IT1205964B - ANTENNA WITH TWO REFLECTIVE SURFACES AND SUB-REFLECTOR AVAILABLE - Google Patents

ANTENNA WITH TWO REFLECTIVE SURFACES AND SUB-REFLECTOR AVAILABLE

Info

Publication number
IT1205964B
IT1205964B IT47946/87A IT4794687A IT1205964B IT 1205964 B IT1205964 B IT 1205964B IT 47946/87 A IT47946/87 A IT 47946/87A IT 4794687 A IT4794687 A IT 4794687A IT 1205964 B IT1205964 B IT 1205964B
Authority
IT
Italy
Prior art keywords
antenna
sub
reflective surfaces
reflector available
reflector
Prior art date
Application number
IT47946/87A
Other languages
Italian (it)
Other versions
IT8747946A0 (en
Inventor
Giovanni Manoni
Enrico Nisi
Giorgio Perrotta
Original Assignee
Selenia Spazio Spa
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 Selenia Spazio Spa filed Critical Selenia Spazio Spa
Priority to IT47946/87A priority Critical patent/IT1205964B/en
Publication of IT8747946A0 publication Critical patent/IT8747946A0/en
Priority to EP88107264A priority patent/EP0290969A3/en
Application granted granted Critical
Publication of IT1205964B publication Critical patent/IT1205964B/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
    • H01Q15/161—Collapsible reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
IT47946/87A 1987-05-15 1987-05-15 ANTENNA WITH TWO REFLECTIVE SURFACES AND SUB-REFLECTOR AVAILABLE IT1205964B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT47946/87A IT1205964B (en) 1987-05-15 1987-05-15 ANTENNA WITH TWO REFLECTIVE SURFACES AND SUB-REFLECTOR AVAILABLE
EP88107264A EP0290969A3 (en) 1987-05-15 1988-05-06 Unfoldable antenna with two reflecting surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT47946/87A IT1205964B (en) 1987-05-15 1987-05-15 ANTENNA WITH TWO REFLECTIVE SURFACES AND SUB-REFLECTOR AVAILABLE

Publications (2)

Publication Number Publication Date
IT8747946A0 IT8747946A0 (en) 1987-05-15
IT1205964B true IT1205964B (en) 1989-04-05

Family

ID=11263532

Family Applications (1)

Application Number Title Priority Date Filing Date
IT47946/87A IT1205964B (en) 1987-05-15 1987-05-15 ANTENNA WITH TWO REFLECTIVE SURFACES AND SUB-REFLECTOR AVAILABLE

Country Status (2)

Country Link
EP (1) EP0290969A3 (en)
IT (1) IT1205964B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646564A (en) * 1969-03-03 1972-02-29 Raytheon Co Antenna slew system
FR2517626A1 (en) * 1981-12-04 1983-06-10 Europ Agence Spatiale ORBITAL SPACE ENGINE, IN PARTICULAR SATELLITE, WITH MULTIPLE MISSIONS
JPS6051004A (en) * 1983-08-30 1985-03-22 Nec Corp Parabolic antenna for loading on artificial satellite
EP0152221A3 (en) * 1984-02-09 1986-11-05 THE GENERAL ELECTRIC COMPANY, p.l.c. An earth terminal for satellite communication systems
US4771293A (en) * 1984-11-07 1988-09-13 The General Electric Company P.L.C. Dual reflector folding antenna

Also Published As

Publication number Publication date
IT8747946A0 (en) 1987-05-15
EP0290969A3 (en) 1990-03-28
EP0290969A2 (en) 1988-11-17

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