NO20002209L - FremgangsmÕte for linearisering, samt forsterkeranordning - Google Patents

FremgangsmÕte for linearisering, samt forsterkeranordning

Info

Publication number
NO20002209L
NO20002209L NO20002209A NO20002209A NO20002209L NO 20002209 L NO20002209 L NO 20002209L NO 20002209 A NO20002209 A NO 20002209A NO 20002209 A NO20002209 A NO 20002209A NO 20002209 L NO20002209 L NO 20002209L
Authority
NO
Norway
Prior art keywords
distortion
amplified
signal
linearization
memory
Prior art date
Application number
NO20002209A
Other languages
English (en)
Other versions
NO20002209D0 (no
Inventor
Toni Neffling
Original Assignee
Nokia Networks Oy
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 Nokia Networks Oy filed Critical Nokia Networks Oy
Publication of NO20002209L publication Critical patent/NO20002209L/no
Publication of NO20002209D0 publication Critical patent/NO20002209D0/no

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
    • 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
    • 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Processing Of Solid Wastes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Oppfinnelsen angår en fremgangsmåte for linearisering, samt en forsterker- anordning hvor et signal (100) som skal forsterkes, forforvrenges ved å utnytte digital forforvrengnings-informasjon lagret i en forforvrengnings-styringsenhets (110) minne. Forforvrengningsanordninger (104, 106) forforvrenger signalet (100) som skal forsterkes, på dets analoge form, forforvrengningen tilpasses i det minste til signalet (100) som skal forsterkes, forforvrengnings-informasjonen lagret i styringsenhetens (110) minne tilsvarer variablene i polarkoordinater, slik som fase og amplitude, og fasen og amplituden for signalet (100) som skal forsterkes, forvrenges ved forforvrengningen i samsvar med den forforvrengnings-informasjon som befinner seg i styringsenhetens (110) minne.
NO20002209A 1997-10-29 2000-04-28 FremgangsmÕte for linearisering, samt forsterkeranordning NO20002209D0 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI974088A FI105366B (fi) 1997-10-29 1997-10-29 Linearisointimenetelmä ja vahvistinjärjestely
PCT/FI1998/000832 WO1999022444A1 (en) 1997-10-29 1998-10-26 Linearization method and amplifier arrangement

Publications (2)

Publication Number Publication Date
NO20002209L true NO20002209L (no) 2000-04-28
NO20002209D0 NO20002209D0 (no) 2000-04-28

Family

ID=8549825

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20002209A NO20002209D0 (no) 1997-10-29 2000-04-28 FremgangsmÕte for linearisering, samt forsterkeranordning

Country Status (10)

Country Link
US (1) US6271724B1 (no)
EP (1) EP1025638B1 (no)
JP (1) JP2001522155A (no)
CN (1) CN1111945C (no)
AT (1) ATE256355T1 (no)
AU (1) AU9631598A (no)
DE (1) DE69820472T2 (no)
FI (1) FI105366B (no)
NO (1) NO20002209D0 (no)
WO (1) WO1999022444A1 (no)

