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BR9800462A - Receptor com seletividade de canal analógico e digital - Google Patents

Receptor com seletividade de canal analógico e digital

Info

Publication number
BR9800462A
BR9800462A BR9800462A BR9800462A BR9800462A BR 9800462 A BR9800462 A BR 9800462A BR 9800462 A BR9800462 A BR 9800462A BR 9800462 A BR9800462 A BR 9800462A BR 9800462 A BR9800462 A BR 9800462A
Authority
BR
Brazil
Prior art keywords
analog
receiver
digital channel
channel selectivity
selectivity
Prior art date
Application number
BR9800462A
Other languages
English (en)
Inventor
Edwin A Suominen
Original Assignee
Alsthom Cge Alcatel
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 Alsthom Cge Alcatel filed Critical Alsthom Cge Alcatel
Publication of BR9800462A publication Critical patent/BR9800462A/pt

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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/0017—Digital filtering
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
    • H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/001—Channel filtering, i.e. selecting a frequency channel within the SDR system
    • 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
    • H04B1/26—Circuits for superheterodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)
BR9800462A 1997-01-27 1998-01-27 Receptor com seletividade de canal analógico e digital BR9800462A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/788,241 US5926513A (en) 1997-01-27 1997-01-27 Receiver with analog and digital channel selectivity

Publications (1)

Publication Number Publication Date
BR9800462A true BR9800462A (pt) 1999-06-29

Family

ID=25143878

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9800462A BR9800462A (pt) 1997-01-27 1998-01-27 Receptor com seletividade de canal analógico e digital

Country Status (6)

Country Link
US (1) US5926513A (pt)
EP (1) EP0855804A3 (pt)
JP (1) JPH10224243A (pt)
KR (1) KR19980070876A (pt)
BR (1) BR9800462A (pt)
CA (1) CA2224899C (pt)

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990087447A (ko) * 1996-03-01 1999-12-27 찰스 엘. 무어, 주니어 협대역 및 광대역 신호를 수신하기 위한2중모드 라디오 수신기
US6026129A (en) * 1996-03-27 2000-02-15 Matsushita Electric Industrial Co., Ltd. Radio receiving apparatus for receiving communication signals of different bandwidths
US6633550B1 (en) 1997-02-20 2003-10-14 Telefonaktiebolaget Lm Ericsson (Publ) Radio transceiver on a chip
JPH10313260A (ja) * 1997-05-13 1998-11-24 Matsushita Electric Ind Co Ltd 受信装置
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
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
US7295826B1 (en) * 1998-10-21 2007-11-13 Parkervision, Inc. Integrated frequency translation and selectivity with gain control functionality, and applications thereof
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US7027786B1 (en) 1998-10-21 2006-04-11 Parkervision, Inc. Carrier and clock recovery using universal frequency translation
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
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6389069B1 (en) * 1998-12-14 2002-05-14 Qualcomm Incorporated Low power programmable digital filter
US7209725B1 (en) 1999-01-22 2007-04-24 Parkervision, Inc Analog zero if FM decoder and embodiments thereof, such as the family radio service
US7006805B1 (en) 1999-01-22 2006-02-28 Parker Vision, Inc. Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service
FR2788904A1 (fr) 1999-01-27 2000-07-28 France Telecom Procede de traitement de signal pour radio logicielle et architecture de reception radio correspondante
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
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
US7110435B1 (en) 1999-03-15 2006-09-19 Parkervision, Inc. Spread spectrum applications of universal frequency translation
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
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
US7054296B1 (en) 1999-08-04 2006-05-30 Parkervision, Inc. Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
DE19949774B4 (de) * 1999-10-15 2006-08-17 Rohde & Schwarz Gmbh & Co. Kg Anordnung zur Meßdemodulation und Modulationsfehlermessung eines digital modulierten Empfangssignals
US7082171B1 (en) 1999-11-24 2006-07-25 Parkervision, Inc. Phase shifting applications of universal frequency translation
DE19960559A1 (de) * 1999-12-15 2001-07-05 Infineon Technologies Ag Empfangsvorrichtung für winkelmodulierte Signale
US6963734B2 (en) * 1999-12-22 2005-11-08 Parkervision, Inc. Differential frequency down-conversion using techniques of universal frequency translation technology
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
US7554508B2 (en) 2000-06-09 2009-06-30 Parker Vision, Inc. Phased array antenna applications on universal frequency translation
AU2001286475A1 (en) * 2000-08-11 2002-02-25 Novatel Wireless, Inc. Method and apparatus for a frequency agile variable bandwidth transceiver
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
US6940896B2 (en) * 2001-03-26 2005-09-06 The Boeing Company Method for seamlessly combining adjacent filters in a frequency channelizer
US7346134B2 (en) * 2001-05-15 2008-03-18 Finesse Wireless, Inc. Radio receiver
KR100381002B1 (ko) * 2001-05-31 2003-04-23 에스케이 텔레콤주식회사 무선통신 시스템에서의 펄스형 간섭 제거 장치
JP4032681B2 (ja) * 2001-08-27 2008-01-16 株式会社デンソー 同期検波方法及び装置並びにセンサ信号検出装置
US7085335B2 (en) * 2001-11-09 2006-08-01 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
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
US7095960B2 (en) * 2002-08-06 2006-08-22 Scientific-Atlanta, Inc. Spurious free dynamic range in optical communications systems
KR100651711B1 (ko) * 2002-11-26 2006-11-30 한국전자통신연구원 무선 통신 기기의 고주파 송수신기 장치 및 이를 이용한신호 처리 방법
US7010443B2 (en) * 2003-10-31 2006-03-07 Agilent Technologies, Inc. Noise measurement system and method
AU2003277662A1 (en) 2003-11-11 2005-05-26 Fujitsu Limited Semiconductor device, radio terminal and radio communication unit
US7526254B2 (en) * 2004-03-23 2009-04-28 Texas Instruments Incorporated Digital radio front end with minimized IF signal path
US7272375B2 (en) 2004-06-30 2007-09-18 Silicon Laboratories Inc. Integrated low-IF terrestrial audio broadcast receiver and associated method
US8073398B2 (en) * 2006-03-24 2011-12-06 Nortel Networks Limited Method and apparatus for adaptive channel utilisation
EP2477336A1 (en) * 2009-09-11 2012-07-18 Mitsumi Electric Co., Ltd. Signal processing device and signal processing method
EP2445138B1 (fr) * 2010-10-22 2015-07-15 The Swatch Group Research and Development Ltd. Unité de traitement de données, et récepteur de signaux comprenant l'unité de traitement de données
US8805312B2 (en) * 2011-04-06 2014-08-12 Texas Instruments Incorporated Methods, circuits, systems and apparatus providing audio sensitivity enhancement in a wireless receiver, power management and other performances
US9515860B2 (en) * 2014-12-30 2016-12-06 Hughes Network Systems, Llc Wideband and narrowband receiver
US9998158B2 (en) 2015-05-27 2018-06-12 Finesse Wireless, Inc. Cancellation of spurious intermodulation products produced in nonlinear channels by frequency hopped signals and spurious signals
CN105915198B (zh) * 2016-04-11 2018-08-28 国家电网公司 一种模拟数字混合滤波方法
RU181983U1 (ru) * 2016-12-29 2018-07-31 Открытое акционерное общество "Научно-производственное объединение Ангстрем" Приемное устройство с увеличенным динамическим диапазоном
US10691836B2 (en) * 2017-04-28 2020-06-23 University Of South Florida System and method for switched-capacitor based side-channel countermeasures
CN110768706B (zh) * 2019-10-25 2025-02-14 福建福启网络科技有限公司 一种自适应多载波、多选频、多选带的无线直放站

