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    Dynamically adjustable radio-frequency (RF) front-end
    62.
    发明授权
    Dynamically adjustable radio-frequency (RF) front-end 有权

    公开(公告)号：US10749566B2

    公开(公告)日：2020-08-18

    申请号：US16189533

    申请日：2018-11-13

    Applicant: QUALCOMM Incorporated

    Inventor： Joseph Patrick Burke ,  Ashwin Sampath ,  Mohammad Ali Tassoudji ,  Robert Gilmore ,  Vasanthan Raghavan

    IPC: H04B7/0413 ,  H04B1/525 ,  H03D7/16 ,  H04B1/04 ,  H03H11/34

    Abstract: Certain aspects of the present disclosure generally relate to radio frequency (RF) front-end circuitry. For example, certain aspects provide an apparatus having a first converter circuit configured to upconvert a first baseband (BB) signal to a first RF signal based on a mode of operation, and a second converter circuit configured to upconvert a second BB signal to a second RF signal based on the mode of operation. The apparatus also includes a first RF weight adjustment circuit configured to selectively apply an amplitude weight or a phase weight to at least one of the first RF signal or the second RF signal based on the mode of operation, and a controller configured to control a power state of the second converter circuit in dependence on the mode of operation.

    Over the air acquisition of radio frequency impairment information
    64.
    发明授权
    Over the air acquisition of radio frequency impairment information 有权

    公开(公告)号：US10348341B2

    公开(公告)日：2019-07-09

    申请号：US15940258

    申请日：2018-03-29

    Applicant: QUALCOMM Incorporated

    Inventor： Haim Mendel Weissman ,  Igor Gutman ,  Joseph Patrick Burke ,  Vijay Chellappa ,  Sumit Verma ,  Paul Draxler

    IPC: H04L27/38 ,  H04B1/04 ,  H04B17/23 ,  H04B17/24 ,  H04B17/309 ,  H04B17/354 ,  H04B17/373 ,  H04L5/00

    Abstract: Systems and methods for providing indications about the TX RF non-linear impairments are disclosed. In accordance with some implementations, a first device (UE or base station) estimates EVM indications for the signal and determines if the EVM indications is above a threshold. The first device may transmit the estimated TX non-linearity indications math as AM-AM, AM-PM, Volterra coefficients, and/or other performance metrics to a second device, that transmitted the signal, when it is determined that the EVM indications is above the threshold. Systems and methods for wireless communication impairment correction are also disclosed wherein, in accordance with some implementations, a first device receives estimated TX non-linearity indications such as AM-AM, AM-PM, and/or Volterra coefficients from a second device and performs non-linear correction of a transmit signal for the second receiver device based at least in part on the EVM indications. Other aspects, embodiments, and features are also claimed and described.

    Multi-tap adaptive filter for transmit signal leakage cancellation
    68.
    发明授权
    Multi-tap adaptive filter for transmit signal leakage cancellation 有权
    用于发射信号泄漏消除的多抽头自适应滤波器

    公开(公告)号：US09252831B2

    公开(公告)日：2016-02-02

    申请号：US13782366

    申请日：2013-03-01

    Applicant: QUALCOMM Incorporated

    Inventor： Roberto Rimini ,  Cong T Nguyen ,  Peter D Heidmann ,  Joseph Patrick Burke ,  Vladimir Aparin

    IPC: H04B1/56 ,  H04B1/44 ,  H04B1/525

    CPC classification number: H04B1/44 ,  H04B1/525

    Abstract: Exemplary embodiments are directed to systems, devices, and methods for mitigating effects of transmit signal leakage. A transceiver may include a transmitter and a receiver. The transceiver may further include a multi-tap analog adaptive filter coupled to each of the transmitter and the receiver and configured to generate an estimated transmit leakage signal based on at least a portion of a transmit signal from the transmitter and an error signal from the receiver.

    Abstract translation: 示例性实施例涉及用于减轻发射信号泄漏的影响的系统，设备和方法。 收发机可以包括发射机和接收机。 收发器还可以包括耦合到发射机和接收机中的每一个的多抽头模拟自适应滤波器，并被配置为基于来自发射机的发射信号的至少一部分和来自接收机的误差信号来产生估计的发射泄漏信号 。

    Reducing interference for multiple receive antennas
    69.
    发明授权
    Reducing interference for multiple receive antennas 有权
    减少多个接收天线的干扰

    公开(公告)号：US09197264B1

    公开(公告)日：2015-11-24

    申请号：US14330558

    申请日：2014-07-14

    Applicant: QUALCOMM Incorporated

    Inventor： Taesang Yoo ,  Wooseok Nam ,  Roberto Rimini ,  Jibing Wang ,  Yongbin Wei ,  Muhammad Sayed Khairy Abdelghaffar ,  Joseph Patrick Burke

    IPC: H04B1/10 ,  H04B7/04

    CPC classification number: H04B7/0854 ,  H04B1/1027 ,  H04B7/0691

    Abstract: Methods, systems, and devices are described for reducing interference for wireless communication in a wireless device with multiple receive antennas. In aspects for reducing interference, a combined signal may be generated by combining a plurality of received signals from a plurality of respective receive antennas of the wireless device, for example, using one or more different types of combining A common distortion of the plurality of received signals may be estimated based at least in part on the combined signal, and interference reduction may be performed on one or more of the plurality of received signals based at least in part on the estimated common distortion.

    Abstract translation: 描述了用于减少具有多个接收天线的无线设备中的无线通信的干扰的方法，系统和设备。 在减少干扰的方面中，可以通过组合来自无线设备的多个相应接收天线的多个接收信号来生成组合信号，例如，使用一种或多种不同类型的组合。 可以至少部分地基于组合信号来估计信号，并且可以至少部分地基于所估计的共同失真来对多个接收信号中的一个或多个执行干扰减少。

    Passive switched-capacitor filters conforming to power constraint
    70.
    发明申请
    Passive switched-capacitor filters conforming to power constraint 审中-公开

    公开(公告)号：US20140082040A1

    公开(公告)日：2014-03-20

    申请号：US14086101

    申请日：2013-11-21

    Applicant: QUALCOMM Incorporated

    Inventor： Chengzhi Pan ,  Joseph Patrick Burke

    IPC: H03H19/00

    CPC classification number: H03H17/0248 ,  H03H15/023 ,  H03H19/004 ,  H03H2007/0192

    Abstract: Passive switched-capacitor (PSC) filters are described herein. In one design, a PSC filter implements a second-order infinite impulse response (IIR) filter with two complex first-order IIR sections. Each complex first-order IIR section includes three sets of capacitors. A first set of capacitors receives a real input signal and an imaginary delayed signal, stores and shares electrical charges, and provides a real filtered signal. A second set of capacitors receives an imaginary input signal and a real delayed signal, stores and shares electrical charges, and provides an imaginary filtered signal. A third set of capacitors receives the real and imaginary filtered signals, stores and shares electrical charges, and provides the real and imaginary delayed signals. In another design, a PSC filter implements a finite impulse response (FIR) section and an IIR section for a complex first-order IIR section. The IIR section includes multiple complex filter sections operating in an interleaved manner.

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