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    Routing and shielding of signal lines to improve isolation
    11.
    发明授权
    Routing and shielding of signal lines to improve isolation 有权
    信号线的路由和屏蔽，以提高隔离度

    公开(公告)号：US09277641B2

    公开(公告)日：2016-03-01

    申请号：US13857022

    申请日：2013-04-04

    Applicant: QUALCOMM Incorporated

    Inventor： Ahmed Abdel Monem Youssef ,  Li-Chung Chang ,  Ehab Ahmed Sobhy Abdel Ghany ,  Rui Xu ,  Wingching Vincent Leung ,  Allen He

    IPC: H05K1/02 ,  H04B3/02 ,  H04B1/44 ,  H04B7/04 ,  H04B1/00

    CPC classification number: H05K1/0228 ,  H04B1/005 ,  H04B1/44 ,  H04B3/02 ,  H04B7/04 ,  H05K1/0219 ,  H05K2201/09245 ,  Y10T307/74

    Abstract: Techniques for routing and shielding signal lines to improve isolation between the signal lines are disclosed. In an exemplary design, an apparatus includes first, second, and third signal lines and a switch. The first, second, and third signal lines are configurable to carry first, second, and third signals, respectively. The switch is coupled between the second signal line and AC ground and is closed when the second signal line is not carrying the second signal. The second signal line isolates the first and third signal lines when the switch is closed. Adjacent signal lines are not active at the same time. A signal line may include positive and negative signal lines, which may have at least one cross over in order to cancel coupling between the positive and negative signal lines.

    Abstract translation: 公开了用于路由和屏蔽信号线以改善信号线之间的隔离的技术。 在示例性设计中，装置包括第一，第二和第三信号线和开关。 第一，第二和第三信号线可配置为分别承载第一，第二和第三信号。 开关耦合在第二信号线和AC地之间，并且当第二信号线不携带第二信号时闭合。 当开关闭合时，第二信号线隔离第一和第三信号线。 相邻信号线同时不起作用。 信号线可以包括正和负信号线，其可以具有至少一个交叉以消除正和负信号线之间的耦合。

    AMPLIFIERS WITH NOISE SPLITTING
    12.
    发明申请
    AMPLIFIERS WITH NOISE SPLITTING 有权
    噪声分离放大器

    公开(公告)号：US20140113578A1

    公开(公告)日：2014-04-24

    申请号：US13656904

    申请日：2012-10-22

    Applicant: QUALCOMM INCORPORATED

    Inventor： Rui Xu ,  Li-Chung Chang

    IPC: H04B1/16

    CPC classification number: H03F1/26 ,  H03F1/223 ,  H03F3/19 ,  H03F3/195 ,  H03F3/211 ,  H03F3/245 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/421 ,  H03F2200/451 ,  H03F2200/492 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/21145

    Abstract: Amplifiers with noise splitting to improve noise figure are disclosed. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes a plurality of amplifier circuits and at least one interconnection circuit. The amplifier circuits receive an input radio frequency (RF) signal. The interconnection circuit(s) are coupled between the plurality of amplifier circuits. Each interconnection circuit is closed to short the outputs or internal nodes of two amplifier circuits coupled to that interconnection circuit. The plurality of amplifier circuits may include a plurality of gain circuits coupled to a plurality of current buffers, one gain circuit and one current buffer for each amplifier circuit. Each amplifier circuit provides an output current, which may include a portion of the current from each of the plurality of gain circuits when the plurality of amplifier circuits are enabled.

    Abstract translation: 公开了具有噪声分离以改善噪声系数的放大器。 在示例性设计中，装置（例如，无线装置，集成电路等）包括多个放大器电路和至少一个互连电路。 放大器电路接收输入射频（RF）信号。 互连电路耦合在多个放大器电路之间。 关闭每个互连电路以使耦合到该互连电路的两个放大器电路的输出或内部节点短路。 多个放大器电路可以包括耦合到多个电流缓冲器的多个增益电路，每个放大器电路的一个增益电路和一个电流缓冲器。 每个放大器电路提供输出电流，当多个放大器电路被使能时，其可以包括来自多个增益电路中的每一个的电流的一部分。

    On-Chip Test Tone Generator for Built-In Spur Testing
    13.
    发明申请
    On-Chip Test Tone Generator for Built-In Spur Testing 有权

    公开(公告)号：US20240421918A1

    公开(公告)日：2024-12-19

    申请号：US18337256

    申请日：2023-06-19

    Applicant: Qualcomm Incorporated

    Inventor： Shilei Hao ,  Dongling Pan ,  Rui Xu ,  Yiwu Tang

    IPC: H04B17/00 ,  H03L7/099

    Abstract: An apparatus is disclosed that implements an on-chip test tone generator for built-in spur testing. In an example aspect, the apparatus includes an integrated circuit with a test tone generator, at least one reference signal generator, and at least one signal propagation path. The test tone generator includes an amplitude control circuit. The at least one signal propagation path includes a transceiver path, a mixer, and a switch. The transceiver path is configured to be coupled to an antenna. The mixer has a first input coupled to the at least one reference signal generator. The switch is configured to selectively couple a second input of the mixer to the transceiver path or the amplitude control circuit of the at least one test tone generator.

    AMPLIFIERS WITH BOOSTED OR DEBOOSTED SOURCE DEGENERATION INDUCTANCE
    18.
    发明申请
    AMPLIFIERS WITH BOOSTED OR DEBOOSTED SOURCE DEGENERATION INDUCTANCE 有权
    具有升压或去离子源变差电感的放大器

    公开(公告)号：US20140300417A1

    公开(公告)日：2014-10-09

    申请号：US13857031

    申请日：2013-04-04

    Applicant: QUALCOMM INCORPORATED

    Inventor： Rui Xu ,  Li-Chung Chang

    IPC: H03F1/34

    CPC classification number: H03F1/342 ,  H03F1/223 ,  H03F3/193 ,  H03F3/245 ,  H03F3/45179 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/121 ,  H03F2200/156 ,  H03F2200/159 ,  H03F2200/492 ,  H03F2200/541 ,  H03F2203/45302 ,  H03F2203/45318 ,  H03F2203/45332 ,  H03F2203/45386 ,  H03F2203/45394 ,  H03F2203/45511 ,  H03F2203/45534 ,  H03F2203/7209

    Abstract: Amplifiers with boosted or deboosted source degeneration inductance are disclosed. In an exemplary design, an apparatus includes an amplifier circuit and a feedback circuit. The amplifier circuit receives an input signal and provides an output signal and includes a source degeneration inductor. The feedback circuit is coupled between a node of the amplifier circuit and the source degeneration inductor. The feedback circuit provides feedback to vary an input impedance of an amplifier including the amplifier circuit and the feedback circuit. The feedback circuit may be programmable and may be enabled to provide feedback or disabled to provide no feedback. Alternatively, the feedback circuit may always be enabled to provide feedback. In either case, the feedback circuit may have a variable gain to provide a variable input impedance for the amplifier.

    Abstract translation: 公开了具有升压或去激发的源极退化电感的放大器。 在示例性设计中，装置包括放大器电路和反馈电路。 放大器电路接收输入信号并提供输出信号并包括源极退化电感器。 反馈电路耦合在放大器电路的节点和源极退化电感之间。 反馈电路提供反馈以改变包括放大器电路和反馈电路的放大器的输入阻抗。 反馈电路可以是可编程的并且可以被启用以提供反馈或禁用以提供无反馈。 或者，反馈电路可以总是能够提供反馈。 在任一情况下，反馈电路可以具有可变增益以为放大器提供可变输入阻抗。

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