| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the generation of a reverse current in the storage of an antenna element, to suppress the deterioration a gain of an antenna, and to improve antenna characteristics. Ž<P>SOLUTION: The inside of a casing 1 is provided with a contact element 10 composed of a spring member, contact segments 10a, 10b are formed in the contact element 10, wherein the contact segments 10a, 10b corresponding to the respective insertion ends 11a, 11b of antenna elements 2a, 2b stored in the casing 1 are elastically brought into contact with the contact element. Thus, in the antenna elements 2a, 2b stored in the casing 1, the antenna insertion ends (11a, 11b) are DC-connected via the contact element 10 to form a loop type antenna. In addition, if the antenna elements 2a, 2b are drawn from the casing 1 to be developed in the horizontal direction, they operate as dipole type antennas. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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