| 摘要 |
An antenna apparatus is disclosed. The antenna apparatus has a first antenna, a second antenna, and a third antenna which have different directivity directions each other and are switched for a desired directivity direction. The first antenna is disposed on a substrate which is in parallel therewith. The second antenna is disposed on one principal surface of the substrate which is nearly perpendicular thereto. The third antenna is disposed on the other principal surface of the substrate which is nearly perpendicular thereto.
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