| 摘要 |
PROBLEM TO BE SOLVED: To materialize a broadband antenna which is easily made compact. SOLUTION: This film antenna includes: a base film 23 formed of an insulating material; and antenna elements 21 and 22 of film-like electric conductors formed on the base film 23, wherein each of the antenna elements 21 and 22 has a planar shape in which at least an end face and a diagonal line from a feed point to a tip have two different lengths, a core wire 31 of a coaxial cable 30 is connected to the antenna element 21 at the feed point, an external conductor 32 of the coaxial cable 30 is connected to the antenna element 22 at the feed point, and the antenna elements 21 and 22 have an area as a capacitor for performing impedance matching. COPYRIGHT: (C)2009,JPO&INPIT
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