发明授权
US07248221B2 Radio tag antenna structure for an optical recording medium and a case for an optical recording medium with a radio tag antenna
失效
用于光学记录介质的无线电标签天线结构和具有无线电标签天线的光学记录介质的情况
- 专利标题： Radio tag antenna structure for an optical recording medium and a case for an optical recording medium with a radio tag antenna
- 专利标题（中）： 用于光学记录介质的无线电标签天线结构和具有无线电标签天线的光学记录介质的情况
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申请号： US10999690申请日： 2004-11-30
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公开(公告)号： US07248221B2公开(公告)日： 2007-07-24
- 发明人: Manabu Kai , Yasuyuki Oishi , Toru Maniwa , Hiroyuki Hayashi , Andrey Andrenko
- 申请人： Manabu Kai , Yasuyuki Oishi , Toru Maniwa , Hiroyuki Hayashi , Andrey Andrenko
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Katten Muchin Rosenman LLP
- 优先权： JP2004-205829 20040713
- 主分类号： H01Q1/38
- IPC分类号： H01Q1/38
摘要：
An antenna comprises a dielectric member, an antenna pattern formed on one surface of the dielectric member, and a ground pattern formed on the other surface of the dielectric member. A part or the whole of the antenna is implanted in a dielectric layer on the side from which a laser beam does not come in of an optical recording medium symmetrically having a metal layer reflecting the laser beam and the dielectric layer, thereby to provide a radio tag antenna structure for an optical recording medium which is simple, is small-sized, and can secure necessary reading performance.
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