公开(公告)号：US20170047899A1

公开(公告)日：2017-02-16

申请号：US15281900

申请日：2016-09-30

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Abdalla Ebrahim ABDELRAHMAN ,  Oualid HAMMI ,  Azzedine ZERGUINE

IPC: H03F1/32 ,  H03F3/21 ,  H03F3/19 ,  H03F1/02

CPC classification number: H03F1/3247 ,  H03F1/0205 ,  H03F1/3241 ,  H03F1/3258 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/451 ,  H03F2201/3224 ,  H03F2201/3231 ,  H04B1/0475 ,  H04B2001/0425

Abstract: A system and method for linearizing a power amplifier using digital predistortion technique is provided including processing circuitry, the processing circuitry configured to apply a digital predistortion function based on a weighted static polynomial function, a weighted dynamic polynomial function and a threshold parameter which splits the nonlinear transfer characteristics of the device under test into a region where the static nonlinearity predominates and a region where the dynamic distortions predominate.

Abstract translation: 提供了一种使用数字预失真技术线性化功率放大器的系统和方法，包括处理电路，所述处理电路被配置为基于加权静态多项式函数应用数字预失真函数，加权动态多项式函数和阈值参数，其分割非线性 将被测器件的传输特性转化为静态非线性占优势的区域以及动态失真占优势的区域。

公开(公告)号：US08952752B1

公开(公告)日：2015-02-10

申请号：US13712676

申请日：2012-12-12

Applicant: Steven E. Huettner

Inventor： Steven E. Huettner

IPC: H03F3/68 ,  H03F1/56

CPC classification number: H03F3/602 ,  H03F1/3241 ,  H03F2201/3231

Abstract: A power-combined amplifier and method are provided. In one aspect, the power-combined amplifier and method overcome problems associated with decreased output power efficiency caused by phase mismatch between constituent amplifiers.

Abstract translation: 提供了一种功率组合放大器和方法。 一方面，功率组合放大器和方法克服了由于组成放大器之间的相位失配引起的输出功率效率降低的问题。

公开(公告)号：US08018277B2

公开(公告)日：2011-09-13

申请号：US12860732

申请日：2010-08-20

Applicant: Serge Francois Drogi ,  Vikas Vinayak

Inventor： Serge Francois Drogi ,  Vikas Vinayak

IPC: H03G3/20

CPC classification number: H03F1/3247 ,  H03F1/0227 ,  H03F1/0238 ,  H03F1/56 ,  H03F3/19 ,  H03F2200/387 ,  H03F2200/78 ,  H03F2200/99 ,  H03F2201/3231

Abstract: A power amplifier controller circuit controls an adjustable impedance matching network at the output of a power amplifier to vary its load line to improve the efficiency of the RF PA. The PA controller circuit comprises an amplitude control loop that determines an amplitude correction signal. The amplitude loop is configured to control or correct for distortion from the adjustable matching network based upon the amplitude correction signal.

Abstract translation: 功率放大器控制器电路在功率放大器的输出端控制可调阻抗匹配网络，以改变其负载线，以提高RF PA的效率。 PA控制器电路包括确定幅度校正信号的幅度控制环路。 振幅环路被配置为基于幅度校正信号来控制或校正来自可调匹配网络的失真。

公开(公告)号：US20110043282A1

公开(公告)日：2011-02-24

申请号：US12860732

申请日：2010-08-20

Applicant: Serge Francois Drogi ,  Vikas Vinayak

Inventor： Serge Francois Drogi ,  Vikas Vinayak

IPC: H03G3/20

CPC classification number: H03F1/3247 ,  H03F1/0227 ,  H03F1/0238 ,  H03F1/56 ,  H03F3/19 ,  H03F2200/387 ,  H03F2200/78 ,  H03F2200/99 ,  H03F2201/3231

Abstract: A power amplifier controller circuit controls an adjustable impedance matching network at the output of a power amplifier to vary its load line to improve the efficiency of the RF PA. The PA controller circuit comprises an amplitude control loop that determines an amplitude correction signal. The amplitude loop is configured to control or correct for distortion from the adjustable matching network based upon the amplitude correction signal.

