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    METHODS AND APPARATUS FOR IMPLEMENTING PHASE ROTATION AT BASEBAND FREQUENCY FOR TRANSMIT DIVERSITY
    21.
    发明申请
    METHODS AND APPARATUS FOR IMPLEMENTING PHASE ROTATION AT BASEBAND FREQUENCY FOR TRANSMIT DIVERSITY 审中-公开
    用于实施基带频率的发射多径相位旋转的方法和装置

    公开(公告)号：WO2010014983A2

    公开(公告)日：2010-02-04

    申请号：PCT/US2009/052578

    申请日：2009-08-03

    Applicant: QUALCOMM INCORPORATED ,  TANG, Yiwu ,  HOLENSTEIN, Christian ,  CASSIA, Marco ,  RANJAN, Mahim

    Inventor： TANG, Yiwu ,  HOLENSTEIN, Christian ,  CASSIA, Marco ,  RANJAN, Mahim

    IPC: H04L27/00

    CPC classification number: H04B7/0682 ,  H04L1/0618 ,  H04L1/08

    Abstract: An apparatus for implementing phase rotation at baseband frequency for transmit diversity may include a primary transmit signal path and a diversity transmit signal path. Both the primary transmit signal path and the diversity transmit signal path may receive a primary transmit signal. A signal selector within the diversity transmit signal path may perform phase rotation with respect to the primary transmit signal while the primary transmit signal is at a baseband frequency, thereby producing a diversity transmit signal.

    Abstract translation: 用于实现用于发射分集的基带频率的相位旋转的装置可以包括主发射信号路径和分集发射信号路径。 主发射信号路径和分集发射信号路径都可以接收主发射信号。 在主发射信号处于基带频率的同时，分集发射信号路径内的信号选择器可以执行相对于主发射信号的相位旋转，从而产生分集发射信号。

    DIRECT CONVERSION RECEIVER ARCHITECTURE
    22.
    发明申请
    DIRECT CONVERSION RECEIVER ARCHITECTURE 审中-公开
    直接转换接收机架构

    公开(公告)号：WO2002067420A2

    公开(公告)日：2002-08-29

    申请号：PCT/US2002/004727

    申请日：2002-02-15

    Applicant: QUALCOMM INCORPORATED

    Inventor： LI, Tao ,  HOLENSTEIN, Christian ,  KANG, Injup ,  WALKER, Brett, C. ,  PETERZELL, Paul, E. ,  CHALLA, Raghu ,  SEVERSON, Matthew, L.

    IPC: H03G

    CPC classification number: H03G3/3078 ,  H03G3/3068 ,  H03G3/3089

    Abstract: A direct downconversion receiver architecture having a DC loop to remove DC offset from the signal components, a digital variable gain amplifier (DVGA) to provide a range of gains, an automatic gain control (AGC) loop to provide gain control for the DVGA and RF/analog circuitry, and a serial bus interface (SBI) unit to provide controls for the RF/analog circuitry via a serial bus. The DVGA may be advantageously designed and located as described herein. The operating mode of the VGA loop may be selected based on the operating mode of the DC loop, since these two loops interact with one another. The duration of time the DC loop is operated in an acquisition mode may be selected to be inversely proportional to the DC loop bandwidth in the acquisition mode. The controls for some or all of the RF/analog circuitry may be provided via the serial bus.

    Abstract translation: 具有用于去除信号分量的DC偏移的DC环路的直接下变频接收机架构，提供一系列增益的数字可变增益放大器（DVGA），用于为DVGA和RF提供增益控制的自动增益控制（AGC）回路 /模拟电路和串行总线接口（SBI）单元，通过串行总线为RF /模拟电路提供控制。 可以如本文所述有利地设计和定位DVGA。 可以基于DC循环的操作模式来选择VGA循环的操作模式，因为这两个循环彼此相互作用。 在采集模式中DC环路工作的持续时间可以被选择为与采集模式中的DC环路带宽成反比。 一些或全部RF /模拟电路的控制可以通过串行总线提供。

    LNA HAVING A POST-DISTORTION MODE AND A HIGH-GAIN MODE
    26.
    发明授权
    LNA HAVING A POST-DISTORTION MODE AND A HIGH-GAIN MODE 有权
    LNA具有失真模式和高增益模式

