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.
申请公布号 US8242913(B2) 申请公布日期 2012.08.14
申请号 US20090454664 申请日期 2009.05.21
申请人 TAKEDA MICHIHIRO;NAKAMURA MITSURU;FUKUI TOMOYASU;BROTHER KOGYO KABUSHIKI KAISHA 发明人 TAKEDA MICHIHIRO;NAKAMURA MITSURU;FUKUI TOMOYASU
分类号 G08C19/12;G08B13/14;H01Q1/12 主分类号 G08C19/12
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