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    MULTIPLEX MODULES FOR CARRIER AGGREGATION RECEIVERS
    3.
    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

    申请人： Qualcomm Incorporated

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

    IPC分类号： H04B1/00 ,  H03F1/22

    CPC分类号： H04L27/2653 ,  H03F1/223 ,  H03F3/193 ,  H03F3/245 ,  H04B1/0064 ,  H04L45/16 ,  H04L45/245

    摘要： 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.

    摘要翻译： 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。

    METHODS AND APPARATUS FOR IMPLEMENTING PHASE ROTATION AT BASEBAND FREQUENCY FOR TRANSMIT DIVERSITY
    4.
    发明公开
    METHODS AND APPARATUS FOR IMPLEMENTING PHASE ROTATION AT BASEBAND FREQUENCY FOR TRANSMIT DIVERSITY 审中-公开
    VERFAHREN UND VORRICHTUNG ZUR PHASENVERSCHIEBUNG BEI BASISBANDFREQUENZFÜRÜBERTRAGUNGSDIVERSITÄT

    公开(公告)号：EP2308190A2

    公开(公告)日：2011-04-13

    申请号：EP09791097.0

    申请日：2009-08-03

    申请人： QUALCOMM Incorporated

    发明人： TANG, Yiwu ,  HOLENSTEIN, Christian ,  CASSIA, Marco ,  RANJAN, Mahim

    IPC分类号： H04L1/06 ,  H04L1/08

    CPC分类号： H04B7/0682 ,  H04L1/0618 ,  H04L1/08

    摘要： 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.

    摘要翻译： 用于实现用于发射分集的基带频率处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。 分集发射信号路径内的信号选择器可以在主发射信号处于基带频率时相对于主发射信号执行相位旋转，从而产生分集发射信号。

    DC OFFSET CANCELLATION CIRCUIT FOR A RECEIVER
    5.
    发明公开
    DC OFFSET CANCELLATION CIRCUIT FOR A RECEIVER 审中-公开
    接收器使用偏移补偿

    公开(公告)号：EP1929626A1

    公开(公告)日：2008-06-11

    申请号：EP06816070.4

    申请日：2006-09-28

    申请人： Qualcomm Incorporated

    发明人： SUN, Runhua ,  HOLENSTEIN, Christian ,  JAFFEE, James

    IPC分类号： H03D3/00

    CPC分类号： H03D3/008

    摘要： Techniques for cancelling DC offset are described. A DC offset cancellation circuit in a receiver cancels DC offsets caused by leaked LO (local oscillator) signals from a LO signal generator. The receiver first calibrates itself by using the DC offset cancellation circuit during a transmit mode. During the calibration, the DC offset cancellation circuit stores the DC offset voltage signal caused by the leaked LO signals. During a receiving mode when the receiver is receiving a signal, the receiver subtracts the stored DC offset voltage signal from the received signal to cancel the DC offsets caused by leaked LO signals.

    WIRELESS DEVICE WITH FILTERS TO SUPPORT CO-EXISTENCE IN ADJACENT FREQUENCY BANDS
    6.
    发明公开
    WIRELESS DEVICE WITH FILTERS TO SUPPORT CO-EXISTENCE IN ADJACENT FREQUENCY BANDS 审中-公开

    公开(公告)号：EP3471278A1

    公开(公告)日：2019-04-17

    申请号：EP18207590.3

    申请日：2013-02-22

    申请人： QUALCOMM Incorporated

    发明人： LANE, Mark Vernon ,  LEE, Chang-Ho ,  HOLENSTEIN, Christian ,  RANJAN, Mahim ,  SAMPATH, Praveen-Kumar ,  BOSSU, Frederic ,  VERMA, Sumit ,  SAMPSON, Wesley Alan

    IPC分类号： H04B1/04

    摘要： Techniques for using a narrow filter located before a power amplifier to reduce interference in an adjacent frequency band are disclosed. In an exemplary design, an apparatus (e.g., a wireless device) includes the narrow filter and the power amplifier. The narrow filter is for a first frequency band (e.g., Band 40) and has a first bandwidth that is more narrow than the first frequency band. The narrow filter receives and filters an input radio frequency (RF) signal and provides a filtered RF signal. The power amplifier receives and amplifies the filtered RF signal and provides an amplified RF signal. The apparatus may further include a full filter for the first frequency band and located after the power amplifier. The full filter receives and filters the amplified RF signal and provides an output RF signal when it is selected for use.

    RECEIVER ARCHITECTURE
    8.
    发明公开
    RECEIVER ARCHITECTURE 有权
    EMPFÄNGER，建筑学

    公开(公告)号：EP2896130A1

    公开(公告)日：2015-07-22

    申请号：EP13767181.4

    申请日：2013-09-11

    申请人： Qualcomm Incorporated

    发明人： CHANG, Li-Chung ,  GUDEM, Prasad Srinivasa Siva ,  BOSSU, Frederic ,  HOLENSTEIN, Christian

    IPC分类号： H04B1/00 ,  H04B1/28

    CPC分类号： H04J3/00 ,  H03F3/72 ,  H04B1/0064 ,  H04B1/0071

    摘要： A receiver architecture for carrier aggregation is disclosed. In an exemplary design, an apparatus (e.g., a wireless device, a circuit module, etc.) includes a plurality of low noise amplifiers (LNAs), a plurality of switches, and at least one downconverter. The LNAs receive and amplify at least one input radio frequency (RF) signal and provide at least one amplified RF signal. The switches are coupled to the outputs of the plurality of LNAs. The at least one downconverter is coupled to the plurality of switches, downconverts the at least one amplified RF signal, and provides at least one downconverted signal. The switches reduce the number of downconverters needed to support reception of transmissions on multiple sets of carriers via multiple receive antennas. The LNAs and the switches may be implemented on at least one front-end module or a back-end module. The downconverter(s) are implemented on the back-end module.

    摘要翻译： 公开了用于载波聚合的接收机架构。 在示例性设计中，装置（例如，无线装置，电路模块等）包括多个低噪声放大器（LNA），多个开关和至少一个下变频器。 LNA接收和放大至少一个输入射频（RF）信号并提供至少一个放大的RF信号。 开关耦合到多个LNA的输出端。 所述至少一个下变频器耦合到所述多个开关，对所述至少一个放大的RF信号进行下变频，并提供至少一个下变频信号。 交换机减少了通过多个接收天线支持在多组载波上接收传输所需的下变频器的数量。 LNA和交换机可以在至少一个前端模块或后端模块上实现。 下变频器在后端模块上实现。