Relevant bibliographies by topics / UHF Tags

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'UHF Tags'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "UHF Tags"

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Gigac, Juraj, Mária Fišerová, Maroš Kováč, and Svetozár Hegyi. "PASSIVE UHF RFID TAGS WITH THERMAL-TRANSFER-PRINTED ANTENNAS." Materiali in tehnologije 55, no. 2 (2021): 277–82. http://dx.doi.org/10.17222/mit.2020.184.

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Papers for the thermal transfer printing of UHF RFID antennas were prepared by coating and calendering. Real and imaginary components of the impedance of the UHF RFID antennas depended on their design, coating composition and conditions of paper calendering. Passive UHF RFID tags were constructed from antennas and chips whose real and imaginary components of impedance in the 860–960 MHz frequency band were at approximately the same level. The communication quality of passive UHF RFID tags was evaluated by measuring the reading range using the designed UHF RFID reading unit. The reading range of experimental UHF RFID tags with printed antennas on paper and commercial UHF RFID tags with chemically etched antennas on a PET film were identical in the 860 MHz frequency.
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Milosevic, Nemanja, and Branko Kolundzija. "Electromagnetic modeling of UHF RFID tags." Serbian Journal of Electrical Engineering 8, no. 1 (2011): 1–7. http://dx.doi.org/10.2298/sjee1101001m.

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Paper presents a method for analysis of UHF RFID tags. After a brief overview of RFID system and UHF tags an electromagnetic (EM) simulation of tags in WIPL-D software was conducted. Electrical matching was performed after which tags were excited by a uniform EM wave, induced powers were measured and tag characteristics were compared.
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He, Han, Lauri Sydänheimo, Johanna Virkki, and Leena Ukkonen. "Experimental Study on Inkjet-Printed Passive UHF RFID Tags on Versatile Paper-Based Substrates." International Journal of Antennas and Propagation 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/9265159.

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We present the possibilities and challenges of passive UHF RFID tag antennas manufactured by inkjet printing silver nanoparticle ink on versatile paper-based substrates. The most efficient manufacturing parameters, such as the pattern resolution, were determined and the optimal number of printed layers was evaluated for each substrate material. Next, inkjet-printed passive UHF RFID tags were fabricated on each substrate with the optimized parameters and number of layers. According to our measurements, the tags on different paper substrates showed peak read ranges of 4–6.5 meters and the tags on different cardboard substrates exhibited peak read ranges of 2–6 meters. Based on their wireless performance, these inkjet-printed paper-based passive UHF RFID tags are sufficient for many future wireless applications and comparable to tags fabricated on more traditional substrates, such as polyimide.
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Catarinucci, Luca, Riccardo Colella, Mario De Blasi, Luigi Patrono, and Luciano Tarricone. "Experimental Performance Evaluation of Passive UHF RFID Tags in Electromagnetically Critical Supply Chains." Journal of Communications Software and Systems 7, no. 2 (2011): 59. http://dx.doi.org/10.24138/jcomss.v7i2.179.

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Radio Frequency Identification is going to play a veryimportant role as auto-identification solution for manyapplication scenarios, where item-level tagging and highperformance are crucial. In such a context, the use of passive Ultra High Frequency (UHF) tags is strongly suggested but, unfortunately, general-purpose commercial tags could not meet all the requirements in presence of critical operating conditions, including the presence of metals and liquids, the misalignment between tag and reader antennas, and the need of multiple reading of tags. In this paper, the main features that a UHF tag should own to work properly in the whole supply chain are presented. A tag, named below Enhanced tag, satisfying all theindividuated requirements has been also realized and validated in a controlled test environment simulating the pharmaceutical supply chain. Tests have been focused on the above-mentioned critical conditions. The performance of the Enhanced tag, in terms of successful read rate, has been compared with that of some commercial Far Field and Near Field UHF tags. The experimental results are impressive and clearly demonstrate that ad hoc Far Field UHF tags are able to effectively solve many of the performance degradation problems affecting generalpurpose tags. Finally, the proposed tag has been also tested in extreme conditions, applying it directly on Tetra Pak packages containing liquid, with interesting results in terms of platformtolerant features.
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Wang, Silong, Yulong Liu, and Terry Tao Ye. "“Unconventionally Shaped” Antenna Design for UHF RFID Tags." International Journal of Antennas and Propagation 2021 (July 1, 2021): 1–9. http://dx.doi.org/10.1155/2021/9965252.

