(19)
(11) EP 0 402 005 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.05.1991 Bulletin 1991/20

(43) Date of publication A2:
12.12.1990 Bulletin 1990/50

(21) Application number: 90305620.8

(22) Date of filing: 23.05.1990
(51) International Patent Classification (IPC)5: H01Q 9/04, H01Q 1/28
(84) Designated Contracting States:
BE DE FR GB IT NL

(30) Priority: 09.06.1989 US 364404

(71) Applicant: RAYTHEON COMPANY
Lexington Massachusetts 02173 (US)

(72) Inventors:
  • Wada, Steven T.
    Santa Barbara, California (US)
  • Jobsky, Robert
    Santa Barbara, California (US)
  • Maybell, Michael J.
    Santa Barbara, California (US)

(74) Representative: Jackson, David Spence et al
REDDIE & GROSE 16, Theobalds Road
London, WC1X 8PL
London, WC1X 8PL (GB)


(56) References cited: : 
   
       


    (54) Flush mount antenna


    (57) An antenna (10) capable of being mounted flush with variously shaped surfaces comprises a dielectric filled radiating cavity (26) with two opposing tapered walls. The radiating cavity is excited by a microstrip horn (16) mounted on a dielectric board (14) below a second cavity (54) containing an absorber (52). The radiating cavity (26) is defined between a taper wall (50) of a metal top member (20) and an opposing taper wall (32) of a metal base member (12). A dielectric slab (18) fills the radiating cavity, and the top taper wall (50) acts as an extension of the microstrip horn (16). The upper surfaces of the base member (12), top member (20), and dielectric slab (18) conform to the surface in which the antenna (10) is mounted.







    Search report