DE3879259T2 - Rundfunksender. - Google Patents

Rundfunksender.

Info

Publication number
DE3879259T2
DE3879259T2 DE88302588T DE3879259T DE3879259T2 DE 3879259 T2 DE3879259 T2 DE 3879259T2 DE 88302588 T DE88302588 T DE 88302588T DE 3879259 T DE3879259 T DE 3879259T DE 3879259 T2 DE3879259 T2 DE 3879259T2
Authority
DE
Germany
Prior art keywords
radio station
radio
station
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
DE88302588T
Other languages
English (en)
Other versions
DE3879259D1 (de
Inventor
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 Equipment Ltd
Original Assignee
Racal Communications Equipment 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 Equipment Ltd filed Critical Racal Communications Equipment Ltd
Publication of DE3879259D1 publication Critical patent/DE3879259D1/de
Application granted granted Critical
Publication of DE3879259T2 publication Critical patent/DE3879259T2/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/20—Measurement of non-linear distortion
DE88302588T 1987-04-28 1988-03-24 Rundfunksender. Expired - Fee Related DE3879259T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8709998A GB2204202B (en) 1987-04-28 1987-04-28 Radio transmitters

Publications (2)

Publication Number Publication Date
DE3879259D1 DE3879259D1 (de) 1993-04-22
DE3879259T2 true DE3879259T2 (de) 1993-10-07

Family

ID=10616461

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3854763T Expired - Fee Related DE3854763T2 (de) 1987-04-28 1988-03-24 Verfahren zum Überprüfen eines Verstärkers zur Feststellung von durch Intermodulationsprodukte verursachte Verzerrungscharakteristiken.
DE88302588T Expired - Fee Related DE3879259T2 (de) 1987-04-28 1988-03-24 Rundfunksender.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE3854763T Expired - Fee Related DE3854763T2 (de) 1987-04-28 1988-03-24 Verfahren zum Überprüfen eines Verstärkers zur Feststellung von durch Intermodulationsprodukte verursachte Verzerrungscharakteristiken.

Country Status (4)

Country Link
US (1) US4890300A (de)
EP (2) EP0289130B1 (de)
DE (2) DE3854763T2 (de)
GB (2) GB2204202B (de)

