Radio frequency power amplifier circuit and method
    1.
    发明授权
    Radio frequency power amplifier circuit and method 有权
    射频功率放大器电路及方法

    公开(公告)号:US07342445B2

    公开(公告)日:2008-03-11

    申请号:US11420831

    申请日:2006-05-30

    IPC分类号: H03G3/20

    摘要: A method (200) and radio frequency amplifier circuit (100) for adjusting a gain setting of a power amplifier (102) and a gain setting of a power amplifier driver (106) that form part of the radio frequency amplifier circuit (100). The method (200) includes selecting (220) a power output value for the power amplifier and an associated constant envelope modulated radio frequency signal supplied by the power amplifier driver (106) to the power amplifier (102) and then sensing variations (240) in a power output value of the power amplifier (102). Next there is performed adjusting (250) both the gain setting of the power amplifier (102) and adjusting the gain setting of the power amplifier driver (106) in response to the sensing so that the constant envelope modulated signal is within a linear operating region of the power amplifier (102). The gain settings of the power amplifier (102) and power amplifier driver (106) are concurrently adjusted until the power output value for the power amplifier is achieved.

    摘要翻译: 一种用于调整功率放大器(102)的增益设置的方法(200)和射频放大器电路(100)以及形成射频放大器电路(100)的一部分的功率放大器驱动器(106)的增益设置。 方法(200)包括将功率放大器的功率输出值和由功率放大器驱动器(106)提供的相关联的恒定包络调制射频信号选择(220)到功率放大器(102),然后感测变化(240) 在功率放大器(102)的功率输出值中。 接下来,响应于感测,执行功率放大器(102)的增益设置和调整功率放大器驱动器(106)的增益设置两者的调整(250),使得恒定包络线调制信号在线性操作区域内 的功率放大器(102)。 同时调整功率放大器(102)和功率放大器驱动器(106)的增益设置,直到达到功率放大器的功率输出值。