NO885195D0 - Anordning for kompensering av feil som opptrer i en kvadraturmodulator. - Google Patents

Anordning for kompensering av feil som opptrer i en kvadraturmodulator.

Info

Publication number
NO885195D0
NO885195D0 NO885195A NO885195A NO885195D0 NO 885195 D0 NO885195 D0 NO 885195D0 NO 885195 A NO885195 A NO 885195A NO 885195 A NO885195 A NO 885195A NO 885195 D0 NO885195 D0 NO 885195D0
Authority
NO
Norway
Prior art keywords
compensation
errors
operating
modulator
square
Prior art date
Application number
NO885195A
Other languages
English (en)
Other versions
NO885195L (no
NO170910C (no
NO170910B (no
Inventor
Bo Gosta Hedberg
Original Assignee
Ericsson Telefon Ab L M
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20370432&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO885195(D0) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of NO885195D0 publication Critical patent/NO885195D0/no
Publication of NO885195L publication Critical patent/NO885195L/no
Publication of NO170910B publication Critical patent/NO170910B/no
Publication of NO170910C publication Critical patent/NO170910C/no

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2202/00—Aspects of oscillators relating to reduction of undesired oscillations
    • H03B2202/08—Reduction of undesired oscillations originated from the oscillator in circuit elements external to the oscillator by means associated with the oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/50—Amplitude modulation by converting angle modulation to amplitude modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0058—Quadrature arrangements
    • 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
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
NO885195A 1987-11-27 1988-11-22 Anordning for kompensering av feil som opptrer i en kvadraturmodulator NO170910C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8704741A SE459774B (sv) 1987-11-27 1987-11-27 Anordning foer kompensering av fel upptraednnde i e n kvadraturmodulator

Publications (4)

Publication Number Publication Date
NO885195D0 true NO885195D0 (no) 1988-11-22
NO885195L NO885195L (no) 1989-05-29
NO170910B NO170910B (no) 1992-09-14
NO170910C NO170910C (no) 1992-12-23

Family

ID=20370432

Family Applications (1)

Application Number Title Priority Date Filing Date
NO885195A NO170910C (no) 1987-11-27 1988-11-22 Anordning for kompensering av feil som opptrer i en kvadraturmodulator

Country Status (7)

Country Link
US (1) US4890301A (no)
EP (1) EP0318444B2 (no)
DE (1) DE3868872D1 (no)
DK (1) DK172538B1 (no)
FI (1) FI92116C (no)
NO (1) NO170910C (no)
SE (1) SE459774B (no)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2653282B1 (fr) * 1989-10-18 1994-07-22 Alcatel Transmission Procede de correction numerique de non linearite d'une chaine d'emission, et dispositif de mise en óoeuvre de ce procede.
IT1236905B (it) * 1989-12-21 1993-04-26 Sistema per la messa a punto dei trasmettitori nei ponti radio digitali a grande capacita'
US5119399A (en) * 1990-09-28 1992-06-02 Hewlett-Packard Co. Quadrature measurement and calibration of a vector modulator
JPH05130156A (ja) * 1991-11-08 1993-05-25 Nec Corp 直交変調器
US5428837A (en) * 1993-01-13 1995-06-27 Anadigics, Inc. Method and apparatus for reducing local oscillator leakage in integrated circuit receivers
US5930301A (en) * 1996-06-25 1999-07-27 Harris Corporation Up-conversion mechanism employing side lobe-selective pre-distortion filter and frequency replica-selecting bandpass filter respectively installed upstream and downstream of digital-to-analog converter
US6181199B1 (en) * 1999-01-07 2001-01-30 Ericsson Inc. Power IQ modulation systems and methods
DE19934215C1 (de) * 1999-07-21 2001-03-29 Rohde & Schwarz Quadraturmischer mit adaptiver Fehlerkompensation
GB2357202B (en) * 1999-12-09 2004-04-14 Ericsson Telefon Ab L M Receiver circuit
US20030003891A1 (en) * 2001-07-02 2003-01-02 Nokia Corporation Method to improve I/Q-amplitude balance and receiver quadrature channel performance
US6700453B2 (en) 2002-06-18 2004-03-02 Nokia Corporation Amplitude imbalance compensation of quadrature modulator
US7460614B2 (en) * 2003-06-25 2008-12-02 Interdigital Technology Corporation Method and system for adjusting the amplitude and phase characteristics of real and imaginary signal components of complex signals processed by an analog radio transmitter
US10698095B1 (en) * 2014-10-17 2020-06-30 California Institute Of Technology Systems and methods and performing offset IQ modulation
RU206452U1 (ru) * 2021-02-05 2021-09-13 Олег Владимирович Смирнов Модулятор сигналов обратного рассеяния

