Portable terminal apparatus

Communications: radio wave antennas – Antennas – With radio cabinet

Reexamination Certificate

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Details

C343S876000

Reexamination Certificate

active

07907094

ABSTRACT:
The present invention has an object to provide a portable terminal apparatus capable of reducing that antenna characteristics of respective antenna elements are deteriorated due to antenna coupling phenomena even when a plurality of wireless communication functions are carried out at the same time by utilizing a plurality of antennas.The portable terminal apparatus1of the present invention is comprised of: a first wireless unit12for performing a wireless communication by utilizing electromagnetic waves of a first frequency range; a second wireless unit22for performing a wireless communication by utilizing electromagnetic waves of a second frequency range which is different from the first frequency range; a first antenna element11connected to the first wireless unit12; and a second antenna element21connected to the second wireless unit22; and in the portable terminal apparatus1, an impedance characteristic of the first antenna element11has a first frequency characteristic in which at least a characteristic in the first frequency range is superior than a characteristic in the second frequency range; and an impedance characteristic of the second antenna element21has a second frequency characteristic in which at least a characteristic in the second frequency range is superior than a characteristic in the first frequency range.

REFERENCES:
patent: 7035654 (2006-04-01), Forrester
patent: 2003/0013470 (2003-01-01), Forrester
patent: 1164709 (2003-06-01), None
patent: 07-221681 (1995-08-01), None
patent: 08-321716 (1996-03-01), None
patent: 08-307303 (1996-11-01), None
patent: 2000-324029 (2000-11-01), None
patent: 2003-046407 (2003-02-01), None
patent: 2005-51808 (2005-06-01), None
patent: 2005518708 (2005-06-01), None
patent: 0148934 (2001-07-01), None
International Search Report Dated Apr. 18, 2006.

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