(19)
(11) EP 0 290 969 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.03.1990 Bulletin 1990/13

(43) Date of publication A2:
17.11.1988 Bulletin 1988/46

(21) Application number: 88107264.9

(22) Date of filing: 06.05.1988
(51) International Patent Classification (IPC)4: H01Q 15/16, H01Q 19/19
(84) Designated Contracting States:
AT BE CH DE ES FR GB LI NL SE

(30) Priority: 15.05.1987 IT 4794687

(71) Applicant: SELENIA SPAZIO S.p.A.
I-67100 L'Aquila (IT)

(72) Inventors:
  • Manoni, Giovanni
    Ronciglione Viterbo (IT)
  • Nisi, Enrico
    Rom (IT)
  • Perrotta, Giorgio
    Rom (IT)

(74) Representative: Gustorf, Gerhard, Dipl.-Ing. 
Patentanwalt Dipl.-Ing. Gerhard Gustorf Bachstrasse 6 A
84036 Landshut
84036 Landshut (DE)


(56) References cited: : 
   
       


    (54) Unfoldable antenna with two reflecting surfaces


    (57) Antenna consisting of a main reflecting surface (1), a sub reflector (2) and an unfolding device of the secondary surface, made up of the following primary parts: a motor (3); a supporting structure (4) for the sub-reflector and a telescopic positioning rod (5).
    The antenna, so configured, minimizes space occupancy problems during the launch phase of satellites for space applications and during transportation, for ground applications, yet assuring that correct positioning of the reflecting surfaces takes place during operation.







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