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141134A (en) * 1961-07-31 1964-07-14 Eugene F Osborne Distortion compensation system, for a power frequency amplifier system having transport lags, utilizing heterodyne feedback
US3906401A (en) * 1974-09-03 1975-09-16 Bell Telephone Labor Inc Feedforward error correction in interferometer modulators
US4462001A (en) * 1982-02-22 1984-07-24 Canadian Patents & Development Limited Baseband linearizer for wideband, high power, nonlinear amplifiers
JPS5985166A (ja) * 1982-10-29 1984-05-17 Fujitsu Ltd 位相変調器
US4700151A (en) * 1985-03-20 1987-10-13 Nec Corporation Modulation system capable of improving a transmission system
JPS62142440A (ja) * 1985-12-17 1987-06-25 Fujitsu Ltd 変復調装置
DE3545006A1 (de) * 1985-12-19 1987-07-02 Philips Patentverwaltung Modulator

Also Published As

Publication number Publication date
US4890301A (en) 1989-12-26
DK658388A (da) 1989-05-28
SE8704741D0 (sv) 1987-11-27
EP0318444B1 (en) 1992-03-04
FI92116C (sv) 1994-09-26
DK658388D0 (da) 1988-11-25
SE8704741L (sv) 1989-05-28
DK172538B1 (da) 1998-11-30
FI884868A (fi) 1989-05-28
DE3868872D1 (de) 1992-04-09
NO885195L (no) 1989-05-29
SE459774B (sv) 1989-07-31
NO170910C (no) 1992-12-23
NO170910B (no) 1992-09-14
EP0318444B2 (en) 1995-03-22
FI92116B (sv) 1994-06-15
FI884868A0 (fi) 1988-10-21
EP0318444A1 (en) 1989-05-31

Similar Documents

Publication Publication Date Title
FI884063A0 (fi) Hydrokrackningskatalysatorer och -foerfaranden som anvaender icke-zeolitiska molekylsaoll.
FI893334A (fi) Trycksensitiva bindemedel som innehaoller en alkoxifunktionell kiselfoerening.
FI896138A0 (fi) Polyolpolyestrar som fuktighetsbarriaer foer livsmedel.
DK584089D0 (da) Quinuclidiner, deres anvendelse som laegemiddel og fremgangsmaade til deres fremstilling
FI853913A0 (fi) Farmaceutiska foereningar som antracyklinglykosider.
NO881164D0 (no) Substituerte 9-amino-tetrahydroakridiner og relaterte forbindelser, en fremgangsmaate for deres fremstilling og deres bruk som medikamenter.
NO885195D0 (no) Anordning for kompensering av feil som opptrer i en kvadraturmodulator.
FI883852A0 (fi) Vattensuspensioner av tixotropisk lera innehaollande alkalimetallfettsyrasalter som stabiliseringsaemnen.
DK349387A (da) Nitrofuranderivater samt fremgangsmaade til fremstilling deraf og anvendelse af forbindelserne som laegemiddel
FI902042A0 (fi) Bencement som innehaoller celltillvaextstimulans.
NO881084D0 (no) Fremgangsmaate for utledning av banedata som beskriver satelitter.
FI893189A (fi) Tetrahaloftalatestrar som brandskyddsvaetskor foer vissa hartser.
NO880984D0 (no) Anordning for plassering av en radioaktiv kilde i en formasjon som gjennomtrenges av et borehull.
NO904587D0 (no) Fremgangsmaate til fremstilling av bmy 21502 i stor skala.
FI882643A0 (fi) Foerfarande foer framstaellning av en silan- eller siloxanfoerening som innehaoller minst en cykloalkylring.
FI890033A (fi) Bildskaermanordning som innehaoller en vaogformsgenerator.
FI896156A0 (fi) Produktionslinje foer glasrutor som skall boejas.
FI890147A (fi) Aemnen som motverkar rytmstoerningar.
FI894072A (fi) Polypeptider anvaendbara som vaccin.
FI884926A (fi) Kopolymerbestrykningskompositioner som innehaoller sulfoalkylmonomeremulsionsmedel.
DK120889A (da) 3-(2,3,4,5,6-pentafluorphenoxy)-8-azabicyclooe3.2.1aaoctaner, en fremgangsmaade til deres fremstilling og deres anvendelse som medikamenter
NO873726L (no) Fremgangsmaate for pakking av en broenn.
NO902100D0 (no) Tyggegummi som inneholder glycerolmonolaurat.
ES293625Y (es) Dispositivo centrador para instrumentos de endodoncia.
NO884572D0 (no) Forseglingsanordning for kartonglukke.