| 发明名称 |
ANTENNA DEVICE, CARD-TYPE COMMUNICATION DEVICE, AND COMMUNICATION TERMINAL APPARATUS |
| 摘要 |
An antenna device includes an antenna resonance circuit connected to a power supply circuit and a variable-frequency resonance element including a resonance circuit which is coupled with the antenna resonance circuit via an electromagnetic field. The resonant frequency of the resonance circuit is variable within a predetermined frequency band. |
| 申请公布号 |
US2014246504(A1) |
申请公布日期 |
2014.09.04 |
| 申请号 |
US201414278100 |
申请日期 |
2014.05.15 |
| 申请人 |
Murata Manufacturing Co., Ltd. |
发明人 |
IKEMOTO Nobuo;NAKAISO Toshiyuki;GOUCHI Naoki;IKEDA Naoto |
| 分类号 |
G06K19/073;G06K19/077 |
主分类号 |
G06K19/073 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. (canceled) |
| 地址 |
Nagaokakyo-shi JP |
