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25 条记录 (耗时 0.02 秒)

    High Efficiency Amplifier
    1.
    发明申请
    High Efficiency Amplifier 审中-公开
    高效放大器

    公开(公告)号：US20140070883A1

    公开(公告)日：2014-03-13

    申请号：US13690778

    申请日：2012-11-30

    申请人： Mark Gurvich ,  JianQing He

    发明人： Mark Gurvich ,  JianQing He

    IPC分类号： H03F3/60

    CPC分类号： H03F3/60 ,  H03F1/0288 ,  H03F3/602 ,  H03F2200/405

    摘要： High efficiency Doherty amplifiers are described. Contemplated Doherty amplifiers can include an input hybrid coupler having first and second inputs, and first and second drivers that individually drive respective first and second inputs. In this manner, the driver output power to the main and auxiliary amplifiers can be dynamically controlled as a function of an input signal's envelope. This advantageously allows for a substantial decrease in the amount of power wasted by the driver, especially when used with digitally modulated signals.

    摘要翻译： 描述了高效率Doherty放大器。 考虑的Doherty放大器可以包括具有第一和第二输入的输入混合耦合器，以及分别驱动相应的第一和第二输入的第一和第二驱动器。 以这种方式，驱动器对主放大器和辅助放大器的输出功率可以根据输入信号的包络被动态地控制。 这有利地允许驱动器浪费的功率量的显着减少，特别是当与数字调制信号一起使用时。

    Constant gain nonlinear envelope tracking high efficiency linear amplifier
    3.
    发明授权
    Constant gain nonlinear envelope tracking high efficiency linear amplifier 有权
    恒定增益非线性包络跟踪高效线性放大器

    公开(公告)号：US07440733B2

    公开(公告)日：2008-10-21

    申请号：US11087225

    申请日：2005-03-23

    申请人： Nikolai Maslennikov ,  Mark Gurvich ,  Alexander Rabinovich

    发明人： Nikolai Maslennikov ,  Mark Gurvich ,  Alexander Rabinovich

    IPC分类号： H04B1/04 ,  H04Q7/20

    CPC分类号： H03F1/0227 ,  H03F1/02 ,  H03F1/32 ,  H03F3/24 ,  H03F2200/102 ,  H03G3/004 ,  H04B1/0483 ,  H04B2001/045

    摘要： An envelope tracking radio frequency (RF) power amplifier having an adaptive envelope signal processing circuit is disclosed. An RF input voltage is sampled by the adaptive envelope signal processing circuit which provides control signals to the power supply which supplies voltages to RF power devices in order to simultaneously satisfy two operating conditions: a) provide best possible efficiency of the power amplifier stages depending on the input signal characteristics and b) provide compensation for RF transistor AM-AM and AM-PM distortion compensation across the power range. In particular, the voltage control provides for constant power amplifier gain across the input signal dynamic range, thus minimizing power amplifier amplitude distortions and extending the useful power amplifier linear dynamic range up to saturation point. The power amplifier thus exhibits better linearity and efficiency than offered by conventional techniques and topologies.

    摘要翻译： 公开了具有自适应包络信号处理电路的包络跟踪射频（RF）功率放大器。 RF输入电压由自适应包络信号处理电路采样，该电路向向RF功率器件提供电压的电源提供控制信号，以便同时满足两个工作条件：a）提供功率放大器级的最佳可能效率，这取决于 输入信号特性和b）在功率范围内为射频晶体管AM-AM和AM-PM失真补偿提供补偿。 特别地，电压控制在输入信号动态范围内提供恒定的功率放大器增益，从而最小化功率放大器幅度失真并将有用的功率放大器线性动态范围扩展到饱和点。 因此，功率放大器比常规技术和拓扑结构提供更好的线性度和效率。

    Microstrip coupler
    5.
    发明授权
    Microstrip coupler 失效

    公开(公告)号：US06952147B2

    公开(公告)日：2005-10-04

    申请号：US10738276

    申请日：2003-12-16

    申请人： Mark Gurvich ,  Alex Rabinovich ,  Jianqing He

    发明人： Mark Gurvich ,  Alex Rabinovich ,  Jianqing He

    IPC分类号： H01P5/18

    CPC分类号： H01P5/185

    摘要： A microstrip coupler is provided which includes an controlled capacitance bridge for improved directivity as compared to prior art controlled capacitance bridges. The novel controlled capacitance bridge provides the functionality of prior art wire or ribbon controlled capacitance bridges and also provides the necessary capacitance to compensate for the different phase velocities of odd and even modes in the transmission lines. Both the dimensions of the controlled capacitance bridge and the dimensions of an input microstrip conductor may be adjusted to provide the appropriate level of capacitance. In some embodiments, the controlled capacitance bridge connects segments of an input microstrip conductor. In other embodiments, the controlled capacitance bridge connects microstrip conductors which are configured to couple an input signal from an input microstrip conductor.

