DK0382697T3 - Styrespændingsgenerator for et sendeanlæg til digitalt modulerede signaler - Google Patents

Styrespændingsgenerator for et sendeanlæg til digitalt modulerede signaler

Info

Publication number
DK0382697T3
DK0382697T3 DK90850048.1T DK90850048T DK0382697T3 DK 0382697 T3 DK0382697 T3 DK 0382697T3 DK 90850048 T DK90850048 T DK 90850048T DK 0382697 T3 DK0382697 T3 DK 0382697T3
Authority
DK
Denmark
Prior art keywords
voltage generator
control voltage
transmitter
modulated signals
digitally modulated
Prior art date
Application number
DK90850048.1T
Other languages
English (en)
Inventor
Erkki Kuisma
Original Assignee
Nokia Mobile Phones 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 Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Application granted granted Critical
Publication of DK0382697T3 publication Critical patent/DK0382697T3/da

Links

Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Selective Calling Equipment (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DK90850048.1T 1989-02-08 1990-02-05 Styrespændingsgenerator for et sendeanlæg til digitalt modulerede signaler DK0382697T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/308,247 US5123031A (en) 1989-02-08 1989-02-08 Control voltage generator in a transmitter arrangement for digitally modulated signals

Publications (1)

Publication Number Publication Date
DK0382697T3 true DK0382697T3 (da) 1995-09-18

Family

ID=23193184

Family Applications (1)

Application Number Title Priority Date Filing Date
DK90850048.1T DK0382697T3 (da) 1989-02-08 1990-02-05 Styrespændingsgenerator for et sendeanlæg til digitalt modulerede signaler

Country Status (7)

