Patent ID: 7893770

Claim:
A power amplification device, comprising: a DC power supply that outputs a first drain voltage; a Doherty amplifier including a carrier amplifier and a peak amplifier, which are connected in parallel, and amplifies an RF signal; a voltage control circuit that outputs a first instruction to output a low voltage when an output power is equal to or lower than a given value, and outputs a second instruction to output a high voltage when the output power is larger than the given value; and a voltage converter circuit that applies a second drain voltage obtained by subjecting the first drain voltage to voltage conversion, or the first drain voltage to drain terminals of the carrier amplifier and the peak amplifier according to the first instruction, and applies the first drain voltage or the second drain voltage obtained by subjecting the first drain voltage to voltage conversion to the drain terminals of the carrier amplifier and the peak amplifier according to the second instruction.