Antenna for foldable radio device

Details Antenna for foldable radio device Antenna for foldable radio device

2005-10-04

2005-10-04

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

C343S7000MS, C343S895000

Reexamination Certificate

active

06952187

ABSTRACT:
A small and foldable radio device antenna and a radio device which has an antenna according to an embodiment of the invention. The radiating element in the antenna is a conductor having an outline shaped substantially like a rectangle and defining a plane which is perpendicular to the ground plane situated on the circuit board of the radio device. The radiating element fits inside the foldable device in the perpendicular position. The element is connected to the radio device only by its feed point. Resonating frequencies of the element can be arranged by shaping the element, and by means of discrete components. The matching of the antenna is arranged by providing an appropriate distance between the radiating element and ground plane. In an operating situation, an antenna gain is achieved which is considerably higher than that of a PIFA of equal height.

REFERENCES:
patent: 5936587 (1999-08-01), Gudilev et al.
patent: 6031495 (2000-02-01), Simmons et al.
patent: 6239765 (2001-05-01), Johnson et al.
patent: 6307511 (2001-10-01), Ying et al.
patent: 2002/0068603 (2002-06-01), Ito et al.
patent: 0 508 567 (1997-09-01), None
patent: 0 814 536 (1997-12-01), None
patent: 1 306 922 (2003-05-01), None
patent: WO-02/19465 (2002-03-01), None

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