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    Apparatus and method for generating an oscillating output signal
    51.
    发明授权
    Apparatus and method for generating an oscillating output signal 有权
    用于产生振荡输出信号的装置和方法

    公开(公告)号：US09331704B2

    公开(公告)日：2016-05-03

    申请号：US13757666

    申请日：2013-02-01

    Applicant: QUALCOMM Incorporated

    Inventor： Yiwu Tang ,  Jianyun Hu ,  Chiewcharn Narathong

    IPC: H03L7/00 ,  H03L7/16 ,  H03C3/09 ,  H03B5/12 ,  H03L7/187 ,  H03L7/07 ,  H03L7/10

    CPC classification number: H03L7/16 ,  H03B5/1215 ,  H03B5/1243 ,  H03B5/1256 ,  H03B5/1296 ,  H03B2201/0208 ,  H03B2201/0216 ,  H03C3/0925 ,  H03C3/0941 ,  H03C3/0958 ,  H03L7/00 ,  H03L7/07 ,  H03L7/101 ,  H03L7/104 ,  H03L7/187

    Abstract: An apparatus for generating an oscillating output signal includes an inductive-capacitive (LC) circuit and a current tuning circuit. The LC circuit includes a primary inductor and a varactor coupled to the primary inductor. A capacitance of the varactor is responsive to a voltage at a control input of the varactor. The current tuning circuit includes a secondary inductor and a current driving circuit coupled to the secondary inductor. The current driving circuit is responsive to a current at a control input of the current driving circuit. An effective inductance of the primary inductor is adjustable via magnetic coupling to the secondary inductor, and a frequency of the oscillating output signal is responsive to the effective inductance of the primary inductor and to the capacitance of the varactor.

    Abstract translation: 用于产生振荡输出信号的装置包括电感 - 电容（LC）电路和电流调谐电路。 LC电路包括耦合到初级电感器的初级电感器和变容二极管。 变容二极管的电容响应于变容二极管的控制输入端的电压。 当前调谐电路包括二次电感器和耦合到次级电感器的电流驱动电路。 电流驱动电路响应于电流驱动电路的控制输入处的电流。 初级电感器的有效电感可通过与次级电感器的磁耦合进行调节，振荡输出信号的频率响应于初级电感器的有效电感和变容二极管的电容。

    Locking multiple voltage-controlled oscillators with a single phase-locked loop
    52.
    发明授权
    Locking multiple voltage-controlled oscillators with a single phase-locked loop 有权
    用单个锁相环锁定多个压控振荡器

    公开(公告)号：US09252790B2

    公开(公告)日：2016-02-02

    申请号：US14251331

    申请日：2014-04-11

    Applicant: QUALCOMM Incorporated

    Inventor： Yiwu Tang ,  Jong Min Park ,  Serkan Sayilir ,  Chiewcharn Narathong

    IPC: H03L7/099 ,  H03L7/081

    CPC classification number: H03L7/099 ,  H03L7/081 ,  H03L7/093

    Abstract: Locking multiple VCOs to generate a plurality of LO frequencies, including: receiving a plurality of divided VCO feedback signals from a plurality of VCOs; receiving a reference signal multiplied by a predetermined number of the plurality of VCOs; generating and processing the predetermined number of phase differences between the multiplied reference signal and the plurality of divided VCO feedback signals in a single PLL circuit including a digital loop filter to receive and process the phase differences and generate (produce) a filter output, wherein the digital loop filter includes a plurality of delay cells equal to the predetermined number; and generating and outputting (delayed) control voltages for the plurality of VCOs based on the filter output.

    Abstract translation: 锁定多个VCO以产生多个LO频率，包括：从多个VCO接收多个分割的VCO反馈信号; 接收乘以所述多个VCO的预定数量的参考信号; 在包括数字环路滤波器的单个PLL电路中产生和处理倍增参考信号与多个分压VCO反馈信号之间的预定数量的相位差，以接收和处理相位差并产生（产生）滤波器输出，其中， 数字环路滤波器包括等于预定数量的多个延迟单元; 以及基于滤波器输出产生并输出（延迟的）多个VCO的控制电压。

    Avoiding Spurious Responses with Reconfigurable LO Dividers
    55.
    发明申请
    Avoiding Spurious Responses with Reconfigurable LO Dividers 有权
    用可重配置的分频器避免杂散响应

    公开(公告)号：US20150334711A1

    公开(公告)日：2015-11-19

    申请号：US14644677

    申请日：2015-03-11

    Applicant: QUALCOMM Incorporated

    Inventor： Rajagopalan Rangarajan ,  Chiewcharn Narathong ,  Lai Kan Leung ,  Dongling Pan ,  Aleksandar Miodrag Tasic ,  Yiwu Tang

    IPC: H04W72/04 ,  H04W88/06 ,  H04L12/709

    CPC classification number: H04W72/0453 ,  H04B1/005 ,  H04B15/06 ,  H04L45/245 ,  H04W88/06

    Abstract: Methods and apparatus including: setting up a plurality of configurations for a plurality of local oscillator (LO) paths of a carrier aggregation (CA) transceiver operating with a plurality of bands; calculating and comparing frequencies for each LO path of the plurality of LO paths and at least one divider ratio of LO dividers for each band of the plurality of bands to identify frequency conflicts; and reconfiguring the LO dividers for the plurality of LO paths and the plurality of bands when the frequency conflicts are identified.

