| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile device capable of suppressing the influence of a metal member on radio waves transmitted from the mobile device, while being provided with a belt-like metal member. SOLUTION: The length in the longitudinal direction of decoration metals 8, 8, 10 and 10 is set, such that the decoration metals 8, 8, 10 and 10 do not resonate, when receiving the radio waves having the wavelength regarding the same as the length in the longitudinal direction of the decoration metals 8, 8, 10 and 10. In harmonics having the frequency which is an integral multiple of the fundamental waves of transmission radio waves generated by an electronic key 2, one having the wavelength of comparable length in the longitudinal direction of the electronic key 2, in particular, is prevented from resonating with the decoration metals 8, 8, 10 and 10, and the output strength of the harmonic is prevented from resulting in marked increase. COPYRIGHT: (C)2010,JPO&INPIT
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