(19)
(11) EP 0 458 592 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.01.1992 Bulletin 1992/03

(43) Date of publication A2:
27.11.1991 Bulletin 1991/48

(21) Application number: 91304582.9

(22) Date of filing: 21.05.1991
(51) International Patent Classification (IPC)5: H01Q 1/32, H01Q 1/12, H04B 7/145
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU NL SE

(30) Priority: 22.05.1990 US 527181

(71) Applicant: ALLIANCE RESEARCH CORPORATION
Chatsworth, California 91311 (US)

(72) Inventor:
  • Cooper, Gershon N.
    Encino, California 91436 (US)

(74) Representative: Maggs, Michael Norman et al
Kilburn & Strode 30 John Street
London WC1N 2DD
London WC1N 2DD (GB)


(56) References cited: : 
   
       


    (54) Passive cellular telephone antenna system


    (57) A mast radiator (12) is affixed to a glass or other non conductive exterior panel (16) of a vehicle and is provided with a dipole element (18) and one or more parasitic elements to exchange signals, with gain, between the mast (12) and the antenna of a portable cellular telephone unit within the vehicle. In the preferred embodiment, a separate base unit (14) with parasitic elements is mounted on the same glass panel (16) on the opposite surface and opposite the base of the mast radiator (12).






    Search report