FI990679A - I/Q-modulaattorin tasajännitesiirtymän korjaus - Google Patents

I/Q-modulaattorin tasajännitesiirtymän korjaus Download PDF

Info

Publication number
FI990679A
FI990679A FI990679A FI990679A FI990679A FI 990679 A FI990679 A FI 990679A FI 990679 A FI990679 A FI 990679A FI 990679 A FI990679 A FI 990679A FI 990679 A FI990679 A FI 990679A
Authority
FI
Finland
Prior art keywords
modulator
offset correction
correction
offset
Prior art date
Application number
FI990679A
Other languages
English (en)
Swedish (sv)
Other versions
FI107212B (fi
FI990679A0 (fi
Inventor
Mika Raettoe
Original Assignee
Nokia Networks 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 Nokia Networks Oy filed Critical Nokia Networks Oy
Priority to FI990679A priority Critical patent/FI107212B/fi
Publication of FI990679A0 publication Critical patent/FI990679A0/fi
Priority to AU35617/00A priority patent/AU3561700A/en
Priority to EP00914213A priority patent/EP1166515A1/en
Priority to PCT/FI2000/000245 priority patent/WO2000059171A1/en
Publication of FI990679A publication Critical patent/FI990679A/fi
Application granted granted Critical
Publication of FI107212B publication Critical patent/FI107212B/fi
Priority to US09/962,585 priority patent/US6993091B2/en

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
    • H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
    • H04L27/364—Arrangements for overcoming imperfections in the modulator, e.g. quadrature error or unbalanced I and Q levels
    • 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
    • H03C3/406—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 using a feedback loop containing mixers or demodulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
FI990679A 1999-03-26 1999-03-26 I/Q-modulaattorin tasajännitesiirtymän korjaus FI107212B (fi)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI990679A FI107212B (fi) 1999-03-26 1999-03-26 I/Q-modulaattorin tasajännitesiirtymän korjaus
AU35617/00A AU3561700A (en) 1999-03-26 2000-03-24 Correction of dc-offset of i/q modulator
EP00914213A EP1166515A1 (en) 1999-03-26 2000-03-24 Correction of dc-offset of i/q modulator
PCT/FI2000/000245 WO2000059171A1 (en) 1999-03-26 2000-03-24 Correction of dc-offset of i/q modulator
US09/962,585 US6993091B2 (en) 1999-03-26 2001-09-26 Correction of DC-offset of I/Q modulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990679 1999-03-26
FI990679A FI107212B (fi) 1999-03-26 1999-03-26 I/Q-modulaattorin tasajännitesiirtymän korjaus

Publications (3)

Publication Number Publication Date
FI990679A0 FI990679A0 (fi) 1999-03-26
FI990679A true FI990679A (fi) 2000-09-27
FI107212B FI107212B (fi) 2001-06-15

Family

ID=8554292

Family Applications (1)

Application Number Title Priority Date Filing Date
FI990679A FI107212B (fi) 1999-03-26 1999-03-26 I/Q-modulaattorin tasajännitesiirtymän korjaus

Country Status (5)

Country Link
US (1) US6993091B2 (fi)
EP (1) EP1166515A1 (fi)
AU (1) AU3561700A (fi)
FI (1) FI107212B (fi)
WO (1) WO2000059171A1 (fi)

