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    Receiver calibration with LO signal from inactive receiver
    13.
    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。

    On-chip dual-supply multi-mode CMOS regulators
    15.
    发明授权
    On-chip dual-supply multi-mode CMOS regulators 有权

    公开(公告)号：US11726513B2

    公开(公告)日：2023-08-15

    申请号：US17443093

    申请日：2021-07-20

    Applicant: QUALCOMM Incorporated

    Inventor： Yung-Chung Lo ,  Gang Zhang ,  Yiping Han ,  Frederic Bossu ,  Tsai-Pi Hung ,  Jae-Hong Chang

    IPC: G05F1/575 ,  H02M3/156 ,  H02M1/00

    CPC classification number: G05F1/575 ,  H02M3/156 ,  H02M1/0077

    Abstract: A method, an apparatus, and a computer program product are provided. The apparatus may be a regulator circuit. The regulator circuit includes a first voltage regulator to regulate a first input voltage to the first voltage regulator, the first voltage regulator including a P-type metal-oxide-semiconductor (PMOS), a second voltage regulator to regulate a second input voltage to the second voltage regulator, and a switch circuit to selectively activate at least one of the first voltage regulator or the second voltage regulator. In one aspect, the second voltage regulator includes an N-type metal-oxide-semiconductor (NMOS). In one aspect, the second voltage regulator comprises a two-stage operational transconductance amplifier (OTA) circuit. In an aspect, the first voltage regulator is coupled to the second voltage regulator.

    Diversity receiver with shared local oscillator signal in diversity mode
    17.
    发明授权
    Diversity receiver with shared local oscillator signal in diversity mode 有权
    分集接收器，具有分集模式下的共享本地振荡器信号

    公开(公告)号：US09014648B2

    公开(公告)日：2015-04-21

    申请号：US13725228

    申请日：2012-12-21

    Applicant: QUALCOMM Incorporated

    Inventor： Prasad Srinivasa Siva Gudem ,  Li Liu ,  Frederic Bossu

    IPC: H04B17/02 ,  H03D7/14 ,  H04B1/00 ,  H04B7/08

    CPC classification number: H03D7/1466 ,  H04B1/005 ,  H04B1/0064 ,  H04B7/0871 ,  Y02D70/40 ,  Y02D70/444

    Abstract: A multi-mode receiver is disclosed that is reconfigurable to share a local oscillator signal in diversity mode to save power consumption. In an exemplary embodiment, an apparatus includes a primary receiver having a primary mixer configured to down-convert a primary signal and a secondary mixer configured to down-convert a secondary signal in carrier aggregation mode. The apparatus also includes a supplemental mixer that uses a shared primary local oscillator (LO) signal generated by a shared primary frequency synthesizer in diversity mode to reduce power consumption. The apparatus further includes a controller configured to disable the secondary mixer and to enable the supplemental mixer to down-convert the secondary signal when operating in the diversity mode.

    Abstract translation: 公开了一种多模式接收机，其可重构以在分集模式下共享本地振荡器信号以节省功耗。 在一个示例性实施例中，一种装置包括主接收机，其具有被配置为对主信号进行下变频的主混合器和被配置为在载波聚合模式中对二级信号进行下变频的二级混合器。 该装置还包括补充混频器，其使用由分集模式中的共享主频率合成器产生的共享主本地振荡器（LO）信号以减少功耗。 该装置还包括控制器，其被配置为在分集模式下操作时禁用辅助混合器并且使补充混频器能够对次级信号进行下变频。

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