发明授权
- 专利标题： Antenna and communication system using the same
- 专利标题（中）： 天线和通信系统使用相同
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申请号： US10823633申请日： 2004-04-14
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公开(公告)号： US07023395B2公开(公告)日： 2006-04-04
- 发明人: Masahiro Ohara , Shinji Kamaeguchi , Toru Arakawa
- 申请人： Masahiro Ohara , Shinji Kamaeguchi , Toru Arakawa
- 申请人地址： JP Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP2003-286676 20030805
- 主分类号： H01Q7/08
- IPC分类号： H01Q7/08
摘要：
An antenna includes a first core made of magnetic material, a coil including a conductive wire wound around a predetermined region of the first core, and a second core made of magnetic material. The second core is operable to move an inside of the coil. The antenna has a resonant frequency adjustable over a wide rage.
公开/授权文献
- US20050030243A1 Antenna and communication system using the same 公开/授权日：2005-02-10