Power amplifier and amplification method thereof

摘要

Provided are a power amplifier and a method thereof. The power amplifier power amplifier includes: a main amplifying unit receiving power; an auxiliary amplifying unit connected in parallel to the main amplifying unit; and a Balun transformer combined with the main amplifying unit and the auxiliary amplifying unit. Respectively different bias voltages are applied to the main amplifying unit and the auxiliary amplifying unit.

主权项

1. A power amplifier comprising:
a main amplifying unit receiving power; an auxiliary amplifying unit connected in parallel to the main amplifying unit; and a Balun transformer connected to the main amplifying unit and the auxiliary amplifying unit, and configured to generate output voltages by transforming outputs of the main amplifying unit and the auxiliary amplifying unit, respectively, and combine the output voltages to deliver a sum of the output voltages to a load impedance, wherein different bias voltages are applied to the main amplifying unit and the auxiliary amplifying unit, respectively, to maintain different bias conditions in the main amplifying unit and the auxiliary amplifying unit during operation of the power amplifier, and wherein the main amplifying unit comprises a first main amplifier and a second main amplifier and different bias voltages are inputted to the first main amplifier and the second main amplifier.