| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna system capable of reducing its manufacturing cost while keeping a satisfactory directivity and also capable of being downsized. SOLUTION: A case 20 to be attached to an attachment position of a wall, a pole, or the like has a reflecting layer provided on an inside surface being a surface layer thereof and has an antenna element 30 stored therein and has a radome 40 attached thereto so as to conceal the antenna element 30. A waveguide element 41 is provided on surface layers of a front side and/or a rear side 40a of the radome 40, so that an antenna system 10 is made light in weight, small in sized and easy to manufacture since the member for attaching the waveguide element 41 can be eliminated and also an attaching part such as a recessed part for attaching the waveguide element 41 to the radome 40 is not necessitated. Furthermore, the directivity can be kept satisfactorily. COPYRIGHT: (C)2007,JPO&INPIT
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