| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an antenna system that is simply manufactured and eliminates the need for taking into account a conversion efficiency, leakage of an electromagnetic wave, cost reduction, and selection of an installed place or the like. <P>SOLUTION: The antenna system is provided with: a ferrite core 11 formed to be a plate shape or a ring shape; a coil 12 directly wound on the side faces of the ferrite core 11; and a tuning capacitor 2 and a matching capacitor 3 connected to the coil 12 so that the antenna system can simply be manufactured and the antenna system is configured, which eliminates the need for taking into account a conversion efficiency, leakage of an electromagnetic wave, cost reduction, and selection of an installed place or the like. The antenna system disclosed herein also forms magnetic field polarization existing only on a plane of the ferrite core on which a conductor pattern is printed by directly printing the conductor pattern onto the ferrite core. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
