SG124247A1 - Feedforward amplifier with dual loop - Google Patents

Feedforward amplifier with dual loop

Info

Publication number
SG124247A1
SG124247A1 SG200206661A SG200206661A SG124247A1 SG 124247 A1 SG124247 A1 SG 124247A1 SG 200206661 A SG200206661 A SG 200206661A SG 200206661 A SG200206661 A SG 200206661A SG 124247 A1 SG124247 A1 SG 124247A1
Authority
SG
Singapore
Prior art keywords
distortion
amplifier
elimination circuit
dual loop
auxiliary
Prior art date
Application number
SG200206661A
Other languages
English (en)
Inventor
Yasunori Suzuki
Toshio Nojima
Original Assignee
Ntt Docomo 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 Ntt Docomo Inc filed Critical Ntt Docomo Inc
Publication of SG124247A1 publication Critical patent/SG124247A1/en

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
    • 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
    • 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
    • H03F2201/3218—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion the main amplifier or error amplifier being a feedforward amplifier

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
SG200206661A 2001-11-06 2002-11-05 Feedforward amplifier with dual loop SG124247A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001340534 2001-11-06

Publications (1)

Publication Number Publication Date
SG124247A1 true SG124247A1 (en) 2006-08-30

Family

ID=19154714

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200206661A SG124247A1 (en) 2001-11-06 2002-11-05 Feedforward amplifier with dual loop

Country Status (5)

Country Link
US (1) US6838934B2 (ko)
EP (1) EP1309082A3 (ko)
KR (1) KR100612741B1 (ko)
CN (1) CN1215727C (ko)
SG (1) SG124247A1 (ko)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6452366B1 (en) * 2000-02-11 2002-09-17 Champion Microelectronic Corp. Low power mode and feedback arrangement for a switching power converter
JP3910167B2 (ja) * 2003-09-25 2007-04-25 松下電器産業株式会社 増幅回路
EP1560328B1 (en) * 2004-01-28 2010-09-15 NTT DoCoMo, Inc. Multi-band feed-forward amplifier and adjustment method therefor
US7091781B2 (en) * 2004-10-29 2006-08-15 Motorola, Inc. Wideband feed forward linear power amplifier
US7308234B2 (en) 2005-01-19 2007-12-11 Northrop Grumman Corporation Feedforward spur cancellation approach using low IP amplifier
EP1732206B1 (en) * 2005-06-03 2007-09-26 NTT DoCoMo INC. Band selection type feed forward amplifier
CN100576767C (zh) * 2005-06-03 2009-12-30 株式会社Ntt都科摩 多频带用前馈放大器
JP2008270851A (ja) * 2007-04-16 2008-11-06 Hitachi Kokusai Electric Inc フィードフォワード増幅器
DE102008052172B4 (de) 2008-10-17 2014-01-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung zum Erzeugen eines Korrektursignals
KR102204678B1 (ko) 2014-12-11 2021-01-20 삼성전자주식회사 인버터 증폭기 기반의 이중 루프 레귤레이터 및 그에 따른 전압 레귤레이팅 방법
WO2021167508A1 (en) * 2020-02-21 2021-08-26 Telefonaktiebolaget Lm Ericsson (Publ) A feedforward amplifier
CN115941057B (zh) * 2023-03-15 2023-06-02 北京航空航天大学 一种具有误差提取和均衡功能的微波光子正交解调装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5977826A (en) * 1998-03-13 1999-11-02 Behan; Scott T. Cascaded error correction in a feed forward amplifier
EP1003278A2 (en) * 1998-11-18 2000-05-24 Lucent Technologies Inc. Nested feed forward distortion reduction system
EP1041712A2 (en) * 1999-03-31 2000-10-04 NTT Mobile Communications Network Inc. Feedforward amplifier

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304945A (en) * 1993-04-19 1994-04-19 At&T Bell Laboratories Low-distortion feed-forward amplifier
JPH0777330A (ja) 1993-09-06 1995-03-20 Harman Co Ltd 加熱調理器
KR100266817B1 (ko) * 1997-01-31 2000-09-15 윤종용 피드포워드방식의선형증폭장치및방법
US6166600A (en) * 1998-08-31 2000-12-26 Lucent Technologies Inc. Automatic gain and phase controlled feedforward amplifier without pilot signal
JP3613447B2 (ja) 1999-06-10 2005-01-26 株式会社エヌ・ティ・ティ・ドコモ 二重ループを持つフィードフォワード増幅器
JP3827130B2 (ja) 1999-03-31 2006-09-27 株式会社エヌ・ティ・ティ・ドコモ フィードフォワード増幅器
US6320461B1 (en) * 2000-05-12 2001-11-20 Jhong Sam Lee Ultra-linear feedforward RF power amplifier
WO2001091286A1 (en) 2000-05-25 2001-11-29 Koninklijke Philips Electronics N.V. Carrousel handshake
JP2001339251A (ja) * 2000-05-25 2001-12-07 Mitsubishi Electric Corp フィードフォワード増幅器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5977826A (en) * 1998-03-13 1999-11-02 Behan; Scott T. Cascaded error correction in a feed forward amplifier
EP1003278A2 (en) * 1998-11-18 2000-05-24 Lucent Technologies Inc. Nested feed forward distortion reduction system
EP1041712A2 (en) * 1999-03-31 2000-10-04 NTT Mobile Communications Network Inc. Feedforward amplifier

Also Published As

Publication number Publication date
US20030085759A1 (en) 2003-05-08
CN1444411A (zh) 2003-09-24
EP1309082A2 (en) 2003-05-07
KR100612741B1 (ko) 2006-08-18
US6838934B2 (en) 2005-01-04
KR20030038444A (ko) 2003-05-16
EP1309082A3 (en) 2004-01-07
CN1215727C (zh) 2005-08-17

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