Ultrawide Bandwidth RFID: The Next Generation?

Abstract

International audience<p>Future advanced radio-frequency identification (RFID) systems are expected to provide both identification and high-definition localization of objects with improved reliability and security while maintaining low power consumption and cost. Ultrawide bandwidth (UWB) technology is a promising solution for next generation RFID systems to overcome most of the limitations of the current narrow bandwidth RFID technology such as: reduced area coverage, insufficient ranging resolution for accurate localization, sensitivity to interference, and scarce multiple-access capability. In this paper, a survey of current progress in the application of the UWB technology for RFID systems is presented with particular attention to low-complexity solutions for high-definition tag localization.</p> <p> </p

Wirelessly Powered Backscatter Communication Networks: Modeling, Coverage, and Capacity

“…On one hand, increasing β not only adds the probability of circuit power outage but also scales up transmission power for each node, which can lead to strong interference. On the other hand, β being too small leads to weak receive signal as well as larger effective interference set O given in (12). Both decrease P s .…”

Detection and accurate localization of harmonic chipless tags

“…Considering independent observations, we have: where f i (r i |p) is the p.d.f. of the ith observation conditioned on p given by 6 :…”

“…5 A B means that A − B is a non-negative definite. 6 For simplicity of notation, we do not indicate explicitly the dependence of d T and d Ri on p. 7 In fact, the ranging resolution of FM chirp radars is about c/2B.…”

“…The former does not offer good accuracies due to the unpredictable nature of the wireless fading phenomenon, Correspondence: davide.dardari@unibo.it WiLab, Department of Electrical, Electronic and Information Engineering (DEI) "Guglielmo Marconi", University of Bologna, Via Venezia 52, I-47521 Cesena, Italy whereas the latter suffers from phase ambiguity and clutter interference (i.e., the part of the interrogation signal backscattered by the surrounding environment). Other recent solutions exploit radically new technologies such as ultrawide bandwidth (UWB) [6][7][8].…”

A Two-Port Antenna for Wireless-Powered Uwb-Rfid Tags

“…ULTRAWIDEBAND (UWB) technology paves the way to realize the next generation radio-frequency identification (RFID) systems with improved performances and additional capabilities [1]. In these UWB enabled RFID (UWB-RFID) systems, there are two categories: active [2][3][4] and passive chipless ones [5,6].…”