Chipless passive RFID tag
AssigneesInstitut Polytechnique De Grenoble, Universite de Savoie
InventorsEtienne Perret, Smail Tedjini, Nair Deepn Vasudevan, Frédéric Garet, Lionel Duvillaret, Arnaud Maurice Vena
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Abstract
A chipless RFID tag comprises a plurality of disjoint parallel conducting bands formed on a dielectric support, in which conducting bridges interlink neighboring conducting bands, the conducting bridges delimiting, between the conducting bands, portions of dielectric bands of distinct lengths, each portion of dielectric brand determining a resonant frequency of the tag, the set of resonant frequencies of the tag defining an identification code.
Claims9
A chipless RFID tag comprising a plurality of separate parallel conductive strips formed on a dielectric support, wherein conductive bridges interconnect neighboring conductive strips, the conductive bridges delimiting, between the conductive strips, dielectric strip portions of different lengths, each dielectric strip portion determining a resonance frequency of the tag, the resonance frequencies of the tag altogether defining an identification code.
A method for coding data readable by an electromagnetic wave transceiver, comprising the steps of:
- forming a plurality of separate parallel conductive strips on a dielectric support;
- forming conductive bridges interconnecting neighboring conductive strips, so that the conductive bridges delimit, between the conductive strips, dielectric strip portions of different lengths, each dielectric strip portion determining a resonance frequency;
- and
- associating with each resonance frequency a portion of the data.
Dependencies are inferred from the claim text.