发明名称 |
METHOD FOR PRODUCING ANTENNA DEVICE |
摘要 |
A method for manufacturing an antenna device may include a first step of forming an antenna circuit so that the resonance frequency of the antenna circuit will be lower than an oscillation frequency of the reader/writer. The antenna circuit includes an antenna coil that receives the magnetic field transmitted from the reader/writer and a capacitor electrically connected to the antenna coil. The manufacturing method also includes a second step of affixing a magnetic sheet to the antenna coil via an adhesive. The magnetic sheet is at a face-to-face position with respect to the antenna coil and is configured to change the inductance of the antenna coil. The adhesive is of a film thickness to change the inductance so that the resonance frequency of the resonance circuit will be coincident with the oscillation frequency depending on the spacing between the antenna coil and the magnetic sheet.
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申请公布号 |
US2012227248(A1) |
申请公布日期 |
2012.09.13 |
申请号 |
US201213365575 |
申请日期 |
2012.02.03 |
申请人 |
ORIHARA KATSUHISA;SUGITA SATORU;SAITO NORIO;KANNO MASAYOSHI;SONY CHEMICAL & INFORMATION DEVICE CORPORATION |
发明人 |
ORIHARA KATSUHISA;SUGITA SATORU;SAITO NORIO;KANNO MASAYOSHI |
分类号 |
H01P11/00 |
主分类号 |
H01P11/00 |
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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