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4551688A (en) * 1984-05-23 1985-11-05 Rockwell International Corporation Delay compensated automatic gain control
US4893316A (en) * 1985-04-04 1990-01-09 Motorola, Inc. Digital radio frequency receiver
GB2176356A (en) * 1985-06-12 1986-12-17 Philips Electronic Associated Method of, and demodulator for, digitally demodulating an ssb signal
US5020092A (en) * 1989-06-23 1991-05-28 Motorola, Inc. Dual-bandwidth cellular telephone
US4972455A (en) * 1989-06-23 1990-11-20 Motorola, Inc. Dual-bandwidth cellular telephone
US5052027A (en) * 1989-12-22 1991-09-24 Comsat Laboratories Programmable noise bandwidth reduction by means of digital averaging
NZ314629A (en) * 1991-01-17 2000-08-25 Gen Hospital Corp Use trans-splicing ribozymes to prepare medicaments for gene therapies
US5396520A (en) * 1992-07-29 1995-03-07 Dial Page Lp Digital RF receiver
KR950013612B1 (ko) * 1992-12-29 1995-11-13 재단법인한국전자통신연구소 중심주파수 가변 채널필터를 채택한 디지탈 수신장치
US5392044A (en) * 1993-03-08 1995-02-21 Motorola, Inc. Method and apparatus for digitizing a wide frequency bandwidth signal
FR2702902B1 (fr) * 1993-03-15 1995-04-21 Alcatel Radiotelephone Récepteur numérique à fréquence intermédiaire et procédé de filtrage en bande de base mis en Óoeuvre dans ce récepteur.
US5375146A (en) * 1993-05-06 1994-12-20 Comsat Corporation Digital frequency conversion and tuning scheme for microwave radio receivers and transmitters
WO1995010889A1 (en) * 1993-10-14 1995-04-20 Ericsson Ge Mobile Communications Inc. Adaptive bandwidth receiver
US5640385A (en) * 1994-01-04 1997-06-17 Motorola, Inc. Method and apparatus for simultaneous wideband and narrowband wireless communication
US5537435A (en) * 1994-04-08 1996-07-16 Carney; Ronald Transceiver apparatus employing wideband FFT channelizer with output sample timing adjustment and inverse FFT combiner for multichannel communication network
US5592480A (en) * 1995-03-13 1997-01-07 Carney; Ronald R. Wideband wireless basestation making use of time division multiple-access bus having selectable number of time slots and frame synchronization to support different modulation standards
US5640698A (en) * 1995-06-06 1997-06-17 Stanford University Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion
US5640416A (en) * 1995-06-07 1997-06-17 Comsat Corporation Digital downconverter/despreader for direct sequence spread spectrum communications system
KR0149940B1 (ko) * 1995-09-01 1999-05-15 양승택 신호 처리기를 이용한 협대역 간이 무선용 선형화기
US5661487A (en) * 1995-12-26 1997-08-26 Hughes Missile Systems Company Digital center line filter

Also Published As

Publication number Publication date
CA2224899C (en) 2001-04-17
CA2224899A1 (en) 1998-07-27
EP0855804A2 (en) 1998-07-29
JPH10224243A (ja) 1998-08-21
US5926513A (en) 1999-07-20
KR19980070876A (ko) 1998-10-26
EP0855804A3 (en) 2001-12-05

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Legal Events

Date Code Title Description
TC Change of name
HHT Entry of change of name and/or headquarter and transfer of application, patent and certificate of addition of invention: republication

Free format text: ALTERADO DE: ALCATEL ALSTHOM COMPAGNIE GENERALE D ELECTRICITE REFERENCIA RPI NO 1495 DE 31.08.1999 - COD. 25.4 ITEM DESPACHO

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1891 DE 03/04/2007.