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DE69808891D1 - Zwischenfrequenzsystem mit aktiven filtern - Google Patents

Zwischenfrequenzsystem mit aktiven filtern

Info

Publication number
DE69808891D1
DE69808891D1 DE69808891T DE69808891T DE69808891D1 DE 69808891 D1 DE69808891 D1 DE 69808891D1 DE 69808891 T DE69808891 T DE 69808891T DE 69808891 T DE69808891 T DE 69808891T DE 69808891 D1 DE69808891 D1 DE 69808891D1
Authority
DE
Germany
Prior art keywords
intermediate frequency
frequency system
active filters
filters
active
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
DE69808891T
Other languages
English (en)
Inventor
W Lampe
T Gillette
A Dolman
Antonio Montalvo
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.)
Ericsson Inc
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Application granted granted Critical
Publication of DE69808891D1 publication Critical patent/DE69808891D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H03G3/3068—Circuits generating control signals for both R.F. and I.F. stages
DE69808891T 1997-02-25 1998-02-11 Zwischenfrequenzsystem mit aktiven filtern Expired - Lifetime DE69808891D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/804,671 US5852772A (en) 1997-02-25 1997-02-25 Receiver IF system with active filters
PCT/US1998/002013 WO1998037629A1 (en) 1997-02-25 1998-02-11 Receiver if system with active filters

Publications (1)

Publication Number Publication Date
DE69808891D1 true DE69808891D1 (de) 2002-11-28

Family

ID=25189537

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69808891T Expired - Lifetime DE69808891D1 (de) 1997-02-25 1998-02-11 Zwischenfrequenzsystem mit aktiven filtern

Country Status (10)

