| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate influences upon communication by the limitation of an installation part of an information reader/writer. <P>SOLUTION: The repeater comprises a first antenna coil 31 electromagnetically coupled with an antenna coil 11 that an information reader/writer 10 has, a second antenna coil 32 serially connected with the first antenna coil 31 and electromagnetically coupled with an antenna coil 21 that a non-contact information medium 20 has, and a tuning capacitor 33 serially connected with the first antenna coil 31 and the second antenna coil 32. The first antenna coil 31, the second antenna coil 32 and the tuning capacitor 33 are realized by forming a resonance circuit 34 which resonates in the same resonant frequency as the frequency of a resonance circuit 13 that the information reader/writer 10 has and as the frequency of a resonance circuit 23 that the non-contact information medium 20 has. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
