| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve omnidirectionality (omnidirectivity) with a single dipole antenna. <P>SOLUTION: A wireless authentication device has the flat dipole antenna and a semiconductor chip connected to the dipole antenna, and receives power and a signal from a radio wave received by the dipole antenna and emits an output from the dipole antenna. The dipole antenna is folded back to such angles as the semiconductor chip is displaced from the directions of extension of the dipole antenna. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
