FR2645688B1 - Modulateur en quadrature - Google Patents

Modulateur en quadrature

Info

Publication number
FR2645688B1
FR2645688B1 FR9004962A FR9004962A FR2645688B1 FR 2645688 B1 FR2645688 B1 FR 2645688B1 FR 9004962 A FR9004962 A FR 9004962A FR 9004962 A FR9004962 A FR 9004962A FR 2645688 B1 FR2645688 B1 FR 2645688B1
Authority
FR
France
Prior art keywords
quadrature modulator
quadrature
modulator
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 - Lifetime
Application number
FR9004962A
Other languages
English (en)
Other versions
FR2645688A1 (fr
Inventor
Jarmo Maekinen
Reino Talarmo
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.)
Nokia Oyj
Original Assignee
Telenokia Oy
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 Telenokia Oy filed Critical Telenokia Oy
Publication of FR2645688A1 publication Critical patent/FR2645688A1/fr
Application granted granted Critical
Publication of FR2645688B1 publication Critical patent/FR2645688B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
FR9004962A 1989-04-11 1990-04-10 Modulateur en quadrature Expired - Lifetime FR2645688B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI891717A FI81704C (fi) 1989-04-11 1989-04-11 Kvadraturmodulator.

Publications (2)

Publication Number Publication Date
FR2645688A1 FR2645688A1 (fr) 1990-10-12
FR2645688B1 true FR2645688B1 (fr) 1992-11-06

Family

ID=8528221

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9004962A Expired - Lifetime FR2645688B1 (fr) 1989-04-11 1990-04-10 Modulateur en quadrature

Country Status (7)