Country Link
US (1) US5852772A (de)
EP (1) EP0965167B1 (de)
JP (1) JP2001513275A (de)
KR (1) KR20000075616A (de)
CN (1) CN1252185A (de)
AU (1) AU737478B2 (de)
BR (1) BR9807739A (de)
DE (1) DE69808891D1 (de)
PL (1) PL335355A1 (de)
WO (1) WO1998037629A1 (de)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2880955B2 (ja) * 1996-07-11 1999-04-12 埼玉日本電気株式会社 携帯電話装置
JP3475037B2 (ja) * 1997-03-14 2003-12-08 株式会社東芝 無線機
GB2331193B (en) * 1997-11-07 2001-07-11 Plessey Semiconductors Ltd Image reject mixer arrangements
US6112065A (en) * 1997-11-14 2000-08-29 Ericsson Inc. Low to higher if conversion for active filtered limited IF systems
US6308048B1 (en) * 1997-11-19 2001-10-23 Ericsson Inc. Simplified reference frequency distribution in a mobile phone
JPH11187463A (ja) * 1997-12-24 1999-07-09 Sony Corp 移動体無線受信機
US6088569A (en) * 1998-04-23 2000-07-11 Motorola, Inc. Method and apparatus for receiving a plurality of signals having different frequency bandwidths
WO2000051253A1 (fr) * 1999-02-25 2000-08-31 Mitsubishi Denki Kabushiki Kaisha Unite de poste de radio
GB9921813D0 (en) * 1999-09-16 1999-11-17 Mitel Semiconductor Ltd Frequency converter and radio frequency tuner
JP2001127660A (ja) * 1999-10-28 2001-05-11 Fujitsu Ltd 無線通信機及び受信系統の利得制御方法
US6721548B1 (en) * 1999-12-22 2004-04-13 Koninklijke Philips Electronics N.V. High dynamic range low ripple RSSI for zero-IF or low-IF receivers
KR100735946B1 (ko) * 1999-12-23 2007-07-06 코닌클리케 필립스 일렉트로닉스 엔.브이. 이미지 리젝션
US6934344B2 (en) * 2000-03-27 2005-08-23 Interdigital Technology Corporation Digital automatic gain control
DE60037722T2 (de) * 2000-05-17 2009-01-15 Sony Deutschland Gmbh AM Empfänger
US6532358B1 (en) 2000-08-03 2003-03-11 Tektronix, Inc. Overload distortion protection for a wideband receiver
GB2369504A (en) * 2000-11-28 2002-05-29 Ubinetics Ltd Gain control in a receiver using a parameter to determine if gain should be adjusted in order to bring a signal amplitude within a defined range
DE60315832T2 (de) * 2002-06-07 2008-05-15 Nxp B.V. Empfangssignalpegelangabe
US6892060B2 (en) * 2002-06-28 2005-05-10 Institute Of Microelectronics Fully integrated self-tuned image rejection downconversion system
GB0216450D0 (en) * 2002-07-16 2002-08-21 Zarlink Semiconductor Ltd Tuner
JP3675438B2 (ja) * 2002-10-31 2005-07-27 松下電器産業株式会社 高周波受信装置
US6952594B2 (en) * 2002-11-22 2005-10-04 Agilent Technologies, Inc. Dual-mode RF communication device
US7343146B2 (en) * 2004-08-13 2008-03-11 Nokia Corporation Single chip LNA and VCO having similar resonant circuit topology and using same calibration signal to compensate for process variations
US20060068740A1 (en) * 2004-09-24 2006-03-30 Matsushita Electric Industrial Co., Ltd. Receiver if circuit including image rejection mixer and active bandpass filter
GB2419756A (en) * 2004-10-29 2006-05-03 Zarlink Semiconductor Ltd Tuner suitable for 'Plug and Play' (PnP) applications
US7577414B2 (en) * 2005-01-27 2009-08-18 Analog Devices, Inc. Methods and apparatus for automatic gain control in broadband tuners
JP2006324795A (ja) * 2005-05-17 2006-11-30 Matsushita Electric Ind Co Ltd イメ−ジリジェクションミキサと帯域フィルタを有する受信ｉｆシステム
JP4705443B2 (ja) * 2005-09-21 2011-06-22 パナソニック株式会社 受信システム
JP4946372B2 (ja) * 2006-11-13 2012-06-06 パナソニック株式会社 フィルタ回路とこれを用いた受信装置及び電子機器
US20110053514A1 (en) * 2008-01-11 2011-03-03 Simoneau Joel B Rejection of a close-in-frequency interferer employing a log detector and classical down converter
FR2954632B1 (fr) * 2009-12-23 2012-05-04 Thales Sa Dispositif de detection de signaux impulsionnels comprenant une fonction de detection d'emmelement d'impulsions.
CN101977067A (zh) * 2010-11-04 2011-02-16 钜泉光电科技(上海)股份有限公司 低功耗电力载波通信电路及方法
WO2013125360A1 (ja) * 2012-02-20 2013-08-29 株式会社村田製作所 チューナブルフィルタ装置
JP5376017B2 (ja) * 2012-08-03 2013-12-25 三菱電機株式会社 検波対数増幅器
JP6295926B2 (ja) * 2014-11-14 2018-03-20 株式会社Ｊｖｃケンウッド 受信装置、受信方法
CN110545116A (zh) * 2019-07-16 2019-12-06 广州润芯信息技术有限公司 接收机双环路自动增益控制方法、电子设备、介质及装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186351A (en) * 1978-11-01 1980-01-29 Gte Sylvania Incorporated Signal strength indicator circuit for a radio receiver employing AGC
US4531235A (en) * 1983-06-20 1985-07-23 Motorola, Inc. Diversity signal strength indicator and site selection apparatus for using same
JPS5972236A (ja) * 1983-09-02 1984-04-24 Hitachi Ltd 受信装置
US4619002A (en) * 1984-07-02 1986-10-21 Motorola, Inc. Self-calibrating signal strength detector
EP0413311A3 (en) * 1989-08-16 1991-10-30 Hitachi, Ltd. A radio receiver and a radio receiver using a direct conversion
DE4011650A1 (de) * 1990-04-11 1991-10-17 Licentia Gmbh Regelschaltung fuer einen ueberlagerungsempfaenger
US5241702A (en) * 1990-09-06 1993-08-31 Telefonaktiebolaget L M Ericsson D.c. offset compensation in a radio receiver
NZ239733A (en) * 1990-09-21 1994-04-27 Ericsson Ge Mobile Communicat Mobile telephone diversity reception with predetect signal combination
JPH08181556A (ja) * 1994-12-21 1996-07-12 Toshiba Corp デジタルアナログ共用チューナ
CA2227869A1 (en) * 1995-08-04 1997-02-20 Mark D. Hedstrom Universal rf receiver

Also Published As

Publication number Publication date
KR20000075616A (ko) 2000-12-26
BR9807739A (pt) 2000-02-22
EP0965167B1 (de) 2002-10-23
CN1252185A (zh) 2000-05-03
AU6263598A (en) 1998-09-09
PL335355A1 (en) 2000-04-25
AU737478B2 (en) 2001-08-23
EP0965167A1 (de) 1999-12-22
JP2001513275A (ja) 2001-08-28
WO1998037629A1 (en) 1998-08-27
US5852772A (en) 1998-12-22

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Legal Events

Date Code Title Description
8332 No legal effect for de