FI884019A - Korrigering av foerstaerkning och fas i en tvaovaegsmottagare. - Google Patents

Korrigering av foerstaerkning och fas i en tvaovaegsmottagare. Download PDF

Info

Publication number
FI884019A
FI884019A FI884019A FI884019A FI884019A FI 884019 A FI884019 A FI 884019A FI 884019 A FI884019 A FI 884019A FI 884019 A FI884019 A FI 884019A FI 884019 A FI884019 A FI 884019A
Authority
FI
Finland
Prior art keywords
tvaovaegsmottagare
foerstaerkning
fas
correction
Prior art date
Application number
FI884019A
Other languages
English (en)
Other versions
FI87711C (fi
FI884019A0 (fi
FI87711B (fi
Inventor
Kah-Seng Chung
Original Assignee
N.V.Philips' Gloeilampenfabrieken
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 N.V.Philips' Gloeilampenfabrieken filed Critical N.V.Philips' Gloeilampenfabrieken
Publication of FI884019A0 publication Critical patent/FI884019A0/fi
Publication of FI884019A publication Critical patent/FI884019A/fi
Application granted granted Critical
Publication of FI87711B publication Critical patent/FI87711B/fi
Publication of FI87711C publication Critical patent/FI87711C/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • 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
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H03D1/2245—Homodyne or synchrodyne circuits using two quadrature channels
    • H03D1/2254—Homodyne or synchrodyne circuits using two quadrature channels and a phase locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • H04B1/302—Circuits for homodyne or synchrodyne receivers for single sideband receivers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0001—Circuit elements of demodulators
    • H03D2200/0025—Gain control circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0001—Circuit elements of demodulators
    • H03D2200/0029—Loop circuits with controlled phase shift
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
FI884019A 1987-09-03 1988-08-31 Korrigering av foerstaerkning och fas i en tvaovaegsmottagare FI87711C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP87201667A EP0305603B1 (en) 1987-09-03 1987-09-03 Gain and phase correction in a dual branch receiver
EP87201667 1987-09-03

Publications (4)

Publication Number Publication Date
FI884019A0 FI884019A0 (fi) 1988-08-31
FI884019A true FI884019A (fi) 1989-03-04
FI87711B FI87711B (fi) 1992-10-30
FI87711C FI87711C (fi) 1993-02-10

Family

ID=8197662

Family Applications (1)

Application Number Title Priority Date Filing Date
FI884019A FI87711C (fi) 1987-09-03 1988-08-31 Korrigering av foerstaerkning och fas i en tvaovaegsmottagare

Country Status (9)

Country Link
US (1) US4953182A (fi)
EP (1) EP0305603B1 (fi)
JP (1) JP2603699B2 (fi)
KR (1) KR960015277B1 (fi)
AU (1) AU614702B2 (fi)
CA (1) CA1293302C (fi)
DE (1) DE3784717T2 (fi)
DK (1) DK484088A (fi)
FI (1) FI87711C (fi)

Families Citing this family (50)

