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    Carrier aggregation amplifier with dual gain control
    21.
    发明授权
    Carrier aggregation amplifier with dual gain control 有权
    具有双增益控制的载波汇聚放大器

    公开(公告)号：US09479131B2

    公开(公告)日：2016-10-25

    申请号：US14643854

    申请日：2015-03-10

    Applicant: QUALCOMM Incorporated

    Inventor： Ahmed Abdel Monem Youssef ,  Ehab Ahmed Sobhy Abdel Ghany ,  Li-Chung Chang

    IPC: H03G3/30 ,  H03F3/19 ,  H03F3/68 ,  H03G1/00 ,  H04B1/00 ,  H03F1/22 ,  H03F3/193

    CPC classification number: H03G3/3036 ,  H03F1/223 ,  H03F3/19 ,  H03F3/193 ,  H03F3/68 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2200/489 ,  H03G1/0029 ,  H04B1/0053

    Abstract: An apparatus includes a first amplification stage configured to amplify a first carrier signal and a second amplification stage configured to amplify a second carrier signal. The first amplification stage is direct-current (DC) coupled to the second amplification stage. First circuitry is coupled to the first amplification stage and configured to control a first gain of the first amplification stage. The first circuitry includes a first gain control transistor configured to selectively divert a first bleed current from a first output of the first amplification stage. Second circuitry is coupled to the second amplification stage and configured to control a second gain of the second amplification stage independently of the first gain. The second circuitry includes a second gain control transistor configured to selectively divert a second bleed current from a second output of the second amplification stage.

    Abstract translation: 一种装置包括被配置为放大第一载波信号的第一放大级和被配置为放大第二载波信号的第二放大级。 第一放大级是耦合到第二放大级的直流（DC）。 第一电路耦合到第一放大级并被配置为控制第一放大级的第一增益。 第一电路包括第一增益控制晶体管，其被配置为选择性地转移来自第一放大级的第一输出的第一泄放电流。 第二电路耦合到第二放大级并且被配置为独立于第一增益来控制第二放大级的第二增益。 第二电路包括第二增益控制晶体管，其被配置为选择性地转移来自第二放大级的第二输出的第二放电电流。

    Amplifiers with inductive degeneration and configurable gain and input matching
    25.
    发明授权
    Amplifiers with inductive degeneration and configurable gain and input matching 有权
    具有电感退化和可配置增益和输入匹配的放大器

    公开(公告)号：US09106185B2

    公开(公告)日：2015-08-11

    申请号：US13794110

    申请日：2013-03-11

    Applicant: QUALCOMM Incorporated

    Inventor： Ahmed A Youssef ,  Sherif Abdelhalem ,  Ehab A Abdel Ghany ,  Li-Chung Chang

    IPC: H03G3/12 ,  H03F1/22 ,  H03F1/08 ,  H03F1/56 ,  H03F3/189 ,  H03F3/45 ,  H03G1/00

    CPC classification number: H03F1/223 ,  H03F1/08 ,  H03F1/56 ,  H03F3/189 ,  H03F3/45179 ,  H03F2200/492 ,  H03G1/0023

    Abstract: Amplifiers with inductive degeneration and configurable gain and input matching are disclosed. In an exemplary design, an apparatus includes a gain transistor, an inductor, and an input matching circuit for an amplifier. The gain transistor has a variable gain determined based on its bias current. The inductor is coupled between the gain transistor and circuit ground. The input matching circuit is selectively coupled to the gain transistor based on the variable gain of the gain transistor. For example, the input matching circuit may be coupled to the gain transistor in a low-gain mode and decoupled from the gain transistor in the high-gain mode. In an exemplary design, the input matching circuit includes a resistor, a capacitor, and a second transistor coupled in series. The resistor is used for input matching of the amplifier. The second transistor couples or decouples the resistor to or from the gain transistor.

    Abstract translation: 公开了具有感应退化和可配置增益和输入匹配的放大器。 在示例性设计中，装置包括用于放大器的增益晶体管，电感器和输入匹配电路。 增益晶体管具有基于其偏置电流确定的可变增益。 电感器耦合在增益晶体管和电路接地之间。 基于增益晶体管的可变增益，输入匹配电路选择性地耦合到增益晶体管。 例如，输入匹配电路可以以低增益模式耦合到增益晶体管，并在高增益模式中与增益晶体管去耦。 在示例性设计中，输入匹配电路包括串联耦合的电阻器，电容器和第二晶体管。 该电阻用于放大器的输入匹配。 第二个晶体管将电阻器耦合或去耦合增益晶体管。