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UHF RFID tags need to be attached or embedded into various objects. Unlike traditional free-standing antennas, UHF antenna shapes and form factors may vary significantly. There have been no systematic methods that facilitate the design practice of antenna with unconventional shapes. In this paper, using the geometries of 26 English letters (in capital) as examples, we explore the general methodology of shape-specific antenna design. More specifically, we show that 26 letter geometries can be categorized into 9 groups, and the antennas in each group can be divided and conquered into standard baseline geometries. Through prototypes and measurements, we demonstrate that each letter-shaped antenna, although exhibiting different gains and radiations, can achieve satisfactory performance, as compared to standard UHF dipole antennas. Specifically, letters “M” and “J” achieve the longest reading range of more than 20 meters with a good radiation pattern, which is comparable or even better than many commercial UHF RFID tags.
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Merilampi, Sari, Leena Ukkonen, Lauri Sydänheimo, Pekka Ruuskanen, and Markku Kivikoski. "Analysis of Silver Ink Bow-Tie RFID Tag Antennas Printed on Paper Substrates." International Journal of Antennas and Propagation 2007 (2007): 1–9. http://dx.doi.org/10.1155/2007/90762.

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In this study, polymeric silver inks, paper substrates, and screen printing were used to produce prototype Bow-Tie tags. Because of increasing interest in applying passive UHF-RFID systems in paper industry, the Bow-Tie antenna used in this study was designed to work through paper. The maximum reliable read ranges of the tags were measured thorough stacked paper and also in air. The analysis and functioning of the antenna design are also discussed. All inks and paper substrates were suitable as antenna material and the prototype tag antennas had good reading performance. The maximum reliable read ranges were quite the same as for copper and aluminum tags studied elsewhere. This means that printed UHF tags are competitive solutions for the identification of simple mass products.
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Hu, Shengbo, Bing Si, Heng Shu, and Jinrong Mo. "Power Transmission of UHF Passive Embedded RFID in Tires." International Journal of Antennas and Propagation 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/897041.

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UHF passive RFID tags embedded in tires have a deep impact on tire life cycle management and tire monitoring. In this work, we present the power transmission of UHF passive embedded RFID in tires. In UHF passive embedded RFID systems in tires, the bidirectional radio link between reader and tags goes through air and tires. The total path loss contains reflection loss at tire-air boundaries and attenuation loss in the tires. The power transmission is based on the permittivity of tires and tire-air boundary conditions. We give an OCP method for measuring the permittivity of tires. By analyzing the radio link for UHF passive RFID, we establish a model of wave propagation of UHF embedded RFID in tires and make numerical analyses. Numerical analyses show that the error of the OCP methods for measuring the permittivity of tires is small, the parallel polarization and normal incidence of wave are chosen for improving the performance of the UHF embedded RFID in tires, and distance is chosen to keep power transmission function from locating valley.
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Mo, Lingfei, and Chenyang Li. "Double Loop Inductive Feed Patch Antenna Design for Antimetal UHF RFID Tag." International Journal of Antennas and Propagation 2019 (March 21, 2019): 1–8. http://dx.doi.org/10.1155/2019/2917619.

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Planar UHF RFID antimetal tag can be widely used for the metallic products or packages with metal material inside. A double loop inductive feed planar patch antenna is proposed for UHF RFID tag mounted on metallic objects. Compared to conventional microstrip antennas or PIFA antennas used for UHF RFID tags, the double loop inductive feed patch antenna has a planar structure, with no short via or short wall, which could decrease the manufacturing cost of the tags. The double loop inductive feed structure also increases the radiation performance of the planar antenna. Moreover, the double loop inductive feed structure makes the impedance of the patch antenna be tuned easily for conjugate impedance matching.
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Bhogal, Varun, Zornitza Genova Prodanoff, Sanjay P. Ahuja, and Kenneth Martin. "On BFSA Collision Resolution in LF, HF, and UHF RFID Networks." International Journal of Wireless Networks and Broadband Technologies 4, no. 2 (2015): 44–55. http://dx.doi.org/10.4018/ijwnbt.2015040104.

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RFID (radio frequency identification) technology has gained popularity in a number of applications. Decreased cost of hardware components along with wide adoption of international RFID standards have led to the rise of this technology. One of the major factors associated with the implementation of RFID infrastructure is the cost of tags. RFID tags operating in the low frequency spectrum are widely used because they are the least expensive, but have a small implementation range. This paper presents an analysis of RFID performance across low frequency (LF), high frequency (HF), and ultra-high frequency (UHF) environments. The authors' evaluation is theoretical, using a passive-tag BFSA based simulation model that assumes 10 to 1,500 tags per reader and is created with OPNET Modeler 17. Ceteris paribus, the authors' results indicate that total census delay is lowest for UHF tags, while network throughput performance of LF tags is highest for large scale implementations of hundreds of tags in reader's range. A statistical analysis has been conducted on the findings for the three different sets.
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Perret, E., S. Tedjini, and R. S. Nair. "Design of Antennas for UHF RFID Tags." Proceedings of the IEEE 100, no. 7 (2012): 2330–40. http://dx.doi.org/10.1109/jproc.2012.2186950.

