| 摘要 |
PROBLEM TO BE SOLVED: To allow a single antenna to be operated at two frequency bands largely separated from each other. SOLUTION: A 1st coil section 13-1 is formed in a spiral groove made to an upper part of coil bobbins 11-1, 11-2 to form a 1st antenna section, and a 2nd coil section 13-2 is formed in a groove formed to a lower part to form a 2nd antenna section. The 1st coil section 13-1 of the 1st antenna section is connected to a center contact 12 to form its terminal at a lower end of the coil bobbin 11. Moreover, the 2nd coil section 13-2 of the 2nd antenna section is connected to a holder 14, and a mount 15 for the antenna of the holder 14 is used for a terminal. |
