BR9904247A - Sistema de controle que reduz distorção produzida por circuitos elétricos - Google Patents

Sistema de controle que reduz distorção produzida por circuitos elétricos

Info

Publication number
BR9904247A
BR9904247A BR9904247-9A BR9904247A BR9904247A BR 9904247 A BR9904247 A BR 9904247A BR 9904247 A BR9904247 A BR 9904247A BR 9904247 A BR9904247 A BR 9904247A
Authority
BR
Brazil
Prior art keywords
control system
electrical circuits
distortion produced
reduces distortion
distortion
Prior art date
Application number
BR9904247-9A
Other languages
English (en)
Inventor
Robert Evan Myer
Original Assignee
Lucent Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of BR9904247A publication Critical patent/BR9904247A/pt

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/26—Automatic controllers electric in which the output signal is a pulse-train
    • G05B11/30—Automatic controllers electric in which the output signal is a pulse-train using pulse-frequency modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H03F1/3229—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction
    • H03F1/3235—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction using a pilot signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3212—Using a control circuit to adjust amplitude and phase of a signal in a signal path

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Noise Elimination (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

<B>SISTEMA DE CONTROLE QUE REDUZ DISTORçãO PRODUZIDA POR CIRCUITOS ELéTRICOS<D> Um sistema de controle que compreende um circuito elétrico que produz distorção, em que o circuito elétrico tem uma faixa de freq³ências de operação. Sinais pilotos de faixa lateral dupla estão localizados ligeiramente fora dos limites da faixa de freq³ências de operação, de modo a não interferir com quaisquer sinais dentro da faixa de freq³ências de operação, mas ainda fornecer informações que o sistema de controle utiliza para cancelar substancialmente a distorção.
BR9904247-9A 1998-09-29 1999-09-20 Sistema de controle que reduz distorção produzida por circuitos elétricos BR9904247A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/162,553 US6157254A (en) 1998-09-29 1998-09-29 Double side band pilot technique for a control system that reduces distortion produced by electrical circuits

Publications (1)

Publication Number Publication Date
BR9904247A true BR9904247A (pt) 2001-01-16

Family

ID=22586123

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9904247-9A BR9904247A (pt) 1998-09-29 1999-09-20 Sistema de controle que reduz distorção produzida por circuitos elétricos

Country Status (9)

Country Link
US (1) US6157254A (pt)
EP (1) EP0991210B1 (pt)
JP (1) JP4209051B2 (pt)
KR (1) KR100719779B1 (pt)
CN (1) CN1116736C (pt)
AU (1) AU764149B2 (pt)
BR (1) BR9904247A (pt)
CA (1) CA2279444C (pt)
DE (1) DE69941660D1 (pt)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6411644B1 (en) * 1998-09-29 2002-06-25 Lucent Technologies Inc. Frequency hop pilot technique for a control system that reduces distortion produced by electrical circuits
JP3533351B2 (ja) * 1999-12-28 2004-05-31 日本無線株式会社 フィードフォワード増幅器及びその制御回路
US6320461B1 (en) * 2000-05-12 2001-11-20 Jhong Sam Lee Ultra-linear feedforward RF power amplifier
JP2002101138A (ja) * 2000-09-26 2002-04-05 Toshiba Corp フィードフォワード型リニアライザ
US6525603B1 (en) * 2001-01-05 2003-02-25 Remec, Inc. Feedforward amplifier linearization adapting off modulation
US7436900B2 (en) * 2001-03-28 2008-10-14 Lucent Technologies Inc. Intermodulation distortion identification and quantization circuit for a linear amplifier system
WO2003003569A1 (en) * 2001-06-29 2003-01-09 Remec, Inc. Balanced distortion reduction circuit
EP1289128B1 (en) * 2001-08-21 2010-11-10 Panasonic Corporation Feedforward amplifier, feedforward amplification method
US6919764B2 (en) * 2003-03-11 2005-07-19 Andrew Corporation Amplifier control system with statistical enhancement of resolution of digital control signals
JP4431325B2 (ja) * 2003-05-26 2010-03-10 株式会社日立国際電気 増幅装置
KR20080052085A (ko) * 2006-12-07 2008-06-11 한국전자통신연구원 크기 차동 위상 편이 변조 장치 및 그 방법
CN101145860B (zh) * 2007-07-06 2010-09-08 哈尔滨工程大学 实时校正信道相位幅度的装置
FR2924542B1 (fr) 2007-11-29 2010-01-01 Lpa Concepts Amplificateur hf large bande comportant un systeme de reduction de distorsion et procede de reduction de distorsion associe
JP5593609B2 (ja) * 2008-12-23 2014-09-24 日本電気株式会社 歪補償回路と歪補償方法と通信装置
JP6280697B2 (ja) * 2013-05-27 2018-02-14 サイプレス セミコンダクター コーポレーション パワーアンプ装置及びその補償方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2945451B2 (ja) * 1990-07-25 1999-09-06 日本電信電話株式会社 フィードフォワード増幅器
JP3171924B2 (ja) * 1992-05-28 2001-06-04 富士通株式会社 フィードフォワード増幅器
JP3367745B2 (ja) * 1994-04-05 2003-01-20 株式会社東芝 歪補償器
JPH0856126A (ja) * 1994-08-10 1996-02-27 Kokusai Electric Co Ltd 歪補償増幅回路
JP3361657B2 (ja) * 1995-07-20 2003-01-07 松下電器産業株式会社 フィードフォワード増幅器の制御装置および制御方法
JP2917904B2 (ja) * 1996-04-15 1999-07-12 日本電気株式会社 フィードフォワード増幅器
US5796304A (en) * 1996-04-24 1998-08-18 Powerwave Technologies, Inc. Broadband amplifier with quadrature pilot signal
US5774018A (en) * 1996-09-18 1998-06-30 Hughes Electronics Corporation Linear amplifier system and method
US5926067A (en) * 1998-09-29 1999-07-20 Lucent Technologies Inc. Sweep pilot technique for a control system that reduces distortion produced by electrical circuits
US5986499A (en) * 1998-12-21 1999-11-16 Lucent Technologies Inc. Pilot signal detection system using band reject filter

Also Published As

Publication number Publication date
JP4209051B2 (ja) 2009-01-14
EP0991210A3 (en) 2003-05-07
KR20000023530A (ko) 2000-04-25
AU764149B2 (en) 2003-08-14
CA2279444A1 (en) 2000-03-29
CN1116736C (zh) 2003-07-30
CN1250251A (zh) 2000-04-12
EP0991210B1 (en) 2009-11-25
AU4885999A (en) 2000-03-30
JP2000124839A (ja) 2000-04-28
CA2279444C (en) 2005-11-29
KR100719779B1 (ko) 2007-05-21
EP0991210A2 (en) 2000-04-05
DE69941660D1 (de) 2010-01-07
US6157254A (en) 2000-12-05

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 13A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2167 DE 17/07/2012.