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Dissertations / Theses on the topic "UHF Tags"

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Contractor, Bhavik. "Two Dimensional Localization of Passive UHF RFID Tags." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1229465514.

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Kam, ChiWeng. "902-928MHz UHF RFID Tag Antenna Design, Fabrication and Test." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/598.

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Radio Frequency Identification (RFID) uses RF radiation to identify physical objects. With decreasing integrated circuit (IC) cost and size, RFID applications are becoming economically feasible and gaining popularity. Researchers at MIT suggest that RFID tags operating in the 900 MHz band (ultrahigh frequency, UHF) represent the best compromise of cost, read range, and capabilities [1]. Passive RFID tags, which exclude radio transmitters and internal power sources, are popular due to their small size and low cost [1]. This project produced Cal Poly’s first ever on-campus printed, assembled, and operational UHF (902 to 928 MHz) passive RFID tag. Project goals include RFID tag antenna design and simulation using the EMPro electromagnetic (EM) simulation tool [47], establishing the tag fabrication process, and testing, operational verification, and comparisons to commercial tag performance. The tag antenna design goal is to meet or exceed the read range performance of the commercial Sirit tag [23] while minimizing the required tag conductive area. This thesis provides an overview of the UHF passive RFID tag fabrication process. Cal Poly’s Graphic Communication Department Laboratory applied a screen‑printing process to print RFID tag antenna patterns onto plastic (PET) substrates. RFID IC-substrate packages were manually attached to tag antennas with conductive adhesives and functionally verified and compared to commercial tag performance. RFID tag antennas were impedance matched (using EMPro) to the Monza 3 RFID IC to maximize IC to antenna power transfer and RFID tag read range.Tag antenna read range (maximum reader-tag communication distance) was characterized in Cal Poly’s Anechoic Chamber, while RFID tag matching characteristics were measured using the differential probe method [33-41] and compared to simulations. Read range results indicate that one of the designs developed in this thesis outperforms a commercial UHF RFID tag.
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Pour, Sohrab Abed. "UHF RFID tags mountable on metallic and challenging objects." Thesis, University of Liverpool, 2018. http://livrepository.liverpool.ac.uk/3021372/.

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Radio frequency identification (RFID) technology has been developing rapidly during the past years. It has been replacing optical barcodes and has found many applications beyond tagging and tracking objects. Despite their undeniable advantages, passive RFID tags working in the ultra-high frequency (UHF) band are sensitive to the host material and their performance is affected when attached to different materials. Although there are robust tag designs, the fabrication is costly. The motivation of this research is to study the effect of the challenging materials on the tags and find solutions for robust cost-effective designs. Liquid bottles are one of the challenging objects for RFID tags. The study on the equivalent circuit of a typical tag which is basically a dipole antenna shows the liquid increases the loss resistance of the antenna and affects the impedance matching between the antenna and the chip. Two extra arms are added to the antenna in the suggested solution to alleviate the destructive effect of the liquid. The read range of the tag is improved without increasing the size of the design. Study of the detuning effect shows that the capacitances in the antenna are the most sensitive elements. The presented theoretical analysis reveals that less capacitance in the feed point and more capacitance in the dipole arms lead to more robustness of the tag performance to the host material. Based on this finding a low cost 3D tag is designed. The label-type dipole tags offer desirable uniform radiation pattern but are not functional on metallic objects. On the other hand the patch antennas are not efficient on non-metallic objects in terms of read range and radiation pattern. A novel hybrid tag is proposed which has the advantage of both types of antenna. The simple groundless design works in two modes. It acts as a dipole antenna in off-metal mode and a patch antenna in on-metal mode. The measurement result shows an outstanding performance on different materials. Protecting the antenna from metallic background using an artificial ground plane composed of periodic structures is a practiced method. Mushroom unit cell is the most common structure used as artificial ground but the need for via increases the fabrication cost. It is shown that the fabrication cost can be reduced by eliminating the via and having a uni-planar structure. There has been many works in the literature proposing tag designs robust to the host material but what makes this works distinct from the previous works is in depth study on the effect of the challenging material on the performance of the tag antenna and identifying the main reason of the read range degradation for the first time. The findings of this study can be used for designing cost effective tags with improved read range. Analysis of the different parts of the tag antenna and their sensitivity to the host material is also performed for the first time in this thesis. The result of this study shows how the shape of the tag can determine the robustness to the host material. In addition to novel tag designs proposed in this thesis, a straightforward strategy for designing optimum tags is also introduced. This novel method helps the tag designers to modify the primary design step by step and reach the optimum result in a short time.
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Abdelmalek, Omar. "Conception et prototypage d'architectures robustes de tags RFID UHF." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT088/document.

