| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and device which can easily realize impedance matching when a reactance part in the input impedance of an antenna is varied. SOLUTION: Impedance matching in the antenna impedance matching method and device can be carried out by installing upper and lower metallic sheets on a power supply part of a printed board antenna, making a printed board with a dielectric material to form an electric capacity, removing a reactance portion in the input impedance of the antenna based on the pure reactance property of the electric capacity, and controlling the magnitude of a capacitive reactance in the electric capacity with use of various methods for controlling the material of the printed board, a relative surface area, gap size or the like between the upper and lower metallic sheets. COPYRIGHT: (C)2003,JPO
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