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    Radio frequency (RF) amplifier bias circuit
    1.
    发明授权
    Radio frequency (RF) amplifier bias circuit 有权

    公开(公告)号：US11509269B2

    公开(公告)日：2022-11-22

    申请号：US16995468

    申请日：2020-08-17

    Applicant: QUALCOMM INCORPORATED

    Inventor： Jisun Ryu ,  Yan Kit Gary Hau ,  Guoqing Fu ,  Xinwei Wang ,  Xiangdong Zhang ,  Chenliang Du

    IPC: H03F1/30 ,  H03F3/21

    Abstract: An amplifier circuit includes an amplifier configured to receive a radio frequency (RF) input signal from an input node, a bias circuit comprising a reference transistor coupled between a reference current source and ground, and a bias transistor coupled to the reference transistor and configured to generate a main bias current to bias the amplifier, an input power sense circuit coupled to the input node, and an additional transistor coupled to the input power sense circuit and to the bias transistor, the additional transistor configured to generate an additional bias current to bias the amplifier, the additional bias current responsive to a power level of the RF input signal.

    Quadrature current-combining linearizing circuit for generating arbitrary phase and amplitude
    3.
    发明授权
    Quadrature current-combining linearizing circuit for generating arbitrary phase and amplitude 有权
    用于产生任意相位和幅度的正交电流组合线性化电路

    公开(公告)号：US09467196B2

    公开(公告)日：2016-10-11

    申请号：US14173085

    申请日：2014-02-05

    Applicant: QUALCOMM Incorporated

    Inventor： James Francis Imbornone ,  Xinwei Wang ,  Marc Gerald Dicicco ,  Frederic Carrez ,  Zhenying Luo ,  Xiangdong Zhang

    IPC: H04B1/40 ,  H04B1/48 ,  H04B1/04 ,  H04B1/00

    CPC classification number: H04B1/48 ,  H04B1/0057 ,  H04B1/0475 ,  H04B2001/485

    Abstract: A device includes a first circuit path coupled to a first node and a second node, the first circuit path having at least one first varactor circuit configured to receive a first tuning voltage, the first circuit path having a resistor with a selectable value, and a second circuit path coupled to the first node and the second node, the second circuit path having at least one second varactor circuit configured to receive a second tuning voltage, the second circuit path having a capacitor with a selectable value.

    Abstract translation: 一种设备包括耦合到第一节点和第二节点的第一电路路径，第一电路路径具有被配置为接收第一调谐电压的至少一个第一变容二极管电路，第一电路路径具有可选择值的电阻器，以及 第二电路路径，其耦合到第一节点和第二节点，第二电路路径具有被配置为接收第二调谐电压的至少一个第二变容二极管电路，第二电路路径具有具有可选择值的电容器。

    Step attenuator with constant input capacitance
    7.
    发明授权
    Step attenuator with constant input capacitance 有权

    公开(公告)号：US09985601B2

    公开(公告)日：2018-05-29

    申请号：US13826265

    申请日：2013-03-14

    Applicant: QUALCOMM Incorporated

    Inventor： Xinwei Wang ,  Xiangdong Zhang ,  Marc Gerald Dicicco

    IPC: H01P1/22 ,  H03H7/25

    CPC classification number: H03H7/25 ,  H01P1/22

    Abstract: A step attenuator with constant input capacitance and having good performance is disclosed. In an exemplary design, an apparatus includes a step attenuator having a constant input capacitance for different amounts of attenuation. The step attenuator receives an input signal, provides a variable amount of attenuation for the input signal, and provides an output signal. The step attenuator may include a plurality of attenuator sections coupled in series. Each attenuator section may include a plurality of capacitors and may have the constant input capacitance. At least one of the plurality of attenuator sections may be selected or unselected to obtain a selected amount of attenuation for the step attenuator. An attenuator section may provide a predetermined amount of attenuation or a variable amount of attenuation when selected. The apparatus may further include a power detector that receives and determines the power of the output signal from the step attenuator.

