A power amplification device includes: a DC power source for outputting a drain voltage; a Doherty amplifier which has a carrier amplifier and a peak amplifier connected in parallel and amplifies an RF signal; a voltage control circuit which outputs a first instruction so as to output a low voltage when the output power is below a predetermined value and a second instruction so as to output a high voltage when the output power is above the predetermined value; and a voltage conversion circuit which converts the drain voltage to a lower voltage and applies it to drain terminals of a carrier amplifier and a peak amplifier according to the first instruction and applies the drain voltage directly to the drain terminals of the carrier amplifier and the peak amplifier according to the second instruction.
申请公布号
WO2008075561(A1)
申请公布日期
2008.06.26
申请号
WO2007JP73504
申请日期
2007.12.05
申请人
MITSUBISHI ELECTRIC CORPORATION;YAMAUCHI, KAZUHISA;SAKAI, YUJI;FUJISAKI, KOICHI;INOUE, AKIRA