Antenna unit

Details Antenna unit Antenna unit

2005-02-01

2005-02-01

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000

Reexamination Certificate

active

06850194

ABSTRACT:
In an antenna unit used for a radio communication device in mobile communications, the object of the present invention is to provide an easily portable antenna unit with low profile but high gain. Furthermore, the structure of the antenna unit can offer easy impedance-matching and maintain a preferable shape for the long term. In the antenna unit of the present invention, an opening is disposed in a part of a conductive material-made ground section made of conductive material. An antenna plate made of conductive material is disposed at the upper surface of the opening, while a ground plate made of conductive material is disposed at the upper section on the rear side of the opening. In addition, a radio frequency circuit is mounted on an area in a ground section other than the opening.

REFERENCES:
patent: 5471221 (1995-11-01), Nalbandian et al.
patent: 5798734 (1998-08-01), Ohtsuka et al.
patent: 6018319 (2000-01-01), Lindmark
patent: 6018320 (2000-01-01), Jidhage et al.
patent: 6054953 (2000-04-01), Lindmark
patent: 63-155919 (1988-06-01), None
patent: 7-50516 (1995-02-01), None
patent: 11-168316 (1999-06-01), None
patent: 11-261456 (1999-09-01), None

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