ANTENNA APPARATUS

摘要

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. A conductive material-made antenna plate is disposed at the upper surface of the opening, while a conductive material-made ground plate is disposed at the upper section on the rear side of the opening. Besides, a radio frequency circuit is mounted on an area in the ground section other than the opening. <IMAGE>