FR937949A - Systèmes d'antennes à effet directif - Google Patents

Systèmes d'antennes à effet directif

Info

Publication number
FR937949A
FR937949A FR937949DA FR937949A FR 937949 A FR937949 A FR 937949A FR 937949D A FR937949D A FR 937949DA FR 937949 A FR937949 A FR 937949A
Authority
FR
France
Prior art keywords
directional antenna
antenna systems
systems
directional
antenna
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR937949A publication Critical patent/FR937949A/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
    • 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
    • H01Q19/20—Producing pencil beam by two cylindrical focusing devices with their focal lines orthogonally disposed
FR937949D 1945-01-24 1946-09-06 Systèmes d'antennes à effet directif Expired FR937949A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US574334A US2705754A (en) 1945-01-24 1945-01-24 Directive antenna systems

Publications (1)

Publication Number Publication Date
FR937949A true FR937949A (fr) 1948-08-31

Family

ID=24295665

Family Applications (1)

Application Number Title Priority Date Filing Date
FR937949D Expired FR937949A (fr) 1945-01-24 1946-09-06 Systèmes d'antennes à effet directif

Country Status (4)

Country Link
US (1) US2705754A (fr)
BE (1) BE468393A (fr)
FR (1) FR937949A (fr)
GB (1) GB606927A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB976253A (en) * 1962-04-04 1964-11-25 Marconi Co Ltd Improvements in or relating to aerial systems
JP2002339859A (ja) * 2001-05-17 2002-11-27 National Aerospace Laboratory Of Japan 電磁波集束装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1299397A (en) * 1917-05-12 1919-04-01 Oliver Earle Conkin Light-projection apparatus.
US1625946A (en) * 1924-03-13 1927-04-26 John H Laird Head lamp
BE381315A (fr) * 1930-07-21
DE636809C (de) * 1930-08-08 1936-10-17 Rudolf Weyrich Dr Vorrichtung zum Senden oder Empfangen elektromagnetischer Wellen mit in der Umgebungeiner Sende- oder Empfangsvorrichtung angeordneten Reflektoren
DE568015C (de) * 1931-09-16 1933-01-12 Telefunken Gmbh Spiegelanordnung fuer ultrakurze elektromagnetische Wellen
US2206923A (en) * 1934-09-12 1940-07-09 American Telephone & Telegraph Short wave radio system
US2283935A (en) * 1938-04-29 1942-05-26 Bell Telephone Labor Inc Transmission, radiation, and reception of electromagnetic waves
US2272839A (en) * 1938-11-23 1942-02-10 Jr John Hays Hammond Radiant energy signaling system
US2398095A (en) * 1940-08-31 1946-04-09 Rca Corp Electromagnetic horn radiator
US2436408A (en) * 1943-05-27 1948-02-24 Sperry Corp Radio wave reflecting transducer system
US2434253A (en) * 1943-08-21 1948-01-13 Bell Telephone Labor Inc Directive centimetric antenna

Also Published As

Publication number Publication date
BE468393A (fr)
GB606927A (en) 1948-08-23
US2705754A (en) 1955-04-05

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