| 摘要 |
PROBLEM TO BE SOLVED: To easily increase a frequency band capable of wireless communication without scale expansion. SOLUTION: An antenna structure includes: a first antenna element 2 which resonates in a predetermined frequency band; a second antenna element 3 which resonates in a predetermined second frequency band different from the first frequency band; and a short-circuiting part 4 for guiding a current I of a predetermined third frequency band different from the first and second frequency bands to a ground G. A partial area 7 including an open end 6 of the first antenna element 2 and the second antenna element 3 are disposed adjacently. The current I of the third frequency band is transferred from the second antenna element 3 to the partial area 7 of the first antenna element 2 by electromagnetic coupling. Further, the current I passes through the partial area 7 of the first antenna element 2 to electrify the short-circuiting part 4. The current electrification resonates the second antenna element 3, the partial area 7 of the first antenna element 2 and the short-circuiting part 4 in the third frequency band and functions them as one antenna. COPYRIGHT: (C)2011,JPO&INPIT
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