Abstract translation: 功率放大器控制器电路在功率放大器的输出端控制可调阻抗匹配网络，以改变其负载线，以提高RF PA的效率。 PA控制器电路包括确定幅度校正信号的幅度控制环路。 振幅环路被配置为基于幅度校正信号来控制或校正来自可调匹配网络的失真。

公开(公告)号：US07782134B2

公开(公告)日：2010-08-24

申请号：US12366568

申请日：2009-02-05

Applicant: Serge Francois Drogi ,  Vikas Vinayak

Inventor： Serge Francois Drogi ,  Vikas Vinayak

IPC: H03G3/20

CPC classification number: H03F3/19 ,  H03F1/0227 ,  H03F1/0238 ,  H03F1/3247 ,  H03F1/56 ,  H03F3/24 ,  H03F2200/387 ,  H03F2200/78 ,  H03F2200/99 ,  H03F2201/3231 ,  H04B1/0458

Abstract: A power amplifier controller circuit controls an adjustable impedance matching network at the output of a power amplifier to vary its load line to improve the efficiency of the RF PA. The PA controller circuit comprises an amplitude control loop that determines an amplitude correction signal. The amplitude loop is configured to control or correct for distortion from the adjustable matching network based upon the amplitude correction signal.

Abstract translation: 功率放大器控制器电路在功率放大器的输出端控制可调阻抗匹配网络，以改变其负载线，以提高RF PA的效率。 PA控制器电路包括确定幅度校正信号的幅度控制环路。 振幅环路被配置为基于幅度校正信号来控制或校正来自可调匹配网络的失真。

公开(公告)号：US20100060357A1

公开(公告)日：2010-03-11

申请号：US12366568

申请日：2009-02-05

Applicant: Serge Francois Drogi ,  Vikas Vinayak

Inventor： Serge Francois Drogi ,  Vikas Vinayak

IPC: H03F1/00

CPC classification number: H03F3/19 ,  H03F1/0227 ,  H03F1/0238 ,  H03F1/3247 ,  H03F1/56 ,  H03F3/24 ,  H03F2200/387 ,  H03F2200/78 ,  H03F2200/99 ,  H03F2201/3231 ,  H04B1/0458

Abstract: A power amplifier controller circuit controls an adjustable impedance matching network at the output of a power amplifier to vary its load line to improve the efficiency of the RF PA. The PA controller circuit comprises an amplitude control loop that determines an amplitude correction signal. The amplitude loop is configured to control or correct for distortion from the adjustable matching network based upon the amplitude correction signal.

Abstract translation: 功率放大器控制器电路在功率放大器的输出端控制可调阻抗匹配网络，以改变其负载线，以提高RF PA的效率。 PA控制器电路包括确定幅度校正信号的幅度控制环路。 振幅环路被配置为基于幅度校正信号来控制或校正来自可调匹配网络的失真。

公开(公告)号：US07639755B2

公开(公告)日：2009-12-29

申请号：US10951040

申请日：2004-09-22

Applicant: Hiroyoshi Ishikawa ,  Tokuro Kubo ,  Kazuo Nagatani ,  Yasuyuki Oishi ,  Hajime Hamada ,  Nobukazu Fudaba ,  Toru Maniwa ,  Hiroyuki Hayashi

Inventor： Hiroyoshi Ishikawa ,  Tokuro Kubo ,  Kazuo Nagatani ,  Yasuyuki Oishi ,  Hajime Hamada ,  Nobukazu Fudaba ,  Toru Maniwa ,  Hiroyuki Hayashi

IPC: H04K1/02

CPC classification number: H03F1/3247 ,  H03F2201/3231 ,  H03F2201/3233

Abstract: A distortion compensating apparatus calculates a distortion compensation coefficient in such a manner that a difference signal between a reference signal, which is a transmit signal, and a feedback signal will be diminished, updates an old distortion compensation coefficient by the calculated distortion compensation coefficient and applies distortion compensation to the transmit signal based upon this distortion compensation coefficient. In this apparatus, a phase correcting interval, which is for correcting the phase difference between the reference signal and the feedback signal, and a distortion compensation coefficient updating interval are generated alternately, a correction is applied so as to null the phase difference in the phase correcting interval, and the distortion compensation coefficient is updated in the distortion compensation coefficient updating interval.

Abstract translation: 失真补偿装置以这样的方式来计算失真补偿系数，使得作为发送信号的参考信号与反馈信号之间的差信号将被减小，通过计算出的失真补偿系数来更新旧的失真补偿系数并应用 基于该失真补偿系数对发送信号进行失真补偿。 在该装置中，交替地产生用于校正参考信号和反馈信号之间的相位差的相位校正间隔和失真补偿系数更新间隔，进行校正，以使相位中的相位差无效 在失真补偿系数更新间隔中更新失真补偿系数。

公开(公告)号：US20090117865A1

公开(公告)日：2009-05-07

申请号：US11935614

申请日：2007-11-06

Applicant: Vikas Vinayak ,  Serge Francois Drogi ,  Martin Tomasz

Inventor： Vikas Vinayak ,  Serge Francois Drogi ,  Martin Tomasz

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/0227 ,  H03F1/0238 ,  H03F1/0244 ,  H03F1/3247 ,  H03F2200/102 ,  H03F2200/336 ,  H03F2201/3231

Abstract: A radio frequency (RF) power amplifier system is provided, in which a distortion of the RF output signal from the power amplifier is estimated by comparing the RF output signal with reference modulation information. The supply voltage to the power amplifier is adjusted so that the estimated distortion of the RF output signal corresponds to a predetermined distortion level. The predetermined distortion level is set to represent an acceptable distortion level at the RF output signal.

Abstract translation: 提供射频（RF）功率放大器系统，其中通过将RF输出信号与参考调制信息进行比较来估计来自功率放大器的RF输出信号的失真。 对功率放大器的电源电压进行调整，使得RF输出信号的估计失真对应于预定的失真水平。 预定的失真电平被设置为表示RF输出信号处的可接受的失真电平。

公开(公告)号：US06831954B1

公开(公告)日：2004-12-14

申请号：US09496120

申请日：2000-02-01

Applicant: Giridhar D. Mandyam

Inventor： Giridhar D. Mandyam

IPC: H04L2534

CPC classification number: H03F1/3294 ,  H03F2201/3231 ,  H04L27/368

Abstract: Apparatus, and an associated method, by which to predistort a send signal prior to its application to a power amplifier. Predistortion compensates for distortion introduced upon the signal during its amplification by the power amplifier. Compensation is effectuated by altering a phase component of symbols of which the signal is formed without affecting the magnitude components thereof.

Abstract translation: 装置和相关联的方法，通过该方法在发送信号应用于功率放大器之前预先发送发送信号。 预失真补偿功率放大器放大期间信号引入的失真。 通过改变形成信号的符号的相位分量而不影响其幅度分量来实现补偿。

公开(公告)号：US5450043A

公开(公告)日：1995-09-12

申请号：US222115

申请日：1994-04-01

Applicant: Yasuhide Tanaka ,  Masaho Kimura

Inventor： Yasuhide Tanaka ,  Masaho Kimura

IPC: H04L27/20 ,  H03C3/40 ,  H03F1/32 ,  H03C1/06 ,  H03C3/08 ,  H04B1/04

CPC classification number: H03C3/40 ,  H03F1/3247 ,  H03F1/3282 ,  H03F1/3294 ,  H03C2200/0058 ,  H03F2201/3231

Abstract: A quadrature modulator multiplies two carriers which are 90.degree. out of phase with each other by a sine component and a cosine component of a baseband signal, respectively, adds the product signals to each other, and amplifies the sum signal to produce a quadrature-modulated output signal. The quadrature modulator includes a phase comparator for detecting a phase distortion suffered when the sum signal is amplified, a first phase controller for correcting the phase of a single carrier generated by a carrier oscillator based on a compared phase output signal from the phase comparator, a phase difference detector for detecting the difference between 90.degree. and the phase difference between the two carriers, and a second phase controller for outputting the two carriers to be multiplied by the sine and cosine components of the baseband signal and controlling the phase difference between the two carriers generated from the single carrier whose phase distortion has been corrected by the first phase controller, into 90.degree. based on a detected output signal from the phase difference detector.

Abstract translation: 正交调制器将基带信号的正弦分量和余弦分量彼此相差90°的两个载波相乘，将乘积信号彼此相加，并且放大和信号以产生正交调制 输出信号。 正交调制器包括：相位比较器，用于检测和信号放大时遭受的相位失真;第一相位控制器，用于基于来自相位比较器的比较相位输出信号校正由载波振荡器产生的单载波的相位; 用于检测90°与两个载波之间的相位差的相位差检测器，以及用于输出要乘以基带信号的正弦和余弦分量的两个载波的第二相位控制器，并且控制两个载波之间的相位差 基于来自相位差检测器的检测出的输出信号，由相位失真由第一相位控制器校正的单载波产生的载波为90°。