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    REDUCING TRANSIENT EFFECTS WHEN CHANGING TRANSMIT CHAIN POWER
    1.
    发明申请
    REDUCING TRANSIENT EFFECTS WHEN CHANGING TRANSMIT CHAIN POWER 审中-公开
    减少发送链功率变化时的瞬时效应

    公开(公告)号：WO2013154691A1

    公开(公告)日：2013-10-17

    申请号：PCT/US2013/028702

    申请日：2013-03-01

    Applicant: QUALCOMM INCORPORATED

    Inventor： HUMNABADKAR, Ketan ,  BANISTER, Brian Clarke ,  CHENG, Mingxia ,  LIN, Wei-Hao ,  PARK, Jong Hyeon

    IPC: H04B1/04 ,  H04B1/52

    CPC classification number: H04J3/16 ,  H04B1/0475 ,  H04B1/525

    Abstract: A method, an apparatus, and a computer program product for a wireless communication device are provided. The apparatus determines a receive timing for receiving through at least one receive chain element. The apparatus determines a time to turn on/off at least one transmit chain element based on the determined receive timing and based on receiver impact to the at least one receive chain element caused by turning on/off the at least one transmit chain element. The apparatus reduces receiver impact to the at least one receive chain element by turning on/off the at least one transmit chain element at the determined time.

    Abstract translation: 提供了一种用于无线通信设备的方法，设备和计算机程序产品。 该装置确定通过至少一个接收链元件接收的接收定时。 该设备基于所确定的接收定时确定基于接收机对至少一个接收链元件的影响来打开/关闭至少一个发送链元件的时间来打开/关闭至少一个发送链元素。 该装置通过在确定的时间打开/关闭至少一个发射链元件来减少对至少一个接收链元件的接收器影响。

    RECEIVER CALIBRATION WITH LO SIGNAL FROM INACTIVE RECEIVER
    2.
    发明申请
    RECEIVER CALIBRATION WITH LO SIGNAL FROM INACTIVE RECEIVER 审中-公开
    接收器使用无信号接收器的信号进行校准

    公开(公告)号：WO2014100048A1

    公开(公告)日：2014-06-26

    申请号：PCT/US2013/075882

    申请日：2013-12-17

    Applicant: QUALCOMM INCORPORATED

    Inventor： FERNANDO, Udara C. ,  CHANG, Li-Chung ,  CHELLAPPA, Vijay K. ,  BOSSU, Frederic ,  HUMNABADKAR, Ketan ,  SAHOTA, Gurkanwal Singh

    IPC: H04B17/00

    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下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。

    TECHNIQUES FOR MANAGING A SHARED LOW NOISE AMPLIFIER AUTOMATIC GAIN CONTROL IN DUAL SIM DUAL ACTIVE DEPLOYMENTS
    3.
    发明申请
    TECHNIQUES FOR MANAGING A SHARED LOW NOISE AMPLIFIER AUTOMATIC GAIN CONTROL IN DUAL SIM DUAL ACTIVE DEPLOYMENTS 审中-公开

    公开(公告)号：WO2022203802A1

    公开(公告)日：2022-09-29

    申请号：PCT/US2022/017684

    申请日：2022-02-24

    Applicant: QUALCOMM INCORPORATED

    Inventor： CHERIAN, Vineet ,  GOPAL, Thawatt ,  HUANG, Tsai-Chen ,  HUMNABADKAR, Ketan ,  PATEL, Rimal ,  SHAHIDI, Reza

    IPC: H03F3/189 ,  H03G3/30 ,  H04B1/00

    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may support multi-subscriber identity module (SIM) operation in dual SIM dual active (DSD A) deployments. In some aspects, the UE may receive, via an antenna of the UE, a first signal associated with a first network subscription on a first receive path of the antenna and a second signal associated with a second network subscription on a second receive path of the antenna. The UE may determine a signal strength for each of the first signal and the second signal, determine a first gain for the first receive path and a gain for a low noise amplifier (ENA) coupled with the antenna based on the signal strength of the first signal, and determine a gain for the second receive path based on the signal strength of the second signal and the gain of the ENA.

    PHASE DETECTION AND CORRECTION FOR A LOCAL OSCILLATOR GENERATOR OPERATING IN A NON-CONTINUOUS MANNER
    7.
    发明申请
    PHASE DETECTION AND CORRECTION FOR A LOCAL OSCILLATOR GENERATOR OPERATING IN A NON-CONTINUOUS MANNER 审中-公开
    本地振荡器发生器在不连续的操作中操作的相位检测和校正

    公开(公告)号：WO2014159083A1

    公开(公告)日：2014-10-02

    申请号：PCT/US2014/021891

    申请日：2014-03-07

    Applicant: QUALCOMM INCORPORATED

    Inventor： LIU, Li ,  SAMPATH, Praveen-Kumar ,  LEUNG, Lai Kan ,  NARATHONG, Chiewcharn ,  LAU, Soon-Seng ,  HUMNABADKAR, Ketan ,  CHALLA, Raghu Narayan ,  GODBOLE, Devavrata Vasant

    IPC: H03B21/01 ,  H04B17/00 ,  H04L7/00

    CPC classification number: H04L7/0331 ,  H03B21/01 ,  H03D3/009 ,  H04W52/02 ,  H04W52/0209 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164

    Abstract: Techniques for detecting and correcting phase discontinuity of a local oscillator (LO) signal are disclosed. A wireless device may include an LO generator and a phase detector. The LO generator generates an LO signal used for frequency conversion and is periodically powered on and off. The phase detector detects the phase of the LO signal when the LO generator is powered on. The detected phase of the LO signal is used to identify phase discontinuity of the LO signal. The wireless device may include (i) a single-tone generator that generates a single-tone signal used to detect the phase of the LO signal, (ii) a downconverter that downconverts the single-tone signal with the LO signal and provides a downconverted signal used by the phase detector to detect the phase of LO signal, and (iii) phase corrector that corrects phase discontinuity of the LO signal in the analog domain or digital domain.

    Abstract translation: 公开了用于检测和校正本地振荡器（LO）信号的相位不连续性的技术。 无线设备可以包括LO发生器和相位检测器。 LO发生器产生用于频率转换的LO信号，并且周期性地通电和关断。 当LO发生器通电时，相位检测器检测LO信号的相位。 LO信号的检测相位用于识别LO信号的相位不连续性。 无线设备可以包括（i）生成用于检测LO信号的相位的单音信号的单音发生器，（ii）下变频器，其使用LO信号对单音信号进行下变频并提供下变频 信号由相位检测器使用以检测LO信号的相位，以及（iii）相位校正器，用于校正模拟域或数字域中的LO信号的相位不连续性。

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