| 发明名称 |
Wireless apparatus comprising an antenna having an adjustable resonance frequency |
| 摘要 |
<p>In an antenna (103, 103A) that has high sensitivity to frequencies of narrow bands and over a wide band and that can be small-sized, and in a wireless module (102, 108), wireless unit (102, 108) and wireless apparatus (101, 110) using this antenna, the antenna is comprised of a transmission line, (11, 12) and variable capacitance means (13, 13A, 13B) connected to this transmission line, and the variable capacitance means (13, 13A, 13B) controls the resonant frequency.</p> |
| 申请公布号 |
EP1852979(A2) |
申请公布日期 |
2007.11.07 |
| 申请号 |
EP20070016077 |
申请日期 |
2006.06.05 |
| 申请人 |
HITACHI, LTD.;HITACHI MEDIA ELECTRONICS CO., LTD.;HITACHI CABLE LTD. |
发明人 |
ADACHI, SATOSHI;KATAGISHI, MAKOTO;MURATA, IKUO;IWAMURA, MASUMI;TAKEI, KEN;SUGIYAMA, TAKAHIRO;SHIRAKAWA, YOHEI |
| 分类号 |
H04B1/18;H01Q1/22;H01Q1/24;H01Q1/38;H01Q9/04;H01Q9/14;H01Q9/30;H01Q23/00;H04B1/04;H04B1/38 |
主分类号 |
H04B1/18 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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