Bias control circuit for power amplifier
    86.
    发明授权
    Bias control circuit for power amplifier 失效
    功率放大器偏置控制电路

    公开(公告)号:US06744321B2

    公开(公告)日:2004-06-01

    申请号:US10387062

    申请日:2003-03-11

    IPC分类号: H03F304

    摘要: A bias control circuit for a power amplifier including an RF amplifier having a transistor for power amplification, comprises two components. A first component is a bias circuit having an active bias transistor operating in an active mode and connected to a predetermined Vref pin to provide the transistor for power amplification with a base current and a second component is a bias current control circuit having another active bias transistor connected to a predetermined Vcon pin and turned on or off depending on a high or a low mode of the Vcon pin to thereby control a base current and a quiescent current of the transistor for power amplification.

    摘要翻译: 一种用于功率放大器的偏置控制电路,包括具有用于功率放大的晶体管的RF放大器,包括两个部件。 第一分量是偏置电路,其具有以有源模式工作的有源偏置晶体管,并连接到预定的Vref引脚,以提供具有基极电流的功率放大的晶体管,而第二分量是具有另一有源偏置晶体管的偏置电流控制电路 连接到预定的Vcon引脚,并根据Vcon引脚的高或低模式导通或截止,从而控制用于功率放大的晶体管的基极电流和静态电流。