PROBLEM TO BE SOLVED: To provide a film antenna whose antenna characteristics are not influenced by a housing.;SOLUTION: The antenna characteristics not influenced by the housing can be obtained by forming a recessed groove part 26 on a ground part 13 fitted to the housing, forming, on one wall 26a of the groove part 26, a 1st radiation element part 14 extending toward the other wall 26b, and forming, on the other wall 26b, a capacitive coupling part 27 capacitively coupled with the 1st radiation element part 14 across a prescribed gap (g).;COPYRIGHT: (C)2006,JPO&NCIPI
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