发明名称 |
Wireless unit having an antenna with controllable 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.
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申请公布号 |
EP1852979(A3) |
申请公布日期 |
2007.11.21 |
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 |
H04B1/38;H01Q1/22;H01Q1/24;H01Q1/38;H01Q9/04;H01Q9/30;H01Q23/00 |
主分类号 |
H04B1/38 |
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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