NL7502818A - Bundelantenne met variabele openingshoek voor millimetergolven. - Google Patents

Bundelantenne met variabele openingshoek voor millimetergolven.

Info

Publication number
NL7502818A
NL7502818A NL7502818A NL7502818A NL7502818A NL 7502818 A NL7502818 A NL 7502818A NL 7502818 A NL7502818 A NL 7502818A NL 7502818 A NL7502818 A NL 7502818A NL 7502818 A NL7502818 A NL 7502818A
Authority
NL
Netherlands
Prior art keywords
opening angle
millimeter waves
variable opening
bundle
antenna
Prior art date
Application number
NL7502818A
Other languages
English (en)
Dutch (nl)
Original Assignee
Thomson Csf
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 Thomson Csf filed Critical Thomson Csf
Publication of NL7502818A publication Critical patent/NL7502818A/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
NL7502818A 1974-03-12 1975-03-10 Bundelantenne met variabele openingshoek voor millimetergolven. NL7502818A (nl)

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
NL7502818A true NL7502818A (nl) 1975-09-16

Family

ID=9136147

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7502818A NL7502818A (nl) 1974-03-12 1975-03-10 Bundelantenne met variabele openingshoek voor millimetergolven.

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
DE2510574A1 (de) 1975-09-18
GB1488590A (en) 1977-10-12
BE826544A (fr) 1975-06-30
FR2264407A1 (de) 1975-10-10
IT1032256B (it) 1979-05-30
AU7885275A (en) 1976-09-09
FR2264407B1 (de) 1978-02-10
ZA751520B (en) 1976-02-25

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Legal Events

Date Code Title Description
BV The patent application has lapsed