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    相位噪声校正设备及其方法
    11.
    发明公开
    相位噪声校正设备及其方法 失效

    公开(公告)号：CN101611554A

    公开(公告)日：2009-12-23

    申请号：CN200880005193.2

    申请日：2008-02-06

    Applicant: 日本电气株式会社

    Inventor： 新井隼悟

    IPC: H04B1/10 ,  H04B1/04

    CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F3/24 ,  H03F2200/451 ,  H03F2201/3231

    Abstract: 提供了具有精确检测相位噪声分量的功能并且能够降低接收设备上的负荷的相位噪声校正设备。用于校正本地振荡器中所生成的相位噪声的相位噪声校正设备包括：对本地振荡器中所生成的信号进行分频的分频部件；生成和分频后的信号的频率相同频率的信号的参考信号生成部件；检测分频后的信号与所生成的参考信号之间的相位差的相位差检测部件；和根据所检测到的作为相位噪声分量的相位差在消除相位噪声的方向上给予基带信号相位旋转的相位噪声校正部件。

    补偿放大电路非线性的过程
    14.
    发明公开
    补偿放大电路非线性的过程 失效

    公开(公告)号：CN1058122A

    公开(公告)日：1992-01-22

    申请号：CN91104821.9

    申请日：1991-07-12

    Applicant: 亚瑞亚·勃朗勃威力有限公司

    Inventor： H·U·博斯贝格 ,  N·N·普里

    IPC: H03F1/32 ,  H03F3/20

    CPC classification number: H03F1/3247 ,  H03F1/3252 ,  H03F2201/3231

    Abstract: 一种补偿放大电路非线性的过程。利用非线性放大电路放大输入信号s(t)以形成输出信号y(t)。预失真滤波器连接到放大电路上游。在所述滤波器中由输入信号s(t)和预失真滤波器输出端反馈的预失真信号x(t)形成组合信号x(t)并对时间积分。预失真信号x(t)馈给非线性放大电路。在这种情况下，按照模型确定规定数目n+1的系数ko，…，kn，因此对于给定的放大电路输入信号x(t)按照该模型确定的输出信号基本上与放大电路输出信号y(t)相同。

    Reducing the distortion of applied modulation
    17.
    发明授权
    Reducing the distortion of applied modulation 有权
    减少应用调制的失真

    公开(公告)号：US08269572B2

    公开(公告)日：2012-09-18

    申请号：US12919514

    申请日：2009-02-26

    Applicant: Per-Olof Brandt

    Inventor： Per-Olof Brandt

    IPC: H03C1/06

    CPC classification number: H04L27/368 ,  H03F1/3247 ,  H03F1/3294 ,  H03F3/24 ,  H03F2200/336 ,  H03F2201/3231 ,  H03F2201/3233 ,  H04L27/362

    Abstract: Signal modulation apparatus for applying a modulation signal to a carrier signal, the apparatus comprising: an amplitude modulator for modulating the amplitude of the carrier signal in accordance with a control signal; first mixing means for mixing together fractions of the carrier signal before and after action of the amplitude modulator to produce a first detection signal indicative of the amplitude modulation applied by the amplitude modulator; and detection means for comparing the control signal with a first detection signal to evaluate distortion in the first detection signal as compared with the control signal.

    Abstract translation: 用于将调制信号应用于载波信号的信号调制装置，所述装置包括：幅度调制器，用于根据控制信号调制载波信号的振幅; 第一混合装置，用于将幅度调制器的作用之前和之后的载波信号的分数混合，以产生指示由幅度调制器施加的幅度调制的第一检测信号; 以及检测装置，用于将控制信号与第一检测信号进行比较，以评估与控制信号相比第一检测信号中的失真。

    Circuit for reducing distortion produced by an r.f. power amplifier
    18.
    发明授权
    Circuit for reducing distortion produced by an r.f. power amplifier 失效
    减少由R.F.生产的失败的电路 功率放大器

