DE60045221D1 - Direktumsatzempfänger und filter dafür - Google Patents

Direktumsatzempfänger und filter dafür

Info

Publication number
DE60045221D1
DE60045221D1 DE60045221T DE60045221T DE60045221D1 DE 60045221 D1 DE60045221 D1 DE 60045221D1 DE 60045221 T DE60045221 T DE 60045221T DE 60045221 T DE60045221 T DE 60045221T DE 60045221 D1 DE60045221 D1 DE 60045221D1
Authority
DE
Germany
Prior art keywords
receivers
filters
direct sales
sales
direct
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
DE60045221T
Other languages
English (en)
Inventor
Marc E Goldfarb
Wyn T Palmer
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.)
MediaTek Inc
Original Assignee
MediaTek 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 MediaTek Inc filed Critical MediaTek Inc
Application granted granted Critical
Publication of DE60045221D1 publication Critical patent/DE60045221D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
    • 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
DE60045221T 1999-09-30 2000-09-28 Direktumsatzempfänger und filter dafür Expired - Lifetime DE60045221D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/410,366 US6335656B1 (en) 1999-09-30 1999-09-30 Direct conversion receivers and filters adapted for use therein
PCT/US2000/026741 WO2001024352A1 (en) 1999-09-30 2000-09-28 Direct conversion receivers and filters adapted for use therein

Publications (1)

Publication Number Publication Date
DE60045221D1 true DE60045221D1 (de) 2010-12-23

Family

ID=23624414

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60045221T Expired - Lifetime DE60045221D1 (de) 1999-09-30 2000-09-28 Direktumsatzempfänger und filter dafür

Country Status (5)

Country Link
US (1) US6335656B1 (de)
EP (1) EP1216501B1 (de)
JP (1) JP3902740B2 (de)
DE (1) DE60045221D1 (de)
WO (1) WO2001024352A1 (de)

