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1. 发明授权

US09337787B2 Power amplifier with improved low bias mode linearity 有权
标题翻译：功率放大器具有改进的低偏置模式线性度
公开(公告)号：US09337787B2
公开(公告)日：2016-05-10
申请号：US14304149
申请日：2014-06-13
申请人： RF Micro Devices, Inc.
发明人： Derek Schooley , Alexander Wayne Hietala
IPC分类号： H03G3/30 , H03F3/21 , H03F1/02 , H03F3/191
CPC分类号： H03F3/21 , H03F1/0261 , H03F3/191 , H03F2200/18 , H03F2200/27 , H03F2200/451 , H03G3/30
摘要： 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.
摘要翻译：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。

2. 发明申请

US20140375390A1 POWER AMPLIFIER WITH IMPROVED LOW BIAS MODE LINEARITY 有权
标题翻译：功率放大器具有改进的低偏置模式线性
公开(公告)号：US20140375390A1
公开(公告)日：2014-12-25
申请号：US14304149
申请日：2014-06-13
申请人： RF Micro Devices, Inc.
发明人： Derek Schooley , Alexander Wayne Hietala
IPC分类号： H03F3/193 , H03F3/21
CPC分类号： H03F3/21 , H03F1/0261 , H03F3/191 , H03F2200/18 , H03F2200/27 , H03F2200/451 , H03G3/30
摘要： 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.
摘要翻译：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。

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