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    • 25. 发明授权
    • Radio communication apparatus and radio frequency power amplifier
    • 无线电通信装置和射频功率放大器
    • US06172567B2
    • 2001-01-09
    • US09385690
    • 1999-08-30
    • Hirotaka UenoYasuhiro NunogawaTetsuaki Adachi
    • Hirotaka UenoYasuhiro NunogawaTetsuaki Adachi
    • H03G330
    • H03G3/3042H03G1/0088H03G3/3047
    • To reduce power consumption by increasing amplifying efficiency in a low power mode, there is provided a radio communication apparatus in which each of field effect transistors of a radio frequency power module in a multi-stage configuration is controlled by an APC circuit based on a power level instruction signal, and in which a correction circuit is incorporated between the gate of a final stage transistor and the APC circuit to apply a linear gate voltage to the final stage transistor when a High level signal based on the power level instruction signal is applied and to provide a maximum gate voltage of the final stage transistor which is equal to or lower than the gate voltages of other transistors and whose rate of increase relative to the output voltage of the APC circuit gradually reduces when a Low level signal based on the power instruction signal is applied. A high power mode is enabled when the output voltage of the APC circuit is equal to or higher than a prescribed voltage, and a low power mode is enabled when it is lower than the prescribed voltage.
    • 为了通过提高低功率模式的放大效率来降低功耗,提供了一种无线电通信装置,其中多级配置中的射频功率模块的场效应晶体管中的每一个基于功率由APC电路控制 并且其中在最后级晶体管的栅极和APC电路之间并入校正电路,以在施加基于功率电平指令信号的高电平信号时将线性栅极电压施加到最终级晶体管;以及 以提供等于或低于其他晶体管的栅极电压的最终栅极电压,并且当基于功率指令的低电平信号时,其相对于APC电路的输出电压的增加速率逐渐降低 信号被施加。 当APC电路的输出电压等于或高于规定电压时,使能高功率模式,低功耗模式在低于规定电压时使能。