BR0003484A - Método e sistema de controle de ajustamento de fase e/ou de ganho adaptativo - Google Patents

Método e sistema de controle de ajustamento de fase e/ou de ganho adaptativo

Info

Publication number
BR0003484A
BR0003484A BR0003484-3A BR0003484A BR0003484A BR 0003484 A BR0003484 A BR 0003484A BR 0003484 A BR0003484 A BR 0003484A BR 0003484 A BR0003484 A BR 0003484A
Authority
BR
Brazil
Prior art keywords
gain
phase
adjustment
error signal
resolution
Prior art date
Application number
BR0003484-3A
Other languages
English (en)
Other versions
BR0003484B1 (pt
Inventor
Reza Ghanadan
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 BR0003484A publication Critical patent/BR0003484A/pt
Publication of BR0003484B1 publication Critical patent/BR0003484B1/pt

Links

Classifications

    • 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
    • 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

Abstract

<B>"MéTODO E SISTEMA DE CONTROLE DE AJUSTAMENTO DE FASE E/OU DE GANHO ADAPTATIVO<D> Um sistema de controle adaptativo de ganho e/ou de fase adapta a resolução de ajustamento de ganho e/ou de fase para fornecer desempenho melhor. Por exemplo, o sistema de controle adaptativo de ganho e/ou de fase pode ajustar dinamicamente a resolução de ajustamento para ajustamentos de ganho e/ou de fase como uma função dos sinais de erro. Em resposta a um sinal de erro grande (longe do nulo), o sistema de controle adaptativo de ganho e/ou de fase diminui a resolução de ajustamento, resultando em uma taxa de convergência mais rápida. Em um sistema de redução de distorção de alimentação para frente, diminuir a resolução de ajustamento melhora a resposta transiente do amplificador (por exemplo, dado qualquer conjunto de condições operacionais, com que rapidez o amplificador responde a uma entrada em mudança). à medida que ajustamentos de fase ou de ganho são feitos para se aproximarem do nulo, o sinal de erro reduz, e o sistema de redução de distorção adaptativa aumenta a resolução de ajustamento. Ao aumentar a resolução de ajustamento à medida que o sinal de erro se aproxima do nulo, ajustamentos mais finos da fase ou de ganho podem ser feitos os quais reduzem ainda mais o sinal de erro. Por exemplo, em um sistema de redução de distorção de alimentação para frente, tal esquema impede que o sinal de erro salte repetidamente sobre o nulo devido a resolução limitada sem sacrificar a resposta transiente do amplificador.
BRPI0003484-3A 1999-08-19 2000-08-10 mÉtodo e sistema de controle de ajustamento de fase e/ou de ganho adaptativo. BR0003484B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/377,387 US6259319B1 (en) 1999-08-19 1999-08-19 Adaptive gain and/or phase adjustment control system and method

Publications (2)

Publication Number Publication Date
BR0003484A true BR0003484A (pt) 2001-04-03
BR0003484B1 BR0003484B1 (pt) 2012-12-25

Family

ID=23488921

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0003484-3A BR0003484B1 (pt) 1999-08-19 2000-08-10 mÉtodo e sistema de controle de ajustamento de fase e/ou de ganho adaptativo.

Country Status (10)

Country Link
US (1) US6259319B1 (pt)
EP (2) EP1777813B1 (pt)
JP (1) JP3967530B2 (pt)
KR (1) KR100417542B1 (pt)
CN (1) CN1196253C (pt)
AT (1) ATE444590T1 (pt)
AU (1) AU766523B2 (pt)
BR (1) BR0003484B1 (pt)
CA (1) CA2315577C (pt)
DE (1) DE60043082D1 (pt)

Families Citing this family (16)

