SG44919A1 - A direct conversion receiver - Google Patents

A direct conversion receiver

Info

Publication number
SG44919A1
SG44919A1 SG1996009445A SG1996009445A SG44919A1 SG 44919 A1 SG44919 A1 SG 44919A1 SG 1996009445 A SG1996009445 A SG 1996009445A SG 1996009445 A SG1996009445 A SG 1996009445A SG 44919 A1 SG44919 A1 SG 44919A1
Authority
SG
Singapore
Prior art keywords
direct conversion
conversion receiver
receiver
direct
conversion
Prior art date
Application number
SG1996009445A
Other languages
English (en)
Inventor
Rishi Mohindra
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of SG44919A1 publication Critical patent/SG44919A1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Superheterodyne Receivers (AREA)
SG1996009445A 1992-11-26 1993-11-18 A direct conversion receiver SG44919A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92203653 1992-11-26

Publications (1)

Publication Number Publication Date
SG44919A1 true SG44919A1 (en) 1997-12-19

Family

ID=8211077

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996009445A SG44919A1 (en) 1992-11-26 1993-11-18 A direct conversion receiver

Country Status (6)

Country Link
US (1) US5584068A (ko)
JP (1) JP3793243B2 (ko)
KR (1) KR100355684B1 (ko)
DE (1) DE69329140T2 (ko)
HK (1) HK1012803A1 (ko)
SG (1) SG44919A1 (ko)

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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
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US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
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US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
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
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
FI112741B (fi) 1998-11-26 2003-12-31 Nokia Corp Menetelmä ja järjestely RF-signaalien lähettämiseksi ja vastaanottamiseksi tiedonsiirtojärjestelmien erilaisissa radiorajapinnoissa
EP1011191B1 (fr) * 1998-12-08 2009-01-07 Nxp B.V. Dispositif de filtrage pour éliminer une composante continue
KR20000044345A (ko) * 1998-12-30 2000-07-15 박태진 직교 진폭 변조 방식 송신기의 열화 제거 방법
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
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
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
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
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US6671332B1 (en) 1999-10-08 2003-12-30 Medtronic, Inc. Zero IF receiver with reduced AM detector
DE19961924A1 (de) * 1999-12-22 2001-07-05 Philips Corp Intellectual Pty Mobilfunkempfänger mit integriertem Rundfunkempfänger
EP1134889A1 (de) * 2000-03-13 2001-09-19 Infineon Technologies AG Anordnung und Verfahren zur Kompensation des Eingangs-Offsets eines Mischers
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US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US7050778B1 (en) * 2000-09-18 2006-05-23 Broadcom Corporation Direct conversion turner
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US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
JP2005064764A (ja) * 2003-08-08 2005-03-10 Alps Electric Co Ltd ダイレクトコンバージョンチューナ
US7702306B2 (en) * 2003-08-28 2010-04-20 Broadcom Corporation Apparatus and method for local oscillator calibration in mixer circuits
GB2419483B (en) * 2004-09-17 2008-12-24 Motorola Inc Demodulator for use in wireless communucations and receiver, method and terminal using it
GB2424326B (en) * 2005-03-18 2008-01-16 Motorola Inc Receiver for receipt and demodulation of a frequency modulated RF signal and method of operation therein
US8369820B2 (en) * 2007-09-05 2013-02-05 General Instrument Corporation Frequency multiplier device
KR101656266B1 (ko) * 2009-06-15 2016-09-12 삼성전자 주식회사 무선 통신 시스템의 직접변환 수신기에서 직류전압 오프셋을 보상하기 위한 장치 및 방법
US9024815B2 (en) 2011-05-27 2015-05-05 Brooks Engineering International, Llc Direct-to-digital software-defined radar
KR102103795B1 (ko) * 2013-08-23 2020-04-27 삼성디스플레이 주식회사 리플 보상 회로, 이를 이용한 표시 패널의 구동 방법 및 이를 포함하는 표시 장치
US20150267920A1 (en) * 2014-03-18 2015-09-24 Robert Zerby Schreffler Enigma Panel
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JP2552927B2 (ja) * 1990-01-26 1996-11-13 三菱電機株式会社 π／４シフトＱＰＳＫ信号の復調装置
IL102737A (en) * 1992-08-05 1995-11-27 Technion Res & Dev Foundation Return of modulated digital frequency signals to their original state
TW225067B (ko) * 1992-11-26 1994-06-11 Philips Electronics Nv

Also Published As

Publication number Publication date
DE69329140D1 (de) 2000-09-07
KR940012877A (ko) 1994-06-24
HK1012803A1 (en) 1999-08-06
JPH06224799A (ja) 1994-08-12
KR100355684B1 (ko) 2002-12-11
DE69329140T2 (de) 2001-03-29
JP3793243B2 (ja) 2006-07-05
US5584068A (en) 1996-12-10

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