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NL8802917A (nl) * 1988-11-28 1990-06-18 Philips Nv Direktmengende am-synchroonontvanger.
US5095536A (en) * 1990-03-23 1992-03-10 Rockwell International Corporation Direct conversion receiver with tri-phase architecture
US5122879A (en) * 1990-06-01 1992-06-16 Citizen Watch Co., Ltd. Television synchronous receiver with phase shifter for reducing interference from a lower adjacent channel
US5146338A (en) * 1990-08-06 1992-09-08 Thomson Consumer Electronics, Inc. Fixed rf agc of a television tuner for fm reception in a television receiver
US5093847A (en) * 1990-12-21 1992-03-03 Silicon Systems, Inc. Adaptive phase lock loop
US5230099A (en) * 1991-01-24 1993-07-20 Rockwell International Corporation System for controlling phase and gain errors in an i/q direct conversion receiver
US5249203A (en) * 1991-02-25 1993-09-28 Rockwell International Corporation Phase and gain error control system for use in an i/q direct conversion receiver
US5371902A (en) * 1991-09-25 1994-12-06 General Instrument Corporation Method and apparatus for recovering baseband signals from in-phase and quadrature-phase signal components having phase error therebetween
AT398658B (de) * 1992-03-06 1995-01-25 Siemens Ag Oesterreich Störschutzschaltung für demodulatoren digital modulierter signale
US5400363A (en) * 1993-05-07 1995-03-21 Loral Aerospace Corp. Quadrature compensation for orthogonal signal channels
US5351016A (en) * 1993-05-28 1994-09-27 Ericsson Ge Mobile Communications Inc. Adaptively self-correcting modulation system and method
EP0701745B1 (en) * 1993-06-04 1999-09-15 Rca Thomson Licensing Corporation Direct conversion tuner
ZA95605B (en) * 1994-04-28 1995-12-20 Qualcomm Inc Method and apparatus for automatic gain control and dc offset cancellation in quadrature receiver
JP3478313B2 (ja) * 1995-01-25 2003-12-15 ソニー株式会社 受信機
KR960038686A (ko) * 1995-04-13 1996-11-21 김광호 단일 주파수에 의한 신호 송수신회로
FI951918A (fi) * 1995-04-21 1996-10-22 Nokia Mobile Phones Ltd Lähetin-vastaanotinlaite ja menetelmä kompleksien I/Q-signaalin synnyttämiseksi ja käsittelemiseksi
JPH09261101A (ja) * 1996-03-18 1997-10-03 General Res Of Electron Inc 受信機
JP3503722B2 (ja) * 1996-05-17 2004-03-08 パイオニア株式会社 多値ディジタル伝送システム
US5787362A (en) * 1996-07-08 1998-07-28 Nokia Mobile Phones Limited AM removal from FM signal generated by IQ modulator
US5768691A (en) * 1996-08-07 1998-06-16 Nokia Mobile Phones Limited Antenna switching circuits for radio telephones
US5937341A (en) * 1996-09-13 1999-08-10 University Of Washington Simplified high frequency tuner and tuning method
US5901173A (en) * 1996-12-09 1999-05-04 Raytheon Company Noise Estimator
GB2326038A (en) 1997-06-06 1998-12-09 Nokia Mobile Phones Ltd Signal level balancing in quadrature receiver
US5939916A (en) * 1997-12-23 1999-08-17 Northern Telecom Limited Phase shifter suitable for clock recovery systems
CN100508508C (zh) * 1999-01-19 2009-07-01 交互数字技术公司 相移键控接收机中振幅和相位不平衡的校正方法及相应信号平衡器
US6377620B1 (en) * 1999-01-19 2002-04-23 Interdigital Technology Corporation Balancing amplitude and phase
US6535560B1 (en) * 1999-06-03 2003-03-18 Ditrans Corporation Coherent adaptive calibration system and method
US6714776B1 (en) * 1999-09-28 2004-03-30 Microtune (Texas), L.P. System and method for an image rejecting single conversion tuner with phase error correction
US6704349B1 (en) * 2000-01-18 2004-03-09 Ditrans Corporation Method and apparatus for canceling a transmit signal spectrum in a receiver bandwidth
US7088765B1 (en) 2000-03-15 2006-08-08 Ndsu Research Foundation Vector calibration system
