IT7850115A0 - DEVICE TO MAKE THE SECONDARY LOBE OF A POLARIZATION ROTATION CASSEGRAIN TYPE ANTENNA DISAPPEAR - Google Patents

DEVICE TO MAKE THE SECONDARY LOBE OF A POLARIZATION ROTATION CASSEGRAIN TYPE ANTENNA DISAPPEAR

Info

Publication number
IT7850115A0
IT7850115A0 IT7850115A IT5011578A IT7850115A0 IT 7850115 A0 IT7850115 A0 IT 7850115A0 IT 7850115 A IT7850115 A IT 7850115A IT 5011578 A IT5011578 A IT 5011578A IT 7850115 A0 IT7850115 A0 IT 7850115A0
Authority
IT
Italy
Prior art keywords
disappear
make
type antenna
polarization rotation
secondary lobe
Prior art date
Application number
IT7850115A
Other languages
Italian (it)
Other versions
IT1105244B (en
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 IT7850115A0 publication Critical patent/IT7850115A0/en
Application granted granted Critical
Publication of IT1105244B publication Critical patent/IT1105244B/en

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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/001—Crossed polarisation dual antennas
IT50115/78A 1977-07-01 1978-06-30 DEVICE TO DISAPPEAR THE SECONDARY LOBES OF A CASSEGRAIN TYPE AERIAL WITH A POLARIZATION ROTATION IT1105244B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7720371A FR2396434A1 (en) 1977-07-01 1977-07-01 Cassegrain aerial side lobes suppression - involves auxiliary receiver between directional coupler and comparator

Publications (2)

Publication Number Publication Date
IT7850115A0 true IT7850115A0 (en) 1978-06-30
IT1105244B IT1105244B (en) 1985-10-28

Family

ID=9192883

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50115/78A IT1105244B (en) 1977-07-01 1978-06-30 DEVICE TO DISAPPEAR THE SECONDARY LOBES OF A CASSEGRAIN TYPE AERIAL WITH A POLARIZATION ROTATION

Country Status (3)

Country Link
DE (1) DE2828807C2 (en)
FR (1) FR2396434A1 (en)
IT (1) IT1105244B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511196A1 (en) * 1981-08-07 1983-02-11 Thomson Csf MAIN AND AUXILIARY ANTENNA ASSEMBLY WITH ELECTRONIC SCAN AND RADAR COMPRISING SUCH AN ASSEMBLY
US4504835A (en) * 1982-06-15 1985-03-12 The United States Of America As Represented By The Secretary Of The Navy Low sidelobe, high efficiency mirror antenna with twist reflector
WO1990006665A1 (en) * 1988-12-05 1990-06-14 European Atomic Energy Community (Euratom) Antenna producing a millimeter wave beam having a gaussian-like distribution

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1316780A (en) * 1962-02-22 1963-02-01 Marconi Wireless Telegraph Co Radar antenna improvements
FR1477571A (en) * 1966-02-25 1967-04-21 Csf Improvements to focusing device antennas

Also Published As

Publication number Publication date
DE2828807C2 (en) 1985-09-12
IT1105244B (en) 1985-10-28
DE2828807A1 (en) 1979-01-18
FR2396434A1 (en) 1979-01-26
FR2396434B1 (en) 1980-01-18

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