FR951691A - Perfectionnements aux réseaux d'aériens et à leurs systèmes d'alimentation - Google Patents

Perfectionnements aux réseaux d'aériens et à leurs systèmes d'alimentation

Info

Publication number
FR951691A
FR951691A FR951691DA FR951691A FR 951691 A FR951691 A FR 951691A FR 951691D A FR951691D A FR 951691DA FR 951691 A FR951691 A FR 951691A
Authority
FR
France
Prior art keywords
supply systems
overhead networks
overhead
networks
systems
Prior art date
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
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Application granted granted Critical
Publication of FR951691A publication Critical patent/FR951691A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
    • H01Q19/175—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements arrayed along the focal line of a cylindrical focusing surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
FR951691D 1946-03-19 1947-08-07 Perfectionnements aux réseaux d'aériens et à leurs systèmes d'alimentation Expired FR951691A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB274094X 1946-03-19
GB110447X 1947-04-11

Publications (1)

Publication Number Publication Date
FR951691A true FR951691A (fr) 1949-11-02

Family

ID=26247985

Family Applications (1)

Application Number Title Priority Date Filing Date
FR951691D Expired FR951691A (fr) 1946-03-19 1947-08-07 Perfectionnements aux réseaux d'aériens et à leurs systèmes d'alimentation

Country Status (4)

Country Link
US (1) US2570599A (fr)
CH (1) CH274094A (fr)
FR (1) FR951691A (fr)
GB (1) GB619868A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520160A1 (fr) * 1982-01-20 1983-07-22 Sairem Sarl Dispositif de traitement ho

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794185A (en) * 1953-01-06 1957-05-28 Itt Antenna systems
AU2003256273A1 (en) * 2002-07-17 2004-02-09 Massachusetts Institute Of Technology Wideband dipole array antenna element

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US741622A (en) * 1900-01-23 1903-10-20 Sidney George Brown System of wireless telegraphy.
US1715433A (en) * 1922-08-29 1929-06-04 American Telephone & Telegraph Antenna array
BE381315A (fr) * 1930-07-21
US2156653A (en) * 1935-06-04 1939-05-02 Telefunken Gmbh Ultra short wave system
US2231929A (en) * 1937-04-29 1941-02-18 Sperry Gyroscope Co Inc Tridimensional radio direction indicator
US2272839A (en) * 1938-11-23 1942-02-10 Jr John Hays Hammond Radiant energy signaling system
DE865010C (de) * 1939-10-08 1953-01-29 Telefunken Gmbh Richtantennenanordnung mit unterdrueckter Seitenstrahlung
BE439358A (fr) * 1939-10-12
US2419609A (en) * 1940-09-25 1947-04-29 Standard Telephones Cables Ltd Means for overcoming the effects of earth reflections in directional antenna systems
US2408435A (en) * 1941-03-01 1946-10-01 Bell Telephone Labor Inc Pipe antenna and prism
US2397645A (en) * 1942-05-30 1946-04-02 Rca Corp Antenna system
US2413951A (en) * 1942-06-03 1947-01-07 Rca Corp Antenna system
US2419205A (en) * 1942-11-04 1947-04-22 Bell Telephone Labor Inc Directive antenna system
US2447549A (en) * 1943-03-05 1948-08-24 Standard Telephones Cables Ltd Radio glide path landing system for aircraft
US2464276A (en) * 1943-08-03 1949-03-15 Sperry Corp Radiant energy directivity pattern scanner
US2411976A (en) * 1944-08-31 1946-12-03 Rca Corp Broad band radiator
US2458885A (en) * 1944-12-15 1949-01-11 Bell Telephone Labor Inc Directive antenna system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520160A1 (fr) * 1982-01-20 1983-07-22 Sairem Sarl Dispositif de traitement ho

Also Published As

Publication number Publication date
US2570599A (en) 1951-10-09
GB619868A (en) 1949-03-16
CH274094A (fr) 1951-03-15

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