Country Link
US (1) US5012208A (fr)
AU (1) AU623240B2 (fr)
FI (1) FI81704C (fr)
FR (1) FR2645688B1 (fr)
GB (1) GB2232328B (fr)
HK (1) HK1006620A1 (fr)
SE (1) SE468455B (fr)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2887987B2 (ja) * 1991-10-23 1999-05-10 日本電気株式会社 ディジタル変調回路
US5371481A (en) * 1993-03-24 1994-12-06 Nokia Mobile Phones Ltd. Tuning techniques for I/Q channel signals in microwave digital transmission systems
IT1269854B (it) * 1993-05-28 1997-04-15 Ericsson Ge Mobile Communicat Modulatore autoregolante
US5351016A (en) * 1993-05-28 1994-09-27 Ericsson Ge Mobile Communications Inc. Adaptively self-correcting modulation system and method
US5373265A (en) * 1993-07-06 1994-12-13 At&T Corp. Modulator having oscillator for generating IF and RF signals by division and up-conversion
JP3565281B2 (ja) * 1993-10-08 2004-09-15 ソニー株式会社 受信機
US5396196A (en) * 1993-12-29 1995-03-07 At&T Corp. Quadrature modular with adaptive suppression of carrier leakage
US5574755A (en) * 1994-01-25 1996-11-12 Philips Electronics North America Corporation I/Q quadraphase modulator circuit
AU681676B2 (en) * 1994-06-06 1997-09-04 Ericsson Inc. Self-adjusting modulator
US5608761A (en) * 1994-12-09 1997-03-04 Motorola, Inc. Method, device, and radio for compensating for modulator frequency drift while allowing for data transmission
FR2729261A1 (fr) * 1995-01-11 1996-07-12 Alcatel Telspace Estimateur d'un defaut de fonctionnement d'un modulateur en quadrature et etage de modulation l'utilisant
US5995541A (en) * 1995-10-13 1999-11-30 Philips Electronics North America Corporation Method and apparatus for self-calibration and testing of ZPSK transmitter/receiver IC's
GB9521769D0 (en) * 1995-10-24 1996-01-03 Philips Electronics Nv Transmitter
GB2313504B (en) * 1996-05-23 2000-09-06 Motorola Gmbh Transmitter circuit and method of operation
FI117494B (fi) 1996-11-29 2006-10-31 Nokia Corp Menetelmä digitaalisessa kvadratuurimodulaattorissa ja kvadratuuridemodulaattorissa, digitaalinen kvadratuurimodulaattori ja kvadratuuridemodulaattori
GB2329560A (en) * 1997-07-28 1999-03-24 Roke Manor Research Bias control for radio transmitter
US6618096B1 (en) 1997-09-29 2003-09-09 Scientific-Atlanta, Inc. System and method for adaptively balancing quadrature modulators for vestigial-sideband generation
NO311780B1 (no) * 1997-12-23 2002-01-21 Nera Asa LO-kansellerende mikser
US6148047A (en) * 1998-05-06 2000-11-14 Philips Electronics North America Corporation DC offset compensation for zero if quadrature demodulator
US6169463B1 (en) * 1999-03-24 2001-01-02 Philips Electronic North America Corp. Quadrature modulator with set-and-forget carrier leakage compensation
US7382833B1 (en) * 2001-08-16 2008-06-03 Rockwell Collins, Inc. System for phase, gain, and DC offset error correction for a quadrature modulator
US6657510B2 (en) * 2001-11-27 2003-12-02 Harris Corporation Corrective phase quadrature modulator system and method
US6700453B2 (en) 2002-06-18 2004-03-02 Nokia Corporation Amplitude imbalance compensation of quadrature modulator
US7092454B2 (en) * 2002-08-14 2006-08-15 Intel Corporation Method and apparatus of compensating imbalance of a modulator
CN100384269C (zh) * 2004-02-25 2008-04-23 华为技术有限公司 一种补偿基站发信机非理想特性的系统及方法
WO2006035509A1 (fr) * 2004-09-29 2006-04-06 Nec Corporation Cicrcuit de calcul d'erreur pour melangeur
US7657236B2 (en) * 2005-08-16 2010-02-02 Broadcom Corporation Transmitter having reduced local oscillator (LO) leakage by determining direct LO coupling and baseband DC offset
WO2007020714A1 (fr) * 2005-08-19 2007-02-22 Nec Corporation Circuit de compensation de decalage en continu pour modulateur utilisant la conversion de signaux mono-bit
US7440732B2 (en) * 2005-08-26 2008-10-21 Broadcom Corporation Apparatus and method of local oscillator leakage cancellation
CN101043269B (zh) * 2006-03-22 2011-01-05 富士通株式会社 I-q正交调制发射机及其i-q路间相位偏置的监测装置和方法
US7941106B2 (en) 2007-05-10 2011-05-10 Skyworks Solutions, Inc. Systems and methods for controlling local oscillator feed-through
KR100961260B1 (ko) * 2007-12-04 2010-06-03 한국전자통신연구원 직교 변조 시스템에서 반송파 누설 보상 장치 및 그 방법
US8744385B2 (en) * 2009-09-01 2014-06-03 Provigent Ltd Efficient reduction of local oscillator leakage
RU2445731C1 (ru) * 2010-08-26 2012-03-20 Закрытое акционерное общество "СУЛАК" Способ уменьшения интенсивности переходных процессов на элементах выходного каскада ключевого сверхдлинноволнового радиопередающего устройства и радиопередатчик для реализации способа (варианты)
CN102497341B (zh) * 2011-11-15 2015-02-04 大唐移动通信设备有限公司 一种本振泄露校准方法及系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207525A (en) * 1966-12-12 1980-06-10 Westinghouse Electric Corp. Carrier control system for suppressed carrier modulators
US3500250A (en) * 1967-03-06 1970-03-10 Collins Radio Co Carrier suppression system for spectrum analysis
US4105977A (en) * 1977-03-10 1978-08-08 Motorola, Inc. Adaptive undesired signal canceller
US4243955A (en) * 1978-06-28 1981-01-06 Motorola, Inc. Regulated suppressed carrier modulation system
NL8301651A (nl) * 1983-05-10 1984-12-03 Philips Nv Menginrichting voorzien van eerste en tweede kwadratuurmengtrappen.
US4717894A (en) * 1986-10-23 1988-01-05 Hewlett-Packard Company Calibration of vector modulators using a scalar detector

Also Published As

Publication number Publication date
US5012208A (en) 1991-04-30
SE9001305D0 (sv) 1990-04-10
AU5303590A (en) 1990-10-18
SE468455B (sv) 1993-01-18
FR2645688A1 (fr) 1990-10-12
AU623240B2 (en) 1992-05-07
HK1006620A1 (en) 1999-03-05
FI891717A0 (fi) 1989-04-11
GB2232328A (en) 1990-12-05
FI81704B (fi) 1990-07-31
SE9001305L (sv) 1990-10-12
FI891717A (fi) 1990-07-31
FI81704C (fi) 1990-11-12
GB9008262D0 (en) 1990-06-13
GB2232328B (en) 1993-09-08

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