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    Method and apparatus using base band transformation to improve transmitter performance
    1.
    发明授权
    Method and apparatus using base band transformation to improve transmitter performance 有权
    使用基带变换的方法和装置来改善发射机性能

    公开(公告)号：US06983026B2

    公开(公告)日：2006-01-03

    申请号：US10101903

    申请日：2002-03-19

    申请人： Danny Thomas Pinckley ,  Sean Michael McBeath

    发明人： Danny Thomas Pinckley ,  Sean Michael McBeath

    IPC分类号： H04L25/03

    CPC分类号： H03F1/3252 ,  H03F1/3294 ,  H04B1/0483

    摘要： An apparatus for processing base band signals and method thereof to provide low level signals for amplification that will improve performance of a multi-channel transmitter. The apparatus includes a first Transform Matrix (TM) coupled to one or more input signals; a processing unit coupled to the output signals for modifying according to a predetermined algorithm each of the output signals to provide modified output signals; a second TM coupled to the modified output signals for decomposing the modified signals, each of the output base band signals corresponding to one of the input signals; and a compensation function arranged and inter-coupled to either the modified output signals or the output base band signals. The transmitter further converts the output base band signals to radio frequency signals. A sampler couples either the amplifier input signal or output signal back to the compensation function as a feedback signal.

    摘要翻译： 一种用于处理基带信号的装置及其方法，以提供用于放大的低电平信号，其将改善多信道发射机的性能。 该装置包括耦合到一个或多个输入信号的第一变换矩阵TM; 耦合到所述输出信号的处理单元，用于根据预定算法修改每个所述输出信号以提供修改的输出信号; 耦合到所述修改的输出信号以分解所述修改的信号的第二TM，所述输出基带信号中的每一个对应于所述输入信号之一; 以及补偿功能，其布置和互连到修改的输出信号或输出基带信号。 发射机还将输出基带信号转换为射频信号。 采样器将放大器输入信号或输出信号反馈到补偿功能作为反馈信号。

    Method and apparatus for processing a digital signal for analog transmission
    4.
    发明授权
    Method and apparatus for processing a digital signal for analog transmission 有权
    用于处理模拟传输的数字信号的方法和装置

    公开(公告)号：US06215430B1

    公开(公告)日：2001-04-10

    申请号：US09298541

    申请日：1999-04-24

    申请人： Paul Fielding Smith ,  Kevin Michael Laird ,  Danny Thomas Pinckley

    发明人： Paul Fielding Smith ,  Kevin Michael Laird ,  Danny Thomas Pinckley

    IPC分类号： H03M166

    CPC分类号： H03D7/00

    摘要： In a digital preprocessing system for processing a digital signal for analog transmission, the digital signal is up-sampled to produce a digital up-sampled signal having signal components in a plurality of Nyquist bands including a first Nyquist band and a plurality of super-Nyquist bands at higher frequencies than the first Nyquist band, wherein the first Nyquist band includes a baseband signal component and a plurality of aliased signal components. Thereafter, one of the plurality of signal components in the first Nyquist band is selected from the digital up-sampled signal. Finally, the selected one of the plurality of signal components is output at a frequency that will cause a digital to analog converter to output an aliased signal component in a super-Nyquist band nearer an anticipated peak amplitude of a filtering characteristic of the digital to analog converter than an aliased signal component in the super-Nyquist band that would be output by the digital to analog converter processing the baseband signal component.

    摘要翻译： 在用于处理用于模拟传输的数字信号的数字预处理系统中，数字信号被上采样以产生具有包括第一奈奎斯特频带和多个超奈奎斯特频带的多个奈奎斯特频带中的信号分量的数字上采样信号 频带高于第一奈奎斯特频带，其中第一奈奎斯特频带包括基带信号分量和多个混叠信号分量。 此后，从数字上采样信号中选择第一奈奎斯特带中的多个信号分量之一。 最后，多个信号分量中所选择的一个信号分量以使得数模转换器在数字到​​模拟滤波器的滤波特性的预期峰值幅度更接近的超奈奎斯特频带中输出混叠信号分量的频率输出 转换器比由奈奎斯特带内的混叠信号分量由数模转换器输出，处理基带信号分量。

    Method and apparatus for controlling a peak envelope power of a power amplifier
    5.
    发明授权
    Method and apparatus for controlling a peak envelope power of a power amplifier 失效
    用于控制功率放大器的峰值包络功率的方法和装置

    公开(公告)号：US5854571A

    公开(公告)日：1998-12-29

    申请号：US144931

    申请日：1993-10-28

    申请人： Danny Thomas Pinckley ,  Kevin Michayl Laird ,  Charles N. Lynk, Jr.

    发明人： Danny Thomas Pinckley ,  Kevin Michayl Laird ,  Charles N. Lynk, Jr.

    IPC分类号： H03G3/20 ,  H03F1/32 ,  H03G3/30 ,  H04B1/02 ,  H04B1/04

    CPC分类号： H03G3/3042 ,  H03G3/3047

    摘要： An apparatus and method of reducing a peak envelope power of a linear power amplifier (10) amplifying a plurality of channels is provided. The method includes the steps of measuring (104) the peak envelope power of the linear power amplifier, measuring a channel activity level (101) of each channel of the plurality of channels, and, when the peak envelope power exceeds a first threshold, changing (103, 106) at least one parameter of a channel of the plurality of channels having a channel activity level exceeding a second threshold to reduce the peak envelope power.

    摘要翻译： 提供了一种降低放大多个通道的线性功率放大器（10）的峰值包络功率的装置和方法。 该方法包括以下步骤：测量（104）线性功率放大器的峰值包络功率，测量多个信道中的每个信道的信道活动水平（101），并且当峰值包络功率超过第一阈值时，改变 （103,106），所述多个通道的通道的至少一个参数具有超过第二阈值的通道活动水平以减小峰值包络功率。

    Postdistortion amplifier with predistorted postdistortion
    6.
    发明授权
    Postdistortion amplifier with predistorted postdistortion 有权
    具有预失真后失真的后失真放大器

    公开(公告)号：US07333561B2

    公开(公告)日：2008-02-19

    申请号：US10185229

    申请日：2002-06-28

    申请人： Danny Thomas Pinckley ,  Sean Michael McBeath

    发明人： Danny Thomas Pinckley ,  Sean Michael McBeath

    IPC分类号： H04K1/02

    CPC分类号： H03F1/3223 ,  H03F1/3294 ,  H03F2201/3221

    摘要： A postdistortion amplifier that produces a postdistortion amplifier output signal based on a signal input to the postdistortion amplifier reduces distortion in the postdistortion amplifier output signal by digitally predistorting an error signal. The postdistortion amplifier includes a digital predistortion unit that receives a digital error signal and produces a digital predistorted error signal based on the received digital error signal and by reference to a predistorted error signal model.

    摘要翻译： 产生基于输入到失配失真放大器的信号的后失真放大器输出信号的后失真放大器通过数字预失真误差信号来减少后失真放大器输出信号中的失真。 后失真放大器包括数字预失真单元，其接收数字误差信号并且基于接收到的数字误差信号并参考预失真误差信号模型产生数字预失真误差信号。