FI884019A0 - Korrigering av foerstaerkning och fas i en tvaovaegsmottagare. - Google Patents
Korrigering av foerstaerkning och fas i en tvaovaegsmottagare.Info
- Publication number
- FI884019A0 FI884019A0 FI884019A FI884019A FI884019A0 FI 884019 A0 FI884019 A0 FI 884019A0 FI 884019 A FI884019 A FI 884019A FI 884019 A FI884019 A FI 884019A FI 884019 A0 FI884019 A0 FI 884019A0
- Authority
- FI
- Finland
- Prior art keywords
- tvaovaegsmottagare
- foerstaerkning
- fas
- correction
- Prior art date
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP87201667 | 1987-09-03 | ||
EP87201667A EP0305603B1 (en) | 1987-09-03 | 1987-09-03 | Gain and phase correction in a dual branch receiver |
Publications (4)
Publication Number | Publication Date |
---|---|
FI884019A0 true FI884019A0 (fi) | 1988-08-31 |
FI884019A 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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
CN1061489C (zh) * | 1993-06-04 | 2001-01-31 | Rca.汤姆森许可公司 | 直接变频调谐器 |
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 |
WO2004015853A1 (en) | 2002-08-02 | 2004-02-19 | Nokia Corporation | Quadrature demodulator using a fft-processor |
US7272375B2 (en) | 2004-06-30 | 2007-09-18 | Silicon Laboratories Inc. | Integrated low-IF terrestrial audio broadcast receiver and associated method |
US8086451B2 (en) * | 2005-04-20 | 2011-12-27 | Qnx Software Systems Co. | System for improving speech intelligibility through high frequency compression |
US8249861B2 (en) * | 2005-04-20 | 2012-08-21 | Qnx Software Systems Limited | High frequency compression integration |
US7813931B2 (en) * | 2005-04-20 | 2010-10-12 | QNX Software Systems, Co. | System for improving speech quality and intelligibility with bandwidth compression/expansion |
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 |
EP2400660B1 (en) | 2010-06-15 | 2014-04-30 | 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)
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 |
-
1987
- 1987-09-03 EP EP87201667A patent/EP0305603B1/en not_active Expired - Lifetime
- 1987-09-03 DE DE8787201667T patent/DE3784717T2/de not_active Expired - Lifetime
-
1988
- 1988-08-31 DK DK484088A patent/DK484088A/da not_active Application Discontinuation
- 1988-08-31 FI FI884019A patent/FI87711C/fi not_active IP Right Cessation
- 1988-08-31 CA CA000576153A patent/CA1293302C/en not_active Expired - Lifetime
- 1988-09-02 JP JP63218645A patent/JP2603699B2/ja not_active Expired - Lifetime
- 1988-09-02 KR KR1019880011322A patent/KR960015277B1/ko not_active IP Right Cessation
- 1988-09-02 AU AU21800/88A patent/AU614702B2/en not_active Ceased
- 1988-09-06 US US07/241,171 patent/US4953182A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0305603A1 (en) | 1989-03-08 |
EP0305603B1 (en) | 1993-03-10 |
DK484088D0 (da) | 1988-08-31 |
KR960015277B1 (ko) | 1996-11-07 |
FI87711C (fi) | 1993-02-10 |
DE3784717D1 (de) | 1993-04-15 |
DE3784717T2 (de) | 1993-08-26 |
FI884019A (fi) | 1989-03-04 |
KR890006006A (ko) | 1989-05-18 |
DK484088A (da) | 1989-03-04 |
AU2180088A (en) | 1989-03-09 |
JP2603699B2 (ja) | 1997-04-23 |
CA1293302C (en) | 1991-12-17 |
FI87711B (fi) | 1992-10-30 |
AU614702B2 (en) | 1991-09-05 |
US4953182A (en) | 1990-08-28 |
JPS6472624A (en) | 1989-03-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: N.V. PHILIPS GLOEILAMPENFABRIEKEN |