Power amplifier input structure having a differential output
    1.
    发明授权
    Power amplifier input structure having a differential output 失效
    功率放大器输入结构具有差分输出

    公开(公告)号:US07446613B2

    公开(公告)日:2008-11-04

    申请号:US11468383

    申请日:2006-08-30

    IPC分类号: H03F3/04

    摘要: A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to maintain a constant input impedance. The predriver includes a limiting amplifier that provides isolation between the power amplifier and the RF input. A DC feedback circuit is used by the predriver that maintains the DC level of the inverters to a desired level.

    摘要翻译: 方法和装置提供功率放大器的输入结构。 在一个示例中,输入结构具有输入网络和预驱动电路,以向功率放大器提供输入信号。 输入网络包括用于帮助保持恒定输入阻抗的变压器。 预驱动器包括限幅放大器,可在功率放大器和RF输入之间提供隔离。 预驱动器使用DC反馈电路,将逆变器的直流电平维持在期望的水平。

    Input structure for a power amplifier and associated methods
    2.
    发明授权
    Input structure for a power amplifier and associated methods 有权
    功率放大器的输入结构及相关方法

    公开(公告)号:US07161427B2

    公开(公告)日:2007-01-09

    申请号:US10743220

    申请日:2003-12-22

    IPC分类号: H03F1/00

    CPC分类号: H03F3/265 H03F1/301 H03F3/68

    摘要: A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to maintain a constant input impedance. The predriver includes a limiting amplifier that provides isolation between the power amplifier and the RF input. A DC feedback circuit is used by the predriver that maintains the DC level of the inverters to a desired level.

    摘要翻译: 方法和装置提供功率放大器的输入结构。 在一个示例中,输入结构具有输入网络和预驱动电路,以向功率放大器提供输入信号。 输入网络包括用于帮助保持恒定输入阻抗的变压器。 预驱动器包括限幅放大器,可在功率放大器和RF输入之间提供隔离。 预驱动器使用DC反馈电路,将逆变器的直流电平维持在所需的电平。

    Power amplifier input structure having a differential output
    3.
    发明授权
    Power amplifier input structure having a differential output 有权
    功率放大器输入结构具有差分输出

    公开(公告)号:US07113045B2

    公开(公告)日:2006-09-26

    申请号:US10743219

    申请日:2003-12-22

    IPC分类号: H03F3/04

    摘要: A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to maintain a constant input impedance. The predriver includes a limiting amplifier that provides isolation between the power amplifier and the RF input. A DC feedback circuit is used by the predriver that maintains the DC level of the inverters to a desired level.

    摘要翻译: 方法和装置提供功率放大器的输入结构。 在一个示例中,输入结构具有输入网络和预驱动电路,以向功率放大器提供输入信号。 输入网络包括用于帮助保持恒定输入阻抗的变压器。 预驱动器包括限幅放大器,可在功率放大器和RF输入之间提供隔离。 预驱动器使用DC反馈电路,将逆变器的直流电平维持在期望的水平。

    Input structure for a power amplifier and associated methods
    4.
    发明授权
    Input structure for a power amplifier and associated methods 失效
    功率放大器的输入结构及相关方法

    公开(公告)号:US07372327B2

    公开(公告)日:2008-05-13

    申请号:US11373053

    申请日:2006-03-11

    IPC分类号: H03F1/00

    CPC分类号: H03F3/265 H03F1/301 H03F3/68

    摘要: A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to maintain a constant input impedance. The predriver includes a limiting amplifier that provides isolation between the power amplifier and the RF input. A DC feedback circuit is used by the predriver that maintains the DC level of the inverters to a desired level.

