| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent an RFID chip from imposing restrictions on electric power to be transmitted and received between a radio tag and the reader/writer of the radio tag. <P>SOLUTION: The radio tag antenna comprises a main loop antenna including an RFID chip and a loop antenna, and a sub loop antenna formed adjacently near the main loop antenna. The resonance frequency of a resonance circuit comprising the main loop antenna and the sub loop antenna is designed to be the resonance frequency of a resonance circuit comprising the chip impedance of the RFID chip and the main loop antenna. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
