We report in this paper the study of the identification of persons using a Radio Frequency IDentification (RFID) chipless tag. Obtained results show that a robust identification is possible due to the capability of the tag to generate a cross polarization that is used for the identification. Simulations and measurements of a chipless tag placed on a body have been made. By this way, the tag could be easily designed to be an integral part of a clothing.

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We report in this paper the design and the realization of a compact wearable monopole antenna directly placed over an Artificial Magnetic Conductor (AMC), which is located directly on the body. The major contribution is that there is no space between the monopole and the AMC, or between the AMC and the body. Simulation results and measurements are in good agreement and show that the antenna's performances are as good as the best ones reported so far in the literature, while having a smaller volume.The antenna operates at 1.92 GHz with a bandwidth of 8%. The reflection coefficient of the antenna is −35 dB. The measurement of the antenna gain provides a value of 4.3 dBi with a half-power beamwidth of 70 • and a front-to-back radiation ratio of 15.8 dB. Measurement and simulation results also show that the AMC isolates well the monopole from the body: the localized Specific Absorption Rate (SAR) value calculated with 1 g of tissue is 0.34 W/kg with an injected power of 1 W. The antenna with the AMC is well adapted for wearable applications.