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GB9811381D0 (en) * 1998-05-27 1998-07-22 Nokia Mobile Phones Ltd Predistortion control for power reduction
DE69922266D1 (de) * 1999-05-25 2004-12-30 Nokia Corp Linearisierungs- und modulationsvorrichtung
GB2351624B (en) 1999-06-30 2003-12-03 Wireless Systems Int Ltd Reducing distortion of signals
GB2352570B (en) * 1999-07-28 2003-12-24 Wireless Systems Int Ltd Distortion reduction
JP2001053552A (ja) * 1999-08-10 2001-02-23 Nec Corp フィードフォワード増幅回路、及びフィードフォワード増幅回路における非線形歪の補償方法。
EP1124324A1 (en) * 2000-02-10 2001-08-16 Alcatel Method for linearizing, over a wide frequency band, a transmission system comprising a power amplifier
GB0011326D0 (en) * 2000-05-11 2000-06-28 Nortel Networks Corp A linear amplifier arrangement
US6934341B2 (en) 2000-08-29 2005-08-23 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for plurality signal generation
JP2002111398A (ja) * 2000-09-29 2002-04-12 Sony Corp 歪補償装置及び歪補償方法
US6545535B2 (en) * 2000-10-12 2003-04-08 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for reducing distortion
KR20030014514A (ko) * 2001-08-11 2003-02-19 한국전자통신연구원 비선형 초고주파 회로의 혼변조 신호 검출 장치
DE10151173B4 (de) * 2001-10-17 2012-07-12 Rohde & Schwarz Gmbh & Co. Kg Verfahren zum Messen des Modulationsfehlers von digital modulierten Hochfrequenzsignalen
US7248642B1 (en) 2002-02-05 2007-07-24 Andrew Corporation Frequency-dependent phase pre-distortion for reducing spurious emissions in communication networks
US7266159B2 (en) * 2002-03-08 2007-09-04 Andrew Corporation Frequency-dependent magnitude pre-distortion on non-baseband input signals for reducing spurious emissions in communication networks
US7197085B1 (en) 2002-03-08 2007-03-27 Andrew Corporation Frequency-dependent magnitude pre-distortion for reducing spurious emissions in communication networks
EP1504525A2 (de) * 2002-05-14 2005-02-09 Siemens Aktiengesellschaft Verfahren zum erzeugen eines sendesignals
US6734733B2 (en) 2002-06-07 2004-05-11 Telefonaktiebolaget Lm Ericsson (Publ) Auxiliary amplifier in feedforward linearization amplification system
US7139327B2 (en) * 2002-06-10 2006-11-21 Andrew Corporation Digital pre-distortion of input signals for reducing spurious emissions in communication networks
US6674335B1 (en) 2002-06-28 2004-01-06 Qualcomm Incorporated Blind linearization using cross-modulation
DE60327042D1 (de) * 2003-02-26 2009-05-20 Bystronic Laser Ag Verfahren zur Korrigierung eines Biegvorgangs und Biegepresse
US7251293B2 (en) * 2003-06-27 2007-07-31 Andrew Corporation Digital pre-distortion for the linearization of power amplifiers with asymmetrical characteristics
GB2407929A (en) * 2003-11-05 2005-05-11 Motorola Inc A predistorter for a polar transmitter, using look-up tables and interpolation, and possessing a simple training procedure.
CN100525079C (zh) * 2004-12-28 2009-08-05 中兴通讯股份有限公司 模拟预失真线性化方法及实现所述方法的装置
US7193462B2 (en) * 2005-03-22 2007-03-20 Powerwave Technologies, Inc. RF power amplifier system employing an analog predistortion module using zero crossings
US7474237B2 (en) * 2006-02-03 2009-01-06 The Trustees Of Columbia University In The City Of New York Circuits and methods for using error correction in power amplification and signal conversion
US8019015B2 (en) * 2007-02-26 2011-09-13 Harris Corporation Linearization of RF power amplifiers using an adaptive subband predistorter
KR101481507B1 (ko) * 2007-03-12 2015-01-13 엘지전자 주식회사 부가 제어 신호 송수신 방법
US7642850B2 (en) * 2008-04-02 2010-01-05 Harris Corporation Feedforward linearization of RF power amplifiers
US8711976B2 (en) 2011-05-12 2014-04-29 Andrew Llc Pre-distortion architecture for compensating non-linear effects
CN102751950B (zh) * 2012-06-29 2015-01-28 宁波大学 一种多波段多模式射频功率放大器的数字预失真方法

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US4291277A (en) * 1979-05-16 1981-09-22 Harris Corporation Adaptive predistortion technique for linearizing a power amplifier for digital data systems
US4462001A (en) * 1982-02-22 1984-07-24 Canadian Patents & Development Limited Baseband linearizer for wideband, high power, nonlinear amplifiers
US4879519A (en) * 1988-10-31 1989-11-07 American Telephone And Telegraph Company, At&T Bell Labs Predistortion compensated linear amplifier
SE465494B (sv) * 1990-01-22 1991-09-16 Ericsson Telefon Ab L M Foerfarande att kompensera foer olineariteter i en slutfoerstaerkare
US5049832A (en) 1990-04-20 1991-09-17 Simon Fraser University Amplifier linearization by adaptive predistortion
US5193224A (en) * 1991-04-24 1993-03-09 Northern Telecom Limited Adaptive phase control for a power amplifier predistorter
JPH05121958A (ja) * 1991-10-29 1993-05-18 Saitama Nippon Denki Kk 直線増幅装置の歪補償制御方式
US5489875A (en) 1994-09-21 1996-02-06 Simon Fraser University Adaptive feedforward linearizer for RF power amplifiers
US5570063A (en) * 1995-05-18 1996-10-29 Spectrian, Inc. RF power amplifier with signal predistortion for improved linearity
US5898338A (en) * 1996-09-20 1999-04-27 Spectrian Adaptive digital predistortion linearization and feed-forward correction of RF power amplifier
JPH10145161A (ja) * 1996-11-13 1998-05-29 Nec Corp プリディストーション自動調整回路
US5929704A (en) * 1998-02-20 1999-07-27 Spectrian Control of RF error extraction using auto-calibrating RF correlator

Also Published As

Publication number Publication date
AU9631598A (en) 1999-05-17
FI974088L (fi) 1999-04-30
DE69820472T2 (de) 2004-10-28
CN1111945C (zh) 2003-06-18
ATE256355T1 (de) 2003-12-15
EP1025638B1 (en) 2003-12-10
WO1999022444A1 (en) 1999-05-06
CN1276929A (zh) 2000-12-13
NO20002209D0 (no) 2000-04-28
FI974088A0 (fi) 1997-10-29
DE69820472D1 (de) 2004-01-22
EP1025638A1 (en) 2000-08-09
JP2001522155A (ja) 2001-11-13
FI105366B (fi) 2000-07-31
US6271724B1 (en) 2001-08-07

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