BR9905876A - Amplificador direto e método para amplificar sinais - Google Patents

Amplificador direto e método para amplificar sinais

Info

Publication number
BR9905876A
BR9905876A BR9905876-6A BR9905876A BR9905876A BR 9905876 A BR9905876 A BR 9905876A BR 9905876 A BR9905876 A BR 9905876A BR 9905876 A BR9905876 A BR 9905876A
Authority
BR
Brazil
Prior art keywords
amplifier
equalizer
direct
direct amplifier
correction
Prior art date
Application number
BR9905876-6A
Other languages
English (en)
Inventor
Norman Gerard Ziesse
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 BR9905876A publication Critical patent/BR9905876A/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
    • H03F1/38—Positive-feedback circuit arrangements without negative feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

<B>AMPLIFICADOR DIRETO E MéTODO PARA AMPLIFICAR SINAIS<D> Um amplificador direto e um método de amplificação usando o amplificador direto incluem um equalizador posicionado em série com um amplificador principal e/ou um amplificador de correção do amplificador direto para compensar uma resposta de freq³ência não plana do amplificador principal e/ou amplificador de correção. O equalizador pode ser um equalizador controlável quanto à tensão ajustável sob controles eletrónicos para acomodar condições de circuito que mudam ou um equalizador com parâmetros fixos. Esses equalizadores são usados seletivamente de acordo com a necessidade e desempenho desejado. O amplificador direto e o método realizam separadamente a função de equalização e a função de linearização do amplificador direto para prover um amplificador direto e método de amplificação que são eficientes em relação ao custo.
BR9905876-6A 1998-10-30 1999-10-22 Amplificador direto e método para amplificar sinais BR9905876A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18264098A 1998-10-30 1998-10-30

Publications (1)

Publication Number Publication Date
BR9905876A true BR9905876A (pt) 2000-09-05

Family

ID=22669391

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9905876-6A BR9905876A (pt) 1998-10-30 1999-10-22 Amplificador direto e método para amplificar sinais

Country Status (7)

Country Link
EP (1) EP0998028A1 (pt)
JP (1) JP2000216639A (pt)
KR (1) KR20000029378A (pt)
CN (1) CN1253460A (pt)
AU (1) AU5597899A (pt)
BR (1) BR9905876A (pt)
CA (1) CA2281209A1 (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6674324B1 (en) * 2000-08-24 2004-01-06 Lucent Technologies Inc. System and method for producing an amplified signal using plurality of amplitudes across spectrum
WO2002050997A1 (fr) 2000-12-04 2002-06-27 Matsushita Electric Industrial Co., Ltd. Amplificateur a correction precursive, appareil de communication, procede d'amplification a correction precursive, programme et procede
US6968170B2 (en) * 2002-07-16 2005-11-22 Narad Networks, Inc. Adaptive correction of a received signal frequency response tilt
US8026762B2 (en) * 2009-06-18 2011-09-27 Alcatel Lucent High efficiency transmitter for wireless communication
US9214968B2 (en) 2013-07-24 2015-12-15 Nokia Technologies Oy Apparatus and methods for providing a power amplifier with interference cancellation
US10469292B1 (en) * 2018-06-29 2019-11-05 Keysight Technologies, Inc. Apparatus and method for characterizing amplifiers in decision feedback equalizers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5334946A (en) * 1990-04-25 1994-08-02 British Technology Group Limited Apparatus and method for reducing distortion in amplification
JP2746107B2 (ja) * 1994-03-31 1998-04-28 日本電気株式会社 フィードフォワード増幅器
US5796307A (en) * 1995-11-16 1998-08-18 Ntt Mobile Communications Network Inc. Amplifying device having input and output nonlinear phase shifters of opposite phase-frequency characteristics
US5892397A (en) * 1996-03-29 1999-04-06 Spectrian Adaptive compensation of RF amplifier distortion by injecting predistortion signal derived from respectively different functions of input signal amplitude
US6172565B1 (en) * 1998-03-13 2001-01-09 Lucent Technologies Inc. Adaptive joint linearization, equalization and delay alignment for a wideband power amplifier

Also Published As

Publication number Publication date
CN1253460A (zh) 2000-05-17
AU5597899A (en) 2000-05-04
CA2281209A1 (en) 2000-04-30
JP2000216639A (ja) 2000-08-04
EP0998028A1 (en) 2000-05-03
KR20000029378A (ko) 2000-05-25

Similar Documents

Publication Publication Date Title
EP2209231A3 (en) Gain and signal level adjustments of cascaded optical amplifiers
CA2516706A1 (en) High efficiency amplification
CA2298928A1 (en) Linear power control loop
KR930703734A (ko) 선형 이득 제어 증폭기
EP0869606A3 (en) Feed-forward amplifier
DE60131463D1 (de) Schutzschaltung zur erweiterten dynamik mit induktionen ausserhalb des halbleiterplättchens
ATE362218T1 (de) Schaltungen und verfahren zum kompensieren von schaltverstärkern
AU6340000A (en) Method and apparatus for linearizing an amplifier
FR2719954B1 (fr) Linéarisateur à prédistorsion large bande et auto compensé en température pour amplificateur hyperfréquence.
EP1096669A4 (en) SEMICONDUCTOR AMPLIFIER CIRCUIT AND SYSTEM
BR9905876A (pt) Amplificador direto e método para amplificar sinais
SE9402088D0 (sv) Microphone system
SE9701521L (sv) Effektförstärkare och tillhörande förfarande
ES472355A1 (es) Disposicion de conexion para la compresion y-o expansion automatica, dinamica, aplicable a aparatos de telecomunica- cion
DK1398993T3 (da) Apparat og fremgangsmåde til tilbagekoblingskompensation i et akustisk forstærkningssystem, især i et høreapparat
KR970050026A (ko) 마이컴을 이용한 수평 사이즈 조절 회로
ATE302501T1 (de) Verstärkerschaltungen und ihre verwendung in hochfrequenzsendern
AU2003260008A1 (en) System and method for establishing the input impedance of an amplifier in a stacked configuration
FI951622A0 (fi) Linearisointikytkentä
WO2001047103A3 (en) Electronic circuit
EP1164693A3 (en) Amplifier apparatus
WO2004093314A3 (en) System, method, and circuit for dynamic range enhancement in a communication system
NO20010448D0 (no) Fremgangsmåte for oppsetting av en lineariseringskrets
KR850002184A (ko) 다단 신호 전송장치
WO2005053150A3 (en) An operational amplifier selecting one of inputs, and an amplifying apparatus using the op amplifier the verification method

Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired