发明名称 |
ANTENNA DEVICE AND RADIO FREQUENCY IC DEVICE |
摘要 |
An antenna device is arranged to transmit or receive a radio frequency communication signal to or from an external device such as a reader/writer, and is arranged such that an antenna resonance circuit including an antenna coil and a capacitor is connected to an additional resonance circuit including an inductor and a capacitor. A radio frequency IC device preferably includes the antenna device and a radio frequency IC. The antenna device is constructed such that a change in characteristics thereof caused by a change in the distance between a radio frequency IC device and a reader/writer is minimized, and the radio frequency IC device performs communication with high reliability.
|
申请公布号 |
US2012235871(A1) |
申请公布日期 |
2012.09.20 |
申请号 |
US201113232102 |
申请日期 |
2011.09.14 |
申请人 |
TANIGUCHI KATSUMI;SASAKI JUN;KATO NOBORU;MURATA MANUFACTURING CO., LTD. |
发明人 |
TANIGUCHI KATSUMI;SASAKI JUN;KATO NOBORU |
分类号 |
H01Q1/50 |
主分类号 |
H01Q1/50 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|