    Abstract translation: 一种方法和装置，包括：为多个频带操作的载波聚合（CA）收发机的多个本地振荡器（LO）路径建立多个配置; 计算和比较所述多个LO路径中的每个LO路径的频率和所述多个频带中的每个频带的LO分频器的至少一个分频比，以识别频率冲突; 以及当识别出频率冲突时，为多个LO路径和多个频带重新配置LO分频器。

    Reconfigurable receiver circuits for test signal generation
    57.
    发明授权
    Reconfigurable receiver circuits for test signal generation 有权
    用于测试信号产生的可重构接收器电路

    公开(公告)号：US09130666B2

    公开(公告)日：2015-09-08

    申请号：US14303552

    申请日：2014-06-12

    Applicant: QUALCOMM Incorporated

    Inventor： Lai Kan Leung ,  Chiewcharn Narathong ,  Jianyun Hu ,  Yunfei Feng

    IPC: H04B1/06 ,  H04B17/00 ,  H04B17/21 ,  H04B17/29 ,  H04B1/16

    CPC classification number: H04B17/21 ,  H03F3/193 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/451 ,  H04B1/1638 ,  H04B1/30 ,  H04B17/29

    Abstract: Receiver circuits that can be reconfigured to generate test signals in a wireless device are disclosed. In an exemplary design, an apparatus includes a mixer and an amplifier. The mixer downconverts an input radio frequency (RF) signal based on a local oscillator (LO) signal in a first mode. The amplifier, which is formed by at least a portion of the mixer, amplifies the LO signal and provides an amplified LO signal in a second mode. In another exemplary design, an apparatus includes an amplifier and an attenuator. The amplifier receives and amplifies an input RF signal in a first mode. The attenuator, which is formed by at least a portion of the amplifier, receives and passes an LO signal in a second mode.

    Abstract translation: 公开了可以被重新配置以在无线设备中生成测试信号的接收机电路。 在示例性设计中，装置包括混频器和放大器。 混合器在第一模式中基于本地振荡器（LO）信号来降频输入射频（RF）信号。 由混频器的至少一部分形成的放大器放大LO信号，并以第二模式提供放大的LO信号。 在另一示例性设计中，装置包括放大器和衰减器。 放大器以第一模式接收并放大输入RF信号。 由放大器的至少一部分形成的衰减器在第二模式中接收和传递LO信号。

    RECONFIGURABLE RECEIVER CIRCUITS FOR TEST SIGNAL GENERATION
    59.
    发明申请
    RECONFIGURABLE RECEIVER CIRCUITS FOR TEST SIGNAL GENERATION 有权
    用于测试信号产生的可重构接收器电路

    公开(公告)号：US20140162580A1

    公开(公告)日：2014-06-12

    申请号：US13787214

    申请日：2013-03-06

    Applicant: QUALCOMM INCORPORATED

    Inventor： Kan Lai Leung ,  Chiewcharn Narathong ,  Jianyun Hu ,  Yunfei Feng

    IPC: H04B1/16

    CPC classification number: H04B17/21 ,  H03F3/193 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/451 ,  H04B1/1638 ,  H04B1/30 ,  H04B17/29

    Abstract: Receiver circuits that can be reconfigured to generate test signals in a wireless device are disclosed. In an exemplary design, an apparatus includes a mixer and an amplifier. The mixer downconverts an input radio frequency (RF) signal based on a local oscillator (LO) signal in a first mode. The amplifier, which is formed by at least a portion of the mixer, amplifies the LO signal and provides an amplified LO signal in a second mode. In another exemplary design, an apparatus includes an amplifier and an attenuator. The amplifier receives and amplifies an input RF signal in a first mode. The attenuator, which is formed by at least a portion of the amplifier, receives and passes an LO signal in a second mode.

    Abstract translation: 公开了可以被重新配置以在无线设备中生成测试信号的接收机电路。 在示例性设计中，装置包括混频器和放大器。 混合器在第一模式中基于本地振荡器（LO）信号来降频输入射频（RF）信号。 由混频器的至少一部分形成的放大器放大LO信号，并以第二模式提供放大的LO信号。 在另一示例性设计中，装置包括放大器和衰减器。 放大器以第一模式接收并放大输入RF信号。 由放大器的至少一部分形成的衰减器在第二模式中接收和传递LO信号。

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