| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize the configuration of an antenna system, to prevent the number of components from being increased, to minimize the leakage current and to prevent the frequency characteristic from being made narrower. SOLUTION: This antenna system is provided with a 1st antenna element 2 which is connected to a center conductor of a coaxial feeder 5, arranged to be extended along an axial line direction of the coaxial feeder 5, and whose tip is folded, and with a 2nd antenna element 3 connected to an outer conductor of the coaxial feeder 5 and whose tip is folded. Thus, the configuration of a dipole antenna of a 1/2 wavelength system can be made small and the antenna system can be installed in spite of restriction of an installed place and the increase in the number of the components can be prevented.
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