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Les systèmes RFID sont de plus en plus utilisés dans des applications critiques fonctionnant dans des environnements perturbés (ferroviaire, aéronautique, chaînes de production ou agroalimentaire) ou dans des applications où la sécurité est essentielle (identification, lutte contre la contrefaçon). Pourtant, ces systèmes faibles coûts, initialement conçus pour des applications de masse non critiques, sont peu robustes par nature. Pour les applications critiques, les défaillances des puces RFID peuvent avoir des conséquences catastrophiques ou créer des failles de sécurité importantes. Ces défaillances peuvent avoir des origines nombreuses : par exemple, des origines matérielles dues au vieillissement naturel des circuits intégrés ou à des attaques (optiques, électromagnétiques, en tension). Il est donc d'usage dans les applications critiques d'accroître la robustesse des systèmes RFID par la mise en œuvre de redondance matérielle. Cependant cette redondance accroît le coût du déploiement des systèmes RFID ainsi que la complexité des protocoles et middleware associés. L'amélioration de la robustesse des tags permet de grandement limiter cette redondance. L'objectif de la thèse est d'accroitre la robustesse des tags UHF passifs en proposant et validant de nouvelles architectures numériques de puces RFID robustes à la fois aux défaillances et aux attaques matérielles. Les approches de durcissement des circuits intégrés étudient généralement leur robustesse par simulation et ce de manière indépendante à la validation de leur conception. La méthode la plus courante afin de valider la robustesse d'un circuit repose sur l'injection de fautes par simulation. Pour les puces RFID, ce type d'approche par simulation est problématique car les performances des puces dépendent de nombreux paramètres difficilement modélisables globalement. En effet, le fonctionnement d'un tag dépend de son environnement électromagnétique, du nombre de tags présents dans le système, des protocoles mis en œuvre. Aussi, nous avons développé une méthodologie basée sur le prototypage permettant d'éviter des simulations complexes et chronophages. La puce RFID prototype est alors implantée dans un FPGA. Ainsi, dès la phase de conception, cette puce peut être validée fonctionnellement dans un environnement réel. De plus, en utilisant différentes techniques d'instrumentation permettant l'injection de fautes dans les circuits numériques sur FPGA, il est alors possible d'analyser l'effet sur l'ensemble du système des fautes injectées dans le tag. Dans cette thèse, dans un premier temps, le prototype fonctionnel d'un tag RFID a été développé. Dans un second temps, ce prototype a été instrumenté pour pouvoir réaliser des injections de fautes en ligne ou hors ligne. Ensuite, le comportement du système RFID en présence de fautes dans ce tag RFID a été évalué. L'analyse des effets de ces fautes sur le système a permis de proposer, de mettre en œuvre et de valider de nouvelles architectures numériques de tags RFID robustes. Ce nouvel environnement de prototypage et d'injection de fautes a également permis de démontrer les effets de nouvelles attaques contre les systèmes RFID reposant sur l'insertion de tags fautifs ou malveillants dans les systèmes. Enfin, cette approche a permis d'évaluer les méthodes de détection des tags fautifs<br>RFID tags are more and more used for critical applications within harsh environments (aeronautics, railways) or for secure applications such as identification, countermeasure against counterfeiting. However, such low cost systems, initially designed for non-critical applications with a high volume, are not robust by themselves. For critical applications, a malfunction of RFID chip may have serious consequences or induce a severe security breach for hackers. Dysfunctions can have many origins: for instance, hardware issues can be due to aging effects or can also be due to hackers attack such as optical or electromagnetic fault injection. It is thus a common practice for critical applications to increase the robustness of RFID system. The main purpose of this PhD Thesis is to increase UHF tags robustness by proposing new digital architectures of RFID chips which would be resilient against both hardware attacks and natural defects.Usual design techniques for robustness IC improvement consist in evaluating the design robustness by simulation and to do this independently of the design validation. The main technique for robustness evaluation is the simulation based faults injection. Within the RFID context such an approach only based on simulation has several drawbacks. In fact, simulations often are inaccurate because the system behavior relies on several parameters such as the global electromagnetic environment, the number of tags present in the reader field, the RFID protocol parameters.The purposes of this PhD are to develop a design method dedicated to RFID system based on hardware prototyping in order to avoid time consuming simulations and then to evaluate the design within a real environment.The hardware prototyping based on FPGA allows the design to be validated in a real environment. Moreover, using instrumentation techniques for fault injection within FPGA , it will be then possible to analyze the effects of faulty tags on the global system in terms of safety and security and then to propose countermeasures.In this thesis an FPGA based emulation platform called RFIM has been developed. This platform is compliant to EPC C1 Gen2 RFID standard. The RFID tag emulator has been validated functionally in a real environment. The RFIM platform uses the instrumentation technique for injecting faults in the digital tag circuit. Through fault injection campaigns RFIM platform can analyze the effect on the entire system of the faults injected into the tag, and ten validate new robust digital architectures.The RFIM platform has been used to demonstrate the effects of further attacks against RFID systems based on the insertion of faulty or malicious tag that contains a hardware Trojan. Finally, RFIM platform helps to develop countermeasures against the fault effects. These countermeasures have been implemented and tested in a real RFID environment with several tags and reader
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Sajal, Sayeed Zebaul Haque. "Low-Cost Passive UHF RFID Tags on Paper Substrates." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/27426.

