(19)
(11) EP 0 408 194 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.03.1991 Bulletin 1991/13

(43) Date of publication A2:
16.01.1991 Bulletin 1991/03

(21) Application number: 90306419.4

(22) Date of filing: 13.06.1990
(51) International Patent Classification (IPC)5: H01Q 1/12, H01Q 1/32
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI NL SE

(30) Priority: 13.07.1989 US 379179

(71) Applicant: Blaese, Herbert Rudolph
Chicago Illinois 60634 (US)

(72) Inventor:
  • Blaese, Herbert Rudolph
    Chicago Illinois 60634 (US)

(74) Representative: Popp, Eugen, Dr. et al
MEISSNER, BOLTE & PARTNER Postfach 86 06 24
81633 München
81633 München (DE)


(56) References cited: : 
   
       


    (54) On-glass antenna with counterpoise


    (57) An antenna for mounting on the window or the like comprises outer (14) and inner RF transfer members (46), each having an electrically conductive member (17, 58) on its underside for respective engagement with the inside and outside of the window (12). A current-fed radiator (16) is carried by the RF transfer member (14) on the outside of the window, while the inner RF transfer member (46) connects to electrical cable (50) having both a main electrical conductor (52) and a ground conductor (53). In accordance with this invention, counterpoise means comprises a conductor carried by the inner RF transfer member which is adapted for electrical engagement with a ground conductor. Typically, the elongated conductor is of about a quarter wavelength and is a coil (80). The counterpoise means (80) typically extends in a direction which is at least generally in the direction of the current-fed radiator (16).






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