—With the emergence of UWB systems and, in particular, the pulsed modulations, the modeling of antennas as Linear Time Invariant (LTI) systems has been studied in the last years extensively. This approach offers the advantage of modeling the antennas in frequency domain as well as in time domain. Further, the performance in terms of dispersion is taken into… (More)
—This paper proposes some approaches to model Ultra Wideband (UWB) antenna arrays. Based on the array factor, often stipulated as not adapted for the description of the properties of UWB arrays in the literature, an analytical expression of the beampattern is developed. The achieved results are coherent with other formulations and empiric studies proposed… (More)
Nowadays, several RFID systems are commercially available for numerous applications such as control assess, transportation, supply chain, etc. However, RFID tags and sensors association could provide a lot of new solutions in order to develop notably green projects such as more efficient energy production chain, best control waste, recycling, and other… (More)
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—This paper presents a new method to evaluate the performance of passive UHF Radio Frequency Identification (RFID) tags based on the analysis of its Power Spectral Density (PSD) calculated over time observations directly in the Radio Frequency band (RF). The PSD analysis is facilitated with the manipulation of the air interface from RFID signals in order to… (More)