Chipless RFID tag with an improved magnitude and robustness of RCS response

This paper describes properties of a new 20-bit chi pless RFID tag of the size 52 × 50 mm , which exhibits an improved magnitude and robustness of the radar cross section (RCS). The tag is based on a novel slots-in-plate array approach, which is complementary to a typical tag consisting of an arr ay of single resonators. In order to eliminate the detuning effe ct of the missing or shortening slots representing ‘0’ bit information othe resonances of neighbouring slots signifying ‘1’ bit information, the modification of the inter-element arrangement was proposed. Both wa ys of ‘0’ bit information coding were studied and compared.

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