    System and method of pilot tone reuse in a feedforward amplifier
    6.
    发明授权
    System and method of pilot tone reuse in a feedforward amplifier 有权
    前馈放大器中导频音复用的系统和方法

    公开(公告)号：US06946906B2

    公开(公告)日：2005-09-20

    申请号：US10723094

    申请日：2003-11-25

    申请人： Alex Rabinovich ,  Mark Gurvich ,  Jianqing He

    发明人： Alex Rabinovich ,  Mark Gurvich ,  Jianqing He

    IPC分类号： H03F1/26 ,  H03F1/32 ,  H03F3/66

    CPC分类号： H03F1/3235 ,  H03F1/32

    摘要： A system and method of pilot tone reuse. The present invention therefore provides a feedforward amplifier, comprising: an input that accepts a radio frequency signal having multiple carriers; a first control loop including a main amplifier block and a detector, wherein the first control loop generates a first carrier cancelled signal; a second control loop including a pilot generator, I/Q demodulator, vector modulator and first error amplifier block, wherein the pilot generator, I/Q demodulator and first error amplifier block amplify the first carrier cancelled signal and generates a pilot signal; a third control loop comprising a vector modulator and a second carrier cancellation detector; and a fourth control loop comprising of vector modulator, a second error amplifier block, and a pilot signal receiver for receiving the pilot signal generated by the pilot generator in the second error amplifier block such that the pilot signal is reused by the fourth control loop to thereby further cancel intermodulation distortion in the output of the main amplifier block.

    摘要翻译： 导频音复用的系统和方法。 因此，本发明提供一种前馈放大器，包括：接收具有多个载波的射频信号的输入; 包括主放大器块和检测器的第一控制回路，其中所述第一控制回路产生第一载波消除信号; 包括导频发生器，I / Q解调器，矢量调制器和第一误差放大器块的第二控制环路，其中导频发生器，I / Q解调器和第一误差放大器模块放大第一载波消除信号并产生导频信号; 第三控制回路，包括矢量调制器和第二载波消除检测器; 以及包括矢量调制器，第二误差放大器块和导频信号接收器的第四控制环路，用于接收由第二误差放大器模块中的导频发生器产生的导频信号，使得导频信号被第四控制环路再利用 从而进一步消除主放大器块的输出中的互调失真。

    System and method of carrier reinjection in a feedforward amplifier
    7.
    发明申请
    System and method of carrier reinjection in a feedforward amplifier 有权
    前馈放大器中载波回注的系统和方法

    公开(公告)号：US20050113052A1

    公开(公告)日：2005-05-26

    申请号：US10723802

    申请日：2003-11-25

    申请人： Alex Rabinovich ,  Mark Gurvich ,  Jianqing He

    发明人： Alex Rabinovich ,  Mark Gurvich ,  Jianqing He

    IPC分类号： H03F1/32 ,  H04B1/04 ,  H04B1/16

    CPC分类号： H03F1/32 ,  H03F1/3223 ,  H03F1/3229 ,  H03F1/3235 ,  H03F3/24 ,  H04B2001/0441

    摘要： A dual loop feedforward power amplifier. A dual loop feedforward power amplifier, comprising an input that provides a multicarrier signal; a first feedforward power amplifier; and a second feedforward power amplifier, wherein the first feedforward power amplifier serves as a main amplifier gain block in the second feedforward power amplifier, wherein the first feedforward power amplifier comprises a carrier cancellation loop and a first error amplifier loop, and wherein the second feedforward power amplifier comprises a third loop and a fourth loop that cancel small signal distortions that are not reduced by the first feedforward amplifier.

    摘要翻译： 双环前馈功率放大器。 一种双环前馈功率放大器，包括提供多载波信号的输入; 第一前馈功率放大器; 以及第二前馈功率放大器，其中所述第一前馈功率放大器用作所述第二前馈功率放大器中的主放大器增益块，其中所述第一前馈功率放大器包括载波消除环路和第一误差放大器环路，并且其中所述第二前馈功率放大器 功率放大器包括消除由第一前馈放大器未减小的小信号失真的第三环路和第四环路。

    Fast forward RF power amplifier with high efficiency main amplifier and highly linear error amplifier
    8.
    发明授权
    Fast forward RF power amplifier with high efficiency main amplifier and highly linear error amplifier 有权
    具有高效率主放大器和高线性误差放大器的快进RF功率放大器

    公开(公告)号：US06794933B2

    公开(公告)日：2004-09-21

    申请号：US10365111

    申请日：2003-02-12

    申请人： Mark Gurvich ,  Ezmarai Arbab ,  Bill Vassilakis

    发明人： Mark Gurvich ,  Ezmarai Arbab ,  Bill Vassilakis

    IPC分类号： H03F366

    CPC分类号： H03F1/3235

    摘要： A feed forward RF power amplifier which provides both high efficiency and minimal distortion in broad bandwidth RF applications. The feed forward power amplifier includes a main amplifier biased to provide high efficiency and an error amplifier biased to provide highly linear operation through substantially the entire operating range. Signal peaks which introduce distortion components at the main amplifier output are cancelled by the linear operation of the error amplifier.

    摘要翻译： 前馈射频功率放大器，可在宽带宽RF应用中提供高效率和最小失真。 前馈功率放大器包括偏置以提供高效率的主放大器和偏置的误差放大器，以在基本上整个工作范围内提供高度线性的操作。 在主放大器输出处引入失真分量的信号峰值被误差放大器的线性运算所抵消。