FI110396B - Framåtkopplad förstärkare med liten förvrängning - Google Patents

Framåtkopplad förstärkare med liten förvrängning Download PDF

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Publication number
FI110396B
FI110396B FI941791A FI941791A FI110396B FI 110396 B FI110396 B FI 110396B FI 941791 A FI941791 A FI 941791A FI 941791 A FI941791 A FI 941791A FI 110396 B FI110396 B FI 110396B
Authority
FI
Finland
Prior art keywords
signal
path
för att
nämnda
signal path
Prior art date
Application number
FI941791A
Other languages
English (en)
Finnish (fi)
Other versions
FI941791A (sv
FI941791A0 (sv
Inventor
Robert Evan Myer
Original Assignee
American Telephone & Telegraph
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 American Telephone & Telegraph filed Critical American Telephone & Telegraph
Publication of FI941791A0 publication Critical patent/FI941791A0/sv
Publication of FI941791A publication Critical patent/FI941791A/sv
Application granted granted Critical
Publication of FI110396B publication Critical patent/FI110396B/sv

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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
    • 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
    • H03F2201/3218—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion the main amplifier or error amplifier being a feedforward amplifier

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
FI941791A 1993-04-19 1994-04-18 Framåtkopplad förstärkare med liten förvrängning FI110396B (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/049,780 US5304945A (en) 1993-04-19 1993-04-19 Low-distortion feed-forward amplifier
US4978093 1993-04-19

Publications (3)

Publication Number Publication Date
FI941791A0 FI941791A0 (sv) 1994-04-18
FI941791A FI941791A (sv) 1994-10-20
FI110396B true FI110396B (sv) 2003-01-15

Family

ID=21961697

Family Applications (1)

Application Number Title Priority Date Filing Date
FI941791A FI110396B (sv) 1993-04-19 1994-04-18 Framåtkopplad förstärkare med liten förvrängning

Country Status (7)

Country Link
US (1) US5304945A (sv)
EP (1) EP0621684B1 (sv)
JP (1) JPH0722856A (sv)
KR (1) KR100315569B1 (sv)
CN (1) CN1098572A (sv)
DE (1) DE69422543T2 (sv)
FI (1) FI110396B (sv)

