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1.发明授权Analog signal processor for nonlinear predistortion of radio-frequency signals 有权用于射频信号非线性预失真的模拟信号处理器公开(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
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。
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2.发明申请ANALOG SIGNAL PROCESSOR FOR NONLINEAR PREDISTORTION OF RADIO-FREQUENCY SIGNALS 有权用于非线性频率信号非线性预测的模拟信号处理器公开(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
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。
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公开(公告)号：US20130049841A1
公开(公告)日：2013-02-28
申请号：US13220480
申请日：2011-08-29
申请人： Frédéric Roger
发明人： Frédéric Roger
IPC分类号： G06F7/64
摘要： Systems and methods are provided for power measurement of signals such that the power measurement is insensitive to PVT variations of the measurement systems. A power measurement system includes an analog squarer circuitry, an integrating ADC, and a controller. The squarer circuitry calculates the power of a signal whose power is to be measured while the integrating ADC integrates the calculated power over a runup interval to generate an integrated power. The squarer circuitry also calculates the power of a reference for the integrating ADC to de-integrate the integrated power over a rundown interval. The power measurements are independent of PVT variations of the analog squarer circuitry and integrating ADC. The controller digitally controls the runup interval and measures the rundown interval to provide digitized power measurements. The analog squarer circuitry have replica squarer circuits. Process dependent mismatches between the replica analog circuitry may be removed through a calibration process.
摘要翻译： 提供系统和方法用于信号的功率测量，使得功率测量对测量系统的PVT变化不敏感。 功率测量系统包括模拟平方电路，积分ADC和控制器。 平方电路计算其功率要被测量的信号的功率，而积分ADC通过运行间隔积分计算出的功率以产生积分功率。 平方电路还计算积分ADC的参考功率，以在整个时间间隔内对积分功率进行去积分。 功率测量与模拟平方电路和积分ADC的PVT变化无关。 控制器以数字方式控制延时间隔，并测量故障间隔以提供数字化功率测量。 模拟平方电路具有复制平方电路。 可以通过校准过程去除复制模拟电路之间的过程相关的不匹配。
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公开(公告)号：US06995700B2
公开(公告)日：2006-02-07
申请号：US10493298
申请日：2002-07-18
IPC分类号： H03M1/66
CPC分类号： H03M1/68
摘要： A digital/analog converter apparatus (DAC) comprises, for the purpose of converting a digital input signal (D) into an analog output signal (A), a first unit (F1, F2), two digital/analog converters (DAC1, DAC2) and a second unit (K1, K2), which are connected successively in the stated order. From the digital input signal (D), digital intermediate signals (D1, D2) which are within the analog output signal (A) is obtained through linear combination.
摘要翻译： 为了将数字输入信号（D）转换为模拟输出信号（A），数字/模拟转换装置（DAC）包括第一单元（F 1，F 2），两个数/模转换器 1，DAC 2）和第二单元（K 1，K 2），其按照所述顺序连续连接。 从数字输入信号（D），通过线性组合获得在模拟输出信号（A）内的数字中间信号（D 1，D 2）。
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