Results 191 to 200 of about 20,719 (245)
International Journal of Mathematics, 2012 UHF flows are the flows obtained as inductive limits of flows on full matrix algebras. We will revisit universal UHF flows and give an explicit construction of such flows on a UHF algebra Mk∞ for any k and also present a characterization of such flows. Those flows are UHF flows whose cocycle perturbations are almost conjugate to themselves.
A. KISHIMOTO
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UHF RFID Portal Discrimination
2025 IEEE International Conference on RFID Technology and Applications (RFID-TA)This study addresses the issue of discrimination in UHF RFID portals used in logistics. Applying RFID technology has become an efficient method for tracking the status of various objects in many industries. We experiment with a novel approach for discrimination in UHF RFID portals, where we leverage temporal autocorrelation information present in ...
Loussert, Christophe +4 more
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2016 IEEE International Conference on RFID (RFID), 2016 In this paper a method to test and measure UHF RFID system is presented. The proposed method allows to characterize a RFID UHF tag independently of its antenna. It does not need additional matching circuit and can be used on an automatic prober. Moreover, its main advantages are to determine the characteristics of the chip while the latter is working ...
Emmanuel Bergeret +3 more
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UHF ERES Antenna for UHF RFID Applications
2020 23rd International Microwave and Radar Conference (MIKON), 2020This paper presents Electronically Reconfigurable Superstrate (ERES) antenna capable of modifying the shape of the radiation pattern in an uncomplicated way. The approach adopted in this concept is based on switching the state of passive patch elements placed on an additional layer located above a simple microstrip patch antenna. In order to change the
R. Szymczuk +4 more
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IEEE Transactions on Broadcasting, 1999
The implementation of DTV is forcing every television broadcaster to purchase a new antenna. Choosing the best antenna to meet all of the station's needs is not a simple task. With tower space at a premium, tower leasing rates soaring, and FCC deadlines approaching quickly, the broadcaster faces new and non-traditional issues-for example: Do I co ...
D. Casciola, G. L. Miers, R. A. Surette
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The implementation of DTV is forcing every television broadcaster to purchase a new antenna. Choosing the best antenna to meet all of the station's needs is not a simple task. With tower space at a premium, tower leasing rates soaring, and FCC deadlines approaching quickly, the broadcaster faces new and non-traditional issues-for example: Do I co ...
D. Casciola, G. L. Miers, R. A. Surette
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IEEE Journal on Selected Areas in Communications, 1989
The authors detail the results of narrowband propagation measurements performed at five factories. The extensive empirical data indicate that path loss is dependent upon local surroundings and is log-normally distributed, temporal fading is Rician, and small-scale signal fluctuations due to receiver motion are primarily Rayleigh, although Rician and ...
Theodore S. Rappaport, Clare D. McGillem
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The authors detail the results of narrowband propagation measurements performed at five factories. The extensive empirical data indicate that path loss is dependent upon local surroundings and is log-normally distributed, temporal fading is Rician, and small-scale signal fluctuations due to receiver motion are primarily Rayleigh, although Rician and ...
Theodore S. Rappaport, Clare D. McGillem
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UHF Propagation in Indoor Hallways
IEEE Transactions on Wireless Communications, 2004A new model for UHF propagation in large buildings is presented. This model relies on knowledge of the interior arrangement of the building without requiring much detail. The guiding of radiation along hallways is the most significant propagation process at distances of more than 10 m from the transmitter.
Dana Porrat, Donald C. Cox
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Standards for Passive UHF RFID
GetMobile: Mobile Computing and Communications, 2020Passive ultra-high frequency (UHF) radio frequency identification (RFID) technology has been widely adopted by retail and other industries for serialized item-level identification and data sharing. This article introduces the standards that support and define all procedures in various passive UHF RFID applications.
Jian Zhang 0028 +3 more
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