| 摘要 |
PROBLEM TO BE SOLVED: To obtain a resonance tag which is easily manufactured and can obtain a stable resonance characteristic by providing at least two specified circuit-shape coils on both faces of a dielectric film while making the coils face each other. SOLUTION: At least two circuit-shaped coils in which thickness (width) of a coil-shaped circuit is >=1/50 against the length of an outermost circumference of the circuit and the number of coil windings is <=3 are provided on both faces of a dielectric film while facing each other. That is, coil-shaped metal foil 1C1 and 1C2 covered with thermal bondable resin is pasted on both faces of a dielectric sheet 23 and, the sheet 23 is pasted on a board 3. In such a case, when a thermal adhesive film such as a polyethylene film is used for the sheet 23, a coil-shaped metal foil that is not covered with thermal bondable adhesive can be used. Thick paper, etc., where beautiful printing, etc., is applied to the surface is used for the board 3. Thus, capacitance and inductance are easily adjusted, and the impedance of the resonance circuit is easily adjusted.
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