| 摘要 |
This radio device operating over a plurality of bands comprises a casing having a front cover and a back cover, an antenna arrangement, a radio frequency circuit set and a matching unit for connecting the antenna arrangement to the radio frequency circuit set. The following measures are proposed: -the antenna arrangement is formed by at least two antenna parts, each of which being related to a set of bands, -the antenna parts are placed close together, -the arrangement comprises a part that is normal to the front cover and another one that is near the back cover and feeding points, -the matching unit comprises control switching means for tuning the arrangement to each band. Thanks to these measures, the coverage of the band is obtained with satisfactory performance.
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