NO20002210L - FremgangsmÕte for tilpasning, samt forsterkeranordning - Google Patents

FremgangsmÕte for tilpasning, samt forsterkeranordning

Info

Publication number
NO20002210L
NO20002210L NO20002210A NO20002210A NO20002210L NO 20002210 L NO20002210 L NO 20002210L NO 20002210 A NO20002210 A NO 20002210A NO 20002210 A NO20002210 A NO 20002210A NO 20002210 L NO20002210 L NO 20002210L
Authority
NO
Norway
Prior art keywords
signal
amplifier
adaptation
well
predetermined
Prior art date
Application number
NO20002210A
Other languages
English (en)
Norwegian (no)
Other versions
NO20002210D0 (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 NO20002210D0 publication Critical patent/NO20002210D0/no
Publication of NO20002210L publication Critical patent/NO20002210L/no

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3223Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H03F1/3229Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Steroid Compounds (AREA)
  • Compositions Of Oxide Ceramics (AREA)
NO20002210A 1997-10-29 2000-04-28 FremgangsmÕte for tilpasning, samt forsterkeranordning NO20002210L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI974087A FI104021B1 (fi) 1997-10-29 1997-10-29 Adaptaatiomenetelmä ja vahvistinjärjestely
PCT/FI1998/000836 WO1999025073A2 (en) 1997-10-29 1998-10-27 Adaptation method and amplifier arrangement

Publications (2)

Publication Number Publication Date
NO20002210D0 NO20002210D0 (no) 2000-04-28
NO20002210L true NO20002210L (no) 2000-04-28

Family

ID=8549824

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20002210A NO20002210L (no) 1997-10-29 2000-04-28 FremgangsmÕte for tilpasning, samt forsterkeranordning

Country Status (10)

Country Link
US (1) US6229391B1 (de)
EP (1) EP1025637B1 (de)
JP (1) JP2001523061A (de)
CN (1) CN1164024C (de)
AT (1) ATE262234T1 (de)
AU (1) AU9631998A (de)
DE (1) DE69822492D1 (de)
FI (1) FI104021B1 (de)
NO (1) NO20002210L (de)
WO (1) WO1999025073A2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0004479D0 (sv) 2000-12-05 2000-12-05 Ericsson Telefon Ab L M Method and arrangement relating to electronic compensation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922617A (en) * 1974-11-18 1975-11-25 Cutler Hammer Inc Adaptive feed forward system
GB2107540B (en) * 1981-10-14 1985-06-26 Marconi Co Ltd Feedforward amplifiers
US4580105A (en) * 1985-01-25 1986-04-01 At&T Bell Laboratories Automatic reduction of intermodulation products in high power linear amplifiers
GB9009295D0 (en) * 1990-04-25 1990-06-20 Kenington Peter B Apparatus and method for reducing distortion in amplification
US5455537A (en) * 1994-08-19 1995-10-03 Radio Frequency Systems, Inc. Feed forward amplifier
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
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
US6066984A (en) * 1998-03-16 2000-05-23 Hitachi Denshi Kabushiki Kaisha Amplifier and amplifying method for amplifying a plurality of signals having different bands simultaneously

Also Published As

Publication number Publication date
AU9631998A (en) 1999-05-31
ATE262234T1 (de) 2004-04-15
FI104021B (fi) 1999-10-29
WO1999025073A3 (en) 1999-07-15
EP1025637A2 (de) 2000-08-09
CN1164024C (zh) 2004-08-25
FI974087A0 (fi) 1997-10-29
NO20002210D0 (no) 2000-04-28
CN1278374A (zh) 2000-12-27
FI974087A7 (fi) 1999-04-30
JP2001523061A (ja) 2001-11-20
DE69822492D1 (de) 2004-04-22
EP1025637B1 (de) 2004-03-17
WO1999025073A2 (en) 1999-05-20
FI104021B1 (fi) 1999-10-29
US6229391B1 (en) 2001-05-08

Similar Documents

Publication Publication Date Title
JP3343911B2 (ja) 線形増幅器制御器
JP2697625B2 (ja) フィードフォワード増幅器
US5677962A (en) Hybrid analog and digital amplifier with a delayed step change in the digital gain
JPH0785522B2 (ja) 大電力線形増幅器における混変調積の自動減少法
EP1224731A4 (de) Verbesserte vorverzerrungskompensation für einen leistungsverstärker
JP2001053552A (ja) 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。
KR970031238A (ko) 선형 증폭 장치 및 방법
US5874856A (en) Feed forward amplifier
US6700441B1 (en) Method and apparatus for reduction of distortion in a feed forward amplifier
US6320461B1 (en) Ultra-linear feedforward RF power amplifier
US6194964B1 (en) Predistorter having an automatic gain control circuit and method therefor
GB2375669A (en) Power stabilisation in an optical communication system
KR19990063180A (ko) 피드 포워드 증폭기
EP1193861A3 (de) Vorwärtskopplungsverstärker
EP0785659A3 (de) Expansion des Mikrophonsignals zur Unterdrückung des Hintergrundgeräuschs
NO20002210L (no) FremgangsmÕte for tilpasning, samt forsterkeranordning
EP1309081A3 (de) Vorwärtsgekoppelter Verstärker zum Kompensieren nicht-linearer Verzerrung
DK1398993T3 (da) Apparat og fremgangsmåde til tilbagekoblingskompensation i et akustisk forstærkningssystem, især i et høreapparat
GB0027067D0 (en) Amplifier linearisation
EP1249930A3 (de) Vorverzerrungslinearisier und Vorverzerrungskompensationsverfahren und Programm
NO20002211L (no) FremgangsmÕte for styring, samt styringsanordning
JP2001313567A (ja) 高パワー選択的信号減衰器および減衰方法
DE50008981D1 (de) Vorrichtung zur Einstellung der Verstärkung eines Repeaters
NO993805L (no) FremgangsmÕte for mottaking og mottaker
EP1280271A3 (de) Vorwärtsgekoppelter Verstärkervorrichtung und Verfahren

Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application