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    Concurrent support for multiple frequency bands for satellite navigation signals
    3.
    发明授权
    Concurrent support for multiple frequency bands for satellite navigation signals 有权

    公开(公告)号：US10177873B1

    公开(公告)日：2019-01-08

    申请号：US15971609

    申请日：2018-05-04

    Applicant: QUALCOMM Incorporated

    Inventor： Yi Zeng ,  Hong Sun Kim ,  Cheng-Han Wang

    IPC: G01S19/32 ,  H04K3/00 ,  H03F3/19 ,  H04B1/30 ,  H03H11/34 ,  H03D7/16

    Abstract: A radio frequency (RF) receiver, for example a satellite positioning system receiver, can be configured to use a single phase locked loop for generating an oscillator signal to perform downconversion of signals in two different frequency bands using two or more local oscillators. A first RF signal portion includes a first signal band and undergoes double downconversion using a first mixer and a second mixer, while a second RF signal portion includes a second signal band and undergoes single downconversion using a single mixer. A controller is configured to determine a first oscillator divider value and a second oscillator divider value to avoid a jammer frequency and frequency dividers are used to generate the two or more local oscillators.

    Phase imbalance calibration
    4.
    发明授权
    Phase imbalance calibration 有权
    相位不平衡校准

    公开(公告)号：US09379929B2

    公开(公告)日：2016-06-28

    申请号：US14220425

    申请日：2014-03-20

    Applicant: QUALCOMM Incorporated

    Inventor： Cheng-Han Wang ,  I-Liang Lin ,  Liang Zhao ,  Hong Sun Kim ,  Yi Zeng

    IPC: H04B1/10 ,  H04L27/34 ,  H04L27/36 ,  H03D3/00

    CPC classification number: H04L27/3405 ,  H03C2200/0041 ,  H03D3/008 ,  H03D3/009 ,  H03D2200/0045 ,  H04L27/364

    Abstract: A circuit for performing a residual side band calibration is described. The circuit generally includes a phase imbalance detection circuit. The phase imbalance detection circuit may include a limiter. The phase imbalance detection circuit may be independent of gain imbalance. The circuit may also include a phase imbalance correction circuit. The phase imbalance detection circuit may control coupling between an inphase path and a quadrature path.

    Abstract translation: 描述用于执行残余边带校准的电路。 该电路通常包括相位不平衡检测电路。 相位不平衡检测电路可以包括限幅器。 相位不平衡检测电路可以与增益不平衡无关。 电路还可以包括相位不平衡校正电路。 相位不平衡检测电路可以控制同相路径和正交路径之间的耦合。

    Methods and apparatus for generating two-tone calibration signals for performing linearity calibration
    5.
    发明授权
    Methods and apparatus for generating two-tone calibration signals for performing linearity calibration 有权
    用于产生用于进行线性校准的双色调校信号的方法和装置

    公开(公告)号：US09231716B2

    公开(公告)日：2016-01-05

    申请号：US14265078

    申请日：2014-04-29

    Applicant: QUALCOMM Incorporated

    Inventor： Jesse Aaron Richmond ,  Cheng-Han Wang ,  Mohammad Bagher Vahid Far ,  Yi Zeng ,  Jin-Su Ko

    IPC: H04L27/06 ,  H04B17/21 ,  H04L7/033

    CPC classification number: H04B17/21 ,  H04L7/0331

    Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating a two-tone signal for performing linearity calibration of a radio frequency (RF) circuit. One example apparatus generally includes a tone generating circuit configured to generate a first single-tone signal from a digital clock signal and a mixer connected with the tone generating circuit and configured to mix the first single-tone signal with a second single-tone signal to provide a two-tone signal having frequencies at a sum and a difference of frequencies of the first and second single-tone signals.

