FR957647A - - Google Patents

Info

Publication number
FR957647A
FR957647A FR957647DA FR957647A FR 957647 A FR957647 A FR 957647A FR 957647D A FR957647D A FR 957647DA FR 957647 A FR957647 A FR 957647A
Authority
FR
France
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
Application number
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.)
Publication date
Application granted granted Critical
Publication of FR957647A publication Critical patent/FR957647A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/18—Arrangements for synchronising broadcast or distribution via plural systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
    • H03C3/14—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/002—Transmission systems not characterised by the medium used for transmission characterised by the use of a carrier modulation
    • H04B14/006—Angle modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
FR957647D 1943-11-09 Expired FR957647A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US509600A US2429504A (en) 1943-11-09 1943-11-09 Frequency modulation network

Publications (1)

Publication Number Publication Date
FR957647A true FR957647A (fr) 1950-02-23

Family

ID=24027343

Family Applications (1)

Application Number Title Priority Date Filing Date
FR957647D Expired FR957647A (fr) 1943-11-09

Country Status (3)

Country Link
US (1) US2429504A (fr)
FR (1) FR957647A (fr)
GB (1) GB583626A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549423A (en) * 1943-09-22 1951-04-17 Rca Corp Reduction of selective fading distortion
US2545511A (en) * 1945-05-02 1951-03-20 Brinkley John Raymond Radio communication system
US2579882A (en) * 1947-06-05 1951-12-25 Rca Corp Interference suppression in radio signaling systems
BE486057A (fr) * 1947-11-28
US2572235A (en) * 1948-03-30 1951-10-23 Bell Telephone Labor Inc Multichannel intermodulation interference reduction radio communication system
DE1111681B (de) * 1952-12-02 1961-07-27 Rundfunk Betr Stechnik G M B H Drahtloses Nachrichtenuebertragungs-system mit Mehrfachbesetzung von UKW-FM-Frequenzkanaelen
DE1230471B (de) * 1956-02-02 1966-12-15 Siemens Ag FM-Nachrichtenuebertragungssystem unter Verwendung gleichmodulierter Sender, die im gleichen Funkkanal liegende Traegerfrequenzen benutzen
DE1240954B (de) * 1957-03-07 1967-05-24 Siemens Ag Funksende- und Empfangssystem mit frequenzmodulierten Sendern gleicher Modulation fuer Flaechenversorgung
JPS52141113A (en) * 1976-05-19 1977-11-25 Nippon Telegr & Teleph Corp <Ntt> Transmission diversity system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751516A (en) * 1927-08-08 1930-03-25 American Telephone & Telegraph Common-frequency broadcasting system
US2127015A (en) * 1934-04-13 1938-08-16 American Optical Corp Electromagnetic wave signaling system
US2230231A (en) * 1936-10-24 1941-02-04 Rca Corp Phase and frequency modulation
US2233183A (en) * 1938-11-12 1941-02-25 Gen Electric Frequency modulation system
US2357975A (en) * 1942-03-16 1944-09-12 Rca Corp Frequency modulation system

Also Published As

Publication number Publication date
US2429504A (en) 1947-10-21
GB583626A (en) 1946-12-23

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