| 摘要 |
<p>[PROBLEMS] To provide an excellent impedance matching status of an antenna and an IC circuit section and surely perform long distance communication. [MEANS FOR SOLVING PROBLEMS] A wireless tag circuit element (To) is provided with an IC circuit section (151) for storing information, and an antenna (152) connected with the IC circuit section (151), and performs information transmission and reception. The IC circuit section (151) variably sets an impedance corresponding to an input signal from outside, and has a control circuit/memory (155), capacitors (C1-4), fuses (F11-42) and FETs (t11-42) for maintaining such set status in a nonvolatile manner.</p> |
