FI116494B - Vahvistinjärjestelmä - Google Patents

Vahvistinjärjestelmä Download PDF

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Publication number
FI116494B
FI116494B FI992240A FI19992240A FI116494B FI 116494 B FI116494 B FI 116494B FI 992240 A FI992240 A FI 992240A FI 19992240 A FI19992240 A FI 19992240A FI 116494 B FI116494 B FI 116494B
Authority
FI
Finland
Prior art keywords
frequency
signal
amplifier
circuit
energy
Prior art date
Application number
FI992240A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI19992240A (fi
Inventor
Gregory French
Richard D Posner
Kwang Kim
Stefan Klein
Wayne Roberts
Original Assignee
Powerwave Technologies Inc
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 Powerwave Technologies Inc filed Critical Powerwave Technologies Inc
Publication of FI19992240A publication Critical patent/FI19992240A/fi
Application granted granted Critical
Publication of FI116494B publication Critical patent/FI116494B/fi

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
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
FI992240A 1998-10-19 1999-10-18 Vahvistinjärjestelmä FI116494B (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/174,715 US6147555A (en) 1998-10-19 1998-10-19 Amplification system having mask detection
US17471598 1998-10-19

Publications (2)

Publication Number Publication Date
FI19992240A FI19992240A (fi) 2000-04-19
FI116494B true FI116494B (fi) 2005-11-30

Family

ID=22637216

Family Applications (1)

Application Number Title Priority Date Filing Date
FI992240A FI116494B (fi) 1998-10-19 1999-10-18 Vahvistinjärjestelmä

Country Status (5)

Country Link
US (1) US6147555A (fr)
EP (1) EP0996223B1 (fr)
KR (1) KR20000029154A (fr)
CA (1) CA2286542A1 (fr)
FI (1) FI116494B (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6493543B1 (en) * 1998-10-19 2002-12-10 Powerwave Technologies, Inc. Multichannel amplification system using mask detection
FI106412B (fi) * 1998-11-10 2001-01-31 Nokia Mobile Phones Ltd Lineaarinen tehovahvistinjärjestely ja menetelmä sen käyttämiseksi
IT1313906B1 (it) * 1999-06-15 2002-09-26 Cit Alcatel Precorrezione digitale adattiva di non-linearita' introdotte daamplicatori di potenza.
US6342810B1 (en) * 1999-07-13 2002-01-29 Pmc-Sierra, Inc. Predistortion amplifier system with separately controllable amplifiers
US6687466B1 (en) * 2000-01-06 2004-02-03 Adc Telecommunications, Inc. Dynamic distortion control
US6356149B1 (en) * 2000-04-10 2002-03-12 Motorola, Inc. Tunable inductor circuit, phase tuning circuit and applications thereof
KR20040017167A (ko) * 2002-08-20 2004-02-26 알에프코어 주식회사 알에프 선형 전력 증폭기
KR20050084186A (ko) * 2002-12-09 2005-08-26 프리스케일 세미컨덕터, 인크. 판정 피드 포워드 등화기 시스템 및 방법
US7038540B2 (en) * 2003-02-14 2006-05-02 Powerwave Technologies, Inc. Enhanced efficiency feed forward power amplifier utilizing reduced cancellation bandwidth and small error amplifier
US7123086B2 (en) * 2003-05-07 2006-10-17 Powerwave Technologies, Inc. Feed forward amplifier employing positive feedback pilot generation
US7995648B2 (en) * 2004-04-09 2011-08-09 Trident Microsystems (Far East) Ltd. Advanced digital receiver
CA2560729A1 (fr) * 2004-04-09 2005-10-27 Micronas Semiconductors, Inc. Appareil et procede pour developper des valeurs egalisees a partir d'echantillons d'un signal recu en provenance d'un canal
US6975172B2 (en) * 2004-05-03 2005-12-13 Peavey Electronics Corporation Smart voltage rail reduction audio amplifier
WO2006020950A1 (fr) * 2004-08-12 2006-02-23 Micronas Semiconductors, Inc. Unite de commande automatique de gain d'un recepteur
US7756493B2 (en) * 2005-04-05 2010-07-13 Powerwave Technologies, Inc. Feed forward amplifier system and method using the pilot frequency from a positive feedback pilot generation and detection circuit to improve second loop convergence
US7889810B2 (en) * 2006-12-15 2011-02-15 Pine Valley Investments, Inc. Method and apparatus for a nonlinear feedback control system
US8036260B2 (en) 2007-08-30 2011-10-11 Freescale Semiconductor, Inc. System and method for equalizing an incoming signal
JP5282172B2 (ja) * 2010-12-23 2013-09-04 華為技術有限公司 信号処理装置及び信号処理方法
US9031567B2 (en) * 2012-12-28 2015-05-12 Spreadtrum Communications Usa Inc. Method and apparatus for transmitter optimization based on allocated transmission band
US9793932B2 (en) * 2015-03-16 2017-10-17 Mission Microwave Technologies, Inc. Systems and methods for a predistortion linearizer with frequency compensation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3342746B2 (ja) * 1993-06-30 2002-11-11 富士通株式会社 線形増幅器
US5570063A (en) * 1995-05-18 1996-10-29 Spectrian, Inc. RF power amplifier with signal predistortion for improved linearity
AU7462896A (en) * 1995-08-23 1997-03-19 Motorola, Inc. Wideband power amplifier control systems
US5712593A (en) * 1996-02-05 1998-01-27 Motorola, Inc. Linear power amplifier with distortion detection
US5760646A (en) * 1996-03-29 1998-06-02 Spectrian Feed-forward correction loop with adaptive predistortion injection for linearization of RF power amplifier
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
CA2286542A1 (fr) 2000-04-19
EP0996223A1 (fr) 2000-04-26
FI19992240A (fi) 2000-04-19
US6147555A (en) 2000-11-14
KR20000029154A (ko) 2000-05-25
EP0996223B1 (fr) 2005-12-28

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