Title:
MOBILE TELEPHONE
Document Type and Number:
WIPO Patent Application WO/2005/124923
Kind Code:
A1
Abstract:
There is provided a mobile telephone assuring a high reception sensitivity over a wide band without deteriorating the design of the mobile telephone. In the mobile telephone, a helical antenna (4) operating as an antenna for television reception is formed by winding a conductive element along the external surface of the case several times at the upper end of the upper case (1). The helical antenna (4) is impedance-matched by a matching circuit (5) in a range of the order from 470 MHz to 700 MHz which is the television broadcast frequency. The matching circuit (5) is connected to a broadcast reception circuit (6). The broadcast reception circuit (6) operates as a reception circuit for receiving the television broadcast wave.
Inventors:
NISHIKIDO TOMOAKI
SAITO YUTAKA
YAMAZAKI YUKARI
KOYANAGI YOSHIO
EGAWA KIYOSHI
SAITO YUTAKA
YAMAZAKI YUKARI
KOYANAGI YOSHIO
EGAWA KIYOSHI
Application Number:
PCT/JP2005/011038
Publication Date:
December 29, 2005
Filing Date:
June 16, 2005
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
NISHIKIDO TOMOAKI
SAITO YUTAKA
YAMAZAKI YUKARI
KOYANAGI YOSHIO
EGAWA KIYOSHI
NISHIKIDO TOMOAKI
SAITO YUTAKA
YAMAZAKI YUKARI
KOYANAGI YOSHIO
EGAWA KIYOSHI
International Classes:
H01Q1/24; H01Q1/36; H01Q7/00; H01Q11/08; H04M1/02; (IPC1-7): H01Q1/24; H01Q7/00; H04M1/02
Domestic Patent References:
| WO2002001879A2 | 2002-01-03 |
Foreign References:
| JP2005217917A | 2005-08-11 | |||
| JP2002158530A | 2002-05-31 | |||
| JP2000077921A | 2000-03-14 | |||
| JP2001251131A | 2001-09-14 | |||
| JP2001251131A | 2001-09-14 | |||
| JP2001223518A | 2001-08-17 | |||
| JP2000031721A | 2000-01-28 | |||
| JPH07263931A | 1995-10-13 | |||
| GB2358991A | 2001-08-08 | |||
| JPS568902A | 1981-01-29 |
Other References:
See also references of EP 1746682A4
Attorney, Agent or Firm:
Washida, Kimihito (Shintoshicenter Bldg., 24-1, Tsurumaki, 1-chom, Tama-shi Tokyo 34, JP)
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