Effect of Skin Dielectric Properties on the Read Range of Epidermal UHF RFID Tags

This paper presents an investigation of the effect of human tissue conductivity and permittivity on the performance of epidermal transfer tattoo UHF Radio Frequency Identification (RFID) tags. The measurements were carried out on twenty individuals and the variations in the measured dielectric properties correlate well with variations in the measured tag read range on the individuals and to a lesser extent with their BMI values. Simulation results also showed the effects of permittivity and conductivity on the designed resonance frequency of the RFID tag.

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