| 摘要 |
PURPOSE: An antenna device is provided to easily vary a resonant frequency to a desirable frequency band and to reduce the size of the antenna device. CONSTITUTION: An antenna device(200) includes a dielectric(203), an inverted L type antenna, a conductive member, and a switch. The inverted L type antenna is arranged on the side of the dielectric element. A part of the conductive member is separated. The conductive member has a plurality of members(201b,201c,201d,201e,201f,201g,201h). The switch cuts or conducts the members.
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