ATE194736T1 - Automatische kalibrierung der trägerunterdrückung und schleifenphase in einem kartesischen verstärker - Google Patents

Automatische kalibrierung der trägerunterdrückung und schleifenphase in einem kartesischen verstärker

Info

Publication number
ATE194736T1
ATE194736T1 AT95307038T AT95307038T ATE194736T1 AT E194736 T1 ATE194736 T1 AT E194736T1 AT 95307038 T AT95307038 T AT 95307038T AT 95307038 T AT95307038 T AT 95307038T AT E194736 T1 ATE194736 T1 AT E194736T1
Authority
AT
Austria
Prior art keywords
cartesic
repression
amplifier
carrier
transmitter
Prior art date
Application number
AT95307038T
Other languages
English (en)
Inventor
William James Whitmarsh
Simon Maurice Whittle
Original Assignee
Linear Modulation Tech
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 Linear Modulation Tech filed Critical Linear Modulation Tech
Application granted granted Critical
Publication of ATE194736T1 publication Critical patent/ATE194736T1/de

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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • H03D7/168—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages using a feedback loop containing mixers or demodulators
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
    • H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/57—Separate feedback of real and complex signals being present

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
AT95307038T 1994-10-03 1995-10-03 Automatische kalibrierung der trägerunterdrückung und schleifenphase in einem kartesischen verstärker ATE194736T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9419915A GB2293935B (en) 1994-10-03 1994-10-03 Automatic calibration of carrier suppression and loop phase in a cartesian amplifier

Publications (1)

Publication Number Publication Date
ATE194736T1 true ATE194736T1 (de) 2000-07-15

Family

ID=10762268

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95307038T ATE194736T1 (de) 1994-10-03 1995-10-03 Automatische kalibrierung der trägerunterdrückung und schleifenphase in einem kartesischen verstärker

Country Status (9)

Country Link
US (1) US5623226A (de)
EP (1) EP0706259B1 (de)
AT (1) ATE194736T1 (de)
DE (1) DE69517904T2 (de)
DK (1) DK0706259T3 (de)
ES (1) ES2151027T3 (de)
GB (1) GB2293935B (de)
GR (1) GR3034544T3 (de)
ZA (1) ZA958300B (de)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2301247A (en) * 1995-05-22 1996-11-27 Univ Bristol A cartesian loop transmitter amplifier
GB9521769D0 (en) * 1995-10-24 1996-01-03 Philips Electronics Nv Transmitter
GB2309342B (en) * 1996-01-18 2000-08-23 Motorola Israel Ltd Linear transmitter and method of operation
JP3930586B2 (ja) * 1996-07-26 2007-06-13 アジレント・テクノロジーズ・インク インピーダンス測定装置の帰還ループ安定化方法
US5894496A (en) * 1996-09-16 1999-04-13 Ericsson Inc. Method and apparatus for detecting and compensating for undesired phase shift in a radio transceiver
GB2326297B (en) * 1997-06-09 2002-03-20 Linear Modulation Tech Radio frequency signal processing and amplification in cartesian loop amplifiers
DE59810878D1 (de) * 1997-07-08 2004-04-08 Siemens Ag Sendeeinrichtung
GB9715278D0 (en) * 1997-07-18 1997-09-24 Cambridge Consultants Signal processing system
GB2329085B (en) * 1997-09-09 2002-06-12 Gec Marconi Comm Ltd RF transmitter
US5945876A (en) * 1997-09-26 1999-08-31 Ericsson Inc. Soft switching for Cartesian feedback loop control with a transmission system
SE512623C2 (sv) 1997-11-03 2000-04-10 Ericsson Telefon Ab L M Förfarande och anordning i ett telekommunikationsproblem
GB9817675D0 (en) * 1998-08-13 1998-10-07 Simoco Int Ltd Error correction in amplifiers
FI105612B (fi) * 1998-10-23 2000-09-15 Nokia Networks Oy Menetelmä ja kytkentä vaihevirheen korjaamiseksi tehovahvistimen linearisointisilmukassa
GB2349528B (en) * 1999-04-23 2004-05-05 Intek Global Technologies Ltd On-line calibration of linear amplifiers
GB2349994B (en) * 1999-05-10 2003-06-04 Intek Global Technologies Ltd Apparatus for producing a radio-frequency signal
DE19946669C2 (de) * 1999-09-29 2001-09-27 Rohde & Schwarz Verfahren zum Einstellen eines Phasenwinkels eines Phasenschiebers einer Sendeeinrichtung
DE19946668C2 (de) * 1999-09-29 2001-09-27 Rohde & Schwarz Sendeeinrichtung und Verfahren zu deren schneller Umschaltung
US6625424B1 (en) * 2000-03-21 2003-09-23 Koninklijke Philips Electronics N.V. Autocalibration of a transceiver through nulling of a DC-voltage in a receiver and injecting of DC-signals in a transmitter
US7184724B1 (en) 2000-04-18 2007-02-27 Microtune (Texas), L.P. System and method for frequency translation using an image reject mixer
FI109059B (fi) * 2001-02-21 2002-05-15 Nokia Corp Menetelmä lähettimen häiriöiden vähentämiseksi, lähetin ja radiolaite
US6760577B2 (en) 2001-03-29 2004-07-06 Maxim Integrated Products, Inc. Alignment methods and apparatus for I/Q phase and amplitude error correction and image rejection improvement
GB2400250B (en) * 2003-03-31 2005-05-25 Motorola Inc Wireless communication unit and linearised transmitter circuit therefor
GB2403086B (en) * 2003-06-17 2005-07-20 Motorola Inc Cartesian loop transmitter and method of adjusting an output level of such transmitter
DE10340812A1 (de) * 2003-09-04 2005-04-28 Siemens Ag Lineare Verstärkeranordnung mit nichtlinearem Verstärkerelement für eine mobile Funkeinrichtung
KR100548407B1 (ko) * 2003-09-17 2006-02-02 엘지전자 주식회사 송신 ｄｃ 옵셋 제거방법
GB2408860B (en) * 2003-12-04 2006-12-20 Motorola Inc Wireless communication unit, linearised transmitter circuit and method of linearising therein
US7400864B2 (en) * 2004-04-15 2008-07-15 Interdigital Technology Corporation Method and apparatus for compensating for phase variations caused by activation of an amplifier
CN100461623C (zh) * 2004-08-27 2009-02-11 周宗善 双路取样环路负反馈方法及双路取样负反馈放大器
GB2442775B (en) * 2006-08-11 2009-04-29 Motorola Inc Linearised transmitter and method of operation for use in wireless communications
JP4578451B2 (ja) * 2006-09-15 2010-11-10 京セラ株式会社 電子機器
US7856048B1 (en) * 2006-11-20 2010-12-21 Marvell International, Ltd. On-chip IQ imbalance and LO leakage calibration for transceivers
GB2445776B (en) * 2007-01-17 2009-08-19 Motorola Inc Wireless communication unit, linearised transmitter circuit and method of linearising therein
US8175553B2 (en) 2007-01-17 2012-05-08 Motorola Solutions, Inc. Wireless communication unit, linearised transmitter circuit and method of linearising therein
US7719355B2 (en) * 2007-05-31 2010-05-18 Motorola, Inc. Method and apparatus for providing a Cartesian training waveform
GB2466072B (en) 2008-12-12 2011-03-23 Motorola Inc Adaptive cartesian loop transmitter for broadband and optimal loop stability adjustment
FR2954632B1 (fr) * 2009-12-23 2012-05-04 Thales Sa Dispositif de detection de signaux impulsionnels comprenant une fonction de detection d'emmelement d'impulsions.
CA3154262A1 (en) 2019-09-13 2021-03-18 Socovar S.E.C. Power amplifier linearizing module and power amplifier system equipped therewith

