公开(公告)号：US20120106600A1

公开(公告)日：2012-05-03

申请号：US12939067

申请日：2010-11-03

申请人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

发明人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

IPC分类号： H04B1/38 ,  H04L25/03 ,  H03F1/26

CPC分类号： H03F1/3241 ,  H03F3/19 ,  H03F2201/3224 ,  H04B2001/0425

摘要： RF predistortion apparatus for making linear the output signal of non-linear components such as RF power amplifiers. The apparatus comprises an RF input line for carrying an RF signal connected to an envelop detector for finding the envelop of the RF signal, a power detector for finding the power of the RF signal and a quadrature modulator. The apparatus also comprises a coefficient vector input line for carrying an input signal that carries one or more coefficients to a digitally controlled analog subsystem (DCAS). The DCAS having circuitry for processing both the output of the envelop detector and the output of the power detector by selecting one or more coefficients from the coefficient vector input line for generating a weighted summation of the power of the RF signal and a weighted summation of the envelop voltage of the RF signal that are output to the quadrature modulator. The quadrature modulator has circuitry for mixing the RF input signal with the output of the DCAS to generate a signal for predistorting the RF input signal feeding the power amplifier.

摘要翻译： 射频预失真装置，用于对诸如RF功率放大器之类的非线性分量的输出信号进行线性化。 该装置包括用于承载连接到包络检测器的RF信号用于找到RF信号的包络的RF输入线，用于找到RF信号的功率的功率检测器和正交调制器。 该装置还包括一个用于承载一个或多个系数到数字控制的模拟子系统（DCAS）的输入信号的系数向量输入线。 DCAS具有用于通过从系数向量输入线中选择一个或多个系数来处理包络检测器的输出和功率检测器的输出的电路，用于产生RF信号的功率的加权求和和 输出到正交调制器的RF信号的包络电压。 正交调制器具有用于将RF输入信号与DCAS的输出混合以产生用于预失真馈送功率放大器的RF输入信号的信号的电路。

公开(公告)号：US08331487B2

公开(公告)日：2012-12-11

申请号：US12939067

申请日：2010-11-03

申请人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

发明人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

IPC分类号： H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC分类号： H03F1/3241 ,  H03F3/19 ,  H03F2201/3224 ,  H04B2001/0425

摘要： RF predistortion apparatus for making linear the output signal of non-linear components such as RF power amplifiers. The apparatus comprises an RF input line for carrying an RF signal connected to an envelope detector for finding the envelope of the RF signal, a power detector for finding the power of the RF signal and a quadrature modulator. The apparatus also comprises a coefficient vector input line for carrying an input signal that carries one or more coefficients to a digitally controlled analog subsystem (DCAS). The DCAS having circuitry for processing both the output of the envelope detector and the output of the power detector by selecting one or more coefficients from the coefficient vector input line for generating a weighted summation of the power of the RF signal and a weighted summation of the envelope voltage of the RF signal that are output to the quadrature modulator. The quadrature modulator has circuitry for mixing the RF input signal with the output of the DCAS to generate a signal for predistorting the RF input signal feeding the power amplifier.

摘要翻译： 射频预失真装置，用于对诸如RF功率放大器之类的非线性分量的输出信号进行线性化。 该装置包括用于携带连接到包络检测器的RF信号的RF输入线，用于找到RF信号的包络，用于找到RF信号的功率的功率检测器和正交调制器。 该装置还包括一个用于承载一个或多个系数到数字控制的模拟子系统（DCAS）的输入信号的系数向量输入线。 DCAS具有用于通过从系数向量输入线中选择一个或多个系数来处理包络检测器的输出和功率检测器的输出的电路，用于产生RF信号的功率的加权求和和 输出到正交调制器的RF信号的包络电压。 正交调制器具有用于将RF输入信号与DCAS的输出混合以产生用于预失真馈送功率放大器的RF输入信号的信号的电路。

公开(公告)号：US08295394B1

公开(公告)日：2012-10-23

申请号：US12257292

申请日：2008-10-23

申请人： Adric Q. Broadwell ,  Armando C. Cova ,  Frederic Roger ,  Qian Yu

发明人： Adric Q. Broadwell ,  Armando C. Cova ,  Frederic Roger ,  Qian Yu

IPC分类号： H04K1/02

CPC分类号： H03F1/3247 ,  H03F2201/3224

摘要： A performance monitor for generating a digital error signal based upon an RF input signal and an amplified RF output signal is provided. The monitor includes: a first analog-to-digital converter operable to digitize an in-phase (I) and a quadrature-phase (Q) version of the RF input signal responsive to a first clock signal to provide a first digital I signal and a first digital Q signal; a second analog-to-digital converter operable to digitize an in-phase (I) and a quadrature-phase version of the amplified RF output signal responsive to a second clock signal to provide a second digital I signal and a second digital Q signal; a first adaptive delay filter to delay the first digital I signal and the first digital Q signal to provide a first delayed complex signal according to a first delay; a second adaptive filter to delay the second digital I signal and the second digital Q signals to provide a second delayed complex signal according to a second delay; a complex gain matching adder operable to add a complex gain matching factor to a selected one of the delayed complex signals to provide a gain matched complex signal; and an adder to add the gain matched complex signal to a remaining one of the first and second delayed complex signals to provide the digital error signal.

摘要翻译： 提供了一种用于基于RF输入信号和放大的RF输出信号产生数字误差信号的性能监视器。 监视器包括：第一模数转换器，用于响应于第一时钟信号数字化RF输入信号的同相（I）和正交相位（Q）版本，以提供第一数字I信号和 第一数字Q信号; 第二模数转换器，用于响应于第二时钟信号数字化放大的RF输出信号的同相（I）和正交相位版本，以提供第二数字I信号和第二数字Q信号; 第一自适应延迟滤波器，用于延迟第一数字I信号和第一数字Q信号，以根据第一延迟提供第一延迟复信号; 第二自适应滤波器，用于延迟所述第二数字I信号和所述第二数字Q信号，以根据第二延迟提供第二延迟复信号; 复增益匹配加法器，用于将复增益匹配因子添加到所选延迟复信号中的一个以提供增益匹配复信号; 以及加法器，用于将增益匹配复信号与第一和第二延迟复数信号中的剩余的一个相加，以提供数字误差信号。