发明名称 |
ANTENNA DEVICE AND METHOD OF SETTING RESONANT FREQUENCY OF ANTENNA DEVICE |
摘要 |
In antenna device, a coil conductor of an antenna coil module and a conductor layer at least partially overlap. A current flows in the conductor layer to block a magnetic field generated by a current flowing in the coil conductor. A current flows along the periphery of a slit and around the periphery of the conductor layer due to a cut-edge effect. Since magnetic flux does not pass through the conductor layer, magnetic flux attempts to bypass the conductor layer along a path in which the conductor opening of the conductor layer is on the inside and the outer edge of the conductor layer is on the outside. As a result, the magnetic flux generates large loops that link the inside and the outside of a coil conductor of an antenna on a reader/writer side to couple an antenna device and the antenna on the reader/writer side. |
申请公布号 |
US2013300622(A1) |
申请公布日期 |
2013.11.14 |
申请号 |
US201313941760 |
申请日期 |
2013.07.15 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
KATO NOBORU;TANIGUCHI KATSUMI;SASAKI JUN;GOCHI NAOKI |
分类号 |
H01Q7/00 |
主分类号 |
H01Q7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|