BR8006228A - Sistema de transmissao,processo de multiplexacao de portadora em multiplos canais de comunicacao sobre um unico meio de comunicacao processo de filtragem de receptor,processo de construcao de sistema de transmissao de portadora multiplexada em multiplos canais,filtro receptor,e sistema de transmissao telefonica de portadora multiplexada - Google Patents

Sistema de transmissao,processo de multiplexacao de portadora em multiplos canais de comunicacao sobre um unico meio de comunicacao processo de filtragem de receptor,processo de construcao de sistema de transmissao de portadora multiplexada em multiplos canais,filtro receptor,e sistema de transmissao telefonica de portadora multiplexada

Info

Publication number
BR8006228A
BR8006228A BR8006228A BR8006228A BR8006228A BR 8006228 A BR8006228 A BR 8006228A BR 8006228 A BR8006228 A BR 8006228A BR 8006228 A BR8006228 A BR 8006228A BR 8006228 A BR8006228 A BR 8006228A
Authority
BR
Brazil
Prior art keywords
transport systems
multiple transport
systems
transmission
multiplexation
Prior art date
Application number
BR8006228A
Other languages
English (en)
Inventor
S Bench
Original Assignee
Anaconda Co
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 Anaconda Co filed Critical Anaconda Co
Publication of BR8006228A publication Critical patent/BR8006228A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/08—Arrangements for combining channels
BR8006228A 1979-01-29 1980-01-23 Sistema de transmissao,processo de multiplexacao de portadora em multiplos canais de comunicacao sobre um unico meio de comunicacao processo de filtragem de receptor,processo de construcao de sistema de transmissao de portadora multiplexada em multiplos canais,filtro receptor,e sistema de transmissao telefonica de portadora multiplexada BR8006228A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US766679A 1979-01-29 1979-01-29
PCT/US1980/000067 WO1980001633A1 (en) 1979-01-29 1980-01-23 Modified vestigial side band transmission system

Publications (1)

Publication Number Publication Date
BR8006228A true BR8006228A (pt) 1980-12-30

Family

ID=21727479

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8006228A BR8006228A (pt) 1979-01-29 1980-01-23 Sistema de transmissao,processo de multiplexacao de portadora em multiplos canais de comunicacao sobre um unico meio de comunicacao processo de filtragem de receptor,processo de construcao de sistema de transmissao de portadora multiplexada em multiplos canais,filtro receptor,e sistema de transmissao telefonica de portadora multiplexada

Country Status (4)

Country Link
EP (1) EP0023223A4 (pt)
JP (1) JPS56500198A (pt)
BR (1) BR8006228A (pt)
WO (1) WO1980001633A1 (pt)

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Publication number Priority date Publication date Assignee Title
US6091940A (en) 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
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
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
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
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
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
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
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
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
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
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
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
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
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
JP2005348174A (ja) * 2004-06-03 2005-12-15 Cocomo Mb Communications Inc 無線通信システム

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US2181499A (en) * 1937-11-10 1939-11-28 Hazeltine Corp Band-pass filter
US2247898A (en) * 1939-09-29 1941-07-01 Hazeltine Corp Band-pass filter, including trap circuit
CH271788A (fr) * 1947-04-16 1950-11-15 Cie Ind Telephones Installation de transmission à courants porteurs.
US2717956A (en) * 1952-11-29 1955-09-13 Bell Telephone Labor Inc Reduction of quadrature distortion
US3019335A (en) * 1959-09-14 1962-01-30 Nat Company Inc Large bandwidth low noise antenna circuit
US3266548A (en) * 1965-05-24 1966-08-16 Clark Equipment Co Method and means for demounting tires
US3742149A (en) * 1970-05-06 1973-06-26 Nippon Electric Co A frequency division multiplex microwave communication system using polarization division multiplex technique
US3794938A (en) * 1971-05-03 1974-02-26 Gen Aviat Electronics Inc Coupled bandstop/bandpass filter
DE2213962C3 (de) * 1972-03-22 1979-01-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Funkfeld in einem Richtfunksystem
DE2214583C3 (de) * 1972-03-24 1982-03-25 Siemens AG, 1000 Berlin und 8000 München Trägerfrequentes Nachrichtenübertragungssystem
DE2425674B2 (de) * 1974-05-28 1976-06-10 Standard Elektrik Lorenz Ag, 7000 Stuttgart Nullstellenfilter
FR2307411A1 (fr) * 1975-04-11 1976-11-05 Thomson Csf Poste telephonique a generateur de porteurs programmable et systeme telephonique utilisant un tel poste
US4029902A (en) * 1975-10-22 1977-06-14 Hughes Aircraft Company Contiguous channel multiplexer
US4159454A (en) * 1977-12-30 1979-06-26 The United States Of America As Represented By The Secretary Of The Air Force Plug-in filter network for separating a communication frequency into discrete frequency channels

Also Published As

Publication number Publication date
WO1980001633A1 (en) 1980-08-07
JPS56500198A (pt) 1981-02-19
EP0023223A4 (en) 1981-06-30
EP0023223A1 (en) 1981-02-04

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