| 摘要 |
An antenna device includes an antenna (10) for operating in at least one frequency band which is divided into at least two part-frequency bands. The antenna is dimensioned or tuned for one useful frequency band, with the bandwidth (Delta f) largely in agreement with that of a part-frequency band, and the useful frequency band can be shifted by means of a matching circuit arrangement (17,18,20,22) adjoining the antenna into another part-frequency band. |