US6744829B1 (en) * 2000-09-21 2004-06-01 Koninklijke Philips Electronics N.V. Calibration of a quadrature receiver
US6807406B1 (en) * 2000-10-17 2004-10-19 Rf Micro Devices, Inc. Variable gain mixer circuit
CN100477489C (zh) 2002-08-02 2009-04-08 诺基亚公司 使用fft处理器的正交解调器
US7272375B2 (en) 2004-06-30 2007-09-18 Silicon Laboratories Inc. Integrated low-IF terrestrial audio broadcast receiver and associated method
US7813931B2 (en) * 2005-04-20 2010-10-12 QNX Software Systems, Co. System for improving speech quality and intelligibility with bandwidth compression/expansion
US8249861B2 (en) * 2005-04-20 2012-08-21 Qnx Software Systems Limited High frequency compression integration
US8086451B2 (en) 2005-04-20 2011-12-27 Qnx Software Systems Co. System for improving speech intelligibility through high frequency compression
US8311840B2 (en) * 2005-06-28 2012-11-13 Qnx Software Systems Limited Frequency extension of harmonic signals
US7546237B2 (en) * 2005-12-23 2009-06-09 Qnx Software Systems (Wavemakers), Inc. Bandwidth extension of narrowband speech
US8654885B2 (en) * 2006-06-06 2014-02-18 Qualcomm Incorporated Fast in-phase and quadrature imbalance calibration
US7917091B2 (en) * 2006-06-28 2011-03-29 Maxlinear, Inc. Method and apparatus for calibrating the sideband rejection of a receiver
US7912729B2 (en) 2007-02-23 2011-03-22 Qnx Software Systems Co. High-frequency bandwidth extension in the time domain
EP2157691A1 (en) * 2008-08-20 2010-02-24 ST-Ericsson Belgium NV Signal generation with cancelled harmonics
FI20086252A0 (fi) 2008-12-30 2008-12-30 Nokia Corp Radiovastaanotin
JP5188448B2 (ja) 2009-05-11 2013-04-24 中外炉工業株式会社 連続焼鈍炉
US9054938B2 (en) * 2010-05-28 2015-06-09 Intel Corporation Quadrature gain and phase imbalance correction
EP2752989A1 (en) * 2010-06-15 2014-07-09 Telefonaktiebolaget L M Ericsson (publ) Conversion circuit
EP2434641B1 (en) 2010-09-24 2012-12-05 Telefonaktiebolaget L M Ericsson (PUBL) Complex intermediate frequency mixer stage and calibration thereof
EP2434640B1 (en) * 2010-09-24 2012-12-05 Telefonaktiebolaget L M Ericsson (PUBL) Correction of imbalances in a complex intermediate frequency mixer
US8670738B2 (en) * 2011-09-19 2014-03-11 Mediatek Inc. Imbalance compensator for correcting mismatch between in-phase branch and quadrature branch, and related imbalance compensation method and direct conversion receiving apparatus thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476585A (en) * 1982-01-25 1984-10-09 International Telephone And Telegraph Corporation Baseband demodulator for FM signals
JPH063947B2 (ja) * 1983-03-16 1994-01-12 日本電気株式会社 自動利得制御回路
NL8301179A (nl) * 1983-04-01 1984-11-01 Philips Nv Ontvanger voor hf-signalen voorzien van een paar parallelle signaalwegen.
US4584710A (en) * 1984-11-13 1986-04-22 The United States Of America As Represented By The Secretary Of The Navy Coherent receiver phase and amplitude alignment circuit

Also Published As

Publication number Publication date
AU2180088A (en) 1989-03-09
CA1293302C (en) 1991-12-17
FI87711C (fi) 1993-02-10
US4953182A (en) 1990-08-28
FI884019A0 (fi) 1988-08-31
JP2603699B2 (ja) 1997-04-23
EP0305603B1 (en) 1993-03-10
DE3784717D1 (de) 1993-04-15
DK484088A (da) 1989-03-04
KR960015277B1 (ko) 1996-11-07
FI87711B (fi) 1992-10-30
JPS6472624A (en) 1989-03-17
DE3784717T2 (de) 1993-08-26
EP0305603A1 (en) 1989-03-08
DK484088D0 (da) 1988-08-31
KR890006006A (ko) 1989-05-18
AU614702B2 (en) 1991-09-05

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Legal Events

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MM Patent lapsed
MM Patent lapsed

Owner name: N.V. PHILIPS GLOEILAMPENFABRIEKEN