    Abstract translation: 本公开的某些方面提供了用于生成用于执行射频（RF）电路的线性校准的双音信号的方法和装置。 一个示例性设备通常包括乐音发生电路，其被配置为从数字时钟信号产生第一单音信号，以及混音器，与音调发生电路相连，并配置为将第一单音信号与第二单音信号混合到 提供具有第一和第二单音信号的和频和频差的频率的双音信号。

    Ultra wideband transmitter
    6.
    发明授权
    Ultra wideband transmitter 有权

    公开(公告)号：US11967983B2

    公开(公告)日：2024-04-23

    申请号：US17934513

    申请日：2022-09-22

    Applicant: QUALCOMM Incorporated

    Inventor： Yi Zeng ,  Cheng-Han Wang ,  Emanuele Lopelli ,  Chan Hong Park ,  Liang Zhao ,  Le Nguyen Luong ,  Koorosh Akhavan

    IPC: H04B1/717 ,  H03F3/24

    CPC classification number: H04B1/7174 ,  H03F3/245 ,  H03F2200/09 ,  H03F2200/451

    Abstract: Aspects described herein include devices and methods for smart ultra wideband transmissions. In one aspect, an apparatus includes pulse generation circuitry configured to output a plurality of transmission (TX) pulse samples at a selected signal sample rate, where each pulse sample of the plurality of TX pulse samples comprises a value associated with a pulse amplitude at a corresponding sample time The apparatus includes a plurality of power amplifier (PA) cells, with each PA cell of the plurality of PA cells comprising a corresponding current source and associated gates, and where the associated gates of a PA cell are selectable to configure an on state and an off state. Logic circuitry of the apparatus is configured to set the on state or the off state for each PA cell.

    Quadrature voltage-controlled oscillator (QVCO) with improved phase noise and quadrature imbalance trade-off
    7.
    发明授权
    Quadrature voltage-controlled oscillator (QVCO) with improved phase noise and quadrature imbalance trade-off 有权

    公开(公告)号：US11695372B1

    公开(公告)日：2023-07-04

    申请号：US17650834

    申请日：2022-02-11

    Applicant: QUALCOMM Incorporated

    Inventor： Emanuele Lopelli ,  Cheng-Han Wang ,  Yi Zeng

    IPC: H03B5/12

    CPC classification number: H03B5/1228 ,  H03B5/124 ,  H03B5/1212 ,  H03B2200/009 ,  H03B2200/0078

    Abstract: Apparatus and methods for generating multiple oscillating signals. An example circuit generally includes a first voltage-controlled oscillator (VCO) circuit and a second VCO circuit having a differential bias input coupled to a differential output of the first VCO circuit. At least one of the first VCO circuit or the second VCO circuit generally includes: a pair of cross-coupled transistors comprising a first transistor and a second transistor, a first inductive element coupled between a first node and the drain of the first transistor, a second inductive element coupled between the first node and the drain of the second transistor, a third transistor having a drain coupled to the drain of the first transistor and having a source coupled to a second node, and a fourth transistor having a drain coupled to the drain of the second transistor and having a source coupled to the second node.

    Multi IQ-path synchronization
    8.
    发明授权
    Multi IQ-path synchronization 有权
    多IQ路径同步

    公开(公告)号：US09350589B2

    公开(公告)日：2016-05-24

    申请号：US14465768

    申请日：2014-08-21

    Applicant: QUALCOMM Incorporated

    Inventor： Kiyong Choi ,  Jeongsik Yang ,  Jin-Su Ko ,  Yi Zeng

    IPC: H04L27/00 ,  H04L27/26

    CPC classification number: H04L27/2662 ,  H04L27/2627 ,  H04L27/2649 ,  H04W56/0035

    Abstract: Aspects of a wireless apparatus and a method for handling a modulated signal include a frequency generator that produces a clock signal, a first synchronization circuit that generates a first sync enable signal based on an even edge of the clock signal, a second synchronization circuit that generates a second sync enable signal based on an even edge of the clock signal, a first divider having a first initial operating condition that generates a first IQ path based on the first sync enable signal, and a second divider having a second initial operating condition that generates a second IQ path based on the second sync enable signal, wherein the first and second operating conditions are not equal when initially powered.

    Abstract translation: 无线装置和处理调制信号的方法的方面包括产生时钟信号的频率发生器，基于时钟信号的偶边产生第一同步使能信号的第一同步电路，产生 基于所述时钟信号的偶边的第二同步使能信号，具有基于所述第一同步使能信号产生第一IQ路径的第一初始操作条件的第一分频器，以及产生第二初始操作条件的第二分频器， 基于第二同步使能信号的第二IQ路径，其中当初始供电时，第一和第二操作条件不相等。

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