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US 11,309,119 B2Granted
On-chip balun transformer
AssigneeAiroha Technology Corp.
InventorsKuo-Yu Tseng, Shih-Chieh Chien
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Abstract
An on-chip balun transformer including a primary winding and a secondary winding is provided. The primary winding includes at least one parallel coil and a plurality of first serial semi-turn coils connected to the at least one parallel coil. The secondary winding, magnetically coupled to the primary winding, includes a plurality of second serial semi-turn coils connected to each other. At least one of the second serial semi-turn coils is located within the at least one parallel coil. The primary winding and the secondary winding are coplanar.
Claims5
An on-chip balun transformer, comprising:
- a primary winding, wherein the primary winding is an asymmetrical winding inductor and comprises at least one parallel-connected coil and a plurality of first serial semi-turn coils connected to the at least one parallel-connected coil through a plurality of first metal bridges;
- a secondary winding magnetically coupled to the primary winding, wherein the secondary winding is a symmetrical winding inductor and comprises a plurality of second serial semi-turn coils connected to each other through a plurality of second metal bridges, wherein only a part of the second metal bridges is intersected with the first metal bridges;
- wherein, at least one of the second serial semi-turn coils is located within the at least one parallel-connected coil;
- the primary winding and the secondary winding are coplanar.
1 more element
Dependencies are inferred from the claim text.