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

Similar Documents

Publication Publication Date Title
DE60140381D1 (de) Verstärkersysteme und verfahren mit einer festen und modulierten spannungversorgungsschaltung und mit einem hochsetz-tiefsetzstellerschaltregler
KR920009061A (ko) 고주파 전력 증폭기의 출력 레벨 제어회로
KR860007795A (ko) 송신기의 출력 전력 제어장치
AU2002229135A1 (en) Apparatus and methods for monitoring and controlling power amplifier linearity using detected fundamental and harmonic components
MX9602253A (es) Metodo y aparato para amplificar una señal.
ATE249691T1 (de) Verfahren und vorrichtung zur erhöhung des wirkungsgrades von leistungsverstärkern bei signalen mit hohem spitzenwert- zu mittelwertverhältnis
SE9802498D0 (sv) Arrangement and method relating to radio communication
UA39094C2 (uk) Передавач (варіанти), спосіб керування підсилювачем, схема підсилення і керування насиченням підсилювача
TW342553B (en) Efficient parallel-stage power amplifier
TR200200189T2 (tr) Bir kuvvetlendiricinin doğrusallaştırılması için yöntem ve aygıt
ATE226768T1 (de) Verfahren zum einstellen von audiosignalen in abhängigkeit von änderungen in einer versorgungsspannung und dazugehörige kommunikationsvorichtungen
MY112208A (en) Radio frequency amplifier having improved ctb and cross modulation characteristics
DE69114506D1 (de) Leistungsverstärker.
TW350171B (en) Amplification circuit and the apparatus
SE9701521L (sv) Effektförstärkare och tillhörande förfarande
EP0838914A3 (en) Circuit arrangement for amplifying an electrical signal converted from an optical signal
KR950002198A (ko) 전원 회로 및 증폭 회로 및 혼성 집적 회로 장치
NO20010448L (no) FremgangsmÕte for oppsetting av en lineariseringskrets
US4298841A (en) Signal envelope detecting system
KR920010308A (ko) 집적회로 검사장치
KR920005466A (ko) 서보 회로
KR930017292A (ko) 신호처리회로
KR970009193A (ko) 영상출력장치의 동기신호분리회로
ATE114208T1 (de) Schaltungsanordnung zur regelung des pegels elektrischer signale.
SE9101459D0 (sv) Limiterande foerstaerkare

Legal Events

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