BE826544A - Antenne a faisceau d'angle d'ouverture variable - Google Patents

Antenne a faisceau d'angle d'ouverture variable

Info

Publication number
BE826544A
BE826544A BE154222A BE154222A BE826544A BE 826544 A BE826544 A BE 826544A BE 154222 A BE154222 A BE 154222A BE 154222 A BE154222 A BE 154222A BE 826544 A BE826544 A BE 826544A
Authority
BE
Belgium
Prior art keywords
antenna
opening angle
variable opening
angle beam
variable
Prior art date
Application number
BE154222A
Other languages
English (en)
French (fr)
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 BE826544A publication Critical patent/BE826544A/xx

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
    • H01Q19/18—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 having two or more spaced reflecting surfaces
    • H01Q19/19—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
    • H01Q19/195—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein a reflecting surface acts also as a polarisation filter or a polarising device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/002—Antennas or antenna systems providing at least two radiating patterns providing at least two patterns of different beamwidth; Variable beamwidth antennas
BE154222A 1974-03-12 1975-03-11 Antenne a faisceau d'angle d'ouverture variable BE826544A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7408257A FR2264407B1 (de) 1974-03-12 1974-03-12

Publications (1)

Publication Number Publication Date
BE826544A true BE826544A (fr) 1975-06-30

Family

ID=9136147

Family Applications (1)

Application Number Title Priority Date Filing Date
BE154222A BE826544A (fr) 1974-03-12 1975-03-11 Antenne a faisceau d'angle d'ouverture variable

Country Status (7)

Country Link
BE (1) BE826544A (de)
DE (1) DE2510574A1 (de)
FR (1) FR2264407B1 (de)
GB (1) GB1488590A (de)
IT (1) IT1032256B (de)
NL (1) NL7502818A (de)
ZA (1) ZA751520B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2947910C2 (de) * 1979-11-28 1982-05-27 Siemens AG, 1000 Berlin und 8000 München Cassegrain-Antenne
GB2268834B (en) * 1980-12-04 1994-06-22 Racal Mesl Ltd Radar arrangements and methods of detecting different types of targets
FR2648278A1 (fr) * 1989-06-13 1990-12-14 Europ Agence Spatiale Antenne a faisceaux commutables
DE10344535A1 (de) * 2003-09-25 2005-04-28 Adc Automotive Dist Control Reflektorantenne
DE102007027975A1 (de) * 2007-06-19 2008-12-24 Robert Bosch Gmbh Sensorvorrichtung für ein Kraftfahrzeug
US11621494B2 (en) * 2020-09-21 2023-04-04 Nokia Shanghai Bell Co., Ltd. Feed for an antenna system comprising a sub-reflector and a main reflector

Also Published As

Publication number Publication date
ZA751520B (en) 1976-02-25
FR2264407A1 (de) 1975-10-10
AU7885275A (en) 1976-09-09
FR2264407B1 (de) 1978-02-10
IT1032256B (it) 1979-05-30
NL7502818A (nl) 1975-09-16
GB1488590A (en) 1977-10-12
DE2510574A1 (de) 1975-09-18

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