| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that a receiving voltage level is lowered by the influence of an eddy current generated on a conductor article of metal or the like when a data carrier is mounted on the conductor article. SOLUTION: This data carrier is provided with a transmitting/receiving antenna composed of a first parallel resonance circuit having a first coil for generating induced electromotive force based on electromagnetic waves from a reader/writer and a second parallel resonance circuit having a second coil, which is magnetically coupled with the first coil, for generating induced electromotive force based on electromagnetic waves from the reader/writer. |
