公开(公告)号：US11909363B2

公开(公告)日：2024-02-20

申请号：US17276561

申请日：2019-09-18

Applicant: PRODRIVE TECHNOLOGIES INNOVATION SERVICES B.V.

Inventor： Bart Gerardus Maria Van Ark

IPC: H03F3/187 ,  H03F3/24 ,  G01R33/36 ,  H01F19/04 ,  H01P5/10 ,  H03F3/195

CPC classification number: H03F3/245 ,  G01R33/3614 ,  H01F19/04 ,  H01P5/10 ,  H03F3/195 ,  H03F2200/06 ,  H03F2200/451 ,  H03F2200/537

Abstract: A radiofrequency power amplifier includes a balun transformer and a plurality of power transistor pairs arranged in a push-pull configuration. The balun transformer has an unbalanced coil extending between a first single-ended signal terminal and a first reference, and a balanced coil extending between a first balanced signal terminal and a second balanced signal terminal. The balun transformer also includes an auxiliary coil electrically isolated from the unbalanced coil and the balanced coil. The auxiliary coil is inductively coupled to the unbalanced coil and extends between a third balanced signal terminal and a fourth balanced signal terminal forming a balanced combiner-divider. An output of a first one of the power transistor pairs is coupled to the first and second balanced signal terminals and an output of a second one of the power transistor pairs is coupled to the third and fourth balanced signal terminals.