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    Power control
    2.
    发明授权
    Power control 有权
    功率控制

    公开(公告)号：US09225292B2

    公开(公告)日：2015-12-29

    申请号：US14592447

    申请日：2015-01-08

    Applicant: SNAPTRACK, INC.

    Inventor： Gerard Wimpenny ,  Robert Henshaw

    IPC: H03G3/20 ,  H03F1/02 ,  H03F3/24 ,  H03F3/19 ,  H03G3/00

    CPC classification number: H03F1/0233 ,  H03F1/02 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/451 ,  H03G3/007

    Abstract: An amplification stage comprising: an input scaling block for scaling an input signal in dependence on an input scaling factor to generate a scaled version of the input signal; a power amplifier for generating an amplified version of the scaled input signal; an envelope detector for generating a signal representing the envelope of the input signal; an envelope scaling block for scaling the envelope signal in dependence on an envelope scaling factor to generate a scaled version of the envelope signal; a non-linear mapping block for generating a voltage representative of the supply voltage in dependence on the scaled envelope signal; a modulator for generating a power supply voltage for the amplifier in dependence on the voltage generated by the non-linear mapping block; and a power control block for maintaining a linear relationship between the envelope scaling factor and the input scaling factor.

    Abstract translation: 一种放大级，包括：输入缩放块，用于根据输入缩放因子缩放输入信号，以产生输入信号的缩放版本; 用于产生经缩放的输入信号的放大版本的功率放大器; 包络检测器，用于产生表示输入信号的包络的信号; 信封缩放块，用于根据包络缩放因子对包络信号进行缩放，以产生包络信号的缩放版本; 非线性映射块，用于根据所缩放的包络信号产生代表电源电压的电压; 调制器，用于根据由非线性映射块产生的电压产生放大器的电源电压; 以及用于维持包络缩放因子和输入缩放因子之间的线性关系的功率控制块。

    Crest factor reduction applied to shaping table to increase power amplifier efficiency of envelope tracking amplifier
    6.
    发明授权
    Crest factor reduction applied to shaping table to increase power amplifier efficiency of envelope tracking amplifier 有权
    波峰因数降低应用于整形表，以增加包络跟踪放大器的功率放大器效率

    公开(公告)号：US09385680B2

    公开(公告)日：2016-07-05

    申请号：US13742506

    申请日：2013-01-16

    Applicant: SNAPTRACK, INC.

    Inventor： Gerard Wimpenny

    IPC: H03G3/20 ,  H03G11/04 ,  H03F3/189 ,  H03F1/02

    CPC classification number: H03G11/04 ,  H03F1/0222 ,  H03F1/0227 ,  H03F3/189 ,  H03F2200/102

    Abstract: There is disclosed a method of controlling an input to an envelope modulated power supply of an envelope tracking amplification stage, comprising: generating an envelope signal representing the envelope of a signal to be amplified; applying a shaping function to the envelope signal to generate a shaped envelope signal, including: clipping the shaped envelope signal at high input envelope values; and providing the shaped envelope signal as an input signal to the envelope modulated power supply.

    Abstract translation: 公开了一种控制包络跟踪放大级的包络调制电源的输入的方法，包括：产生表示待放大信号的包络线的包络信号; 对包络信号施加整形函数以产生成形包络信号，包括：以高输入包络值来限幅成形的包络信号; 并将成形的包络信号作为输入信号提供给信封调制电源。

    Parallel correction amplifier
    7.
    发明授权
    Parallel correction amplifier 有权
    并行校正放大器

    公开(公告)号：US09379671B2

    公开(公告)日：2016-06-28

    申请号：US14608898

    申请日：2015-01-29

    Applicant: SnapTrack, Inc.

    Inventor： Gerard Wimpenny

    IPC: H03G3/00 ,  H03F1/02 ,  H03F3/21 ,  H03F3/19

    CPC classification number: H03F1/0233 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/211 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2203/21193

    Abstract: A power supply stage and a method of controlling the same comprising: a means for generating an intermediate supply signal in dependence on a reference signal representing a desired power supply; and a plurality of adjusting means, each adapted to generate an adjusted supply signal tracking the reference signal, in dependence on the generated intermediate supply signal and the reference signal.

