coil has a first ring structure, a second ring structure, and a connecting section. The first ring structure and the second ring structure are connected by the connecting section. A range of the second planar coil and a range of the first ring structure at least partially overlap. A range of the third planar coil and a range of the second ring structure at least partially overlap. A transformer is constituted by the first planar coil and the second planar coil or by the first planar coil and the third planar coil.
Claims20
A planar transformer structure comprising:
- a first planar coil comprising a first ring structure, a second ring structure and a connecting section, wherein the connecting section connects the first ring structure and the second ring structure;
- a second planar coil, a range of which partially or entirely overlaps a range of the first ring structure;
- and
- a third planar coil, a range of which partially or entirely overlaps a range of the second ring structure;
- wherein, a transformer is constituted by the first planar coil and the second planar coil or by the first planar coil and the third planar coil.
A BALUN structure comprising:
- a first planar coil comprising a first ring structure, a second ring structure and a connecting section, wherein the connecting section connects the first ring structure and the second ring structure;
- a second planar coil, a range of which partially or entirely overlaps a range of the first ring structure and comprising a first node and a second node;
- a third planar coil, a range of which partially or entirely overlaps a range of the second ring structure and comprising a third node and a fourth node;
- wherein, the first node is connected to the third node and the second node is connected to the fourth node.
Dependencies are inferred from the claim text.