| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize an antenna and to easily perform impedance adjustment. SOLUTION: A first antenna element 1 formed as a helical antenna and a second antenna element 2 formed as a whip antenna are linearly arranged to constitute an antenna 10. The antenna no can be rotated by a revolving shaft 3; and when it is stood, either antenna element is connected to a signal source 7 in the enclosure. Therefore, a first contact terminal 5 for the first antenna element and a second contact terminal for the second antenna element which are to be connected to the contact terminal on the enclosure side are provided. Matching circuits 4 and 9 for matching of antenna elements ofλ/2 can be incorporated in the antenna 10.
|
