NO20021481L - Sender- og mottagerinnretning med lukket kartesisk tilbakekoblingsslöyfe - Google Patents

Sender- og mottagerinnretning med lukket kartesisk tilbakekoblingsslöyfe

Info

Publication number
NO20021481L
NO20021481L NO20021481A NO20021481A NO20021481L NO 20021481 L NO20021481 L NO 20021481L NO 20021481 A NO20021481 A NO 20021481A NO 20021481 A NO20021481 A NO 20021481A NO 20021481 L NO20021481 L NO 20021481L
Authority
NO
Norway
Prior art keywords
quadrature
transmitter
feedback loop
closed
receiver device
Prior art date
Application number
NO20021481A
Other languages
English (en)
Other versions
NO20021481D0 (no
NO332732B1 (no
Inventor
Friedrich Lipp
Original Assignee
Rohde & Schwarz
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 Rohde & Schwarz filed Critical Rohde & Schwarz
Publication of NO20021481D0 publication Critical patent/NO20021481D0/no
Publication of NO20021481L publication Critical patent/NO20021481L/no
Publication of NO332732B1 publication Critical patent/NO332732B1/no

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
    • H03F1/345—Negative-feedback-circuit arrangements with or without positive feedback using hybrid or directional couplers
    • 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

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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Sendeinnretning (1) innbefattende en kvadraturmodulator (3) for kvadraturmodulasjon av en i-fasekomponenten (I) og so innbefatter en effektforsterker (9) koblet i en utgående krets med kvadraturmodulatoren (3). En kvadraturdemodulator (19) for kvadraturdemodulasjon av utgangssignalet til effektforsterkeren (9) er anordnet for en tilbakekoblingssløyfe. En første differensialforsterker (26) og en andre differensialforsterker (27) koblet i innkommende krets til kvadraturmodulatoren (3). Inngangssignalet og det tilbakekoblete kvadraturmodulerte signalet er tilført inngangene til nevnte differensialforsterkere (26,27). Når det omkobles fra en senderdrift til en senderavbruddsdrift kan utgangen til den første og andre differensialforsterkeren (26, 27) bli direkte forbundet med kompensasjonsinngangen (-) til den første eller andre differensialforsterkeren (26, 27) via en direkte likestrømssignalbane (32, 33), forbi kvadraturmodulatoren (3), effektforsterkeren (8) og kvadraturdemodulatoren (19).
NO20021481A 1999-09-29 2002-03-25 Sender- og mottagerinnretning med lukket kartesisk tilbakekoblingssloyfe NO332732B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19946668A DE19946668C2 (de) 1999-09-29 1999-09-29 Sendeeinrichtung und Verfahren zu deren schneller Umschaltung
PCT/EP2000/006030 WO2001024472A1 (de) 1999-09-29 2000-06-28 Sende-empfangseinrichtung mit geschlossener kartesischer rückkopplungsschleife

Publications (3)

Publication Number Publication Date
NO20021481D0 NO20021481D0 (no) 2002-03-25
NO20021481L true NO20021481L (no) 2002-03-25
NO332732B1 NO332732B1 (no) 2012-12-27

Family

ID=7923724

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20021481A NO332732B1 (no) 1999-09-29 2002-03-25 Sender- og mottagerinnretning med lukket kartesisk tilbakekoblingssloyfe

Country Status (5)

Country Link
US (1) US6977968B1 (no)
EP (1) EP1216558B1 (no)
DE (2) DE19946668C2 (no)
NO (1) NO332732B1 (no)
WO (1) WO2001024472A1 (no)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2397449B (en) * 2003-01-15 2007-02-28 Thales Plc Modulator
US7076698B2 (en) 2003-05-21 2006-07-11 Agere Systems, Inc. Vector monitor, related method of controlling a transmitter and transmitter employing the same
US7345531B2 (en) 2003-05-21 2008-03-18 Agere Systems Inc. Comparator circuit, related method of comparing a vector to comparison boundaries and transmitter employing the same
DE102004017528A1 (de) * 2004-04-08 2005-11-03 Infineon Technologies Ag Sendeanordnung und Verfahren zum Betreiben eines Verstärkers in einer Sendeanordnung
US7132885B2 (en) * 2005-03-23 2006-11-07 Aspendos Communications Low phase shift implementation of the baseband circuitry of a Cartesian feedback loop
US20060234627A1 (en) * 2005-04-18 2006-10-19 Dbspectra, Inc. Mobile radio combiner and multi-coupler unit
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.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0656714B1 (en) * 1993-11-30 2003-08-27 Nec Corporation Adaptive linearisation of a quadrature modulator
GB2293935B (en) * 1994-10-03 1999-07-14 Linear Modulation Tech Automatic calibration of carrier suppression and loop phase in a cartesian amplifier
US5832022A (en) * 1995-06-02 1998-11-03 Omnipoint Corporation Method and apparatus for controlling the modulation index of continuous phase modulated (CPM) signals
US5903823A (en) * 1995-09-19 1999-05-11 Fujitsu Limited Radio apparatus with distortion compensating function
GB9521769D0 (en) * 1995-10-24 1996-01-03 Philips Electronics Nv Transmitter
WO1998000908A1 (en) 1996-06-28 1998-01-08 Philips Electronics N.V. Circuit arrangement comprising a cartesian amplifier
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
GB9715278D0 (en) 1997-07-18 1997-09-24 Cambridge Consultants Signal processing system
US5959499A (en) * 1997-09-30 1999-09-28 Motorola, Inc. Predistortion system and method using analog feedback loop for look-up table training
FI105612B (fi) 1998-10-23 2000-09-15 Nokia Networks Oy Menetelmä ja kytkentä vaihevirheen korjaamiseksi tehovahvistimen linearisointisilmukassa

Also Published As

Publication number Publication date
NO20021481D0 (no) 2002-03-25
DE50009052D1 (de) 2005-01-27
WO2001024472A1 (de) 2001-04-05
EP1216558B1 (de) 2004-12-22
EP1216558A1 (de) 2002-06-26
US6977968B1 (en) 2005-12-20
DE19946668A1 (de) 2001-05-03
DE19946668C2 (de) 2001-09-27
NO332732B1 (no) 2012-12-27

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Legal Events

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