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FR2642243B1 (fr) * 1989-01-24 1991-04-19 Labo Electronique Physique Circuit de predistorsion adaptative
ATE156066T1 (de) * 1989-05-30 1997-08-15 Canon Kk Tintenstrahlkopf
JPH03145346A (ja) * 1989-10-31 1991-06-20 Nec Corp 自動車電話システム
IT1236905B (it) * 1989-12-21 1993-04-26 Sistema per la messa a punto dei trasmettitori nei ponti radio digitali a grande capacita'
US5251328A (en) * 1990-12-20 1993-10-05 At&T Bell Laboratories Predistortion technique for communications systems
GB9111926D0 (en) * 1991-06-04 1991-07-24 Nat Transcommunications Ltd An improved method of video noise reduction using non-linear pre/de-emphasis
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US5412691A (en) * 1991-06-28 1995-05-02 Digital Equipment Corporation Method and apparatus for equalization for transmission over a band-limited channel
GB2257860B (en) * 1991-07-06 1995-09-20 Racal Communications Syst Ltd Amplification systems
DE4134472C2 (de) * 1991-10-18 1994-01-27 Rohde & Schwarz Verfahren zum Messen des Klirrfaktors eines Wechselspannungssignales
US5266951A (en) * 1991-12-30 1993-11-30 Raytheon Company Analog to digital converter calibration system and method of operation
GB2265269B (en) * 1992-03-02 1995-08-30 Motorola Ltd Radio transmitter with linearization training sequence
DE69222634T2 (de) * 1992-07-10 1998-02-05 Thomcast System und Methode zur Korrektur des Tonträgers
FR2707127A1 (fr) * 1993-06-29 1995-01-06 Philips Laboratoire Electroniq Système de transmission numérique à prédisposition.
US6288814B1 (en) * 1994-05-19 2001-09-11 Ortel Corporation In-line predistorter for linearization of electronic and optical signals
US5523716A (en) * 1994-10-13 1996-06-04 Hughes Aircraft Company Microwave predistortion linearizer
US5748678A (en) * 1995-07-13 1998-05-05 Motorola, Inc. Radio communications apparatus
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
US6173161B1 (en) * 1996-09-25 2001-01-09 Lucent Technologies Inc. Signal improvement by predistortion/postdistortion programmable converter
US5987069A (en) * 1996-12-24 1999-11-16 Gte Government Systems Corporation Method and apparatus for variably allocating upstream and downstream communication spectra
CA2274718A1 (en) * 1996-12-24 1998-07-02 Gte Government Systems Corporation Symbol lock detector
US6549242B1 (en) * 1997-04-04 2003-04-15 Harris Corporation Combining adjacent TV channels for transmission by a common antenna
US5798674A (en) * 1997-04-08 1998-08-25 Raytheon Company Band Limited AM modulator using linear power amplification
KR100251561B1 (ko) 1997-06-19 2000-04-15 윤종용 디지털통신시스템의송신기선형화장치및방법
WO1999005784A1 (de) * 1997-07-28 1999-02-04 Rohde & Schwarz Gmbh & Co. Kg Messverfahren und messeinrichtung zum messen der verzerrung eines hochfrequenz-leistungsverstärkers und entzerrungsverfahren und entzerrungseinrichtung zum automatischen entzerren eines hochfrequenz-leistungsverstärkers
US6282247B1 (en) * 1997-09-12 2001-08-28 Ericsson Inc. Method and apparatus for digital compensation of radio distortion over a wide range of temperatures
US6239657B1 (en) 1998-03-27 2001-05-29 Rohde & Schwarz Gmbh & Co. Kg Method and device for measuring the distortion of a high-frequency power amplifier and method and means for automatically equalizing a high-frequency power amplifier
GB2339354B (en) 1998-07-02 2003-10-08 Wireless Systems Int Ltd A predistorter
GB2339917A (en) * 1998-07-21 2000-02-09 Ifr Limited Generating a multitone test signal
US6304594B1 (en) 1998-07-27 2001-10-16 General Dynamics Government Systems Corporation Interference detection and avoidance technique
US6212229B1 (en) 1998-12-16 2001-04-03 General Dynamics Government Systems Corporation Adaptive pre-emphasis technique
GB2347031B (en) 1999-02-12 2001-03-21 Wireless Systems Int Ltd Signal processing means
EP1151531B1 (de) 1999-02-12 2003-05-02 Wireless Systems International Limited Signalverarbeitungsvorrichtung
EP1067676B1 (de) * 1999-06-30 2009-06-17 Alcatel Lucent Verfahren zur breitbandigen Linearisierung von Leistungsverstärkern
US6724177B2 (en) 2000-12-14 2004-04-20 Tropian, Inc. Method and apparatus for accurate measurement of communications signals
US7058369B1 (en) 2001-11-21 2006-06-06 Pmc-Sierra Inc. Constant gain digital predistortion controller for linearization of non-linear amplifiers
US7248642B1 (en) * 2002-02-05 2007-07-24 Andrew Corporation Frequency-dependent phase pre-distortion for reducing spurious emissions in communication networks
US7197085B1 (en) 2002-03-08 2007-03-27 Andrew Corporation Frequency-dependent magnitude pre-distortion for reducing spurious emissions in communication networks
US7266159B2 (en) * 2002-03-08 2007-09-04 Andrew Corporation Frequency-dependent magnitude pre-distortion on non-baseband input signals for reducing spurious emissions in communication networks
DE10219340B4 (de) * 2002-04-30 2014-02-20 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Einrichtung zum Messen von Intermodulationsverzerrungen
US6985704B2 (en) * 2002-05-01 2006-01-10 Dali Yang System and method for digital memorized predistortion for wireless communication
US8380143B2 (en) 2002-05-01 2013-02-19 Dali Systems Co. Ltd Power amplifier time-delay invariant predistortion methods and apparatus
US8472897B1 (en) 2006-12-22 2013-06-25 Dali Systems Co. Ltd. Power amplifier predistortion methods and apparatus
US8811917B2 (en) 2002-05-01 2014-08-19 Dali Systems Co. Ltd. Digital hybrid mode power amplifier system
US7139327B2 (en) * 2002-06-10 2006-11-21 Andrew Corporation Digital pre-distortion of input signals for reducing spurious emissions in communication networks
US7251293B2 (en) * 2003-06-27 2007-07-31 Andrew Corporation Digital pre-distortion for the linearization of power amplifiers with asymmetrical characteristics
US7557654B2 (en) * 2004-10-28 2009-07-07 Mitsubishi Electric Corporation Linearizer
US7596326B2 (en) * 2005-10-27 2009-09-29 Emcore Corporation Distortion cancellation circuitry for optical receivers
CN101479956B (zh) 2006-04-28 2013-07-31 大力系统有限公司 用于无线通信的高效率线性化功率放大器
US7634198B2 (en) * 2006-06-21 2009-12-15 Emcore Corporation In-line distortion cancellation circuits for linearization of electronic and optical signals with phase and frequency adjustment
US20080130785A1 (en) * 2006-12-04 2008-06-05 Raytheon Company Frequency and temperature dependent pre-distortion
US9026067B2 (en) 2007-04-23 2015-05-05 Dali Systems Co. Ltd. Remotely reconfigurable power amplifier system and method
CN102017553B (zh) 2006-12-26 2014-10-15 大力系统有限公司 用于多信道宽带通信系统中的基带预失真线性化的方法和系统
US8274332B2 (en) 2007-04-23 2012-09-25 Dali Systems Co. Ltd. N-way Doherty distributed power amplifier with power tracking
KR101484796B1 (ko) * 2007-04-23 2015-01-20 달리 시스템즈 씨오. 엘티디. Ｎ-웨이 도허티 분산형 전력 증폭기
US8224266B2 (en) * 2007-08-30 2012-07-17 Dali Systems Co., Ltd. Power amplifier predistortion methods and apparatus using envelope and phase detector
US8213884B2 (en) 2007-12-07 2012-07-03 Dali System Co. Ltd. Baseband-derived RF digital predistortion
US8331879B2 (en) * 2008-10-15 2012-12-11 Research In Motion Limited Multi-dimensional Volterra series transmitter linearization
KR102136940B1 (ko) 2010-09-14 2020-07-23 달리 시스템즈 씨오. 엘티디. 원격으로 재구성가능한 분산 안테나 시스템 및 방법
US8711976B2 (en) 2011-05-12 2014-04-29 Andrew Llc Pre-distortion architecture for compensating non-linear effects
JP6270825B2 (ja) * 2012-05-22 2018-01-31 テクノロギアン トゥトキムスケスクス ヴェーテーテー オイ 機械共振器に基づく相互変調センサ・プラットフォーム
EP3236584B8 (de) 2016-04-18 2020-08-26 Rohde & Schwarz GmbH & Co. KG Verstärkervorrichtung für hochfrequenzsignale

