| 摘要 |
PROBLEM TO BE SOLVED: To make it unnecessary to provide any capacitor having a large area for frequency synchronization. SOLUTION: In this non-contact tag, an antenna coil formed of an antenna conductor 120 on the surface and an antenna coil formed of an antenna conductor 130 on the back face are arranged so as to faced through an antenna substrate 110 having a prescribed dielectric constant to each other. Thus, a stray capacitance is generated between those antenna coils. Then, a parallel resonance circuit is composed of the stray capacitance and the inductance of the antenna coils. |
