The utility of negative refractive index metamaterials as passive UHF RFID tag inlays

In this paper, we present a novel application of NRM´s in passive UHF radio frequency identification (RFID) tag inlay (substrate). The passive RFID tag is typically manufactured to consist of an antenna and an asynchronous integrated circuit (ASIC) chip, as well as connection pads on a PET substrate. Here, we propose an implementation as depicted, where the substrate is a NRM. In an attempt to predict the potential utilization of NRM´s, a detail simulation is presented of the various NRI values (-mu_r and -epsiv_r).