Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"Uhf rfid"”.
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UHF RFID Antenna Impedance Matching Techniques
<p>Radio Frequency Identification (RFID) systems use electromagnetic signals to wirelessly identify and track RFID-tagged objects. A reader transmits a carrier wave request signal to an RFID tag, which then transmits a unique identification signal back to the reader. Applications include supply …
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Enhancing Signal Coverage for UHF RFID Systems
… long been one of the most crucial problems in UHF RFID systems. In this thesis, the problem is tackled using a combination of antenna design, mathematical modelling and algorithm development. A novel UHF RFID reader antenna with 2D beam-scanning ability, a wide axial ratio (AR) beamwidth and …
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Optimum Performance of UHF RFID Tags in Dielectric Environment
… High Frequency Radio Frequency Identification (UHF RFID) technology has gained prominence in recent years. It is being deployed extensively in supply chain and asset tracking by retailers to better control their inventory. The main drawback of UHF RFID tag antenna is that it is sensitive to the …
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Graphical real-time simulation tool for passive UHF RFID environments
… implementation of a real-time simulation tool, RFID Vis, that is used to simulate a UHF RFID environment. The simulation tool simulates environments containing to pallets of cases as is common in parts of the supply chain. The simulation tool consists of two parts, a graphical front end which …
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A Low-Cost, Scalable Platform for Sub-Centimeter UHF RFID Positioning
… While there are many approaches to localization, RFID micro-location is a growing technology that has been shown to be fast and robust, and can leverage the existing infrastructure of billions of RFID tags. However, many prior RFID positioning systems lack portability, scalabiltiy, and …
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A Novel Long-Range Passive UHF RFID System over Twisted-pair Cable
Radio Frequency Identification (RFID) is one of the most representative, rapidly growing, and highly extendable technologies, which uses electromagnetic waves in accordance with specific communications standards and regulations to identify, track, or even localise desired objects. However, due to …
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Indoor Localisation System and Methods using Passive UHF RFID with A Mobile Platform
… which combines radio frequency identification (RFID) technology with a mobile platform and development of localisation methods. The system designed in this dissertation is composed of ultra-high frequency (UHF) RFID passive tags, a mobile platform and a computer. UHF RFID passive tags are either …
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Low-Cost, Passive UHF RFID Tag Antenna-Based Sensors for Pervasive Sensing Applications
… meet this need. Radio Frequency IDentification (RFID) offers good potential for the development of pervasive sensors: RFID tags have a proven track record of large-scale, highly integrated deployment for object identification in the retail and consumer goods industry. Furthermore, the last decade …
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Towards low-cost context awareness on smart shelving using passive UHF RFID infrastructure
… infrastructure for smart shelving using passive UHF RFID tags and radio tomographic imaging (RTI) algorithms. Firstly, location estimations without fingerprinting in one direction can reach an accuracy of 91.7% on four tested objects. Secondly, the number of stacked layers from 1-3 when placing …
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A Damped Double Dipole UHF RFID Antenna with Application to Wireless Chemiresistive Gas Sensing
Ultra High Frequency (UHF) Radio Frequency Identification (RFID) tags provide an inexpensive framework for distributed sensing. Materials such as functionalized carbon nanotubes (CNTs) have been engineered to change in resistance when exposed to a variety of analytes. These materials have been …
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Passive EPC Class 1 Gen 2 UHF RFID sensor tag For health monitoring applications
… prototype of a passive EPC Class 1 Gen 2 UHF RFID sensor tag which is a preliminary step in realizing such a monitoring device. The prototype is capable of collecting 8-bit sensor (temperature, inertial, etc) data and transmits it in real-time through a RFID backscatter link to an UHF …
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A Dual Resonant Microstrip Antenna for UHF RFID in the Cold Chain Using Corrugated Fiberboard as a Substrate
… will help reducing food borne illness. Passive UHF RFID has been widely accepted to be a technology capable of increasing supply chain efficiency. Passive UHF RFID tags designed for supply chain application are tuned to work well on corrugated fiberboard boxes that are ubiquitous in the supply …
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Design and Modelling of Passive UHF RFID Tags for Energy Efficient Liquid Level Detection Applications. A study of various techniques in the design, modelling, optimisation and deployment of RFID reader and passive UHF RFID tags to achieve effective performance for liquid sensing applications
… Frequency Identification Technology. Passive UHF RFID tags have been designed, modelled and optimized. A simple rectangular tag, the P-shaped tag and S-shaped tag with UHF band frequency of operation (850-950 MHz) has been designed and modelled. Detailed parametric analysis of the rectangular …
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Application of radio-frequency identification (RFID) sensors for smart- monitoring applications in sewer systems
… ultra-high frequency radio identification (UHF-RFID)-based sensors for real-time monitoring applications in sewers. Example applications are detecting sewer blockages, I/I flow variations, pinpointing illicit connections, measuring surface velocities, and monitoring water depth in utility …
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RFID technology
Radio frequency identification (RFID) is the most attractive technology that enables companies to better track assets tools and inventory. RFID technology can also be used in different applications such as air port baggage and express parcel logistics across every industry. RFID technology is seen …
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Ultra high frequency (UHF) radio-frequency identification (RFID) for robot perception and mobile manipulation
… in the form of Ultra High Frequency (UHF) Radio-Frequency Identification (RFID) tags. Previous research has demonstrated the utility of infrastructure tags (affixed to walls) for robot localization; in this thesis, we specifically focus on tagging objects. Owing to their low-cost and …
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UHF Energy Harvesting and Power Management
… to operate these devices off harvested energy. UHF energy harvesting, as an enabling technology for the UHF RFID, stands out amongst other energy harvesting approaches as it does not heavily rely on the natural surrounding environment and also offers a very good wireless operating range from its …
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RFIDSim : a discrete event simulator for Radio Frequency Identification systems
This thesis presents RFIDSim, a discrete event process-oriented simulator designed to model Radio Frequency Identification (RFID) communication. The simulator focuses on the discovery and identification process of passive powerless RFID tags--a category of low cost tags that harvest all of their …
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Antenas pequeñas en UHF
… las comunicaciones satelitales y los sistemas UHF RFID; proponiendo soluciones novedosas para mejorar sus prestaciones como así también facilitar su diseño. Se presentarán dos antenas cuyo rasgo distintivo es que irradian ondas con polarización circular y están diseñadas a partir de elementos …
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