Patent ID: 7540428

Claim:
A radio-frequency-identification tag antenna comprising: a film base having a rectangular shape and having pads for mounting a chip; a first antenna pattern and a second antenna pattern that are disposed on the film base to be connected to the chip via the pads for transmission and reception, the first antenna pattern extending along longitudinal side of the film base, the second antenna pattern extending in parallel with the first antenna pattern; and a cut line that is formed on the film base between the first and the second antenna patterns along the first and the second antenna patterns from an inside near the pads to an outer edge of the film base, wherein the second antenna pattern has a folding section and when the second antenna pattern is folded or bent at the folding section, the second antenna pattern has a portion extending from the rectangular shape in a predetermined direction, wherein the first and the second antenna patterns are formed on at least one of a front surface and a back surface of the film base, and wherein when the first and the second antenna patterns are formed on both the front surface and the back surface of the film base, conductive through-holes, through which the first and the second antenna patterns formed on the front surface and the back surface become conductive, are provided on the film base.