DE69623909D1 - Verstärkereinrichtung - Google Patents

Verstärkereinrichtung

Info

Publication number
DE69623909D1
DE69623909D1 DE69623909T DE69623909T DE69623909D1 DE 69623909 D1 DE69623909 D1 DE 69623909D1 DE 69623909 T DE69623909 T DE 69623909T DE 69623909 T DE69623909 T DE 69623909T DE 69623909 D1 DE69623909 D1 DE 69623909D1
Authority
DE
Germany
Prior art keywords
amplifier means
amplifier
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
DE69623909T
Other languages
English (en)
Other versions
DE69623909T2 (de
Inventor
Ken Kumagai
Toshio Nojima
Shoichi Narahashi
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.)
NTT Docomo Inc
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
NTT Mobile Communications Networks 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 Nippon Telegraph and Telephone Corp, NTT Mobile Communications Networks Inc filed Critical Nippon Telegraph and Telephone Corp
Application granted granted Critical
Publication of DE69623909D1 publication Critical patent/DE69623909D1/de
Publication of DE69623909T2 publication Critical patent/DE69623909T2/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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
DE69623909T 1995-11-16 1996-11-15 Verstärkereinrichtung Expired - Lifetime DE69623909T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP29868495 1995-11-16
JP32336595 1995-12-12
JP32336495 1995-12-12

Publications (2)

Publication Number Publication Date
DE69623909D1 true DE69623909D1 (de) 2002-10-31
DE69623909T2 DE69623909T2 (de) 2003-06-05

Family

ID=27338240

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69623909T Expired - Lifetime DE69623909T2 (de) 1995-11-16 1996-11-15 Verstärkereinrichtung
DE69629855T Expired - Lifetime DE69629855T2 (de) 1995-11-16 1996-11-15 Verstärkervorrichtung

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69629855T Expired - Lifetime DE69629855T2 (de) 1995-11-16 1996-11-15 Verstärkervorrichtung

Country Status (3)

Country Link
US (1) US5796307A (de)
EP (2) EP0774833B1 (de)
DE (2) DE69623909T2 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339354B (en) * 1998-07-02 2003-10-08 Wireless Systems Int Ltd A predistorter
CA2281209A1 (en) * 1998-10-30 2000-04-30 Norman Gerard Ziesse Feedforward amplifier and method of amplifying signals
US6025762A (en) * 1999-01-11 2000-02-15 Cts Corporation Delay line incorporating a surface acoustic wave ladder filter and method of providing same
US6324407B1 (en) * 1999-02-26 2001-11-27 Motorola, Inc. Method and apparatus for signal transmission within a wireless communication system
JP2000252758A (ja) * 1999-03-01 2000-09-14 Fujitsu Ltd 位相補正増幅器及び該位相補正増幅器を用いたフィード・フォワード増幅器
DE19927952A1 (de) 1999-06-18 2001-01-04 Fraunhofer Ges Forschung Vorrichtung und Verfahren zum Vorverzerren eines über eine nicht-lineare Übertragungsstrecke zu übertragenden Übertragungssignals
DE69940998D1 (de) 1999-06-30 2009-07-30 Alcatel Lucent Verfahren zur breitbandigen Linearisierung von Leistungsverstärkern
US6392481B1 (en) 1999-11-30 2002-05-21 Nokia Networks Oy Method and apparatus for improved fed forward amplification
EP1113637B1 (de) * 1999-12-28 2006-04-05 NTT DoCoMo, Inc. Schaltung zur Komprimierung des dynamischen Bereich eines Signals
FR2809266B1 (fr) * 2000-05-19 2002-10-11 St Microelectronics Sa Procede et dispositif de controle du dephasage entre quatre signaux mutuellement en quadrature de phase
WO2001099293A2 (en) * 2000-06-20 2001-12-27 Powerwave Technologies, Inc. System and method for peak power reduction in multiple carrier communications systems
US7015773B2 (en) * 2001-01-31 2006-03-21 Ipr Licensing, Inc. Electronic phase shifter with enhanced phase shift performance
US7058369B1 (en) 2001-11-21 2006-06-06 Pmc-Sierra Inc. Constant gain digital predistortion controller for linearization of non-linear amplifiers
US7447268B2 (en) * 2004-03-31 2008-11-04 Intel Corporation OFDM system with per subcarrier phase rotation
US7649958B2 (en) * 2004-06-25 2010-01-19 Sige Semiconductor (Europe) Limited Transmit signal generator and method
US7308234B2 (en) * 2005-01-19 2007-12-11 Northrop Grumman Corporation Feedforward spur cancellation approach using low IP amplifier
KR100756041B1 (ko) * 2005-06-27 2007-09-07 삼성전자주식회사 믹서를 이용한 도허티 증폭장치 및 송신기
ATE480880T1 (de) * 2006-06-09 2010-09-15 Teledyne Defence Ltd Breitband-schaltmultiplexer
US8159390B2 (en) * 2007-03-29 2012-04-17 Raytheon Company Temporal CW nuller
US7945172B2 (en) * 2008-05-20 2011-05-17 Harmonic, Inc. Dispersion compensation circuitry and system for analog video transmission with direct modulated laser
US9093984B1 (en) * 2013-09-18 2015-07-28 Rockwell Collins, Inc. Phase shifter with true time delay
US9831833B1 (en) 2016-01-28 2017-11-28 Rockwell Collins, Inc. Power amplifier
US10491165B2 (en) 2018-03-12 2019-11-26 Psemi Corporation Doherty amplifier with adjustable alpha factor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725806A (en) * 1972-06-09 1973-04-03 Bell Telephone Labor Inc Distortion reduction in a repeatered transmission system
US3927379A (en) * 1975-01-08 1975-12-16 Bell Telephone Labor Inc Linear amplification using nonlinear devices and inverse sine phase modulation
US4394624A (en) * 1981-08-07 1983-07-19 The United States Of America As Represented By The Secretary Of The Navy Channelized feed-forward system
US4596043A (en) * 1982-03-29 1986-06-17 Motorola, Inc. High efficiency radio frequency signal amplifier for amplifying modulated radio frequency signals in a manner generating minimal splatter
US4943783A (en) * 1989-07-31 1990-07-24 Nippon Telegraph And Telephone Corporation Feed forward distortion correction circuit
US5363056A (en) * 1989-09-07 1994-11-08 Ortel Corporation Circuit for linearization of amplified electronic signals
IT1239472B (it) * 1990-04-09 1993-11-02 Sits Soc It Telecom Siemens Linearizzatore del tipo a predistorsione per amplificatori di potenza a microonde
CA2046413C (en) 1990-07-11 1994-01-04 Shoichi Narahashi Feed-forward amplifier
US5365187A (en) * 1993-10-29 1994-11-15 Hewlett-Packard Company Power amplifier utilizing the vector addition of two constant envelope carriers

Also Published As

Publication number Publication date
DE69629855D1 (de) 2003-10-09
EP0774833A1 (de) 1997-05-21
EP0774833B1 (de) 2002-09-25
EP1087520A3 (de) 2001-04-18
DE69629855T2 (de) 2004-07-15
DE69623909T2 (de) 2003-06-05
EP1087520B1 (de) 2003-09-03
EP1087520A2 (de) 2001-03-28
US5796307A (en) 1998-08-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition