DE69430423T2 - Vorwärtsgekoppelter Verstärker mit Unterdrückung von unerwünschten Ausgangswellen beim Einschalten - Google Patents

Vorwärtsgekoppelter Verstärker mit Unterdrückung von unerwünschten Ausgangswellen beim Einschalten

Info

Publication number
DE69430423T2
DE69430423T2 DE69430423T DE69430423T DE69430423T2 DE 69430423 T2 DE69430423 T2 DE 69430423T2 DE 69430423 T DE69430423 T DE 69430423T DE 69430423 T DE69430423 T DE 69430423T DE 69430423 T2 DE69430423 T2 DE 69430423T2
Authority
DE
Germany
Prior art keywords
suppression
switching
feedforward amplifier
output waves
unwanted output
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69430423T
Other languages
English (en)
Other versions
DE69430423D1 (de
Inventor
Satoshi Maruyama
Fumihiko Kobayashi
Junichi Hasegawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE69430423D1 publication Critical patent/DE69430423D1/de
Application granted granted Critical
Publication of DE69430423T2 publication Critical patent/DE69430423T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H03F1/3235—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction using a pilot signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3212—Using a control circuit to adjust amplitude and phase of a signal in a signal path
DE69430423T 1994-05-31 1994-12-06 Vorwärtsgekoppelter Verstärker mit Unterdrückung von unerwünschten Ausgangswellen beim Einschalten Expired - Lifetime DE69430423T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11809994 1994-05-31
JP17732094A JP3320210B2 (ja) 1994-05-31 1994-07-28 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

Publications (2)

Publication Number Publication Date
DE69430423D1 DE69430423D1 (de) 2002-05-23
DE69430423T2 true DE69430423T2 (de) 2002-11-07

Family

ID=26456097

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69430423T Expired - Lifetime DE69430423T2 (de) 1994-05-31 1994-12-06 Vorwärtsgekoppelter Verstärker mit Unterdrückung von unerwünschten Ausgangswellen beim Einschalten

Country Status (4)

Country Link
US (1) US5515000A (de)
EP (1) EP0685931B1 (de)
JP (1) JP3320210B2 (de)
DE (1) DE69430423T2 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3320284B2 (ja) * 1995-04-18 2002-09-03 富士通株式会社 フィードフォワード増幅装置及びフィードフォワード増幅装置の制御方法並びにフィードフォワード増幅装置付き基地局
JP3753494B2 (ja) * 1997-02-20 2006-03-08 富士通株式会社 フィードフォワード増幅器
JP3106996B2 (ja) * 1997-04-02 2000-11-06 日本電気株式会社 フィードフォワード増幅回路
US5847603A (en) * 1997-07-31 1998-12-08 Lucent Technologies Inc. Automatic control system for reducing distortion produced by electrical circuits
US5999048A (en) * 1998-01-13 1999-12-07 Lucent Technologies Inc. Method and apparatus for spread spectrum pilot extraction for RF amplifiers
JPH11261343A (ja) * 1998-03-10 1999-09-24 Fujitsu Ltd フィードフォーワード増幅器
US6172565B1 (en) * 1998-03-13 2001-01-09 Lucent Technologies Inc. Adaptive joint linearization, equalization and delay alignment for a wideband power amplifier
US6078216A (en) * 1998-03-31 2000-06-20 Spectrian Corporation Aliased wide band performance monitor for adjusting predistortion and vector modulator control parameters of RF amplifier
JP2002521951A (ja) * 1998-07-27 2002-07-16 ノキア ネットワークス オサケ ユキチュア 線形化回路の設定方法
US6553211B1 (en) * 1998-08-20 2003-04-22 Lucent Technologies Inc. Method and apparatus for adjusting pilot signal relative to input signal
US6052023A (en) * 1998-08-31 2000-04-18 Lucent Technologies Inc. Calibration system for feed forward distortion reduction system
JP4751508B2 (ja) * 2000-12-07 2011-08-17 株式会社日立国際電気 フィードフォワード型共通増幅装置
US7123086B2 (en) * 2003-05-07 2006-10-17 Powerwave Technologies, Inc. Feed forward amplifier employing positive feedback pilot generation
JP4431325B2 (ja) * 2003-05-26 2010-03-10 株式会社日立国際電気 増幅装置
JP4619825B2 (ja) * 2005-03-07 2011-01-26 株式会社日立国際電気 フィードフォワード歪補償増幅器
JP5057945B2 (ja) * 2007-12-03 2012-10-24 株式会社日立国際電気 歪補償増幅装置
CN103813418B (zh) * 2012-11-05 2017-06-20 华为终端有限公司 移动通信终端及其射频功率放大器控制方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580105A (en) * 1985-01-25 1986-04-01 At&T Bell Laboratories Automatic reduction of intermodulation products in high power linear amplifiers
JPH0777330B2 (ja) * 1988-02-03 1995-08-16 日本電信電話株式会社 フィードフォワード増幅器の自動調整回路
US4926134A (en) * 1988-12-29 1990-05-15 Westinghouse Electric Corp. Gain monitoring of distortion cancellation amplifiers in a feedforward linear amplifier
GB2238196A (en) * 1989-11-16 1991-05-22 Motorola Inc Feed forward amplifier with pre-distortion
CA2046413C (en) * 1990-07-11 1994-01-04 Shoichi Narahashi Feed-forward amplifier
US5307022A (en) * 1991-04-15 1994-04-26 Motorola, Inc. High dynamic range modulation independent feed forward amplifier network
JP2804195B2 (ja) * 1992-02-27 1998-09-24 日本無線株式会社 自動制御フィードフォワード非線形歪補償増幅器

Also Published As

Publication number Publication date
JP3320210B2 (ja) 2002-09-03
EP0685931A1 (de) 1995-12-06
DE69430423D1 (de) 2002-05-23
EP0685931B1 (de) 2002-04-17
JPH0851319A (ja) 1996-02-20
US5515000A (en) 1996-05-07

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