JPS56500198A - - Google Patents

Info

Publication number
JPS56500198A
JPS56500198A JP80500497A JP50049780A JPS56500198A JP S56500198 A JPS56500198 A JP S56500198A JP 80500497 A JP80500497 A JP 80500497A JP 50049780 A JP50049780 A JP 50049780A JP S56500198 A JPS56500198 A JP S56500198A
Authority
JP
Japan
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.)
Pending
Application number
JP80500497A
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 filed Critical
Publication of JPS56500198A publication Critical patent/JPS56500198A/ja
Pending legal-status Critical Current

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
JP80500497A 1979-01-29 1980-01-23 Pending JPS56500198A (ja)

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
JPS56500198A true JPS56500198A (ja) 1981-02-19

Family

ID=21727479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP80500497A Pending JPS56500198A (ja) 1979-01-29 1980-01-23

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005119946A1 (ja) * 2004-06-03 2005-12-15 Cocomo Mb Communications, Inc. 無線通信システム

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
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
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
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
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
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
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
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
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
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
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
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

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005119946A1 (ja) * 2004-06-03 2005-12-15 Cocomo Mb Communications, Inc. 無線通信システム

Also Published As

Publication number Publication date
EP0023223A4 (en) 1981-06-30
WO1980001633A1 (en) 1980-08-07
EP0023223A1 (en) 1981-02-04
BR8006228A (pt) 1980-12-30

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