公开(公告)号：US11309119B2

公开(公告)日：2022-04-19

申请号：US16034680

申请日：2018-07-13

申请人： Airoha Technology Corp.

发明人： Kuo-Yu Tseng ,  Shih-Chieh Chien

IPC分类号： H01F27/28 ,  H03H7/42 ,  H03H1/00 ,  H01L23/64 ,  H01F21/12

摘要： 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.