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    • 20. 发明申请
    • POWER AMPLIFICATION DEVICE
    • 功率放大器件
    • US20100079210A1
    • 2010-04-01
    • US12518664
    • 2007-12-05
    • Kazuhisa YamauchiYuji SakaiKoichi FujisakiAkira Inoue
    • Kazuhisa YamauchiYuji SakaiKoichi FujisakiAkira Inoue
    • H03F1/07
    • H03F1/0238H03F1/0244H03F1/0288
    • Provided is a power amplification device including: a DC power supply that outputs a 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 converts the drain voltage to a voltage lower than the drain voltage and applies the converted voltage to drain terminals of the carrier amplifier and the 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.
    • 提供了一种功率放大装置,包括:输出漏极电压的直流电源; 包括并联连接的载波放大器和峰值放大器的Doherty放大器,并放大RF信号; 电压控制电路,当输出功率等于或低于给定值时,输出第一指令以输出低电压,并且当输出功率大于给定值时输出第二指令以输出高电压; 以及电压转换器电路,其将漏极电压转换为低于漏极电压的电压,并根据第一指令将转换的电压施加到载波放大器和峰值放大器的漏极端子,并将漏极电压直接施加到漏极端子 的载波放大器和峰值放大器。