    公开(公告)号：EP2248256B1

    公开(公告)日：2011-09-28

    申请号：EP09708122.8

    申请日：2009-02-06

    Applicant: QUALCOMM Incorporated

    Inventor： HOLENSTEIN, Christian ,  DENG, Junxiong ,  KIM, Namsoo

    IPC: H03F3/45 ,  H03F3/193 ,  H03F1/32 ,  H03G1/00

    CPC classification number: H03F3/193 ,  H03F1/3205 ,  H03F1/3211 ,  H03F3/45188 ,  H03F2200/294 ,  H03F2200/357 ,  H03F2200/451 ,  H03F2203/45246 ,  H03F2203/45318 ,  H03F2203/45386 ,  H03F2203/45396 ,  H03G1/0029

    Abstract: A differential low noise amplifier (LNA) is operable in a selectable one of two modes. The LNA includes a first transistor (204), a second transistor (205), a third transistor (206) and a fourth transistor. In the first mode (PDC mode), the four transistors are configured to operate as a post-distortion cancellation (PDC) LNA. The third (206) and fourth (207) transistors operate as cancel transistors that improve linearity, but reduce LNA gain somewhat. In the second mode (high gain mode), the third (206) and fourth (207) transistors are configured so that amplified versions of the LNA input signal that they output are added to amplified versions of the LNA input signal that are output by the first and second main transistors (204, 205), resulting in increased gain. Multiplexing circuits are provided within the LNA so that the LNA is configurable into a selectable one of the two modes by controlling a digital mode control signal supplied to the LNA.

    Abstract translation: 差分低噪声放大器（LNA）可在两种模式中选择一种模式下工作。 LNA包括第一晶体管（204），第二晶体管（205），第三晶体管（206）和第四晶体管。 在第一模式（PDC模式）中，四个晶体管被配置为作为失真后消除（PDC）LNA来操作。 第三（206）和第四（207）晶体管用作消除晶体管，其改善线性度，但稍微降低LNA增益。 在第二模式（高增益模式）中，第三（206）和第四（207）晶体管被配置为使得它们输出的LNA输入信号的放大版本被添加到LNA输入信号的放大版本， 第一和第二主晶体管（204,205），导致增益增加。 在LNA内提供多路复用电路，使得通过控制提供给LNA的数字模式控制信号，可将LNA配置为两种模式中的可选择的一种。

    MULTIPLEX MODULES FOR CARRIER AGGREGATION RECEIVERS
    30.
    发明公开
    MULTIPLEX MODULES FOR CARRIER AGGREGATION RECEIVERS 审中-公开
    多载波模块载波聚合接收机

    公开(公告)号：EP3205027A1

    公开(公告)日：2017-08-16

    申请号：EP15717311.3

    申请日：2015-03-23

    Applicant: Qualcomm Incorporated

    Inventor： TASIC, Aleksandar Miodrag ,  NARATHONG, Chiewcharn ,  HOLENSTEIN, Christian ,  PAN, Dongling ,  TANG, Yiwu ,  RANGARAJAN, Rajagopalan ,  LEUNG, Lai Kan

    IPC: H04B1/00 ,  H03F1/22

    CPC classification number: H04L27/2653 ,  H03F1/223 ,  H03F3/193 ,  H03F3/245 ,  H04B1/0064 ,  H04L45/16 ,  H04L45/245

    Abstract: Multiplex modules for use in carrier aggregation receivers are disclosed. In an exemplary embodiment, an apparatus includes an LNA multiplexer configured to receive a plurality of RF signals at a plurality of input terminals and to combine the RF signals into a combined RF signal that is output from an output terminal. The apparatus also includes an LNA demultiplexer configured to receive the combined RF signal at an input port that is connected to the output terminal and to distribute the combined RF signal to a plurality of output ports.

    Abstract translation: 公开了用于载波聚合接收机的多路复用模块。 在一个示例性实施例中，一种装置包括LNA多路复用器，其被配置为在多个输入端子处接收多个RF信号并且将这些RF信号组合成从输出端子输出的组合RF信号。该装置还包括LNA解复用器 被配置为在连接到输出端子的输入端口处接收组合的RF信号并且将组合的RF信号分配到多个输出端口。

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