DE69937021D1 - Verfahren zur Verbesserung eines Nutzsignals in einem Funkempfänger - Google Patents

Verfahren zur Verbesserung eines Nutzsignals in einem Funkempfänger

Info

Publication number
DE69937021D1
DE69937021D1 DE69937021T DE69937021T DE69937021D1 DE 69937021 D1 DE69937021 D1 DE 69937021D1 DE 69937021 T DE69937021 T DE 69937021T DE 69937021 T DE69937021 T DE 69937021T DE 69937021 D1 DE69937021 D1 DE 69937021D1
Authority
DE
Germany
Prior art keywords
improving
radio receiver
useful signal
useful
signal
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
DE69937021T
Other languages
English (en)
Other versions
DE69937021T2 (de
Inventor
Sabine Roth
Heinrich Schemmann
Thomas Schwanenberger
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Application granted granted Critical
Publication of DE69937021D1 publication Critical patent/DE69937021D1/de
Publication of DE69937021T2 publication Critical patent/DE69937021T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/109—Means associated with receiver for limiting or suppressing noise or interference by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3078—Circuits generating control signals for digitally modulated signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Circuits Of Receivers In General (AREA)
DE69937021T 1998-07-02 1999-06-21 Verfahren zur Verbesserung eines Nutzsignals in einem Funkempfänger Expired - Lifetime DE69937021T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19829500A DE19829500A1 (de) 1998-07-02 1998-07-02 Verfahren zur Verbesserung des Nutzsignals in einer Funkempfangseinheit
DE19829500 1998-07-02

Publications (2)

Publication Number Publication Date
DE69937021D1 true DE69937021D1 (de) 2007-10-18
DE69937021T2 DE69937021T2 (de) 2008-05-29

Family

ID=7872703

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19829500A Withdrawn DE19829500A1 (de) 1998-07-02 1998-07-02 Verfahren zur Verbesserung des Nutzsignals in einer Funkempfangseinheit
DE69937021T Expired - Lifetime DE69937021T2 (de) 1998-07-02 1999-06-21 Verfahren zur Verbesserung eines Nutzsignals in einem Funkempfänger

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19829500A Withdrawn DE19829500A1 (de) 1998-07-02 1998-07-02 Verfahren zur Verbesserung des Nutzsignals in einer Funkempfangseinheit

Country Status (6)

Country Link
US (1) US6370370B1 (de)
EP (1) EP0969601B1 (de)
JP (1) JP4510176B2 (de)
CN (1) CN1151609C (de)
CA (1) CA2276797C (de)
DE (2) DE19829500A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000307972A (ja) * 1999-04-26 2000-11-02 Mitsubishi Electric Corp 半導体集積回路
JP4608733B2 (ja) * 2000-05-10 2011-01-12 株式会社ニコン 焦点検出装置
US7710503B2 (en) 2000-09-25 2010-05-04 Thomson Licensing Apparatus and method for optimizing the level of RF signals based upon the information stored on a memory
MXPA03002489A (es) * 2000-09-25 2003-06-19 Thomson Licensing Sa APARATO Y METODO PARA OPTIMIZAR EL NIVEL DE SEnALES DE RADIOFRECUENCIA BASANDOSE EN LA INFORMACION ALMACENADA EN UNA MEMORIA.
US6694129B2 (en) 2001-01-12 2004-02-17 Qualcomm, Incorporated Direct conversion digital domain control
BR0206416A (pt) * 2001-01-12 2004-06-22 Qualcomm Inc Controle no domìnio digital de conversão direta
US6741844B2 (en) * 2001-11-27 2004-05-25 Motorola, Inc. Receiver for audio enhancement and method therefor
US7212586B2 (en) * 2002-01-18 2007-05-01 Broadcom Corporation Direct conversion RF transceiver for wireless communications
ATE371312T1 (de) * 2002-06-07 2007-09-15 Nxp Bv Empfangssignalpegelangabe
US20040014438A1 (en) * 2002-06-20 2004-01-22 Abraham Hasarchi System and method for excluding narrow band noise from a communication channel
US7460831B2 (en) 2002-06-20 2008-12-02 Dekolink Wireless Ltd. System and method for excluding narrow band noise from a communication channel
US7042221B2 (en) * 2002-07-31 2006-05-09 Syracuse University System and method for detecting a narrowband signal
US7596195B2 (en) * 2004-03-31 2009-09-29 Broadcom Corporation Bandpass filter with reversible IQ polarity to enable a high side or low side injection receiver architecture
US7603098B2 (en) * 2004-03-31 2009-10-13 Broadcom Corporation Programmable IF frequency filter for enabling a compromise between DC offset rejection and image rejection
US7778617B2 (en) * 2007-03-30 2010-08-17 Broadcom Corporation Three stage algorithm for automatic gain control in a receiver system
KR20150070788A (ko) * 2013-12-17 2015-06-25 한국전자통신연구원 광대역 ｒｆ 수신기
US11437957B2 (en) * 2021-02-01 2022-09-06 Qualcomm Incorporated Accelerated channel scanning with a two-point-modulated phase-locked loop

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7512401L (sv) * 1974-11-07 1976-05-10 Decca Ltd Dempsats for antenner
DE2914092C2 (de) * 1979-04-07 1983-02-10 Rohde & Schwarz GmbH & Co KG, 8000 München Anordnung zum Überwachen der Übersteuerung eines Hochfrequenz-Empfängers
JPS59210734A (ja) * 1983-05-16 1984-11-29 Toshiba Corp 受信装置
IL92021A (en) * 1988-10-24 1994-06-24 Hughes Aircraft Co Automatic control amplifier for spring frequency reception
US5001776A (en) * 1988-10-27 1991-03-19 Motorola Inc. Communication system with adaptive transceivers to control intermodulation distortion
JPH0338906A (ja) * 1989-07-05 1991-02-20 Pioneer Electron Corp 受信装置
JPH03214931A (ja) * 1990-01-19 1991-09-20 Matsushita Electric Ind Co Ltd 受信装置
US5339454A (en) * 1991-08-05 1994-08-16 Ford Motor Company Automatic gain control for RF amplifier
DE4304819C2 (de) * 1993-02-17 1994-11-17 Vdo Schindling Eingangsschaltung für einen Geradeausempfänger
DE4319457C2 (de) * 1993-06-11 1997-09-04 Blaupunkt Werke Gmbh Schaltungsanordnung zur Nachbarkanalerkennung und -unterdrückung in einem FM-Rundfunkempfänger
JP2821374B2 (ja) * 1994-08-31 1998-11-05 日本電気アイシーマイコンシステム株式会社 受信装置
JPH08149021A (ja) * 1994-11-22 1996-06-07 Nec Yamagata Ltd 受信機フロントエンド回路
SE9601620L (sv) * 1996-04-29 1997-10-30 Radio Design Innovation Tj Ab Anpassningsbar radiomottagarapparat

Also Published As

Publication number Publication date
JP4510176B2 (ja) 2010-07-21
CA2276797C (en) 2010-06-01
EP0969601B1 (de) 2007-09-05
EP0969601A3 (de) 2003-09-03
JP2000101372A (ja) 2000-04-07
CA2276797A1 (en) 2000-01-02
DE69937021T2 (de) 2008-05-29
EP0969601A2 (de) 2000-01-05
CN1243361A (zh) 2000-02-02
US6370370B1 (en) 2002-04-09
CN1151609C (zh) 2004-05-26
DE19829500A1 (de) 2000-01-13

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Legal Events

Date Code Title Description
8320 Willingness to grant licences declared (paragraph 23)
8364 No opposition during term of opposition