| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna system capable of easily and independently fine-adjusting a deviation of each of selected resonance frequencies at less expense in labor. SOLUTION: In the antenna system 10A with an antenna pattern 13 formed on a principal side 11a of a board 11 from a feeding point 15 to a termination 17 and including N resonance frequencies specified antenna lengths, a selection means selects one of the N resonance frequencies and a fine-adjustment section can independently fine adjust the deviation in each selected resonance frequency. The antenna pattern 13 is formed to be a meander shape. The selection means comprises (N-1) changeover switches 21A, 22A located at prescribed foldback points of the antenna pattern. The fine-adjustment section comprises (N-1) element length adjustment blocks 31, 32 whose one-side end 31a (32a) is respectively connected to one moving contact of the (N-1) changeover switches. COPYRIGHT: (C)2007,JPO&INPIT
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