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US6801581B1 (en) * 2000-09-13 2004-10-05 Intel Corporation DC offset cancellation
GB2377103A (en) 2001-06-27 2002-12-31 Nokia Corp Tuning a station
DE60118986T2 (de) * 2001-08-24 2006-09-28 Siemens Ag Verfahren und Vorrichtung zur Verbesserung der Signalübertragungsqualität
US7356326B2 (en) * 2001-12-12 2008-04-08 Samsung Electronics Co., Ltd. Direct-conversion receiver for removing DC offset
KR100429981B1 (ko) * 2001-12-26 2004-05-03 엘지전자 주식회사 Ａｑｍ의 에러보상장치 및 방법
JP3712985B2 (ja) * 2002-02-22 2005-11-02 アンリツ株式会社 直交変調器のキャリアリーク調整点検出方法、そのキャリアリーク調整方法、及び直交変調装置
US7715836B2 (en) * 2002-09-03 2010-05-11 Broadcom Corporation Direct-conversion transceiver enabling digital calibration
US9065537B2 (en) * 2002-09-03 2015-06-23 Broadcom Corporation Method and system for calibrating a multi-mode, multi-standard transmitter and receiver
FR2844412B1 (fr) * 2002-09-05 2004-12-03 Thomson Licensing Sa Procede et dispositif de modulation d'une porteuse avec compensation d'erreur d'amplitude et de phase
US7010278B2 (en) * 2002-10-25 2006-03-07 Freescale Semiconductor, Inc. Sideband suppression method and apparatus for quadrature modulator using magnitude measurements
TWI251425B (en) * 2002-11-15 2006-03-11 Interdigital Tech Corp Compensating for analog radio component impairments to relax specifications
US7133649B2 (en) * 2002-12-24 2006-11-07 Hitachi Kokusai Electric, Inc. Negative feedback amplifier for transmitter, transmitter, and method of correcting error in the negative feedback amplifier
US7336931B2 (en) 2003-07-07 2008-02-26 Interuniversitair Microelektronica Centrum (Imec) Electrical device comprising analog frequency conversion circuitry and method for deriving characteristics thereof
EP1496610B1 (en) * 2003-07-07 2011-10-05 Imec Frequency converter with carrier self-mixing suppression
AU2003261964A1 (en) 2003-09-05 2005-03-29 Fujitsu Limited Offset compensation device
KR100518456B1 (ko) * 2003-10-10 2005-09-30 학교법인 포항공과대학교 전력 증폭기의 선형화를 위한 디지털 피드백 선형화 장치및 방법
DE102004039440A1 (de) * 2004-08-13 2006-02-23 Rohde & Schwarz Gmbh & Co. Kg Verfahren zur Ermittlung von Offset-Fehlern in Modulatoren und Demodulatoren
JP4459029B2 (ja) * 2004-11-22 2010-04-28 富士通株式会社 Ｏｆｄｍ無線受信機
EP1851927B1 (en) * 2005-02-24 2015-12-09 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Iq-modulator pre-distortion
US7653147B2 (en) * 2005-08-17 2010-01-26 Intel Corporation Transmitter control
JP4582360B2 (ja) * 2005-08-19 2010-11-17 日本電気株式会社 変調器のための１ビット信号変換を用いるｄｃオフセット除去回路
KR100950649B1 (ko) * 2005-12-08 2010-04-01 삼성전자주식회사 무선 송수신장치에서 자가 보상방법 및 장치
JP4758781B2 (ja) * 2006-01-31 2011-08-31 富士通株式会社 Ｄｃオフセット補正装置及びその方法
US7983327B2 (en) * 2006-08-28 2011-07-19 Samsung Electronics Co., Ltd. Method and system for providing digital adaptive predistortion in a subscriber station
US8284704B2 (en) * 2007-09-28 2012-10-09 Broadcom Corporation Method and system for utilizing undersampling for crystal leakage cancellation
US7941117B2 (en) * 2008-02-29 2011-05-10 Newport Media, Inc. Digital approach for image rejection correction in low intermediate frequency conversion tuner
FR2929066B1 (fr) * 2008-03-21 2010-03-12 Thales Sa Dispositif permettant de moduler un signal analogique dans une large bande de frequence a partir d'un signal numerique de modulation
US9014312B1 (en) * 2011-06-03 2015-04-21 L-3 Communications, Corp. Multi-band direct sampling transmitter
US8442150B1 (en) 2012-02-24 2013-05-14 National Instruments Corporation Measurement of transmitter impairments using offset local oscillators
US9231637B2 (en) * 2012-11-27 2016-01-05 Aviacomm Inc. Adaptive DC offset cancellation for direct conversion RF receivers
US20140269985A1 (en) * 2013-03-14 2014-09-18 Analog Devices Technology Dc bias estimation of a radio frequency mixer

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US24398A (en) * 1859-06-14 Hanging carriage-bodies
FR2641923B1 (fr) * 1989-01-19 1991-03-22 Alcatel Thomson Faisceaux Procede d'asservissement des parametres d'un modulateur a 2n etats de phase et d'amplitude, et dispositif de mise en oeuvre de ce procede
GB9211712D0 (en) * 1992-06-03 1992-07-15 Fujitsu Microelectronics Ltd Gm digital receive processing
US5381108A (en) * 1992-11-16 1995-01-10 Linear Modulation Technology Limited Automatic calibration of the quadrature balance within a cartesian amplifier
EP0608577A1 (en) 1993-01-28 1994-08-03 BELL TELEPHONE MANUFACTURING COMPANY Naamloze Vennootschap GMSK modulator with automatic calibration
US5351016A (en) * 1993-05-28 1994-09-27 Ericsson Ge Mobile Communications Inc. Adaptively self-correcting modulation system and method
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
JP3175580B2 (ja) * 1996-03-14 2001-06-11 日本電気株式会社 直交位相変調器の調整装置
FI117494B (fi) * 1996-11-29 2006-10-31 Nokia Corp Menetelmä digitaalisessa kvadratuurimodulaattorissa ja kvadratuuridemodulaattorissa, digitaalinen kvadratuurimodulaattori ja kvadratuuridemodulaattori
US5960040A (en) * 1996-12-05 1999-09-28 Raytheon Company Communication signal processors and methods
GB2329085B (en) 1997-09-09 2002-06-12 Gec Marconi Comm Ltd RF transmitter

Also Published As

Publication number Publication date
US6993091B2 (en) 2006-01-31
EP1166515A1 (en) 2002-01-02
US20020018531A1 (en) 2002-02-14
FI107212B (fi) 2001-06-15
WO2000059171A1 (en) 2000-10-05
AU3561700A (en) 2000-10-16
FI990679A0 (fi) 1999-03-26

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