Title:
CELLULAR PHONE
Document Type and Number:
WIPO Patent Application WO/2006/013843
Kind Code:
A1
Abstract:
A cellular phone having a broadcasting receiver which provides a high antenna sensitivity when receiving airwaves, by selectively switching antennas in different operation modes, corresponding to various use conditions. A loop antenna element (7), which is a magnetic field mode antenna element having a horizontal directivity characteristic, is arranged along a width direction (Y axis direction) of a cellular phone (100) near a hinge part (3) of a lower case body (2), and is connected to a high frequency switch (9) through a matching circuit (8). A television broadcasting signal received by an earphone cable (12), which is an electric field mode antenna element having a vertical directivity characteristic, is inputted to a high frequency switch (9) through an earphone connector (13). An antenna switching control part (15) detects receiving signal intensity at a broadcast receiving circuit (10), and operates to selectively switch the high frequency switch (9) to the loop antenna element (7) or the earphone connector (13) in response to the receiving signal level.
Inventors:
YAMAZAKI YUKARI
SAITO YUTAKA
KOYANAGI YOSHIO
EGAWA KIYOSHI
SASAKI HIROYUKI
SAITO YUTAKA
KOYANAGI YOSHIO
EGAWA KIYOSHI
SASAKI HIROYUKI
Application Number:
PCT/JP2005/014091
Publication Date:
February 09, 2006
Filing Date:
August 02, 2005
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
YAMAZAKI YUKARI
SAITO YUTAKA
KOYANAGI YOSHIO
EGAWA KIYOSHI
SASAKI HIROYUKI
YAMAZAKI YUKARI
SAITO YUTAKA
KOYANAGI YOSHIO
EGAWA KIYOSHI
SASAKI HIROYUKI
International Classes:
H01Q1/24; H01Q1/44; H01Q3/24; H04B1/18; H04B1/40; H04N5/44; (IPC1-7): H01Q3/24; H01Q1/24; H01Q1/44; H04B1/18; H04B1/40; H04N5/44
Foreign References:
| JP2000244219A | 2000-09-08 | |||
| JPH0818493A | 1996-01-19 | |||
| JP2001251232A | 2001-09-14 | |||
| JPH1188246A | 1999-03-30 | |||
| JPS6244539U | 1987-03-18 | |||
| JP2004034149A | 2004-02-05 |
Attorney, Agent or Firm:
Washida, Kimihito (Shintoshicenter Bldg. 24-1, Tsurumaki 1-chom, Tama-shi Tokyo 34, JP)
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