FR1107577A - Improvements to directional antenna systems - Google Patents

Improvements to directional antenna systems

Info

Publication number
FR1107577A
FR1107577A FR1107577DA FR1107577A FR 1107577 A FR1107577 A FR 1107577A FR 1107577D A FR1107577D A FR 1107577DA FR 1107577 A FR1107577 A FR 1107577A
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
French (fr)
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 FR1107577A publication Critical patent/FR1107577A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas
    • 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
    • H01Q19/15—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 being a line source, e.g. leaky waveguide antennas
FR1107577D 1953-06-17 1954-06-17 Improvements to directional antenna systems Expired FR1107577A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1678553A GB741897A (en) 1953-06-17 1953-06-17 Improvements in or relating to directional aerial systems

Publications (1)

Publication Number Publication Date
FR1107577A true FR1107577A (en) 1956-01-03

Family

ID=10083608

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1107577D Expired FR1107577A (en) 1953-06-17 1954-06-17 Improvements to directional antenna systems

Country Status (4)

Country Link
DE (1) DE1001353B (en)
ES (1) ES215856A1 (en)
FR (1) FR1107577A (en)
GB (1) GB741897A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2034170A1 (en) * 1969-02-17 1970-12-11 Thomson Csf
FR2061510A1 (en) * 1969-02-28 1971-06-25 Thomson Csf

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919442A (en) * 1955-12-09 1959-12-29 American Electronics Antenna
DE1048962B (en) * 1957-09-20 1959-01-22 Siemens Ag Directional antenna for very short electromagnetic waves
NL251575A (en) * 1959-05-11 1964-02-25
CH391803A (en) * 1961-10-06 1965-05-15 Patelhold Patentverwertung Axially backward radiating helical antenna
US4014028A (en) * 1975-08-11 1977-03-22 Trw Inc. Backfire bifilar helical antenna
CA1257694A (en) * 1985-08-05 1989-07-18 Hisamatsu Nakano Antenna system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE812444C (en) * 1950-03-11 1951-08-30 Karl-Otto Dr-Ing Schmidt Coil antenna for advancing circularly polarized waves

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2034170A1 (en) * 1969-02-17 1970-12-11 Thomson Csf
FR2061510A1 (en) * 1969-02-28 1971-06-25 Thomson Csf

Also Published As

Publication number Publication date
GB741897A (en) 1955-12-14
ES215856A1 (en) 1955-08-01
DE1001353B (en) 1957-01-24

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