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    ADJUSTING LOCAL OSCILLATOR FREQUENCY DURING GAPS IN DATA TRANSMISSION
    1.
    发明申请
    ADJUSTING LOCAL OSCILLATOR FREQUENCY DURING GAPS IN DATA TRANSMISSION 审中-公开

    公开(公告)号：US20170104507A1

    公开(公告)日：2017-04-13

    申请号：US14880064

    申请日：2015-10-09

    Applicant: QUALCOMM Incorporated

    Inventor： Udara Charman Fernando ,  Ketan Humnabadkar ,  Tsai-Chen Huang ,  Tony Chang

    IPC: H04B1/16 ,  H03D7/14

    CPC classification number: H04B1/16

    Abstract: A receiver, including: a local oscillator (LO) configured to generate a signal with a frequency; a mixer coupled to the LO, the mixer configured to change a first frequency of an input signal to a second frequency based on the generated signal; a baseband filter coupled to the mixer and having a bandwidth; and a controller coupled to the local oscillator, the controller configured to adjust the frequency of the signal to shift the second frequency of the input signal to a third frequency in response to a presence of one or more intra-band jammers that fall within the bandwidth of the baseband filter so that a respective image of the one or more intra-band jammers avoids failing into a respective one of a plurality wanted signals in the input signal.

    RECEIVER CALIBRATION WITH LO SIGNAL FROM INACTIVE RECEIVER
    4.
    发明申请
    RECEIVER CALIBRATION WITH LO SIGNAL FROM INACTIVE RECEIVER 有权
    接收器使用无信号接收器的信号进行校准

    公开(公告)号：US20140171001A1

    公开(公告)日：2014-06-19

    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

    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。

    Receiver calibration with LO signal from inactive receiver
    6.
    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。

    Phase Detection and Correction for Non-Continuous Local Oscillator Generator
    7.
    发明申请
    Phase Detection and Correction for Non-Continuous Local Oscillator Generator 有权
    非连续本地振荡器发生器的相位检测和校正

    公开(公告)号：US20140270032A1

    公开(公告)日：2014-09-18

    申请号：US13829232

    申请日：2013-03-14

    Applicant: QUALCOMM INCORPORATED

    Inventor： Li Liu ,  Praveen-Kumar Sampath ,  Lai Kan Leung ,  Chiewcharn Narathong ,  Soon-Seng Lau ,  Ketan Humnabadkar ,  Raghu Narayan Challa ,  Devavrata Vasant Godbole

    IPC: H04L7/00 ,  H04L7/033

    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. In one design, a wireless device includes 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 further 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。 在一种设计中，无线设备包括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。 无线设备还可以包括（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 相位检测器用于检测LO信号的相位的下变频信号，以及（iii）校正模拟域或数字域中的LO信号的相位不连续性的相位校正器。

    TECHNIQUES FOR MANAGING A SHARED LOW NOISE AMPLIFIER AUTOMATIC GAIN CONTROL IN DUAL SIM DUAL ACTIVE DEPLOYMENTS
    9.
    发明申请
    TECHNIQUES FOR MANAGING A SHARED LOW NOISE AMPLIFIER AUTOMATIC GAIN CONTROL IN DUAL SIM DUAL ACTIVE DEPLOYMENTS 有权

    公开(公告)号：US20220312347A1

    公开(公告)日：2022-09-29

    申请号：US17348070

    申请日：2021-06-15

    Applicant: QUALCOMM Incorporated

    Inventor： Vineet Cherian ,  Thawatt Gopal ,  Tsai-Chen Huang ,  Ketan Humnabadkar ,  Rimal Patel ,  Reza Shahidi

    IPC: H04W52/52 ,  H04W52/28 ,  H04W72/04

    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 (DSDA) 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 (LNA) 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 LNA.

    Phase detection and correction for non-continuous local oscillator generator
    10.
    发明授权
    Phase detection and correction for non-continuous local oscillator generator 有权
    非连续本地振荡发生器的相位检测和校正

    公开(公告)号：US09344270B2

    公开(公告)日：2016-05-17

    申请号：US13829232

    申请日：2013-03-14

    Applicant: QUALCOMM Incorporated

    Inventor： Li Liu ,  Praveen-Kumar Sampath ,  Lai Kan Leung ,  Chiewcharn Narathong ,  Soon-Seng Lau ,  Ketan Humnabadkar ,  Raghu Narayan Challa ,  Devavrata Vasant Godbole

    IPC: H03D3/24 ,  H04L27/20 ,  H04L7/033 ,  H03B21/01 ,  H04W52/02

    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. In one design, a wireless device includes 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 further 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。 在一种设计中，无线设备包括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。 无线设备还可以包括（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 相位检测器用于检测LO信号的相位的下变频信号，以及（iii）校正模拟域或数字域中的LO信号的相位不连续性的相位校正器。

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