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Experimental assessment of a design criterion for RFID wearable antennas

An experimental approach is proposed to validate the theoretical energy-based considerations for wearable UHF RFID antenna design. On the basis of numerical analysis, it has been shown that wearable antennas presenting an energy density peak far from the antenna border are more robust with respect to the distance from the human body. A flexible and cost-effective RFID tag characterization and performance evaluation platform is used here to validate the theoretical approach by considering a grounded UHF RFID tag.