    公开(公告)号：US5121077A

    公开(公告)日：1992-06-09

    申请号：US653010

    申请日：1991-01-30

    Applicant: Melvyn McGann

    Inventor： Melvyn McGann

    IPC: H03C1/60 ,  H03C1/06 ,  H03F1/32

    CPC classification number: H03F1/3282 ,  H03C1/06 ,  H03F1/3247 ,  H03F2201/3231

    Abstract: A high frequency SSB radio transmitter has an envelope amplitude modulator for varying the envelope of an r.f. signal source based on an error signal from envelope detectors detecting the envelope of the input and output waveform. It also has a first phase modulator in a main feedback loop for varying the phase of the input waveform based on differences detected in a phase detector between the instantaneous phase of the input and output r.f. signal. To overcome the problem of spurious outputs from the phase detector resulting from the cross-over points of the SSB waveform when there are carrier breaks and other problems, a subsidiary, phase lock loop feeds a signal derived from the error signal to a second phase modulator to tend to hold the inputs to the phase detector in such a phase relationship that the output is zero. To cope with large phase shift errors between the input waveform and the output which result when the power amplifier changes frequency or temperature variations e.g. at the antenna, a broadband phase shifting network is brought into operation when a dual voltage comparator senses that the signal fed to the second modulator passes a value corresponding to its extremes of adjustment.

    Device for correcting the phase induced by the class C operation of the solid state amplifier and radar system using such a device
    19.
    发明授权
    Device for correcting the phase induced by the class C operation of the solid state amplifier and radar system using such a device 失效
    用于校正使用这种装置的固态放大器和雷达系统的类别C操作所引起的相位的装置

    公开(公告)号：US5075635A

    公开(公告)日：1991-12-24

    申请号：US536632

    申请日：1990-06-27

    Applicant: Alain Boulanger ,  Jacques Creff

    Inventor： Alain Boulanger ,  Jacques Creff

    IPC: H03F1/32 ,  H03L7/081

    CPC classification number: H03L7/0812 ,  H03F1/3247 ,  H03F1/3282 ,  H03F2201/3231

    Abstract: The present invention relates to a device for correcting the phase induced by the class C operation of a solid state amplifier. It is applied in the field of the manufacture of pulse radar transmitters. Solid state amplifiers are prone to generating phase variations. The invention relates to a measurement and correction loop which allows the real time elimination of phase variations due to heating up.

    Abstract translation: PCT No.PCT / FR89 / 00592 Sec。 371日期：1990年6月27日 102（e）日期1990年6月27日PCT 1989年12月17日PCT PCT。 出版物WO90 / 06625 日期：1990年6月14日。本发明涉及一种用于校正由固态放大器的C类操作引起的相位的装置。 它应用于脉冲雷达发射机制造领域。 固态放大器容易产生相位变化。 本发明涉及一种测量和校正回路，其允许实时消除由于加热引起的相位变化。

    Systems and methods for signal predistortion
    20.
    发明授权
    Systems and methods for signal predistortion 有权
    信号预失真的系统和方法

    公开(公告)号：US09577588B1

    公开(公告)日：2017-02-21

    申请号：US14849527

    申请日：2015-09-09

    Applicant: Hughes Network Systems, LLC

    Inventor： Bassel F. Beidas

    IPC: H04K1/02 ,  H04L25/03 ,  H04L25/49 ,  H03F1/32 ,  H03F3/21 ,  H04B1/04

    CPC classification number: H03F1/3241 ,  H03F1/3258 ,  H03F3/211 ,  H03F3/24 ,  H03F2201/3203 ,  H03F2201/3231 ,  H03F2201/3233 ,  H04B1/0475 ,  H04B2001/0408 ,  H04L27/368

    Abstract: A single or multistage signal predistorter includes an input coupled to receive an information signal comprising input samples and an output coupled to the high power amplifier, the signal predistorter configured to receive an input sample, generate a distortion sample based on an estimate of nonlinearity of the high power amplifier at an operating saturation level, modify the input sample with a correction term to generate a predistortion signal, wherein the correction term is proportional to the distortion sample, and further wherein the predistortion signal comprises the information signal modified to account for nonlinearities in the high power amplifier.

    Abstract translation: 单级或多级信号预失真器包括耦合以接收包括输入样本和耦合到高功率放大器的输出的信息信号的输入，该信号预失真器被配置为接收输入样本，基于所估计的非线性估计来产生失真样本 在功率饱和电平下的高功率放大器，用校正项修改输入采样以产生预失真信号，其中所述校正项与所述失真采样成比例，并且其中所述预失真信号包括被修改以消除非线性的信息信号 大功率放大器。

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