发明名称 |
Antenna, and wireless module, wireless unit and wireless apparatus having the antenna |
摘要 |
In an antenna 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, wireless unit and wireless apparatus using this antenna, the antenna is comprised of a transmission line, and variable capacitance means connected to this transmission line, and the variable capacitance means controls the resonant frequency.
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申请公布号 |
US7714787(B2) |
申请公布日期 |
2010.05.11 |
申请号 |
US20060448128 |
申请日期 |
2006.06.07 |
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 |
H01Q1/24;H01Q9/04;H01Q9/30;H01Q23/00;H04B1/38 |
主分类号 |
H01Q1/24 |
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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