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    • 4. 发明申请
    • BALANCED AMPLIFIER WITH PROTECTION CIRCUIT
    • 带保护电路的平衡放大器
    • WO2009008975A3
    • 2009-03-05
    • PCT/US2008008173
    • 2008-07-01
    • SKYWORKS SOLUTIONS INCWYSE RUSSELL
    • WYSE RUSSELL
    • H03F3/45
    • H03F3/24H03F1/52H03F3/602H03F2200/336
    • According to an exemplary embodiment, a balanced amplifier includes an in-phase amplifier coupled to a first input port of an output coupler and a quadrature amplifier coupled to a second input port of the output coupler. The balanced amplifier further includes an impedance termination coupled to an isolated port of the output coupler. The balanced amplifier further includes a protection circuit coupled to the isolated port of the output coupler and configured to limit an amount of power applied across the impedance termination. The balanced amplifier further includes an input coupler having a first output port coupled to an input of the in-phase amplifier and a second output port coupled to an input of the quadrature amplifier.
    • 根据一个示例性实施例中,平衡放大器包括连接到输出耦合器的第一输入端口和耦合到所述输出耦合器的第二输入端口的正交放大器的同相放大器。 平衡放大器还包括耦合到输出耦合器的隔离端口的阻抗终端。 平衡放大器还包括耦合到输出耦合器的隔离端口的保护电路,并且被配置为限制施加在阻抗端子两端的功率量。 平衡放大器还包括输入耦合器,其具有耦合到同相放大器的输入的第一输出端口和耦合到正交放大器的输入的第二输出端口。
    • 5. 发明申请
    • FAST CHARGE CIRCUIT FOR USE IN AMPLIFIERS
    • 用于放大器的快速充电电路
    • WO2008013615A3
    • 2008-06-12
    • PCT/US2007014110
    • 2007-06-15
    • SKYWORKS SOLUTIONS INCWYSE RUSSELL
    • WYSE RUSSELL
    • H03F1/02H03F1/14
    • H03F1/305H03F1/26H03F2200/294H03F2203/45154
    • According to an exemplary embodiment, an amplification module (200) includes a bias circuit (204) coupled to an input of an amplifier (202), where the bias circuit (204) is configured to charge the input of the amplifier (202) to a final bias voltage. The amplification module (200) further includes a fast charge circuit (210) configured to provide a low impedance path (246) between the bias circuit (204) and the input of the amplifier (202) when a voltage at the input of the amplifier (202) is less than the final bias voltage, thereby reducing an enable time of the amplifier (202). The fast charge circuit (210) is further configured to open the low impedance path (246) when the voltage at the input of the amplifier (202) is substantially equal to the final bias voltage. The fast charge circuit (210) includes a comparator (224) configured to cause the low impedance path (246) to open when the voltage at the input of the amplifier (202) is substantially equal to a reference voltage.
    • 根据示例性实施例,放大模块(200)包括耦合到放大器(202)的输入的偏置电路(204),其中偏置电路(204)被配置为将放大器(202)的输入充电到 最终偏置电压。 放大模块(200)还包括快速充电电路(210),其配置成当放大器(204)的输入端处的电压为放大器(202)的输入端时,提供偏置电路(204)和放大器(202)的输入端之间的低阻抗路径(246) (202)小于最终偏置电压,从而减小放大器(202)的使能时间。 快速充电电路(210)还被配置为当放大器(202)的输入处的电压基本上等于最终偏置电压时,打开低阻抗通路(246)。 快速充电电路(210)包括比较器(224),其被配置为当放大器(202)的输入处的电压基本上等于参考电压时使低阻抗路径(246)打开。