(19)
(11) EP 0 303 001 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.09.1990 Bulletin 1990/36

(43) Date of publication A2:
15.02.1989 Bulletin 1989/07

(21) Application number: 88107171.6

(22) Date of filing: 04.05.1988
(51) International Patent Classification (IPC)4: H01Q 13/06
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR LI NL SE

(30) Priority: 11.06.1987 IT 2178687 U

(71) Applicant: IRTE S.p.A.
I-21013 Gallarate (Varese) (IT)

(72) Inventor:
  • Martinelli, Eugenio
    I-20129 Milano (IT)

(74) Representative: Münzhuber, Robert, Dipl.-Phys. 
Patentanwalt Rumfordstrasse 10
D-80469 München
D-80469 München (DE)


(56) References cited: : 
   
       


    (54) Horn antenna


    (57) The horn illuminator for reflector antennas with rectangular radia­tion pattern is provided with a ring (4) of electrically conductive material coaxially placed before the horn mouth (3) a distance of λ/4 therefrom and in a plane parallel to that of said mouth (3). The elec­trically conductive ring (4) is supported by a cap of polytetra­fluoroethylene material acting as a protection therefor.







    Search report