发明名称 METHOD AND SYSTEM FOR OPTIMIZED READING OF A RADIO FREQUENCY COMMUNICATION TRANSPONDER WITH THE AID OF A PASSIVE RESONANT CIRCUIT
摘要 The invention relates to a method of reading RF transponders disposed in one and the same magnetic interrogation field, in which a magnetic coupling of the transponders is ensured with a passive resonant circuit during reading. The method is distinguished in that the passive antenna of the resonant circuit is associated with at least one transponder antenna, and the passive resonant circuit is tuned in such a way that the resonant frequency resulting from the association corresponds to one of the frequencies of the emission side bands of the transponder to be read. The invention also relates to the system corresponding to the method, a transponder structure and an object containing the transponder, in particular a travel document.
申请公布号 US2009224888(A1) 申请公布日期 2009.09.10
申请号 US20090440849 申请日期 2009.04.08
申请人 GEMALTO SA 发明人 CARUANA JEAN-PAUL
分类号 H04Q5/22;G06K19/06 主分类号 H04Q5/22
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