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EP0549299B1 (de) * 1991-12-20 2002-03-13 Resmed Limited Beatmungsgerät zur Erzeugung von kontinuierlichem positiven Atemwegdruck (CPAP)
US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6061551A (en) * 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US6560301B1 (en) * 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US7039372B1 (en) * 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6542722B1 (en) * 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6879817B1 (en) * 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US6873836B1 (en) * 1999-03-03 2005-03-29 Parkervision, Inc. Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7693230B2 (en) * 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US6665403B1 (en) * 1999-05-11 2003-12-16 Agere Systems Inc. Digital gyrator
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US7082171B1 (en) * 1999-11-24 2006-07-25 Parkervision, Inc. Phase shifting applications of universal frequency translation
US7292835B2 (en) * 2000-01-28 2007-11-06 Parkervision, Inc. Wireless and wired cable modem applications of universal frequency translation technology
US7010286B2 (en) * 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US7454453B2 (en) * 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US7010559B2 (en) * 2000-11-14 2006-03-07 Parkervision, Inc. Method and apparatus for a parallel correlator and applications thereof
US6469574B1 (en) * 2001-01-26 2002-10-22 Applied Micro Circuits Corporation Selectable equalization system and method
DE10131676A1 (de) * 2001-06-29 2003-01-16 Infineon Technologies Ag Empfängeranordnung mit Wechselstrom-Kopplung
US7072427B2 (en) * 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7085335B2 (en) * 2001-11-09 2006-08-01 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7062244B2 (en) 2001-12-28 2006-06-13 Texas Instruments Incorporated Speed-up mode implementation for direct conversion receiver
DE10219362B4 (de) * 2002-04-30 2009-12-31 Advanced Micro Devices, Inc., Sunnyvale Automatische Verstärkungssteuerung für einen Direktumsetzer und Verfahren zum Steuern der Verstärkung eines Basisbandsignals in einem derartigen Empfänger
US6975848B2 (en) * 2002-06-04 2005-12-13 Parkervision, Inc. Method and apparatus for DC offset removal in a radio frequency communication channel
US7321640B2 (en) * 2002-06-07 2008-01-22 Parkervision, Inc. Active polyphase inverter filter for quadrature signal generation
US7460584B2 (en) * 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US7379883B2 (en) * 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
JP4434597B2 (ja) * 2003-02-17 2010-03-17 ヤマハ株式会社 ノイズ除去回路
US7164901B2 (en) * 2003-12-24 2007-01-16 Agency For Science, Technology And Research DC offset-free RF front-end circuits and systems for direct conversion receivers
US7310508B2 (en) * 2004-03-31 2007-12-18 Broadcom Corporation Inline filter resistors
CN100369383C (zh) * 2004-12-17 2008-02-13 北京六合万通微电子技术有限公司 无线接收系统中直流失调的消除方法、装置及系统
DE102006018309A1 (de) * 2006-04-20 2007-10-25 Hella Kgaa Hueck & Co. Vorrichtung zum Entstören von kleinen Signalen
KR100782326B1 (ko) 2006-05-06 2007-12-06 삼성전자주식회사 직접 변환 수신기의 베이스 밴드용 아날로그 집적회로 및ｄｃ 오프셋 제거 방법
US8195096B2 (en) * 2006-07-13 2012-06-05 Mediatek Inc. Apparatus and method for enhancing DC offset correction speed of a radio device
US7504879B2 (en) 2006-08-24 2009-03-17 Itt Manufacturing Enterprises, Inc. Transconductor and filter circuit
US7622987B1 (en) 2007-01-25 2009-11-24 Pmc-Sierra, Inc. Pattern-based DC offset correction
US7711342B2 (en) * 2007-02-27 2010-05-04 Pine Valley Investments, Inc. Signal adjustment techniques
JP4952356B2 (ja) * 2007-04-23 2012-06-13 セイコーエプソン株式会社 液体検出装置、液体噴射装置および液体検出方法
JP2009260857A (ja) * 2008-04-21 2009-11-05 Koyo Electronics Ind Co Ltd 信号伝送系内での自動終端処理方式およびこの方式を備えた信号伝送端末
US8019311B2 (en) * 2008-06-27 2011-09-13 Ibiquity Digital Corporation Systems and methods for DC component recovery in a zero-IF radio receiver
US20110007845A1 (en) * 2009-07-07 2011-01-13 Yen-Horng Chen Communication receiver having three filters connected in series
KR101078324B1 (ko) * 2009-10-30 2011-10-31 (주)에프씨아이 컴플렉스 필터의 디씨 오프셋 제거회로
KR20130103173A (ko) * 2012-03-09 2013-09-23 삼성전자주식회사 무선통신시스템에서 수신 경로 캘리브레이션에 의한 지연을 줄이기 위한 방법 및 장치
US9312897B2 (en) * 2012-10-31 2016-04-12 Qualcomm Incorporated DC offset filter for wide band beamforming receivers

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857860A (en) * 1988-06-06 1989-08-15 Linear Technology Corporation Clock-sweepable low-pass filter having DC gain accuracy and reduced DC offset
IT1241345B (it) * 1990-12-11 1994-01-10 Sgs Thomson Microelectronics Circuito per la soppressione del rumore di commutazione fra due sorgenti di tensione, in paticolare per stadi audio di preamplificazione
US5451904A (en) * 1993-03-26 1995-09-19 Mitsumi Electric Co., Ltd. Amplifying circuit in which variable impedance circuit is used in negative feedback circuit
US5805212A (en) * 1994-11-17 1998-09-08 Canon Kabushiki Kaisha Vibration correcting apparatus controlling the gain of the control circuit
US5606277A (en) * 1995-06-23 1997-02-25 Linear Technology Corporation AC coupling loops for current-to-voltage transimpedance amplifiers and methods of using same
JP3073687B2 (ja) * 1996-02-09 2000-08-07 松下電器産業株式会社 フィルタに遮断周波数切替手段を備えた直接変換受信機
US5798670A (en) * 1996-04-29 1998-08-25 Itron, Inc. Active filter circuit

Also Published As

Publication number Publication date
WO2001024352A1 (en) 2001-04-05
US6335656B1 (en) 2002-01-01
EP1216501A4 (de) 2003-04-23
JP3902740B2 (ja) 2007-04-11
JP2003510936A (ja) 2003-03-18
EP1216501B1 (de) 2010-11-10
EP1216501A1 (de) 2002-06-26

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