POWER AMPLIFIER

摘要

The disclosed power amplifier has: a first amplifying unit and a second amplifying unit provided with a plurality of amplifying circuits connected in parallel in which a bias voltage can be adjusted in accordance with a control signal supplied from outside, the first amplifying unit and the second amplifying unit for amplifying an input signal by each amplifying circuit and combining and outputting the amplified signal; a divider for dividing the input signal to the first amplifying unit and the second amplifying unit; and a combiner for combining and outputting an output signal of the first amplifying unit and an output signal of the second amplifying unit.

主权项

1. A power amplifier comprising:
a first amplifying unit and a second amplifying unit that each comprises a plurality of amplifying circuits connected in parallel wherein a bias voltage is adjustable in accordance with a control signal supplied from outside, amplifies an input signal using the plurality of amplifying circuits, combines the amplified signals, and outputs the combined signal; a divider that divides an input signal to the first amplifying unit and the second amplifying unit; and a combiner that combines an output signal of the first amplifying unit and an output signal of the second amplifying unit and outputs the combined signal, wherein each of the plurality of amplifying circuits included in the first amplifying unit is biased so as to operate in AB-class or B-class mode, each of the plurality of amplifying circuits included in the second amplifying unit is biased so as to operate in C-class mode, and the combiner combines the output signal of the first amplifying unit and the output signal of the second amplifying unit to cause the first amplifying unit and the second amplifying unit to operate as a Doherty amplifier.