发明名称 |
Sizing of an electromagnetic transponder system for an operation in extreme proximity |
摘要 |
A system of contactless electromagnetic transmission between a terminal including a series oscillating circuit for generating an electromagnetic field and a transponder including a parallel oscillating circuit, these oscillating circuits being sized so that the coupling coefficient between them strongly decreases when the distance separating the transponder from the terminal becomes greater than a predetermined value.
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申请公布号 |
US2006172702(A1) |
申请公布日期 |
2006.08.03 |
申请号 |
US20060391142 |
申请日期 |
2006.03.28 |
申请人 |
ST MICROELECTRONICS |
发明人 |
WUIDART LUC;ENGUENT JEAN-PIERRE |
分类号 |
H04B7/00;G06K7/08;G06K19/07;H04B1/59;H04B5/00 |
主分类号 |
H04B7/00 |
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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