中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

72 records (took 0.021 seconds)

    Super-linear multi-carrier power amplifier
    51.
    发明授权
    Super-linear multi-carrier power amplifier 有权
    超线性多载波功率放大器

    公开(公告)号：US6166601A

    公开(公告)日：2000-12-26

    申请号：US226709

    申请日：1999-01-07

    Applicant: Yuval Shalom ,  Danny Arison ,  Kalman Kaufman

    Inventor： Yuval Shalom ,  Danny Arison ,  Kalman Kaufman

    IPC: H03F1/32 ,  H03F1/26

    CPC classification number: H03F1/3229 ,  H03F1/3247 ,  H03F2201/3206

    Abstract: A super-linear feedforward amplifier, for amplifying radio-frequency input signals produced in one or more frequency channels over an input band, includes a radio-frequency power amplifier, which amplifies the signals. A signal cancellation circuit loop generates an error signal responsive to distortion products in the amplified signals. A digital correction block digitally equalizes the input signals responsive to a transfer function of the amplifier, whereby the input signals are substantially canceled out of the error signal over the entire input band. An error cancellation circuit loop subtracts the error signal from the amplified signals to generate a linearized output signal.

    Abstract translation: 用于放大在一个或多个频率信道上在输入频带上产生的射频输入信号的超线性前馈放大器包括放大信号的射频功率放大器。 信号消除电路环路产生响应于放大信号中的失真产物的误差信号。 数字校正块响应于放大器的传递函数数字地均衡输入信号，由此输入信号在整个输入频带上基本上抵消了误差信号。 误差消除电路回路从放大信号中减去误差信号，生成线性化的输出信号。

    Nonlinear amplifier calibration system and methods
    52.
    发明授权
    Nonlinear amplifier calibration system and methods 失效
    非线性放大器校准系统及方法

    公开(公告)号：US5955917A

    公开(公告)日：1999-09-21

    申请号：US921749

    申请日：1997-08-27

    Applicant: Michael I. Mandell ,  Chak M. Chie ,  Wei-Chun Wang ,  Arnold L. Berman

    Inventor： Michael I. Mandell ,  Chak M. Chie ,  Wei-Chun Wang ,  Arnold L. Berman

    IPC: H04B1/04 ,  H03F1/30 ,  H03F1/32 ,  H04B1/62 ,  H04B17/00 ,  G01R19/00 ,  H03F3/66 ,  H03G3/20

    CPC classification number: H03F1/3282 ,  H03F1/3247 ,  H04B17/13 ,  H03F2201/3206

    Abstract: Apparatus and methods that compensate for the effects of gain and phase variations of a high power amplifier in the presence of multicarrier traffic. The calibration system and method impose negligible degradation to the multicarrier traffic processed by the high power amplifier. A calibration signal generator is used to generate a plurality of nondisrupting calibration signals, such as pseudorandom numbers, which are also summed and combined with the multicarrier traffic signals. The plurality of nondisrupting calibration signals are also combined to produce a combined nondisrupting calibration signal. Each of the nondisrupting calibration signals is selectively output and is combined with sampled versions of the amplified multicarrier traffic signals produced by the high power amplifier to despread them. The despread multicarrier traffic signals are then processed in a processor to generate signals indicative of total signal power, intermodulation power, and phase shift of the despread multicarrier traffic signals to determine a current operating point of the high power amplifier on its gain transfer curve. Gain and phase control signals are generated by a processor that are coupled to the gain control and phase control circuits to set the amplifier at its most desirable operating point.

    Abstract translation: 在多载波业务存在的情况下补偿高功率放大器的增益和相位变化的影响的装置和方法。 校准系统和方法对由高功率放大器处理的多载波业务造成可忽略的降级。 校准信号发生器用于产生多个不中断的校准信号，例如伪随机数，它们也与多载波业务信号相加和组合。 多个非中断校准信号也被组合以产生组合的无中断校准信号。 每个非中断校准信号被选择性地输出，并且与由高功率放大器产生的放大的多载波业务信号的采样版本组合以对其进行解扩。 然后，解扩多载波业务信号在处理器中进行处理，以产生指示解扩多载波业务信号的总信号功率，互调功率和相移的信号，以确定高功率放大器在其增益传递曲线上的当前工作点。 增益和相位控制信号由耦合到增益控制和相位控制电路的处理器产生，以将放大器设置在其最理想的工作点。

    Public voltage compensation method and display panel
    53.
    发明授权
    Public voltage compensation method and display panel 有权

    公开(公告)号：US11777453B1

    公开(公告)日：2023-10-03

    申请号：US18326897

    申请日：2023-05-31

    Applicant: HKC CORPORATION LIMITED

    Inventor： Zhenghui Yuan ,  Baohong Kang

    IPC: H03F1/30 ,  H03F3/45 ,  G09G3/20

    CPC classification number: H03F1/302 ,  G09G3/20 ,  H03F3/4508 ,  G09G2300/043 ,  G09G2310/0291 ,  G09G2320/041 ,  H03F2201/3206 ,  H03F2203/45181

    Abstract: Disclosed are a public voltage compensation method and a display panel. The public voltage compensation method includes: installing the first multi-channel operational amplifier; connecting the first public voltage feedback output terminal with the first feedback input terminal, connecting the second public voltage feedback output terminal with the second feedback input terminal, connecting the first compensation input terminal with the first compensation output terminal, connecting the third compensation input terminal with the third compensation output terminal, connecting one of the n second compensation input terminals with the second compensation output terminal, and connecting one of the n fourth compensation input terminals with the fourth compensation output terminal; interconnecting each of the n second compensation input terminals and interconnecting each of the n fourth compensation input terminals.

    RF power transmission, modulation, and amplification embodiments
    58.
    发明授权
    RF power transmission, modulation, and amplification embodiments 有权
    RF功率传输，调制和放大实施例

    公开(公告)号：US09166528B2

    公开(公告)日：2015-10-20

    申请号：US14147742

    申请日：2014-01-06

    Applicant: ParkerVision, Inc.

    Inventor： David F. Sorrells ,  Gregory S. Rawlins ,  Michael W. Rawlins

    IPC: H04B1/04 ,  H03F1/02 ,  H03F1/32 ,  H03F3/21 ,  H03F3/24 ,  H03F3/38 ,  H03G3/30

    CPC classification number: H03F1/02 ,  H03F1/0205 ,  H03F1/0211 ,  H03F1/0261 ,  H03F1/0294 ,  H03F1/32 ,  H03F3/211 ,  H03F3/24 ,  H03F3/38 ,  H03F2200/102 ,  H03F2201/3206 ,  H03G3/3042 ,  H04B1/04

    Abstract: Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.

    Abstract translation: 本文公开了用于矢量组合功率放大的方法和系统。 在一个实施例中，多个信号被单独放大，然后相加以形成期望的时变复包络信号。 控制一个或多个信号的相位和/或频率特性以提供期望的时变复包络信号的期望的相位，频率和/或幅度特性。 在另一个实施例中，时变复包络信号被分解为多个恒定包络分量信号。 构成信号被均等地或基本相等地放大，然后相加以构建原始时变包络信号的放大版本。 实施例还执行上变频。

Patent Agency Ranking