发明名称 |
RFID tag communication apparatus |
摘要 |
This disclosure discloses an RFID tag communication apparatus comprising: a housing including a bottom surface; an antenna provided at a distance h from the bottom surface; and a radio frequency circuit including a carrier wave transmitting device that generates a carrier wave of a frequency fc; wherein the correlation as fo<fc<fm is satisfied under the conditions of a resonance frequency fm of the antenna when the bottom surface is fixed in contact with a metal surface, a resonance frequency fo of the antenna when the bottom surface is fixed in contact with a non-metal surface.
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申请公布号 |
US2009295547(A1) |
申请公布日期 |
2009.12.03 |
申请号 |
US20090454664 |
申请日期 |
2009.05.21 |
申请人 |
BROTHER KOGYO KABUSHIKI KAISHA |
发明人 |
TAKEDA MICHIHIRO;NAKAMURA MITSURU;FUKUI TOMOYASU |
分类号 |
H04Q5/22 |
主分类号 |
H04Q5/22 |
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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