| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna whose frequency characteristics are not changed owing to production variations. SOLUTION: The antenna is equipped with a pattern coil 2 formed on a substrate and a pattern capacitor composed of first and second electrode patterns 3, 4 formed on the same surface and adjacently disposed, and the pattern coil 2 and the pattern capacitor are parallel or serially connected. Thus, a change in an inductance value of the pattern coil 2 is canceled by a capacitance change of the pattern capacitor, thereby fixing a product of the inductance value and a capacitance value. COPYRIGHT: (C)2004,JPO&NCIPI
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