| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-directional antenna which is simpler in structure than that of a conventional non-directional antenna, and is made thin in diameter. Ž<P>SOLUTION: The non-directional antenna includes: a dielectric substrate in a rectangular shape; ground conductors formed on inner four faces of the rectangular shape; a horizontal polarization antenna element formed on outer four faces of the rectangular shape; a vertical polarization antenna element formed on outer four faces of the rectangular shape; a pair of horizontal polarization parasitic elements disposed on the horizontal polarization antenna element; and a vertical polarization parasitic element disposed on the vertical polarization antenna element. Each of the horizontal polarization antenna element and the vertical polarization antenna element is one patch antenna element formed while being folded on the outer four faces of the rectangular shape, the pair of horizontal parasitic elements are formed at a predetermined interval to cover the surroundings of the dielectric substrate in the rectangular shape, and the predetermined interval is positioned on two faces, opposite to each other, of the dielectric substrate in the rectangular shape. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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