DE69212924T2 - Verstärkungssysteme - Google Patents

Verstärkungssysteme

Info

Publication number
DE69212924T2
DE69212924T2 DE69212924T DE69212924T DE69212924T2 DE 69212924 T2 DE69212924 T2 DE 69212924T2 DE 69212924 T DE69212924 T DE 69212924T DE 69212924 T DE69212924 T DE 69212924T DE 69212924 T2 DE69212924 T2 DE 69212924T2
Authority
DE
Germany
Prior art keywords
reinforcement systems
reinforcement
systems
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 - Fee Related
Application number
DE69212924T
Other languages
English (en)
Other versions
DE69212924D1 (de
Inventor
Gary Victor Dent
Christopher John Andrews
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.)
Racal Communications Systems Ltd
Original Assignee
Racal Communications Systems 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 Racal Communications Systems Ltd filed Critical Racal Communications Systems Ltd
Publication of DE69212924D1 publication Critical patent/DE69212924D1/de
Application granted granted Critical
Publication of DE69212924T2 publication Critical patent/DE69212924T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/438—Separate feedback of amplitude and phase signals being present
DE69212924T 1991-07-06 1992-06-04 Verstärkungssysteme Expired - Fee Related DE69212924T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9114646A GB2257860B (en) 1991-07-06 1991-07-06 Amplification systems

Publications (2)

Publication Number Publication Date
DE69212924D1 DE69212924D1 (de) 1996-09-26
DE69212924T2 true DE69212924T2 (de) 1997-03-27

Family

ID=10697951

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69212924T Expired - Fee Related DE69212924T2 (de) 1991-07-06 1992-06-04 Verstärkungssysteme

Country Status (4)

Country Link
US (1) US5262734A (de)
EP (1) EP0522706B1 (de)
DE (1) DE69212924T2 (de)
GB (1) GB2257860B (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09199948A (ja) * 1996-01-12 1997-07-31 Fujitsu Ltd 非線形補償回路
US5732333A (en) * 1996-02-14 1998-03-24 Glenayre Electronics, Inc. Linear transmitter using predistortion
US6246865B1 (en) * 1997-02-04 2001-06-12 Samsung Electronics Co., Ltd. Device and method for controlling distortion characteristic of predistorter
US6072364A (en) * 1997-06-17 2000-06-06 Amplix Adaptive digital predistortion for power amplifiers with real time modeling of memoryless complex gains
FR2766638B1 (fr) 1997-07-24 1999-09-24 Alsthom Cge Alcatel Dispositif de linearisation d'amplificateurs d'emission
GB2339354B (en) * 1998-07-02 2003-10-08 Wireless Systems Int Ltd A predistorter
US6449466B1 (en) * 1998-12-30 2002-09-10 Samsung Electronics Co., Ltd. Adaptive digital pre-distortion correction circuit for use in a transmitter in a digital communication system and method of operation
GB2347032A (en) * 1999-02-17 2000-08-23 Nds Ltd Distortion measurement using a test signal with a spectral hole
FI107100B (fi) 1999-03-26 2001-05-31 Nokia Networks Oy I/Q-modulaattorin vaihe- ja amplitudiepäbalanssin korjaus
US6493400B1 (en) 1999-04-19 2002-12-10 Bae Systems Aerospace Electronics Inc. Harmonic cancellation system
DE69940998D1 (de) * 1999-06-30 2009-07-30 Alcatel Lucent Verfahren zur breitbandigen Linearisierung von Leistungsverstärkern
DE19944558C2 (de) * 1999-09-17 2002-10-10 Bosch Gmbh Robert Verfahren zum Senden von Funksignalen und Sender zum Versenden eines Funksignals
DE19962341C1 (de) * 1999-12-23 2001-08-23 Bosch Gmbh Robert Sender zum Versenden von Signalen über Funkkanäle und Verfahren zum Senden von Signalen über Funkkanäle
DE19962340B4 (de) * 1999-12-23 2005-11-03 Robert Bosch Gmbh Sender zum Versenden von Signalen über Funkkanäle und Verfahren zum Senden von Signalen über Funkkanäle
SE517456C2 (sv) * 2000-09-07 2002-06-11 Ericsson Telefon Ab L M MCPA-kalibrering off-line
KR100408043B1 (ko) * 2001-09-21 2003-12-01 엘지전자 주식회사 디지탈 아이에프 기술을 적용한 전치 왜곡 방식의 디지털선형화기
US7058369B1 (en) 2001-11-21 2006-06-06 Pmc-Sierra Inc. Constant gain digital predistortion controller for linearization of non-linear amplifiers
US8224268B2 (en) * 2009-01-21 2012-07-17 Texas Instruments Incorporated Transmitter linearization
US8829920B2 (en) 2012-05-31 2014-09-09 International Business Machines Corporation Power amplification of a multi-tone test signal
US20140378067A1 (en) * 2013-06-24 2014-12-25 T-Mobile Usa, Inc. Communication infrastructure interference detection

