知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

43 records (took 0.022 seconds)

    Cancellation of oscillator remodulation
    22.
    发明授权
    Cancellation of oscillator remodulation 有权
    取消振荡器再调制

    公开(公告)号：US08200170B2

    公开(公告)日：2012-06-12

    申请号：US12936443

    申请日：2009-04-02

    Applicant: Pascal Philippe

    Inventor： Pascal Philippe

    IPC: H04B1/04

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

    Abstract: A wireless transmitter (100) comprises a signal generator (10) for generating a signal, an amplifier (50) for amplifying the signal, and a phase shifting circuit (20) coupled between the signal generator (10) and the amplifier (50) and arranged to shift the phase of the signal to cancel remodulation of the signal generator (10) by the amplified signal.

    Abstract translation: 无线发射机（100）包括用于产生信号的信号发生器（10），用于放大信号的放大器（50）和耦合在信号发生器（10）和放大器（50）之间的移相电路（20） 并且被布置成通过放大的信号来移动信号的相位以消除信号发生器（10）的再调制。

    CANCELLATION OF OSCILLATOR REMODULATION
    23.
    发明申请
    CANCELLATION OF OSCILLATOR REMODULATION 有权
    取消振荡器重构

    公开(公告)号：US20110034136A1

    公开(公告)日：2011-02-10

    申请号：US12936443

    申请日：2009-04-02

    Applicant: Pascal Philippe

    Inventor： Pascal Philippe

    IPC: H04B1/04

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

    Abstract: A wireless transmitter (100) comprises a signal generator (10) for generating a signal, an amplifier (50) for amplifying the signal, and a phase shifting circuit (20) coupled between the signal generator (10) and the amplifier (50) and arranged to shift the phase of the signal to cancel remodulation of the signal generator (10) by the amplified signal.

    Abstract translation: 无线发射机（100）包括用于产生信号的信号发生器（10），用于放大信号的放大器（50）和耦合在信号发生器（10）和放大器（50）之间的移相电路（20） 并且被布置成通过放大的信号来移动信号的相位以消除信号发生器（10）的再调制。

    Distortion compensating apparatus
    26.
    发明申请
    Distortion compensating apparatus 有权
    失真补偿装置

    公开(公告)号：US20050047521A1

    公开(公告)日：2005-03-03

    申请号：US10951040

    申请日：2004-09-22

    Applicant: Hiroyoshi Ishikawa ,  Tokuro Kubo ,  Kazuo Nagatani ,  Yasuyuki Oishi ,  Hajime Hamada ,  Nobukazu Fudaba ,  Toru Maniwa ,  Hiroyuki Hayashi

    Inventor： Hiroyoshi Ishikawa ,  Tokuro Kubo ,  Kazuo Nagatani ,  Yasuyuki Oishi ,  Hajime Hamada ,  Nobukazu Fudaba ,  Toru Maniwa ,  Hiroyuki Hayashi

    IPC: H03F1/32 ,  H04K1/02

    CPC classification number: H03F1/3247 ,  H03F2201/3231 ,  H03F2201/3233

    Abstract: A distortion compensating apparatus calculates a distortion compensation coefficient in such a manner that a difference signal between a reference signal, which is a transmit signal, and a feedback signal will be diminished, updates an old distortion compensation coefficient by the calculated distortion compensation coefficient and applies distortion compensation to the transmit signal based upon this distortion compensation coefficient. In this apparatus, a phase correcting interval, which is for correcting the phase difference between the reference signal and the feedback signal, and a distortion compensation coefficient updating interval are generated alternately, a correction is applied so as to null the phase difference in the phase correcting interval, and the distortion compensation coefficient is updated in the distortion compensation coefficient updating interval.

    Abstract translation: 失真补偿装置以这样的方式来计算失真补偿系数，使得作为发送信号的参考信号与反馈信号之间的差信号将被减小，通过计算出的失真补偿系数来更新旧的失真补偿系数并应用 基于该失真补偿系数对发送信号进行失真补偿。 在该装置中，交替地产生用于校正参考信号和反馈信号之间的相位差的相位校正间隔和失真补偿系数更新间隔，进行校正，以使相位中的相位差无效 在失真补偿系数更新间隔中更新失真补偿系数。

    Use of antiphase signals for predistortion training within an amplifier system
    27.
    发明授权
    Use of antiphase signals for predistortion training within an amplifier system 有权
    在放大器系统中使用反相信号进行预失真训练

    公开(公告)号：US06313703B1

    公开(公告)日：2001-11-06

    申请号：US09517702

    申请日：2000-03-02

    Applicant: Andrew S. Wright ,  Steven J. Bennett

    Inventor： Andrew S. Wright ,  Steven J. Bennett

    IPC: H03F126

    CPC classification number: H03F1/3247 ,  H03F1/0294 ,  H03F2201/3231 ,  H03F2201/3233

    Abstract: A LINC amplifier of a radio frequency transmitter provides substantially linear amplification from two nonlinear amplifiers by decomposing the original signal into two constant amplitude envelope, phase varying signals, which, when combined, constructively and destructively interfere to re-form the original signal. The output of the LINC amplifier, which is to be transmitted via an antenna, is an amplified form of the original signal. The LINC amplifier uses a digital control mechanism to control and adapt a digital compensation network that directly compensates for the imperfections of the analog RF environment, including the amplifiers. The mechanism monitors the combined amplifier output and adjusts the signal components in order to precisely compensate for any differences in the characteristics of the separate signal paths which would cause the combination not to accurately represent the original signal. The mechanism also corrects the component signals using information which can be applied to the amplifiers independent of the signal to be transmitted.

    Abstract translation: 射频发射机的LINC放大器通过将原始信号分解成两个恒定幅度包络，相位变化信号，从两个非线性放大器提供基本线性的放大，当组合时，建设性地和相消性地干扰重新形成原始信号。 要通过天线传输的LINC放大器的输出是原始信号的放大形式。 LINC放大器使用数字控制机制来控制和调整直接补偿模拟RF环境（包括放大器）缺陷的数字补偿网络。 该机制监控组合放大器输出并调整信号分量，以便精确地补偿单独信号路径的特性中的任何差异，这将导致组合不能准确地表示原始信号。 该机构还使用可以应用于放大器的信息来校正分量信号，而与要发送的信号无关。

    Device and method for compensating phase distortion
    28.
    发明授权
    Device and method for compensating phase distortion 失效
    用于补偿相位失真的装置和方法

    公开(公告)号：US5982233A

    公开(公告)日：1999-11-09

    申请号：US880863

    申请日：1997-06-23

    Applicant: Leif Martin Hellmark ,  Torsten John Carlsson

    Inventor： Leif Martin Hellmark ,  Torsten John Carlsson

    IPC: H03F1/34 ,  H03F1/32 ,  H03F3/24 ,  H03F1/26

    CPC classification number: H03F1/3247 ,  H03F1/3282 ,  H03F3/24 ,  H03F2200/102 ,  H03F2201/3231

    Abstract: The present invention relates to a method of compensating for the phase distortion that occurs in a power amplified output signal in response to the output power of a power amplifier. The invention also relates to a phase distortion compensating device. The device includes a phase-locking and upconversion loop (30-39) which is connected to the input of a power amplifier (40). Briefly, the solution involves feeding a part of the signal (e.sub.pha) to be amplified back to a circuit (35) which combines this first-mentioned signal with a part of the amplified signal (e.sub.out) fed back from the output of the power amplifier (40), so as to achieve a smooth transition in the dominance of one signal over the other signal when the two signals are combined to obtain a new feedback signal (e.sub.fdb) from the combining circuit (35).

