利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

33 条记录 (耗时 0.018 秒)

    ENVELOPE TRACKING PUSH-PULL OR DIFFERENTIAL POWER AMPLIFIER
    2.
    发明申请
    ENVELOPE TRACKING PUSH-PULL OR DIFFERENTIAL POWER AMPLIFIER 有权
    ENVELOPE跟踪推拉或差分功率放大器

    公开(公告)号：US20150280653A1

    公开(公告)日：2015-10-01

    申请号：US14350218

    申请日：2012-10-04

    申请人： Nujira Limited

    发明人： Gerard Wimpenny

    IPC分类号： H03F1/02 ,  H04M1/02 ,  H03F3/26 ,  H03F3/45 ,  H03F3/21 ,  H03F3/19

    CPC分类号： H03F1/0233 ,  H03F1/0222 ,  H03F3/19 ,  H03F3/21 ,  H03F3/26 ,  H03F3/45076 ,  H03F2200/09 ,  H03F2200/102 ,  H03F2200/504 ,  H03F2203/45172 ,  H04M1/0202

    摘要： There is disclosed a power amplifier arrangement comprising: first and second active devices for amplifying in-phase and anti-phase parts of an input signal; a first DC supply network connected between the output of the first active device and a modulated supply voltage; a second DC supply network connected between the output of the second active device and the same modulated supply voltage and an output combiner for combining the amplified in-phase and anti-phase parts of the input signal.

    摘要翻译： 公开了一种功率放大器装置，包括：用于放大输入信号的同相和反相部分的第一和第二有源器件; 连接在第一有源器件的输出端和调制电源电压之间的第一DC供电网络; 连接在第二有源器件的输出端和相同的调制电源电压之间的第二DC供电网络和用于组合输入信号的放大的同相和反相部分的输出组合器。

    2G SUPPORT FOR 2G AND 3G/4G ENVELOPE TRACKING MODULATOR
    5.
    发明申请
    2G SUPPORT FOR 2G AND 3G/4G ENVELOPE TRACKING MODULATOR 有权
    2G支持2G和3G / 4G包装跟踪调节器

    公开(公告)号：US20140218109A1

    公开(公告)日：2014-08-07

    申请号：US14169204

    申请日：2014-01-31

    申请人： Nujira Limited

    发明人： Gerard Wimpenny

    IPC分类号： H03F3/217 ,  H03F3/19

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

    摘要： 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.

    摘要翻译： 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接收作为电源电压的第一输出电压的第一放大器， 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。

    DYNAMIC CHARACTERISATION OF AMPLIFIER AM-PM DISTORTION
    6.
    发明申请
    DYNAMIC CHARACTERISATION OF AMPLIFIER AM-PM DISTORTION 有权
    放大器AM-PM失真的动态特性

    公开(公告)号：US20130285740A1

    公开(公告)日：2013-10-31

    申请号：US13853249

    申请日：2013-03-29

    申请人： Nujira Limited

    发明人： Shaun Cummins ,  Garvin Wills ,  Gerard Wimpenny

    IPC分类号： G01R23/02

    CPC分类号： G01R23/02 ,  G01R23/20 ,  H03F1/0222 ,  H03F1/3241 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/192 ,  H03F2200/195 ,  H03F2200/198 ,  H03F2200/201 ,  H03F2200/204 ,  H03F2200/207 ,  H03F2200/411

    摘要： There is disclosed a method of determining an AM-PM distortion measurement for an amplifier, the method comprising: generating a test waveform to be provided to the input of the amplifier; periodically puncturing the test waveform with a fixed-level reference signal to generate a modified test waveform which alternates between test periods in which a portion of the test waveform is present and reference periods in which the fixed-level reference signal is present; measuring the amplifier AM-PM distortion in a test period; measuring the phase difference between the input and the output of the amplifier in reference periods either side of the test period; estimating a phase error in the test period in dependence on phase differences measured in the reference periods; and estimating the true amplifier AM-PM distortion by removing the estimated phase error from the measured amplifier AM-PM distortion.

    摘要翻译： 公开了一种确定放大器的AM-PM失真测量的方法，该方法包括：产生要提供给放大器的输入的测试波形; 用固定电平参考信号周期性地打孔测试波形，以产生在测试波形的一部分存在的测试周期与存在固定电平参考信号的参考周期之间交替的修改测试波形; 在测试期间测量放大器AM-PM失真; 在测试周期的任一侧的参考周期内测量放大器的输入和输出之间的相位差; 根据在参考期间测量的相位差来估计测试期间的相位误差; 并通过从测量的放大器AM-PM失真中去除估计的相位误差来估计真实放大器AM-PM失真。

    DYNAMIC CHARACTERISATION OF AMPLIFIER USING MULTIPLE ENVELOPE SHAPING FUNCTIONS
    7.
    发明申请
    DYNAMIC CHARACTERISATION OF AMPLIFIER USING MULTIPLE ENVELOPE SHAPING FUNCTIONS 有权
    使用多个包络形状函数的放大器的动态特性

    公开(公告)号：US20150088445A1

    公开(公告)日：2015-03-26

    申请号：US14389106

    申请日：2013-03-28

    申请人： Nujira Limited

    发明人： Garvin Wills ,  Gerard Wimpenny

    IPC分类号： G01R31/28 ,  G01R25/00

    CPC分类号： G01R31/2836 ,  G01R25/00 ,  H03F1/0222 ,  H03F1/0227 ,  H03F1/3241 ,  H03F2200/102 ,  H03F2200/195 ,  H03F2200/201 ,  H03F2200/207 ,  H03G3/3042

