Patent ID: 11909363
Assignee: PRODRIVE TECHNOLOGIES INNOVATION SERVICES B.V.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A radiofrequency power amplifier, comprising:
a first balun transformer and a plurality of power transistor pairs, each of the plurality of power transistor pairs arranged in a push-pull configuration;
wherein the first balun transformer comprises an unbalanced coil extending between a first single-ended signal terminal and a first reference port and a balanced coil extending between a first balanced signal terminal and a second balanced signal terminal;
wherein the unbalanced coil and the balanced coil are inductively coupled and electrically isolated from each other;
wherein the first balun transformer further comprises at least one auxiliary coil electrically isolated from the unbalanced coil and the balanced coil;
wherein the at least one 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;
wherein an output of a first one of the plurality of power transistor pairs is coupled to the first and second balanced signal terminals; and
wherein an output of a second one of the plurality of power transistor pairs is coupled to the third and fourth balanced signal terminals.