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US5570350A (en) * 1994-09-30 1996-10-29 Lucent Technologies Inc. CDMA cellular communications with multicarrier signal processing
US5625871A (en) * 1994-09-30 1997-04-29 Lucent Technologies Inc. Cellular communications system with multicarrier signal processing
US5694395A (en) * 1994-09-30 1997-12-02 Lucent Technologies, Inc. Method and apparatus for processing multicarrier signals
US5955916A (en) * 1994-11-23 1999-09-21 Lucent Technologies Inc. Modulator linear feed-forward amplifier
US5745846A (en) * 1995-08-07 1998-04-28 Lucent Technologies, Inc. Channelized apparatus for equalizing carrier powers of multicarrier signal
EP0762630A1 (en) * 1995-09-08 1997-03-12 AT&T IPM Corp. Low distortion amplifier circuit with improved output power
US5623227A (en) * 1995-10-17 1997-04-22 Motorola, Inc. Amplifier circuit and method of controlling an amplifier for use in a radio frequency communication system
RU2142670C1 (ru) * 1995-11-16 1999-12-10 Самсунг Электроникс Ко., Лтд. Устройство линейного усиления мощности
US5742201A (en) * 1996-01-30 1998-04-21 Spectrian Polar envelope correction mechanism for enhancing linearity of RF/microwave power amplifier
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
US5867064A (en) * 1996-08-19 1999-02-02 Motorola, Inc. Method and apparatus for improving intermodulation in a feed-forward amplifier
US5929701A (en) * 1996-12-13 1999-07-27 At&T Corp. Feed forward amplifier system and method
DE69724146T2 (de) * 1996-12-30 2004-02-26 Samsung Electronics Co., Ltd., Suwon Kombinierte lineare leistungsverstärkungsvorrichtung und verfahren
KR100266817B1 (ko) * 1997-01-31 2000-09-15 윤종용 피드포워드방식의선형증폭장치및방법
US5994957A (en) * 1997-12-19 1999-11-30 Lucent Technologies Inc. Feed forward amplifier improvement
US5959500A (en) * 1998-01-26 1999-09-28 Glenayre Electronics, Inc. Model-based adaptive feedforward amplifier linearizer
US5977826A (en) * 1998-03-13 1999-11-02 Behan; Scott T. Cascaded error correction in a feed forward amplifier
US6198419B1 (en) 1998-06-17 2001-03-06 Lucent Technologies, Inc. Method and apparatus for extending the spurious free dynamic range of a digital-to-analog converter
US6339701B1 (en) 1998-06-17 2002-01-15 Lucent Technologies, Inc. Method and apparatus for extending the dynamic range of a frequency mixer
US6363120B1 (en) 1998-06-17 2002-03-26 Lucent Technologies Inc. Apparatus and method for extending the dynamic range of a mixer using feed forward distortion reduction
US6097324A (en) * 1998-06-17 2000-08-01 Lucent Technologies Inc. Method and apparatus for extending the spurious free dynamic range of an analog-to-digital converter
US6091296A (en) * 1998-08-14 2000-07-18 Samsung Electronics Co., Ltd. Single loop feedforward amplifier for use in an RF transmitter and method of operation
US6166600A (en) * 1998-08-31 2000-12-26 Lucent Technologies Inc. Automatic gain and phase controlled feedforward amplifier without pilot signal
US6052023A (en) * 1998-08-31 2000-04-18 Lucent Technologies Inc. Calibration system for feed forward distortion reduction system
US6188732B1 (en) 1998-10-19 2001-02-13 Samsung Electronics Co., Ltd. Digital feedforward amplifier for use in an RF transmitter and method of operation
US6292598B1 (en) * 1998-11-04 2001-09-18 Corvis Corporation Optical transmission apparatuses, methods, and systems
US6529305B1 (en) 1998-11-04 2003-03-04 Corvis Corporation Optical transmission apparatuses, methods, and systems
US6118566A (en) 1998-11-04 2000-09-12 Corvis Corporation Optical upconverter apparatuses, methods, and systems
US6127889A (en) * 1998-11-18 2000-10-03 Lucent Technologies Inc. Nested feed forward distortion reduction system
US6243038B1 (en) 1998-12-17 2001-06-05 Metawave Communications Corporation System and method providing amplification of narrow band signals with multi-channel amplifiers
US5986499A (en) * 1998-12-21 1999-11-16 Lucent Technologies Inc. Pilot signal detection system using band reject filter
EP1030441A3 (en) * 1999-02-16 2004-03-17 Matsushita Electric Industrial Co., Ltd. Feedforward amplifier
KR100362925B1 (ko) * 1999-03-31 2002-11-29 가부시키가이샤 엔.티.티.도코모 피드포워드 증폭기
US6359509B1 (en) 1999-04-29 2002-03-19 Netcom, Inc. Balanced error correction amplifier and method of removing distortion from an amplified signal
US6348838B1 (en) 1999-04-29 2002-02-19 Netcom, Inc. Optimal power combining for balanced error correction amplifier
US6236286B1 (en) * 1999-06-08 2001-05-22 Lucent Technologies, Inc. Integrated on-board automated alignment for a low distortion amplifier
US6194942B1 (en) * 2000-01-19 2001-02-27 Cable Vision Electronics Co., Ltd. Predistortion circuit for linearization of signals
US20050101404A1 (en) * 2000-04-19 2005-05-12 Long D. C. Golf club head with localized grooves and reinforcement
US6424213B1 (en) 2000-04-22 2002-07-23 Netcom, Inc. Loss reduction using multiple amplifiers identically divided
US6504428B2 (en) * 2000-05-19 2003-01-07 Spectrian Corporation High linearity multicarrier RF amplifier
JP2001339251A (ja) * 2000-05-25 2001-12-07 Mitsubishi Electric Corp フィードフォワード増幅器
SE0004479D0 (sv) 2000-12-05 2000-12-05 Ericsson Telefon Ab L M Method and arrangement relating to electronic compensation
CN1215727C (zh) * 2001-11-06 2005-08-17 株式会社Ntt都科摩 具有双重环路的前馈放大器
US6700442B2 (en) * 2001-11-20 2004-03-02 Thomas Quang Ha N way phase cancellation power amplifier
US7142788B2 (en) * 2002-04-16 2006-11-28 Corvis Corporation Optical communications systems, devices, and methods
US7308234B2 (en) 2005-01-19 2007-12-11 Northrop Grumman Corporation Feedforward spur cancellation approach using low IP amplifier
US8159390B2 (en) * 2007-03-29 2012-04-17 Raytheon Company Temporal CW nuller
US8965454B2 (en) * 2009-03-04 2015-02-24 Andrew Llc Amplifier system for cell sites and other suitable applications
CN103219950B (zh) * 2013-03-14 2016-04-27 武汉正维电子技术有限公司 具有三路合路二次对消功能的高效率功率放大电路

