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    METHOD AND APPARATUS FOR RECEIVING NAVIGATION SATELLITE SIGNALS FROM TWO BANDS
    11.
    发明申请
    METHOD AND APPARATUS FOR RECEIVING NAVIGATION SATELLITE SIGNALS FROM TWO BANDS 有权
    从两个银行接收航行卫星信号的方法和装置

    公开(公告)号：US20150198718A1

    公开(公告)日：2015-07-16

    申请号：US13797033

    申请日：2013-03-12

    Applicant: QUALCOMM Incorporated

    Inventor： Alireza Khalili ,  Hong Sun Kim ,  Jin-Su KO

    IPC: G01S19/32 ,  H04W52/02 ,  G01S19/21

    CPC classification number: G01S19/32 ,  G01S19/21 ,  G01S19/33 ,  H04W52/0216 ,  Y02D70/122 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164

    Abstract: Systems, apparatus and methods in a mobile device to multiplex two global navigation satellite system (GNSS) signals on a single hardware receiver chain are presented. The GNSS signals may come from a common GNSS system on two bands of two different GNSS systems overlapping on a common band. A duty cycle of the GNSS signals may be based on a harmonic being within one of the first band and the second band. The duty cycle may be based on signal quality, such as indicating a jammed or non jammed signal. The duty cycle may be of unequal proportions and less than 100% such that the receiver chain is idle for a percentage of time.

    Abstract translation: 提出了在单个硬件接收机链上复用两个全球导航卫星系统（GNSS）信号的移动设备中的系统，装置和方法。 GNSS信号可以来自在公共频带上重叠的两个不同GNSS系统的两个频带上的公共GNSS系统。 GNSS信号的占空比可以基于在第一频带和第二频带之一内的谐波。 占空比可以基于信号质量，例如指示卡住的或非卡住的信号。 占空比可能不等于100％，使接收机链空闲一段时间。

    Overlapping uncoupled inductors for low-cost multi-frequency voltage-controlled oscillators
    14.
    发明授权
    Overlapping uncoupled inductors for low-cost multi-frequency voltage-controlled oscillators 有权
    用于低成本多频电压控制振荡器的重叠非耦合电感器

    公开(公告)号：US09543892B1

    公开(公告)日：2017-01-10

    申请号：US14801535

    申请日：2015-07-16

    Applicant: QUALCOMM Incorporated

    Inventor： Mohammad Farazian ,  Amirpouya Kavousian ,  Alireza Khalili

    IPC: H03B5/08 ,  H03B5/12

    CPC classification number: H03B5/1256 ,  H03B5/08 ,  H03B5/12 ,  H03B5/1206

    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for generating multiple oscillating signals. One example circuit generally includes a first voltage-controlled oscillator (VCO) having a first inductor and a second VCO having a second inductor in parallel with a third inductor, wherein the second and third inductors are disposed inside a loop of the first inductor and may behave as a magnetic dipole. The loop of the first inductor may be symmetrical, and a combined geometry of loops of the second and third inductors may be symmetrical. The coupling coefficient (k) between the first inductor and a combination of the second and third inductors may be small (e.g., k

    Abstract translation: 本公开的某些方面提供了用于产生多个振荡信号的技术和装置。 一个示例电路通常包括具有第一电感器的第一压控振荡器（VCO）和具有与第三电感器并联的第二电感器的第二VCO，其中第二和第三电感器设置在第一电感器的环路内，并且可以 表现为磁偶极子。 第一电感器的环路可以是对称的，并且第二和第三电感器的环路的组合几何形状可以是对称的。 由于电路布局的对称几何形状，第一电感器和第二和第三电感器的组合之间的耦合系数（k）可能很小（例如，k <0.01）。 利用较小的k，第一和第二VCO的电感器可以彼此更靠近地放置，从而减少两个VCO消耗的面积。

    Low-power RX synthesizer sharing TX hardware
    15.
    发明授权
    Low-power RX synthesizer sharing TX hardware 有权
    低功耗RX合成器共享TX硬件

    公开(公告)号：US09258021B1

    公开(公告)日：2016-02-09

    申请号：US14607775

    申请日：2015-01-28

    Applicant: QUALCOMM Incorporated

    Inventor： Yashar Rajavi ,  Alireza Khalili ,  Muhammad Adnan

    IPC: H04B1/40 ,  H04B1/04

    CPC classification number: H04W52/028 ,  H04B1/403 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/40

    Abstract: An analog front-end (AFE) for a communications device includes a low-power frequency synthesizer with reduced footprint. The AFE includes a first frequency synthesizer and a second frequency synthesizer. The first frequency synthesizer is coupled to a transmit (TX) chain and to a receive (RX) chain of the AFE. The first frequency synthesizer is to generate a first local oscillator (LO) signal for transmitting or receiving carrier signals when the device is in a normal operating mode. The second frequency synthesizer is coupled to the RX chain and shares one or more components of the TX chain. The second frequency synthesizer is to utilize the one or more shared components to generate a second LO signal for receiving carrier signals when the device operates in a low-power mode. For example, the one or more shared components may include a voltage source and/or one or more inductors.

    Abstract translation: 用于通信设备的模拟前端（AFE）包括具有减小占位面积的低功率频率合成器。 AFE包括第一频率合成器和第二频率合成器。 第一个频率合成器耦合到AFE的发送（TX）链和接收（RX）链。 当第一频率合成器处于正常操作模式时，产生用于发送或接收载波信号的第一本地振荡器（LO）信号。 第二频率合成器耦合到RX链并共享TX链的一个或多个组件。 第二频率合成器是利用一个或多个共享分量来产生第二LO信号，用于在设备以低功率模式工作时接收载波信号。 例如，一个或多个共享组件可以包括电压源和/或一个或多个电感器。

    Method and apparatus for receiving navigation satellite signals from two bands
    16.
    发明授权
    Method and apparatus for receiving navigation satellite signals from two bands 有权
    用于从两个频带接收导航卫星信号的方法和装置

    公开(公告)号：US09176233B2

    公开(公告)日：2015-11-03

    申请号：US13797033

    申请日：2013-03-12

    Applicant: QUALCOMM Incorporated

    Inventor： Alireza Khalili ,  Hong Sun Kim ,  Jin-Su Ko

    IPC: H04B7/185 ,  H04J3/00 ,  H04J3/04 ,  G01S19/35 ,  G01S19/32 ,  G01S19/21 ,  G01S19/33 ,  H04W52/02

    CPC classification number: G01S19/32 ,  G01S19/21 ,  G01S19/33 ,  H04W52/0216 ,  Y02D70/122 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164

    Abstract: Systems, apparatus and methods in a mobile device to multiplex two global navigation satellite system (GNSS) signals on a single hardware receiver chain are presented. The GNSS signals may come from a common GNSS system on two bands of two different GNSS systems overlapping on a common band. A duty cycle of the GNSS signals may be based on a harmonic being within one of the first band and the second band. The duty cycle may be based on signal quality, such as indicating a jammed or non jammed signal. The duty cycle may be of unequal proportions and less than 100% such that the receiver chain is idle for a percentage of time.

    Abstract translation: 提出了在单个硬件接收机链上复用两个全球导航卫星系统（GNSS）信号的移动设备中的系统，装置和方法。 GNSS信号可以来自在公共频带上重叠的两个不同GNSS系统的两个频带上的公共GNSS系统。 GNSS信号的占空比可以基于在第一频带和第二频带之一内的谐波。 占空比可以基于信号质量，例如指示卡住的或非卡住的信号。 占空比可能不等于100％，使接收机链空闲一段时间。

    Wideband Residual Sideband Calibration
    18.
    发明申请
    Wideband Residual Sideband Calibration 审中-公开

    公开(公告)号：US20180083661A1

    公开(公告)日：2018-03-22

    申请号：US15273461

    申请日：2016-09-22

    Applicant: QUALCOMM Incorporated

    Inventor： Mohammad Emadi ,  Mazhareddin Taghivand ,  Alireza Khalili

    IPC: H04B1/10

    CPC classification number: H04B1/1036 ,  H04B1/16 ,  H04B17/0085 ,  H04B17/21 ,  H04B17/354

    Abstract: Various aspects of this disclosure describe the calibration of residual sideband energy in a receiver, for example estimating gain mismatch and phase mismatch in in-phase (I) and quadrature-phase channels (Q) of a receiver. An input to the receiver is supplied with an input signal generated to comprise a bandwidth including a plurality of frequencies, such as a linear frequency modulation signal. An output signal of the receiver is filtered by a filter programmed to be matched to the input signal, and estimates of gain error and phase error in I and Q channels of the receiver are determined from the filtered outputs.

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