    摘要翻译: 方法和装置提供功率放大器的输入结构。 在一个示例中,输入结构具有输入网络和预驱动电路,以向功率放大器提供输入信号。 输入网络包括用于帮助保持恒定输入阻抗的变压器。 预驱动器包括限幅放大器,可在功率放大器和RF输入之间提供隔离。 预驱动器使用DC反馈电路,将逆变器的直流电平维持在期望的水平。

    Circuit and method of establishing DC bias levels in an RF power amplifier
    6.
    发明授权
    Circuit and method of establishing DC bias levels in an RF power amplifier 失效
    在RF功率放大器中建立DC偏置电平的电路和方法

    公开(公告)号:US07675364B2

    公开(公告)日:2010-03-09

    申请号:US11764785

    申请日:2007-06-18

    IPC分类号: H03F1/36

    摘要: A method and apparatus is used to provide DC stabilization and noise reduction in a multistage power amplifier. The invention uses various feedback techniques to stabilize DC levels, which helps to reduce noise. The invention also uses other techniques to reduce noise, and to reduce the noise transfer function in a power amplifier.

    摘要翻译: 一种方法和装置用于在多级功率放大器中提供直流稳定和降噪。 本发明使用各种反馈技术来稳定DC电平,这有助于降低噪声。 本发明还使用其它技术来降低噪声并降低功率放大器中的噪声传递功能。

    Circuit and method of reducing noise in an RF power amplifier
    7.
    发明授权
    Circuit and method of reducing noise in an RF power amplifier 有权
    降低RF功率放大器噪声的电路和方法

    公开(公告)号:US07212070B2

    公开(公告)日:2007-05-01

    申请号:US10743217

    申请日:2003-12-22

    IPC分类号: H03F1/24

    CPC分类号: H03F3/45941 H03F1/30

    摘要: A method and apparatus is used to provide DC stabilization and noise reduction in a multistage power amplifier. The invention uses various feedback techniques to stabilize DC levels, which helps to reduce noise. The invention also uses other techniques to reduce noise, and to reduce the noise transfer function in a power amplifier.

    摘要翻译: 一种方法和装置用于在多级功率放大器中提供直流稳定和降噪。 本发明使用各种反馈技术来稳定DC电平,这有助于降低噪声。 本发明还使用其它技术来降低噪声并降低功率放大器中的噪声传递功能。

    Circuit and method of establishing DC bias levels in an RF power amplifier
    8.
    发明授权
    Circuit and method of establishing DC bias levels in an RF power amplifier 有权
    在RF功率放大器中建立DC偏置电平的电路和方法

    公开(公告)号:US07233199B2

    公开(公告)日:2007-06-19

    申请号:US11278078

    申请日:2006-03-30

    IPC分类号: H03F1/36

    摘要: A method and apparatus is used to provide DC stabilization and noise reduction in a multistage power amplifier. The invention uses various feedback techniques to stabilize DC levels, which helps to reduce noise. The invention also uses other techniques to reduce noise, and to reduce the noise transfer function in a power amplifier.

    摘要翻译: 一种方法和装置用于在多级功率放大器中提供直流稳定和降噪。 本发明使用各种反馈技术来稳定DC电平,这有助于降低噪声。 本发明还使用其它技术来降低噪声并降低功率放大器中的噪声传递功能。

    Circuit and method of establishing DC bias levels in an RF power amplifier
    9.
    发明授权
    Circuit and method of establishing DC bias levels in an RF power amplifier 失效
    在RF功率放大器中建立DC偏置电平的电路和方法

    公开(公告)号:US07064605B2

    公开(公告)日:2006-06-20

    申请号:US10743221

    申请日:2003-12-22

    IPC分类号: H03F1/34 H03G3/20

    摘要: A method and apparatus is used to provide DC stabilization and noise reduction in a multistage power amplifier. The invention uses various feedback techniques to stabilize DC levels, which helps to reduce noise. The invention also uses other techniques to reduce noise, and to reduce the noise transfer function in a power amplifier.

    摘要翻译: 一种方法和装置用于在多级功率放大器中提供直流稳定和降噪。 本发明使用各种反馈技术来稳定DC电平,这有助于降低噪声。 本发明还使用其它技术来降低噪声并降低功率放大器中的噪声传递功能。