| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wireless tag operable at two frequency bands of 900 MHz band and 2.4 GHz band. <P>SOLUTION: A parasitic element 13 with a half wavelength resonated with the 2.4 GHz band formed of a conductive pattern is arranged in a folded dipole antenna 12 resonated at 900 MHz band and formed of a conductive pattern on a dielectric sheet at the opposite side of the folded dipole antenna 12 with the dielectric sheet sandwiched inbetween, and the impedance matching is realized for the two frequency bands, so that the wireless tag operable for the two frequency bands can be provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