    ROUTING AND SHIELDING OF SIGNAL LINES TO IMPROVE ISOLATION
    26.
    发明申请
    ROUTING AND SHIELDING OF SIGNAL LINES TO IMPROVE ISOLATION 有权
    信号线的路由和屏蔽改善隔离

    公开(公告)号：US20140302802A1

    公开(公告)日：2014-10-09

    申请号：US13857022

    申请日：2013-04-04

    Applicant: QUALCOMM INCORPORATED

    Inventor： Li-Chung Chang ,  Ahmed A. Youssef

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

    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。

    SPLIT AMPLIFIERS WITH IMPROVED LINEARITY
    27.
    发明申请
    SPLIT AMPLIFIERS WITH IMPROVED LINEARITY 有权
    具有改进线性的分立放大器

    公开(公告)号：US20140266461A1

    公开(公告)日：2014-09-18

    申请号：US13840317

    申请日：2013-03-15

    Applicant: QUALCOMM INCORPORATED

    Inventor： Ahmed A. Youssef ,  Li-Chung Chang

    IPC: H03F3/68 ,  H03F3/24 ,  H03F3/193

    CPC classification number: H03F3/68 ,  H03F1/223 ,  H03F1/3205 ,  H03F1/56 ,  H03F3/193 ,  H03F3/211 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/489 ,  H03F2200/492 ,  H03F2200/541 ,  H03G1/0023

    Abstract: Split amplifiers with configurable gain and linearization circuitry are disclosed. In an exemplary design, an apparatus includes first and second amplifier circuits and a linearization circuit, which may be part of an amplifier. The first and second amplifier circuits are coupled in parallel and to an amplifier input. The linearization circuit is also coupled to the amplifier input. The first and second amplifier circuits are enabled in a high-gain mode. One of the first and second amplifier circuits is enabled in a low-gain mode. The linearization circuit is enabled in the second mode and disabled in the first mode. The amplifier is split into multiple sections. Each section includes an amplifier circuit and is a fraction of the amplifier. High linearly may be obtained using one amplifier circuit and the linearization circuit in the low-gain mode.

    Abstract translation: 公开了具有可配置增益和线性化电路的分路放大器。 在示例性设计中，装置包括第一和第二放大器电路和线性化电路，其可以是放大器的一部分。 第一和第二放大器电路并联耦合到放大器输入端。 线性化电路也耦合到放大器输入端。 第一和第二放大器电路在高增益模式下使能。 第一和第二放大器电路之一在低增益模式下使能。 线性化电路在第二模式下被使能并且在第一模式中被禁用。 放大器分为多个部分。 每个部分包括放大器电路，并且是放大器的一小部分。 可以使用一个放大器电路和低增益模式下的线性化电路获得高线性。

    Receiver calibration with LO signal from inactive receiver
    30.
    发明授权
    Receiver calibration with LO signal from inactive receiver 有权
    接收机使用无源接收机的LO信号进行校准

    公开(公告)号：US09154243B2

    公开(公告)日：2015-10-06

    申请号：US13777691

    申请日：2013-02-26

    Applicant: QUALCOMM Incorporated

    Inventor： Udara C. Fernando ,  Li-Chung Chang ,  Vijay K. Chellappa ,  Frederic Bossu ,  Ketan Humnabadkar ,  Gurkanwal Singh Sahota

    IPC: H04B17/00 ,  H04B17/21 ,  H04B1/06

    CPC classification number: H04B17/21

    Abstract: Techniques for calibrating a receiver based on a local oscillator (LO) signal from another receiver are disclosed. In an exemplary design, an apparatus (e.g., a wireless device or an integrated circuit) includes first and second local oscillator (LO) generators. The first LO generator generates a first LO signal used by a first receiver for frequency downconversion. The second LO generator generates a second LO signal used by a second receiver for frequency downconversion in a first operating mode. The second LO signal is used to generate a test signal for the first receiver in a second operating mode. The second LO signal may be provided as the test signal or may be amplitude modulated with a modulating signal to generate the test signal. The test signal may be used to calibrate residual sideband (RSB), second order input intercept point (IIP2), receive path gain, etc.

    Abstract translation: 公开了基于来自另一接收机的本地振荡器（LO）信号来校准接收机的技术。 在示例性设计中，装置（例如，无线装置或集成电路）包括第一和第二本地振荡器（LO）发生器。 第一LO发生器产生用于频率下变频的第一接收机使用的第一LO信号。 第二LO发生器在第一操作模式中产生由第二接收机用于频率下变频的第二LO信号。 第二LO信号用于在第二操作模式中为第一接收机生成测试信号。 第二LO信号可以作为测试信号提供，或者可以用调制信号进行幅度调制以产生测试信号。 测试信号可用于校准残余边带（RSB），二阶输入截点（IIP2），接收路径增益等。

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