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US3471798A (en) * 1967-12-26 1969-10-07 Bell Telephone Labor Inc Feed-forward amplifier
US3815040A (en) * 1973-03-02 1974-06-04 Bell Telephone Labor Inc Feed-forward, error-correcting systems
US3873936A (en) * 1974-03-07 1975-03-25 Bell Telephone Labor Inc Apparatus for reducing distortion in a repeatered transmission system
US4146844A (en) * 1977-10-31 1979-03-27 Tektronix, Inc. Feed-forward amplifier
CH644362A5 (de) * 1980-05-06 1984-07-31 Ciba Geigy Ag 3,5-disubstituierte phthalsaeureimide.
US4532478A (en) * 1984-05-30 1985-07-30 Rockwell International Corporation Phase adjusted feedforward system utilizing a single amplitude/phase equalizer
US4583049A (en) * 1984-06-15 1986-04-15 Trw Inc. Feed-forward circuit
US4812779A (en) * 1985-05-31 1989-03-14 Texscan Corporation Low-power feedforward amplifier
GB2190557B (en) * 1986-05-16 1989-12-13 Marconi Co Ltd Amplifying circuit arrangement
US4916407A (en) * 1988-12-29 1990-04-10 Westinghouse Electric Corp. Gain variation compensating circuit for a feedforward linear amplifier
US4926134A (en) * 1988-12-29 1990-05-15 Westinghouse Electric Corp. Gain monitoring of distortion cancellation amplifiers in a feedforward linear amplifier
US4943783A (en) * 1989-07-31 1990-07-24 Nippon Telegraph And Telephone Corporation Feed forward distortion correction circuit
GB2238196A (en) * 1989-11-16 1991-05-22 Motorola Inc Feed forward amplifier with pre-distortion
US5023565A (en) * 1990-01-26 1991-06-11 At&T Bell Laboratories Linear amplifier with automatic adjustment of feed forward loop gain and phase
US5001443A (en) * 1990-02-02 1991-03-19 At&T Bell Laboratories Coaxial-waveguide assemblages
CA2046413C (en) * 1990-07-11 1994-01-04 Shoichi Narahashi Feed-forward amplifier
US5117197A (en) * 1990-11-09 1992-05-26 Hughes Aircraft Company High-power feed-forward microwave amplifier apparatus with out-of-band intermodulation product suppression
US5077532A (en) * 1990-12-17 1991-12-31 Motorola, Inc. Feed forward distortion minimization circuit

Also Published As

Publication number Publication date
KR940025154A (ko) 1994-11-19
JPH0722856A (ja) 1995-01-24
EP0621684B1 (en) 2000-01-12
DE69422543D1 (de) 2000-02-17
US5304945A (en) 1994-04-19
CN1098572A (zh) 1995-02-08
DE69422543T2 (de) 2000-07-27
EP0621684A1 (en) 1994-10-26
FI941791A (sv) 1994-10-20
FI941791A0 (sv) 1994-04-18
KR100315569B1 (ko) 2002-02-28

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