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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
US6608523B1 (en) * 2000-08-24 2003-08-19 Lucent Technologies Inc. System and method for producing a pilot signal in a distortion reduction system
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
US7426176B2 (en) * 2002-09-30 2008-09-16 Lucent Technologies Inc. Method of power allocation and rate control in OFDMA systems
US20040203476A1 (en) * 2002-10-08 2004-10-14 Jung-Tao Liu Method of feedback for HSDPA system using OFMDA
CN100530941C (zh) * 2002-12-18 2009-08-19 电力波技术公司 用罚值和底值进行优化控制的前馈放大器系统、方法及产品
US7002407B2 (en) 2002-12-18 2006-02-21 Powerwave Technologies, Inc. Delay mismatched feed forward amplifier system using penalties and floors for control
US7289773B2 (en) 2003-01-23 2007-10-30 Powerwave Technologies, Inc. Digital transmitter system employing self-generating predistortion parameter lists and adaptive controller
US6985706B2 (en) * 2003-01-23 2006-01-10 Powerwave Technologies, Inc. Feed forward amplifier system employing self-generating alignment lists and adaptive controller
RU2470456C2 (ru) * 2007-05-04 2012-12-20 Астриум Лимитед Многопортовые усилители в спутниках связи
EP2582043A1 (en) 2011-10-10 2013-04-17 Astrium Limited Control system for a power amplifier
CN104283575A (zh) * 2013-07-05 2015-01-14 珠海扬智电子科技有限公司 增益可变及延迟可变的射频调谐器
EP3819652B1 (en) * 2019-11-08 2024-03-13 Rohde & Schwarz GmbH & Co. KG Method and system for determining and/or adjusting phases of at least two electrical signals

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US4580105A (en) * 1985-01-25 1986-04-01 At&T Bell Laboratories Automatic reduction of intermodulation products in high power linear amplifiers
US4745372A (en) * 1985-10-17 1988-05-17 Matsushita Electric Industrial Co., Ltd. Phase-locked-loop circuit having a charge pump
US4879519A (en) * 1988-10-31 1989-11-07 American Telephone And Telegraph Company, At&T Bell Labs Predistortion compensated linear amplifier
US4885551A (en) * 1988-10-31 1989-12-05 American Telephone And Telegraph Company At&T Bell Laboratories Feed forward linear amplifier
US5023565A (en) * 1990-01-26 1991-06-11 At&T Bell Laboratories Linear amplifier with automatic adjustment of feed forward loop gain and phase
US5268761A (en) * 1992-08-19 1993-12-07 Rca Thomson Licensing Corporation Automatic gain control system for a high definition television signal receiver including an adaptive equalizer
GB9219663D0 (en) * 1992-09-17 1992-10-28 Rca Thomson Licensing Corp Switch mode power supply with low input current distortion
US5706057A (en) * 1994-03-21 1998-01-06 Rca Thomson Licensing Corporation Phase detector in a carrier recovery network for a vestigial sideband signal
US6078216A (en) * 1998-03-31 2000-06-20 Spectrian Corporation Aliased wide band performance monitor for adjusting predistortion and vector modulator control parameters of RF amplifier
US6154093A (en) * 1998-04-01 2000-11-28 Lucent Technologies Inc. Fast adaptive wideband power amplifier feed forward linearizer using a RLS parameter tracking algorithm
US6028477A (en) * 1998-04-08 2000-02-22 Powerwave Technologies, Inc. Adaptive biasing in a power amplifier

Also Published As

Publication number Publication date
CA2315577C (en) 2005-03-01
CN1285654A (zh) 2001-02-28
EP1777813B1 (en) 2009-09-30
CN1196253C (zh) 2005-04-06
DE60043082D1 (de) 2009-11-12
KR100417542B1 (ko) 2004-02-05
KR20010039821A (ko) 2001-05-15
AU5196700A (en) 2001-02-22
BR0003484B1 (pt) 2012-12-25
EP1079517A2 (en) 2001-02-28
JP3967530B2 (ja) 2007-08-29
EP1079517A3 (en) 2004-05-19
CA2315577A1 (en) 2001-02-19
ATE444590T1 (de) 2009-10-15
JP2001111437A (ja) 2001-04-20
AU766523B2 (en) 2003-10-16
EP1777813A1 (en) 2007-04-25
US6259319B1 (en) 2001-07-10

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 26/12/2012, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 16A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)