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4937535A (en) * 1988-12-29 1990-06-26 Genrad, Inc. Calibration method and programmable phase-gain amplifier
US5134718A (en) * 1990-10-31 1992-07-28 Motorola, Inc. Fast phase shift adjusting method and device for linear transmitter
US5066923A (en) * 1990-10-31 1991-11-19 Motorola, Inc. Linear transmitter training method and apparatus
GB2265270B (en) * 1992-03-02 1996-06-12 Motorola Ltd Rf power amplifier with linearization
SE470455B (sv) * 1992-08-24 1994-04-11 Ericsson Telefon Ab L M Anordning för kompensering av fasvridningen i återkopplingsslingan vid en kartesiskt återkopplad effektförstärkare
JPH0690264A (ja) * 1992-09-08 1994-03-29 Fujitsu Ltd 自動キャリア調整回路
GB9315985D0 (en) 1993-08-02 1993-09-15 Linear Modulation Tech Automatic calibration of the quadrature balance within a cartesian amplifier
GB2272589B (en) * 1992-11-16 1995-11-29 Linear Modulation Tech Automatic calibration of the quadrature balance within a cartesian amplifier
GB9224032D0 (en) 1992-11-16 1993-01-06 Linear Modulation Tech Automatic calibration of the quadrature balance within a cartesian amplifier
JP2500744B2 (ja) * 1993-04-09 1996-05-29 日本電気株式会社 負帰還増幅器
US5365190A (en) * 1993-05-03 1994-11-15 Duly Research, Inc. Feed-forward digital phase and amplitude correction system

Also Published As

Publication number Publication date
EP0706259B1 (de) 2000-07-12
DK0706259T3 (da) 2000-09-11
DE69517904T2 (de) 2000-11-09
DE69517904D1 (de) 2000-08-17
ZA958300B (en) 1997-07-23
GB2293935B (en) 1999-07-14
US5623226A (en) 1997-04-22
GB9419915D0 (en) 1994-11-16
EP0706259A1 (de) 1996-04-10
ES2151027T3 (es) 2000-12-16
GB2293935A (en) 1996-04-10
GR3034544T3 (en) 2001-01-31

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EEFA Change of the company name
REN Ceased due to non-payment of the annual fee