公开(公告)号：US09337787B2

公开(公告)日：2016-05-10

申请号：US14304149

申请日：2014-06-13

Applicant: RF Micro Devices, Inc.

Inventor： Derek Schooley ,  Alexander Wayne Hietala

IPC: H03G3/30 ,  H03F3/21 ,  H03F1/02 ,  H03F3/191

CPC classification number: H03F3/21 ,  H03F1/0261 ,  H03F3/191 ,  H03F2200/18 ,  H03F2200/27 ,  H03F2200/451 ,  H03G3/30

Abstract: Power amplifier circuitry includes a power amplifier including an input node and an output node, biasing circuitry, a selectable impedance network, and an input capacitor. The input capacitor is coupled to the input node of the power amplifier. The biasing circuitry is coupled to the input node of the power amplifier through the selectable impedance network. The power amplifier is operable in a low power operating mode and a high power operating mode. In the low power operating mode, the biasing circuitry delivers a first biasing current to the input node of the power amplifier, and a first impedance level of the selectable impedance is selected. In the high power operating mode, the biasing circuitry delivers a second biasing current to the input node of the power amplifier, and a second impedance level of the selectable impedance is selected.

Abstract translation: 功率放大器电路包括功率放大器，其包括输入节点和输出节点，偏置电路，可选阻抗网络和输入电容器。 输入电容器耦合到功率放大器的输入节点。 偏置电路通过可选择的阻抗网络耦合到功率放大器的输入节点。 功率放大器可在低功率工作模式和高功率工作模式下工作。 在低功率操作模式中，偏置电路将第一偏置电流传送到功率放大器的输入节点，并且选择可选阻抗的第一阻抗级别。 在高功率操作模式中，偏置电路将第二偏置电流传递到功率放大器的输入节点，并且选择可选择阻抗的第二阻抗水平。

公开(公告)号：US20140375390A1

公开(公告)日：2014-12-25

申请号：US14304149

申请日：2014-06-13

Applicant: RF Micro Devices, Inc.

Inventor： Derek Schooley ,  Alexander Wayne Hietala

IPC: H03F3/193 ,  H03F3/21

CPC classification number: H03F3/21 ,  H03F1/0261 ,  H03F3/191 ,  H03F2200/18 ,  H03F2200/27 ,  H03F2200/451 ,  H03G3/30

Abstract: Power amplifier circuitry includes a power amplifier including an input node and an output node, biasing circuitry, a selectable impedance network, and an input capacitor. The input capacitor is coupled to the input node of the power amplifier. The biasing circuitry is coupled to the input node of the power amplifier through the selectable impedance network. The power amplifier is operable in a low power operating mode and a high power operating mode. In the low power operating mode, the biasing circuitry delivers a first biasing current to the input node of the power amplifier, and a first impedance level of the selectable impedance is selected. In the high power operating mode, the biasing circuitry delivers a second biasing current to the input node of the power amplifier, and a second impedance level of the selectable impedance is selected.

Abstract translation: 功率放大器电路包括功率放大器，其包括输入节点和输出节点，偏置电路，可选阻抗网络和输入电容器。 输入电容器耦合到功率放大器的输入节点。 偏置电路通过可选择的阻抗网络耦合到功率放大器的输入节点。 功率放大器可在低功率工作模式和高功率工作模式下工作。 在低功率操作模式中，偏置电路将第一偏置电流传送到功率放大器的输入节点，并且选择可选阻抗的第一阻抗级别。 在高功率操作模式中，偏置电路将第二偏置电流传递到功率放大器的输入节点，并且选择可选择阻抗的第二阻抗水平。