    Abstract translation: 一种电源级及其控制方法，包括：用于根据表示期望电源的参考信号产生中间供电信号的装置; 以及多个调节装置，每个调整装置适于根据产生的中间供给信号和参考信号产生跟踪参考信号的经调节的供应信号。

    2G support for 2G and 3G/4G envelope tracking modulator
    9.
    发明授权
    2G support for 2G and 3G/4G envelope tracking modulator 有权
    2G支持2G和3G / 4G包络跟踪调制器

    公开(公告)号：US09590563B2

    公开(公告)日：2017-03-07

    申请号：US15011015

    申请日：2016-01-29

    Applicant: SNAPTRACK, INC.

    Inventor： Gerard Wimpenny

    IPC: H01Q11/12 ,  H04B1/04 ,  H03F1/02 ,  H03F3/217 ,  H03F3/19 ,  H03F3/21

    CPC classification number: H03F1/0222 ,  H03F1/0277 ,  H03F3/19 ,  H03F3/211 ,  H03F3/217 ,  H03F2200/102 ,  H03F2200/391 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2203/21175 ,  H04B1/0483

    Abstract: There is provided an amplification stage including an envelope tracking modulated supply for tracking a reference signal, comprising a low frequency path for tracking low frequency variations in the reference signal and for providing a first output voltage, and a high frequency path for tracking high frequency variations in the reference signal and for providing a second output voltage, and a combiner for combining the first and second output voltages to provide a third output voltage, the amplification stage further comprising a first amplifier arranged to receive the first output voltage as a supply voltage, and a second amplifier arranged to receive the third output voltage as a supply voltage, wherein the first and second amplifiers are enabled in different modes of operation.

    Abstract translation: 提供了包括用于跟踪参考信号的包络跟踪调制电源的放大级，包括用于跟踪参考信号中的低频变化并用于提供第一输出电压的低频路径，以及用于跟踪高频变化的高频路径 以及用于组合第一和第二输出电压以提供第三输出电压的组合器，所述放大级还包括布置成将第一输出电压作为电源电压接收的第一放大器， 以及第二放大器，被布置为接收所述第三输出电压作为电源电压，其中所述第一和第二放大器在不同的操作模式下被使能。

    Control of cross-over point
    10.
    发明授权
    Control of cross-over point 有权
    控制交叉点

    公开(公告)号：US09548700B2

    公开(公告)日：2017-01-17

    申请号：US14584589

    申请日：2014-12-29

    Applicant: SNAPTRACK, INC.

    Inventor： Gerard Wimpenny ,  Martin Paul Wilson

    IPC: H03F1/02 ,  H03F3/26 ,  G05F1/66

    CPC classification number: H03F1/0205 ,  G05F1/66 ,  H03F1/0222 ,  H03F1/025 ,  H03F3/265 ,  H03F2200/102 ,  H03F2200/375 ,  H03F2200/451 ,  H03F2200/537 ,  H03F2200/541

    Abstract: There is provided an output stage comprising: a phase splitter for receiving an input signal and for generating first and second drive signals of opposite phase in dependence thereon; a DC offset signal generator for generating a DC offset signal; an adder for adding the DC offset signal to the first drive signal to provide a first modified drive signal; a subtractor for subtracting the DC offset signal from the second drive signal to provide a second modified drive signal; a first drive transistor associated with a first power supply voltage, for generating a first output signal in dependence on the first modified drive signal; a second drive transistor associated with a second power supply voltage, for generating a second output signal in dependence on the second modified drive signal; and a combiner for combining the first and second output signals to generate a phase combined output signal.

    Abstract translation: 提供了一种输出级，包括：相位分离器，用于接收输入信号并根据其产生相位相位的第一和第二驱动信号; 用于产生DC偏移信号的DC偏移信号发生器; 加法器，用于将DC偏移信号与第一驱动信号相加以提供第一修改的驱动信号; 减法器，用于从第二驱动信号减去DC偏移信号，以提供第二修改的驱动信号; 与第一电源电压相关联的第一驱动晶体管，用于根据第一修改的驱动信号产生第一输出信号; 与第二电源电压相关联的第二驱动晶体管，用于根据第二修改的驱动信号产生第二输出信号; 以及用于组合第一和第二输出信号以产生相位合成输出信号的组合器。

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