Antenna device

Details Antenna device Antenna device

2007-03-27

2007-03-27

Dinh, Trinh Vo (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000

Reexamination Certificate

active

11109989

ABSTRACT:
An antenna device has a first antenna element supporting a low frequency band and a second antenna element supporting a high frequency band. The first antenna element and the second antenna element are disposed so as to face to each other, on the wiring board of a radio device, and at positions separated from each other by a predetermined distance. The distance between the first antenna element and the ground of wiring board is longer than the distance between the second antenna element and the ground of the wiring board. The antenna device supports two frequency bands with the first antenna element and the second antenna element.

REFERENCES:
patent: 5926139 (1999-07-01), Korisch
patent: 6573867 (2003-06-01), Desclos et al.
patent: 6734825 (2004-05-01), Guo et al.
patent: 6933902 (2005-08-01), Yeh
patent: 2004/0104853 (2004-06-01), Chen
patent: 2004/0222923 (2004-11-01), Erkocevic
patent: 2004/0233109 (2004-11-01), Ying et al.
“New Antenna Engineering—Antenna technology in era of mobile communications”, by Hiroyuki Arai, Sogo Electronics Press, Apr. 9, 1996, pp. 109-114, Apr. 9, 1996, with partial English translation.

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