| 摘要 |
PROBLEM TO BE SOLVED: To enhance the radio wave receiving sensitivity of an antenna device of a predetermined height or lower.SOLUTION: An antenna device 1 includes an antenna base 20 and an antenna cover 10 attached to the antenna base 20. The antenna cover 10 has a resin-made cover body 11 and a capacitive element 12 integrally molded with the cover body 11 and functioning as at least one of a capacitance ring and an inductor. The antenna device 1 includes a helical element 32 electrically connected to the capacitive element 12, and an antenna substrate B1 electrically connected to the helical element 32 and installed on the antenna base 20.SELECTED DRAWING: Figure 2 |
