| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an RFID tag that can prevent information stored therein from being read without losing convenience. <P>SOLUTION: The tag is arranged such that a resistor 33 is inserted into a loop antenna 20 in series and both ends are short-circuited by a short circuit line 34, thereby changing a reception state from a high reception sensitivity state obtained by short-circuiting both ends of the resistor 33 to a low reception sensitivity state obtained by separating the short circuit line 34 from both ends of the resistor 33 and inserting the resistor 33 in series between the loop antenna 20 and IC circuit part 32. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
