| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device, conversion adapter and receiver in which the number of components or the number of work steps can be reduced, reduction in the size of the device and in the cost can be attained, the device can be easily attached to and removed from an electronic apparatus, and deterioration in receiving sensitivity can be suppressed. SOLUTION: An antenna device 10 includes a round plug 30, having a rotation mechanism section 40 on one end thereof, where the round plug is removably attached to a round jack arranged in an electronic apparatus, and a rod antenna element 20 that can be elongated. The one end of the rod antenna element 20 is connected to the rotation mechanism section 40 of the round plug 30 and is rotatable in a predetermined direction. COPYRIGHT: (C)2011,JPO&INPIT
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