Title:
MOBILE RADIO TERMINAL
Document Type and Number:
WIPO Patent Application WO/2005/122325
Kind Code:
A1
Abstract:
By devising the case shape and antenna arrangement, it is possible to provide a mobile radio terminal capable of always having a high antenna sensitivity even when the mobile radio terminal is placed in a pocket of user’s clothes. In this mobile radio terminal (1), the case (2) has a plane A having a flat shape and a plane B having a protruding portion (2a) at a part of the center portion or the entire portion. An antenna element (3) is arranged on the protruding portion (2a) of the plane B in parallel to the plane A. Since the plane B has a protrusion or a curved shape, when the user puts the terminal into the pocket of his/her clothes, he/she unconsciously puts the terminal with the plane A in contact with his/her body side. Accordingly, the mobile radio terminal (1) is always contained in the clothes pocket with the antenna element (3) positioned at a distance from the user’s body, i.e., at the farthest position from the user’s body. Consequently, the electromagnetic wave of the antenna element (3) is not affected by the user’s body and the mobile radio terminal (1) can always assure a preferable antenna gain and a high antenna sensitivity.
Inventors:
KOYANAGI YOSHIO
SAITO YUTAKA
IWAI HIROSHI
SAITO YUTAKA
IWAI HIROSHI
Application Number:
PCT/JP2005/010133
Publication Date:
December 22, 2005
Filing Date:
June 02, 2005
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
KOYANAGI YOSHIO
SAITO YUTAKA
IWAI HIROSHI
KOYANAGI YOSHIO
SAITO YUTAKA
IWAI HIROSHI
International Classes:
H01Q1/24; H01Q1/52; H01Q9/18; H01Q9/20; H01Q9/27; H01Q11/08; H04B1/38; H04M1/02; H04M1/60; (IPC1-7): H01Q1/24; H01Q9/18; H01Q9/20; H04M1/02
Foreign References:
| JP2004104502A | 2004-04-02 |
Other References:
OSA K. AND YAMADA Y.: "Dotaiban Kinsetsuji Normal-mode Helical Antenna no Nyuryoku Impedance Kaiseki", THE TRANSACTIONS OF THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS B-II, vol. J73-B-II, no. 5, 25 May 1990 (1990-05-25), pages 250 - 256, XP008079408
See also references of EP 1748514A4
See also references of EP 1748514A4
Attorney, Agent or Firm:
Washida, Kimihito (Shintoshicenter Bldg., 24-1, Tsurumaki1-chome, Tama-sh, Tokyo 34, JP)
Download PDF:
Previous Patent: MODULAR ANTENNA ARRAY
Next Patent: EARPHONE CABLE ANTENNA DEVICE, CONNECTION CABLE, AND BROADCAST RECEIVING APPARATUS
Next Patent: EARPHONE CABLE ANTENNA DEVICE, CONNECTION CABLE, AND BROADCAST RECEIVING APPARATUS