(19)
(11) EP 0 738 023 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.05.1997 Bulletin 1997/21

(43) Date of publication A2:
16.10.1996 Bulletin 1996/42

(21) Application number: 96105722.1

(22) Date of filing: 11.04.1996
(51) International Patent Classification (IPC)6: H01Q 9/04, H01Q 23/00
(84) Designated Contracting States:
DE FR GB

(30) Priority: 12.04.1995 JP 87134/95

(71) Applicant: MURATA MANUFACTURING CO., LTD.
Nagaokakyo-shi Kyoto-fu 226 (JP)

(72) Inventors:
  • Tsuru, Teruhisa
    Nagaokakyo-shi, Kyoto-fu (JP)
  • Mandai, Harufumi
    Nagaokakyo-shi, Kyoto-fu (JP)
  • Shiroki, Koji
    Nagaokakyo-shi, Kyoto-fu (JP)
  • Asakura, Kenji
    Nagaokakyo-shi, Kyoto-fu (JP)

(74) Representative: Schoppe, Fritz, Dipl.-Ing. 
Patentanwalt, Georg-Kalb-Strasse 9
82049 Pullach
82049 Pullach (DE)

   


(54) Antenna device


(57) An antenna device (10) includes a dielectric substrate (17), at least one peripheral antenna circuit (18,19) formed inside or on a surface of the dielectric substrate (17), and a radiator (11) for receiving or transmitting a signal. The radiator (11) has a radiating portion (12) and at least a pair of opposed fixing portions (13,14) extending from the radiating portion (12) so as to form a square-bottomed U-shaped cross section. The pair of opposed fixing portions (13,14) are attached to side faces of the dielectric substrate (17) such that the radiating portion (11) and an upper surface of the dielectric substrate (17) create a space (22).






Search report