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1381597A (en) * 1971-07-22 1975-01-22 Marconi Co Ltd High frequency amplifier arrangements
GB1419519A (en) * 1972-10-02 1975-12-31 Pye Ltd Correcting amplifier non-linearity
US4025855A (en) * 1976-04-30 1977-05-24 General Aviation Electronics, Inc. Multi-channel R.F. transducer with channel selector coupled to selected channel filter
FR2371817B1 (fr) * 1976-11-19 1980-09-05 Thomson Csf Dispositif correcteur de distorsion des etages d'amplification transistorises a large bande et amplificateur comportant de tels dispositifs
US4165493A (en) * 1978-04-17 1979-08-21 Rockwell International Corporation Protected amplifier apparatus
US4291277A (en) * 1979-05-16 1981-09-22 Harris Corporation Adaptive predistortion technique for linearizing a power amplifier for digital data systems
US4238855A (en) * 1979-09-19 1980-12-09 Rca Corporation Parallel operation of multiple TV transmitters
FR2482799A1 (fr) * 1980-05-14 1981-11-20 Lgt Lab Gen Telecomm Dispositif de precorrection de produits de non linearite et systeme de transmission de signaux de television comportant de tel dispositif
US4422047A (en) * 1981-11-23 1983-12-20 E-Systems, Inc. Solid state autotune power amplifier
FR2517494A1 (fr) * 1981-11-27 1983-06-03 Thomson Csf Dispositif de correction automatique d'intermodulation produite par un amplificateur de signaux haute frequence dans un emetteur a bande laterale unique
US4491973A (en) * 1982-05-19 1985-01-01 Idol Charles A Transmitter testing method
GB2153173B (en) * 1984-01-19 1987-09-30 Marconi Co Ltd High-frequency pre-distortion circuit for power amplifiers
US4561111A (en) * 1984-08-06 1985-12-24 Rockwell International Corporation Method of predistorting a single sideband system
FR2576725B1 (fr) * 1985-01-25 1988-07-08 Thomson Csf Amplificateur en classe ab et son correcteur de distorsion
JPS633524A (ja) * 1986-06-23 1988-01-08 Nippon Telegr & Teleph Corp <Ntt> 無線中継装置
GB2204202B (en) * 1987-04-28 1991-11-27 Racal Communications Equip Radio transmitters
DE69026653T2 (de) * 1989-07-11 1997-01-09 Harmonic Lightwaves Inc Optische Sender, linearisiert durch parametrische Rückkopplung
FR2652969A1 (fr) * 1989-10-06 1991-04-12 Philips Electronique Lab Dispositif de predistorsion pour systeme de transmission numerique.

Also Published As

Publication number Publication date
US5262734A (en) 1993-11-16
GB2257860A (en) 1993-01-20
EP0522706A2 (de) 1993-01-13
GB9114646D0 (en) 1991-08-21
DE69212924D1 (de) 1996-09-26
EP0522706A3 (en) 1993-06-09
EP0522706B1 (de) 1996-08-21
GB2257860B (en) 1995-09-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee