| 摘要 |
An antenna device is provided that is particularly suitable for mobile radio telephone device. The antenna device has a first helix antenna, a helix antenna connectible to the first helix antenna as well as an extensible rod antenna. In the extended condition of the rod antenna, a connector element connects only the rod antenna to the first helix antenna. In the retracted condition of the rod antenna, the connector element connects only the second helix antenna to the first helix antenna. An antenna device having a low space requirement is thus created. It is simultaneously assured that, regardless of the retracted or extended condition of the rod antenna, an antenna device that is matched to the optimum transmission/reception power is always formed by a combination of two antennas.
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