    Abstract translation: 本发明涉及一种补偿功率放大输出信号中响应于功率放大器输出功率的相位失真的方法。 本发明还涉及一种相位失真补偿装置。 该装置包括连接到功率放大器（40）的输入端的锁相和上变频回路（30-39）。 简而言之，解决方案包括将要放大的信号（epha）的一部分馈送到电路（35），该电路将先前提到的信号与从功率放大器的输出反馈的放大信号（eout）的一部分组合 （40），以便当组合两个信号以从组合电路（35）获得新的反馈信号（efdb）时，实现一个信号在另一个信号的优势中的平滑过渡。

    Apparatus for compensating of phase rotation in a final amplifier stage
    29.
    发明授权
    Apparatus for compensating of phase rotation in a final amplifier stage 失效
    用于补偿最终放大器级中的相位旋转的装置

    公开(公告)号：US5483681A

    公开(公告)日：1996-01-09

    申请号：US110944

    申请日：1993-08-24

    Applicant: Par S. T. Bergsten ,  Jan-Christian Nystrom

    Inventor： Par S. T. Bergsten ,  Jan-Christian Nystrom

    IPC: H03F1/26 ,  H03F1/32 ,  H03F1/34 ,  H04B1/04

    CPC classification number: H03F1/3247 ,  H03F1/3282 ,  H03F1/3294 ,  H03F2201/3231

    Abstract: An apparatus for compensating the phase rotation in the feedback loop of a cartesian feedback power amplifier in a final transmitter stage for quadrature modulation of the complex difference signal between a complex input signal and the corresponding complex feedback signal with a complex modulation signal for forming a modulated real valued first signal and for quadrature modulation of the output signal from the power amplifier with a complex demodulation signal for forming the complex feedback signal. The phase shift between the first signal and the second signal and between the quadrature component of the first signal and the second signal is detected for determining the phase rotation of the feedback loop. Furthermore, the phase rotation of the complex modulation signal can be changed with a compensating phase rotation defined by the determined phase rotation.

    Abstract translation: 一种用于补偿最终发射机级中笛卡尔反馈功率放大器的反馈回路中的相位旋转的装置，用于在复数输入信号和相应的复数反馈信号之间用复数调制信号进行正交调制，以形成调制 用于形成复数反馈信号的复数解调信号，用于对来自功率放大器的输出信号进行正交调制。 检测第一信号和第二信号之间以及第一信号的正交分量与第二信号之间的相移以确定反馈回路的相位旋转。 此外，复调制信号的相位旋转可以由由确定的相位旋转限定的补偿相位旋转来改变。

    Process and device for compensation of phase instabilities of the wave amplified by a microwave tube
    30.
    发明授权
    Process and device for compensation of phase instabilities of the wave amplified by a microwave tube 失效
    由微波管放大的波的相位不稳定性的补偿过程和装置

    公开(公告)号：US5402085A

    公开(公告)日：1995-03-28

    申请号：US48199

    申请日：1993-04-20

    Applicant: Gilles Cote

    Inventor： Gilles Cote

    IPC: H03F3/60 ,  H03F1/32 ,  H03F3/24 ,  H03F3/58 ,  H03L7/00 ,  H03F1/30

    CPC classification number: H03F3/58 ,  H03F1/3247 ,  H03F2201/3231

    Abstract: The voltage variation between the electrodes of the tube of a microwave amplifier (1) causing a phase Shift of the output wave from the microwave amplifier (1), the process according to the invention consists of creating a phase shift of the wave entering the tube of the microwave amplifier (1) that is substantially proportional to the voltage variation and in the direction opposite the phase shift of the output wave caused by this voltage variation.

    Abstract translation: 微波放大器（1）的管的电极之间的电压变化导致来自微波放大器（1）的输出波的相移，根据本发明的方法包括产生进入管的波的相移 的微波放大器（1），其基本上与电压变化成比例，并且与由该电压变化引起的与输出波相移的方向相反。

Patent Agency Ranking