    Analog switch for RF front end
    8.
    发明授权
    Analog switch for RF front end 有权
    RF前端模拟开关

    公开(公告)号：US09128502B2

    公开(公告)日：2015-09-08

    申请号：US13961852

    申请日：2013-08-07

    Applicant: QUALCOMM Incorporated

    Inventor： James Francis Imbornone ,  Xinwei Wang ,  Zhenying Luo ,  Xiangdong Zhang

    IPC: H03K17/687 ,  G05F1/46 ,  H03K17/06

    CPC classification number: G05F1/461 ,  H03K17/063 ,  H03K2017/066 ,  H03K2217/0018 ,  H03K2217/0054

    Abstract: Techniques for improving the linearity of radio-frequency (RF) front-end switches. In an aspect, open-loop techniques are disclosed for superimposing the output voltage of one or more negative rectifiers on a negative substrate bias voltage to reduce the non-linearities associated with voltage-dependent substrate leakage current. In another aspect, closed-loop techniques are further disclosed for maintaining the substrate bias voltage close to a reference voltage. Exemplary embodiments of the circuit blocks are further described.

    Abstract translation: 提高射频（RF）前端交换机线性度的技术。 在一方面，公开了开环技术，用于将一个或多个负整流器的输出电压叠加在负的衬底偏置电压上，以减少与依赖于电压的衬底漏电流相关的非线性。 在另一方面，进一步公开了闭环技术以保持衬底偏置电压接近参考电压。 进一步描述电路块的示例性实施例。

    QUADRATURE CURRENT-COMBINING LINEARIZING CIRCUIT FOR GENERATING ARBITRARY PHASE AND AMPLITUDE
    9.
    发明申请
    QUADRATURE CURRENT-COMBINING LINEARIZING CIRCUIT FOR GENERATING ARBITRARY PHASE AND AMPLITUDE 有权
    用于产生相位和幅度的三角形电流组合线性化电路

    公开(公告)号：US20150222319A1

    公开(公告)日：2015-08-06

    申请号：US14173085

    申请日：2014-02-05

    Applicant: QUALCOMM Incorporated

    Inventor： James Francis Imbornone ,  Xinwei Wang ,  Marc Gerald Dicicco ,  Frederic Carrez ,  Zhenying Luo ,  Xiangdong Zhang

    IPC: H04B1/48

    CPC classification number: H04B1/48 ,  H04B1/0057 ,  H04B1/0475 ,  H04B2001/485

    Abstract: A device includes a first circuit path coupled to a first node and a second node, the first circuit path having at least one first varactor circuit configured to receive a first tuning voltage, the first circuit path having a resistor with a selectable value, and a second circuit path coupled to the first node and the second node, the second circuit path having at least one second varactor circuit configured to receive a second tuning voltage, the second circuit path having a capacitor with a selectable value.

    Abstract translation: 一种设备包括耦合到第一节点和第二节点的第一电路路径，第一电路路径具有被配置为接收第一调谐电压的至少一个第一变容二极管电路，第一电路路径具有可选择值的电阻器，以及 第二电路路径，其耦合到第一节点和第二节点，第二电路路径具有被配置为接收第二调谐电压的至少一个第二变容二极管电路，第二电路路径具有具有可选择值的电容器。

    ANALOG SWITCH FOR RF FRONT END
    10.
    发明申请
    ANALOG SWITCH FOR RF FRONT END 有权
    射频前端模拟开关

    公开(公告)号：US20150042399A1

    公开(公告)日：2015-02-12

    申请号：US13961852

    申请日：2013-08-07

    Applicant: QUALCOMM Incorporated

    Inventor： James Francis Imbornone ,  Xinwei Wang ,  Zhenying Luo ,  Xiangdong Zhang

    IPC: G05F1/46

    CPC classification number: G05F1/461 ,  H03K17/063 ,  H03K2017/066 ,  H03K2217/0018 ,  H03K2217/0054

    Abstract: Techniques for improving the linearity of radio-frequency (RF) front-end switches. In an aspect, open-loop techniques are disclosed for superimposing the output voltage of one or more negative rectifiers on a negative substrate bias voltage to reduce the non-linearities associated with voltage-dependent substrate leakage current. In another aspect, closed-loop techniques are further disclosed for maintaining the substrate bias voltage close to a reference voltage. Exemplary embodiments of the circuit blocks are further described.

    Abstract translation: 提高射频（RF）前端交换机线性度的技术。 在一方面，公开了开环技术，用于将一个或多个负整流器的输出电压叠加在负的衬底偏置电压上，以减少与依赖于电压的衬底漏电流相关的非线性。 在另一方面，进一步公开了闭环技术以保持衬底偏置电压接近参考电压。 进一步描述电路块的示例性实施例。

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