NO20010448L - FremgangsmÕte for oppsetting av en lineariseringskrets - Google Patents

FremgangsmÕte for oppsetting av en lineariseringskrets

Info

Publication number
NO20010448L
NO20010448L NO20010448A NO20010448A NO20010448L NO 20010448 L NO20010448 L NO 20010448L NO 20010448 A NO20010448 A NO 20010448A NO 20010448 A NO20010448 A NO 20010448A NO 20010448 L NO20010448 L NO 20010448L
Authority
NO
Norway
Prior art keywords
setting
linearizing
input signal
low
power level
Prior art date
Application number
NO20010448A
Other languages
English (en)
Other versions
NO20010448D0 (no
Inventor
Jari Pekkarinen
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 NO20010448D0 publication Critical patent/NO20010448D0/no
Publication of NO20010448L publication Critical patent/NO20010448L/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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)

Abstract

En fremgangsmåte for oppsetting av en lineariseringskrets, slik som en lineær effektforsterker, er beskrevet, l henhold til denne fremgangsmåte blir et inngangssignal tilført ved et lavt starteffektnivå, og det økes langsomt under oppsettingen inntil det oppnår et driftsnivå tilsvarende normal bruk. Fordelen med dette er at en ledetone som anvendes i lineariseringskretsen, lett kan detekteres under oppsettingen, da dets amplitude ligger over inn- gangssignalets lave starteffektnivå. Et fremoverregulert lineariseringsutstyr og overføringsutstyr som utnytter denne teknikk, er beskrevet.
NO20010448A 1998-07-27 2001-01-26 FremgangsmÕte for oppsetting av en lineariseringskrets NO20010448L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1998/004989 WO2000007293A1 (en) 1998-07-27 1998-07-27 A set-up method for a linearising circuit

Publications (2)

Publication Number Publication Date
NO20010448D0 NO20010448D0 (no) 2001-01-26
NO20010448L true NO20010448L (no) 2001-03-26

Family

ID=8167030

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20010448A NO20010448L (no) 1998-07-27 2001-01-26 FremgangsmÕte for oppsetting av en lineariseringskrets

Country Status (9)

Country Link
US (1) US6593808B2 (no)
EP (1) EP1101280B1 (no)
JP (1) JP2002521951A (no)
CN (1) CN1307745A (no)
AT (1) ATE276601T1 (no)
AU (1) AU755588B2 (no)
DE (1) DE69826328D1 (no)
NO (1) NO20010448L (no)
WO (1) WO2000007293A1 (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7126421B2 (en) * 2003-09-23 2006-10-24 Powerwave Technologies, Inc. Method for aligning feed forward loops
JP2005354255A (ja) * 2004-06-09 2005-12-22 Fujitsu Ltd 干渉除去装置及び干渉除去方法
CN102571213B (zh) * 2012-02-02 2017-02-08 中兴通讯股份有限公司 一种实现光放大器增益控制的装置和方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4694258A (en) * 1986-03-14 1987-09-15 General Instrument Corporation Method and system of enhancing performance of feedforward amplifiers
JP3052162B2 (ja) * 1991-10-24 2000-06-12 日本無線株式会社 屋外受信装置の異常監視装置
JP3320210B2 (ja) * 1994-05-31 2002-09-03 富士通株式会社 初期動作時不要波出力防止型フィードフォワード増幅装置
US5528196A (en) * 1995-01-06 1996-06-18 Spectrian, Inc. Linear RF amplifier having reduced intermodulation distortion
JP2000004124A (ja) * 1998-06-17 2000-01-07 Nec Corp フィードフォワード増幅器

Also Published As

Publication number Publication date
AU755588B2 (en) 2002-12-19
AU9258198A (en) 2000-02-21
US6593808B2 (en) 2003-07-15
CN1307745A (zh) 2001-08-08
EP1101280B1 (en) 2004-09-15
DE69826328D1 (de) 2004-10-21
EP1101280A1 (en) 2001-05-23
US20020127979A1 (en) 2002-09-12
NO20010448D0 (no) 2001-01-26
JP2002521951A (ja) 2002-07-16
ATE276601T1 (de) 2004-10-15
WO2000007293A1 (en) 2000-02-10

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Legal Events

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FC2A Withdrawal, rejection or dismissal of laid open patent application