RF power amplifier
    1.
    发明授权
    RF power amplifier 失效
    射频功率放大器

    公开(公告)号:US07154339B2

    公开(公告)日:2006-12-26

    申请号:US10514900

    申请日:2003-05-19

    CPC classification number: H03F3/19 H03F3/211

    Abstract: An RF power amplifier according to the invention comprises a plurality of parallel output transistors (HBT,1,1 to HBT,1,N) connected to a power supply. A plurality of base resistors (Rb,1,1 to Rb,1,N) for the output transistors (HBT,1,1 to HBT,1,N) and a plurality of input capacitors (Cb,1 to Cb,N), each coupled in parallel to receive an RF signal input and connected via at least one additional passive component to the inputs of each corresponding output transistor (HBT,1,1 to HBT,1,N), are provided An output for an RF output signal is obtained from the parallel connection of the output transistors (HBT,1,1 to HBT,1,N). The transistors (HBT,1,1 to HBT,1,N) are heterojunction bipolar transistors.

    Abstract translation: 根据本发明的RF功率放大器包括连接到电源的多个并联输出晶体管(HBT,1,1至HBT,1,N)。 用于输出晶体管(HBT,1,1至HBT,1,N)和多个输入电容器(Cb,1至Cb,N)的多个基本电阻器(Rb,1,1至Rb,1,N) ,每个并联耦合以接收经由至少一个附加无源分量输入并连接到每个对应的输出晶体管(HBT,1,1至HBT,1,N)的输入的RF信号。RF输出的输出 信号从输出晶体管(HBT,1,1至HBT,1,N)的并联连接获得。 晶体管(HBT,1,1至HBT,1,N)是异质结双极晶体管。

    Peak Voltage Protection Circuit and Method
    4.
    发明申请
    Peak Voltage Protection Circuit and Method 审中-公开
    峰值电压保护电路及方法

    公开(公告)号:US20080239597A1

    公开(公告)日:2008-10-02

    申请号:US11575727

    申请日:2005-09-14

    CPC classification number: H03F1/52 H03F2200/435 H03F2200/471

    Abstract: A peak voltage protection circuit for protecting an associated High Voltage NPN transistor (T3) against breakdown, the protection circuit comprising a Low Voltage NPN element (T15) for sensing a sensor voltage related to a base-collector voltage of the associated High Voltage NPN transistor (T3). The circuit further comprises an activation circuit for limiting the base-collector voltage of the associated High Voltage NPN transistor (T3) upon triggering. The Low Voltage NPN element (15) is coupled to the activation circuit for triggering it upon the sensor voltage exceeding a breakdown voltage of the Low Voltage NPN transistor (T15).

    Abstract translation: 一种用于保护相关联的高电压NPN晶体管(T 3)免于击穿的峰值电压保护电路,所述保护电路包括用于感测与相关联的高电压的基极 - 集电极电压相关的传感器电压的低电压NPN元件(T 15) NPN晶体管(T 3)。 电路还包括用于在触发时限制相关联的高电压NPN晶体管(T 3)的基极 - 集电极电压的激活电路。 低电压NPN元件(15)耦合到激活电路,以在传感器电压超过低电压NPN晶体管(T15)的击穿电压时触发它。

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