| 摘要 |
PROBLEM TO BE SOLVED: To improve antenna sensitivity while securing a noise removing function for a desired frequency band of a received signal by finely adjusting a resonance frequency of a coil unit for an antenna, and to provide the compact and light weight coil device while improving the mechanical strength. SOLUTION: The coil unit 11 for the antenna is configured to finely adjust the resonance frequency by varying the capacitance value between terminal plates 4 and 5 by varying the bend angle of an outward end parts 4A of the terminal plate 4 connected to a connector by an adjustment section 7 comprising the terminal plate 4 and the terminal plate 5 fixedly joined to a bus bar 21. COPYRIGHT: (C)2008,JPO&INPIT
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