Country Link
US (1) US5123031A (da)
EP (1) EP0382697B1 (da)
JP (1) JP3103087B2 (da)
AT (1) ATE123194T1 (da)
DE (1) DE69019548T2 (da)
DK (1) DK0382697T3 (da)
ES (1) ES2075188T3 (da)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281668B (en) * 1993-08-20 1997-10-08 Motorola Inc Radio transmitter with power amplifier linearizer
GB2281461A (en) * 1993-08-27 1995-03-01 Nokia Telecommunications Oy Control of output power in radio transmitters using look-up table
US5524285A (en) * 1993-11-02 1996-06-04 Wray; Anthony J. Radio transmitter with power amplifier and linearization
IT1265271B1 (it) * 1993-12-14 1996-10-31 Alcatel Italia Sistema di predistorsione in banda base per la linearizzazione adattativa di amplificatori di potenza
FI97179C (fi) * 1994-06-15 1996-10-25 Nokia Mobile Phones Ltd Pulssitetun lähettimen lähtötehon säätö ja tehon verhokäyrän muotoilu
US5697073A (en) * 1994-08-26 1997-12-09 Motorola, Inc. Apparatus and method for shaping and power controlling a signal in a transmitter
GB2296145B (en) * 1994-12-15 1999-09-22 Nokia Mobile Phones Ltd Radio transmitters and methods of operation
FI98020C (fi) * 1995-06-06 1997-03-25 Nokia Mobile Phones Ltd Digitaalisen signaalin modulointimenetelmä ja modulaattori
FI101117B (fi) * 1995-09-22 1998-04-15 Nokia Mobile Phones Ltd Aikajakoisessa radiopuhelinjärjestelmässä toimiva radiopuhelin
US5650758A (en) * 1995-11-28 1997-07-22 Radio Frequency Systems, Inc. Pipelined digital predistorter for a wideband amplifier
FI112133B (fi) * 1996-03-29 2003-10-31 Nokia Corp Menetelmä kahdella eri taajuuusalueella toimivan radioviestinjärjestelmän suoramuunnoslähetin/vastaanottimen taajuuksien muodostamiseksi ja kahdella taajuusalueella toimivan radioviestinjärjestelmänsuoramuunnoslähetin/vastaanotin sekä edellisten käyttö matkaviestimessä
FI100286B (fi) * 1996-04-01 1997-10-31 Nokia Mobile Phones Ltd Lähetin/vastaanotin RF-signaalin lähettämiseksi ja vastaanottamiseksi kahdella taajuusalueella
US6185259B1 (en) 1996-06-12 2001-02-06 Ericsson Inc. Transmitter/receiver for GMSK and offset-QAM
US5815531A (en) * 1996-06-12 1998-09-29 Ericsson Inc. Transmitter for encoded data bits
FI106413B (fi) * 1996-07-11 2001-01-31 Nokia Mobile Phones Ltd Lineaarisen tehovahvistimen tehonsäätöpiiri
FI117841B (fi) * 1996-07-18 2007-03-15 Nokia Corp Järjestely radiotaajuisen signaalin lähettämiseksi ja vastaanottamiseksi kahdella taajuusalueella
FI963389A7 (fi) * 1996-08-30 1998-03-01 Nokia Corp Käsipuhelimen opastusjärjestelmä
FI106759B (fi) 1996-11-13 2001-03-30 Nokia Mobile Phones Ltd Matkaviestimen lähetystehon rajoitinjärjestelmä
FI107658B (fi) * 1997-06-02 2001-09-14 Nokia Mobile Phones Ltd Biasjänniteohjattuja rinnakkaisia aktiivikomponentteja
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
US6269093B1 (en) 1997-12-16 2001-07-31 Nokia Mobile Phones Limited Adaptive removal of disturbance in TDMA acoustic peripheral devices
FI981518L (fi) 1998-07-01 2000-01-02 Nokia Mobile Phones Ltd Tiedonsiirtomenetelmä ja radiojärjestelmä
US6194963B1 (en) 1998-11-18 2001-02-27 Ericsson Inc. Circuit and method for I/Q modulation with independent, high efficiency amplitude modulation
US6191653B1 (en) 1998-11-18 2001-02-20 Ericsson Inc. Circuit and method for linearizing amplitude modulation in a power amplifier
US6295442B1 (en) 1998-12-07 2001-09-25 Ericsson Inc. Amplitude modulation to phase modulation cancellation method in an RF amplifier
FR2799063B1 (fr) * 1999-09-24 2001-12-21 Centre Nat Etd Spatiales Emetteur de signaux radioelectriques modules a polarisation d'amplification auto-adaptee
US7020070B2 (en) 2001-04-10 2006-03-28 Telefonaktiebolaget L M Ericsson (Publ) Selectively controlled modulation distortion of an IQ-baseband signal
US7058139B2 (en) * 2001-11-16 2006-06-06 Koninklijke Philips Electronics N.V. Transmitter with transmitter chain phase adjustment on the basis of pre-stored phase information
AU2003265557A1 (en) * 2002-08-19 2004-03-03 The Regents Of The University Of California Fpga implementation of a digital qam modulator
EP1561278B1 (en) * 2002-11-04 2007-01-03 Research In Motion Limited Method and apparatus for regulating the transmitted power in multi-rate wireless communication systems
JP4791842B2 (ja) * 2006-02-14 2011-10-12 リズム時計工業株式会社 表示装置
FI20065783A0 (sv) * 2006-12-08 2006-12-08 Nokia Corp Signalfördistorsion i radiosändare

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705775A (en) * 1952-03-27 1955-04-05 Murray G Crosby Modulated wave amplifier
US3900823A (en) * 1973-03-28 1975-08-19 Nathan O Sokal Amplifying and processing apparatus for modulated carrier signals
US4146847A (en) * 1976-11-05 1979-03-27 Trio Kabushiki Kaisha Power limiting circuitry for use with power amplifier
US4291277A (en) * 1979-05-16 1981-09-22 Harris Corporation Adaptive predistortion technique for linearizing a power amplifier for digital data systems
US4462001A (en) * 1982-02-22 1984-07-24 Canadian Patents & Development Limited Baseband linearizer for wideband, high power, nonlinear amplifiers
FR2564658B1 (fr) * 1984-05-21 1990-11-30 Centre Nat Etd Spatiales Dispositif de linearisation du gain d'un amplificateur de puissance a transistor bipolaire polarise en classe c
US4700151A (en) * 1985-03-20 1987-10-13 Nec Corporation Modulation system capable of improving a transmission system

Also Published As

Publication number Publication date
ES2075188T3 (es) 1995-10-01
ATE123194T1 (de) 1995-06-15
EP0382697B1 (en) 1995-05-24
US5123031A (en) 1992-06-16
DE69019548D1 (de) 1995-06-29
DE69019548T2 (de) 1996-01-18
EP0382697A2 (en) 1990-08-16
JPH0362627A (ja) 1991-03-18
EP0382697A3 (en) 1991-01-02
JP3103087B2 (ja) 2000-10-23

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