    摘要： A method of characterizing an envelope tracking amplification stage, the method comprising: generating an input test waveform which is representative of an input waveform under normal operating conditions of the amplification stage; applying a respective one of a plurality of different shaping functions, each comprising a non-linear transfer function, to the input signal envelope in each of a plurality of test periods during the period in which the input test waveform is applied as the input signal to generate the input to the envelope tracking modulated supply voltage; measuring parameters of the amplification stage during the period in which the input test waveform is applied in order to allow determination of the gain, phase and efficiency characteristics of the amplifier; and for each of the gain, phase and efficiency characteristics, generating a three dimensional plot of the characteristic with respect to input power and supply voltage applied to the amplifier.

    摘要翻译： 一种表征包络跟踪放大级的方法，所述方法包括：产生表示放大级的正常工作条件下的输入波形的输入测试波形; 在施加输入测试波形作为输入信号的时段期间，在多个测试周期中的每一个中将多个不同整形功能中的每一个包括非线性传递函数的相应一个施加到输入信号包络 生成输入到包络跟踪调制电源电压; 在施加输入测试波形的时段期间测量放大级的参数，以便确定放大器的增益，相位和效率特性; 并且对于增益，相位和效率特性中的每一个，产生关于施加到放大器的输入功率和电源电压的特性的三维图。

    SUPPLY MODULATOR
    8.
    发明申请
    SUPPLY MODULATOR 有权
    供应调制器

    公开(公告)号：US20150054588A1

    公开(公告)日：2015-02-26

    申请号：US14466173

    申请日：2014-08-22

    申请人： Nujira Limited

    发明人： Gerard Wimpenny

    IPC分类号： H03F1/02 ,  H03F3/21 ,  H03F3/19

    CPC分类号： H03F1/0222 ,  H03F1/0227 ,  H03F1/0277 ,  H03F3/19 ,  H03F3/21 ,  H03F3/217 ,  H03F2200/102 ,  H03F2200/339 ,  H03F2200/432 ,  H03F2200/451

    摘要： There is disclosed an envelope tracking supply modulator comprising a switch mode path and a linear amplifier path, wherein the linear amplifier path includes a plurality of amplifiers, each amplifier having an output stage of a different size, wherein at least one of the plurality of amplifiers is enabled in dependence on an output power.

    摘要翻译： 公开了一种包络跟踪电源调制器，其包括开关模式路径和线性放大器路径，其中线性放大器路径包括多个放大器，每个放大器具有不同大小的输出级，其中多个放大器中的至少一个放大器 根据输出功率启用。

    Power supply arrangement for multi-stage amplifier
    9.
    发明申请
    Power supply arrangement for multi-stage amplifier 有权
    多级放大器的电源装置

    公开(公告)号：US20140167841A1

    公开(公告)日：2014-06-19

    申请号：US14186265

    申请日：2014-02-21

    申请人： Nujira Limited

    发明人： Robert Henshaw ,  Gerard Wimpenny

    IPC分类号： H03F1/02

    CPC分类号： H03F1/02 ,  H03F1/0227 ,  H03F1/0277 ,  H03F3/189

    摘要： There is disclosed a multi-stage amplifier comprising: a first amplifier stage; a second amplifier stage; a first voltage supply stage arranged to provide a supply voltage to the first amplifier in dependence on an average power of a signal to be amplified; and a second voltage supply stage arranged to provide a supply voltage to the second amplifier in dependence on an instantaneous power of a signal to be amplified.

    摘要翻译： 公开了一种多级放大器，包括：第一放大级; 第二放大器级; 第一电压供应级，被布置成根据要放大的信号的平均功率向第一放大器提供电源电压; 以及第二电压供应级，其布置成根据要放大的信号的瞬时功率向第二放大器提供电源电压。

    Power Control
    10.
    发明申请
    Power Control 有权
    功率控制

    公开(公告)号：US20140132345A1

    公开(公告)日：2014-05-15

    申请号：US14063062

    申请日：2013-10-25

    申请人： Nujira Limited

    发明人： Gerard Wimpenny ,  Robert Henshaw

    IPC分类号： H03F1/02

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

    摘要： An amplification stage comprising: an input scaling block for scaling an input signal based on an input scaling factor to generate a scaled version of the input signal; a power amplifier for receiving the scaled version of the input signal and for generating an amplified version of said signal; an envelope detector for generating a signal representing the envelope of the input signal; an envelope scaling block for scaling the envelope signal based 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 based on the scaled envelope signal; a modulator for generating a power supply voltage for the amplifier based 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.

    摘要翻译： 一种放大级，包括：输入缩放块，用于基于输入缩放因子缩放输入信号，以产生所述输入信号的缩放版本; 功率放大器，用于接收所述缩放版本的所述输入信号并产生所述信号的放大版本; 包络检测器，用于产生表示输入信号的包络的信号; 包络缩放块，用于基于包络缩放因子缩放包络信号，以产生包络信号的缩放版本; 非线性映射块，用于基于经缩放的包络信号产生代表电源电压的电压; 基于由非线性映射块产生的电压产生放大器的电源电压的调制器; 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。