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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
GB1529471A (en) * 1976-10-05 1978-10-18 British Broadcasting Corp Measurement of nonlinear distortion in signal transmission circuits
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
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
US4491973A (en) * 1982-05-19 1985-01-01 Idol Charles A Transmitter testing method
DE3224080A1 (de) * 1982-06-28 1983-12-29 Siemens AG, 1000 Berlin und 8000 München Verfahren zur ermittlung der daempfungsverzerrung und der gruppenlaufzeitverzerrung eines messobjekts, insbesondere einer datenuebertragungsstrecke
GB2153173B (en) * 1984-01-19 1987-09-30 Marconi Co Ltd High-frequency pre-distortion circuit for power amplifiers
FR2576725B1 (fr) * 1985-01-25 1988-07-08 Thomson Csf Amplificateur en classe ab et son correcteur de distorsion

Also Published As

Publication number Publication date
GB2245115A (en) 1991-12-18
GB2204202A (en) 1988-11-02
GB2245115B (en) 1992-03-11
DE3879259D1 (de) 1993-04-22
EP0499346A1 (de) 1992-08-19
EP0289130A2 (de) 1988-11-02
DE3854763D1 (de) 1996-01-18
EP0289130A3 (en) 1989-03-08
US4890300A (en) 1989-12-26
DE3854763T2 (de) 1996-09-05
GB9109898D0 (en) 1991-07-03
GB2204202B (en) 1991-11-27
EP0499346B1 (de) 1995-12-06
EP0289130B1 (de) 1993-03-17

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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