Title:
BUILT-IN ANTENNA FOR RADIO COMMUNICATION TERMINAL
Document Type and Number:
WIPO Patent Application WO/2002/019465
Kind Code:
A1
Abstract:
A radio communication terminal built-in antenna allowing high gains and exhibiting a less influence on a human body. In this radio communication terminal built-in antenna, an antenna element constituting a dipole antenna (321) is opposed to a second parasitic element (392) shaped like a rod. The spacing between the second parasitic element (392) and the antenna element (321) is appropriately established by changing the mutual impedance therebetween such that the input impedance characteristic provides a wide band.
Inventors:
ITO HIDEO (JP)
EGAWA KIYOSHI (JP)
EGAWA KIYOSHI (JP)
Application Number:
PCT/JP2001/007453
Publication Date:
March 07, 2002
Filing Date:
August 30, 2001
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
ITO HIDEO (JP)
EGAWA KIYOSHI (JP)
ITO HIDEO (JP)
EGAWA KIYOSHI (JP)
International Classes:
H01Q1/24; H01Q1/36; H01Q9/26; H01Q19/30; (IPC1-7): H01Q1/24; H01Q9/26; H01Q9/42
Foreign References:
| JPH11317609A | 1999-11-16 | |||
| JPH06260826A | 1994-09-16 | |||
| JP2000134025A | 2000-05-12 | |||
| JPS61205004A | 1986-09-11 | |||
| JPH1041721A | 1998-02-13 | |||
| JPS56711A | 1981-01-07 | |||
| JPH07226624A | 1995-08-22 | |||
| JPH11330842A | 1999-11-30 | |||
| JPH1127041A | 1999-01-29 | |||
| JPH0256101A | 1990-02-26 | |||
| JPH07142921A | 1995-06-02 | |||
| JPS60240201A | 1985-11-29 | |||
| JPH09326632A | 1997-12-16 | |||
| JPH11154815A | 1999-06-08 | |||
| JPS56708A | 1981-01-07 | |||
| JP2000031721A | 2000-01-28 |
Other References:
See also references of EP 1315233A4
Attorney, Agent or Firm:
Washida, Kimihito (Shintoshicenter Bldg. 24-1 Tsurumaki 1-chome Tama-shi, Tokyo, JP)
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