(19)
(11) EP 1 387 435 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 158(3) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
13.12.2006 Bulletin 2006/50

(43) Date of publication:
04.02.2004 Bulletin 2004/06

(21) Application number: 02702744.0

(22) Date of filing: 05.03.2002
(51) International Patent Classification (IPC): 
H01Q 5/01(1980.01)
H01Q 1/24(1968.09)
 H01Q 1/38(1968.09)
H01Q 13/26(1968.09)
(86) International application number:
PCT/JP2002/002038
(87) International publication number:
WO 2002/071542 (12.09.2002 Gazette 2002/37)
(84) Designated Contracting States:
BE DE FR GB

(30) Priority: 05.03.2001 JP 2001060788

(60) Divisional application:
06021550.6

(71) Applicants:
  • SONY CORPORATION
    Tokyo 141-0001 (JP)
  • Arai, Hiroyuki
    Yokohama-shi Kanagawa 241-0032 (JP)

(72) Inventors:
  • OKUBORA, Akihiko, c/o SONY CORPORATION
    Tokyo 141-0001 (JP)
  • HIRABAYASHI, Takayuki, c/o SONY CORPORATION
    Tokyo 141-0001 (JP)
  • NAKAYAMA, Norikazu, c/o SONY CORPORATION
    Tokyo 141-0001 (JP)
  • ARAI, Hiroyuki
    Yokohama-shi, Kanagawa 241-0032 (JP)

(74) Representative: Müller, Frithjof E. 
Müller Hoffmann & Partner Patentanwälte Innere Wiener Strasse 17
81667 München
81667 München (DE)


(56) References cited: : 
   
       


    (54) ANTENNA DEVICE


    (57) The present invention is an antenna apparatus attached to an electronic device and includes an antenna section (11) having an antenna element (18) provided with two or more power supply points (19) and two or more earth points (20); and an earth point switch (21) which is provided correspondingly to each earth point (20) and connects or disconnects the earth point (20) from a ground. Selectively turning on or off the earth point switch (21) selects the earth point to adjust the resonance frequency.