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To reduce the significant cost in the widespread deployment of UHF radio frequency identification (RFID) systems, an UHF RFID tag design is presented on paper substrates. The design is based on meander-line miniaturization techniques and open complementary split ring resonator (OCSRR) elements that reduce required conducting materials by 30%. Another passive UHF RFID tag is designed to sense the moisture based on the antenna's polarization. An inexpensive paper substrate and copper layer are used for flexibility and low-cost. The key characteristic of this design is the sensitivity of the antenna's polarization on the passive RFID tag to the moisture content in the paper substrate. In simulations, the antenna is circularly-polarized when the substrate is dry (?r = 2.38) and is linearly-polarized when the substrate is wet (?r = 35.35). It was shown that the expected read-ranges and desired performance could be achieved reducing the over-all cost of the both designs.
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Gao, Jinlan. "Antenna-based passive UHF RFID sensor tags : Design and application." Doctoral thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-19889.

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RFID, as a low cost technology with a long life time, provides great potential for transmitting sensor data in combination with the ordinary ID number. The sensor can, for example, be integrated either in the chip or in the antenna of an RFID tag.This thesis focuses on the design of antenna-based UHF RFID sensor tags as wireless sensors at the lowest possible cost level compatible with standard communication systems in logistics. The applications of the sensor tags, in this work, mainly target remote humidity sensing. Antenna-based sensory UHF RFID tags utilize the influence that the physical or chemical parameters to be sensed have on the electrical properties of a tag antenna. The variations of the electrical properties of the tag antenna can be measured in many ways. In the thesis, a description is provided as to how these variations are normally measured by an RFID reader without any other assistant equipment. Three structures of antenna-based RFID sensor tags are presented with detailed characterizations. The first one utilizes the sensitivity of the antenna to the surrounding environment to construct RFID sensor tags, where a moisture absorbing layer providing wetness/humidity sensor functionality is placed on the RFID tag antenna to increase the humidity concentration surrounding the tag antenna and the thesis describes how to overcome certain limitations due to disturbances associated with background materials. The second structure directly integrates a small resistive sensor element into an RFID tag antenna and the sensor information can thus modulate the antenna performance by means of galvanic contact. The third structure embeds a small resistive sensor element into a loop which is positioned on top of the tag antenna and the sensor information can thus modulate the performance of the tag antenna by means of electromagnetic coupling. Both theoretical analysis and fullwave simulations are presented for the latter two sensor tag structures in order to characterize the performance of the sensor tags. An ultra-low cost printed humidity sensor with memory functionality is also designed and thoroughly characterized for integration into RFID tag antennas by means of galvanic contact or electromagnetic coupling. The sensor is a 1-bit write-once-read-many (WORM) memory printed using conductive ink. The WORM works as a pure resistive humidity sensor and can provide information about an historical event. The WORM sensor is presented by introducing its geometry, characterizingits behavior in humidity and explaining the principle of the humidity effect. The WORM sensors are also integrated into the RFID tags by means of both galvanic contact and electromagnetic coupling in order to experimentally verify the two concepts. To lower the cost of the RFID tags, the antennas are normally printed, milledor etched on flexible substrates using low-cost high-speed manufacturing methods which in some cases cause a high degree of edge roughness. The edge roughness will affect the behavior of the antenna, however, the characteristics of edge roughness on RFID antennas have previously not received any significant attention. Unforeseen antenna behavior can affect the antenna-based sensor tags, thus the influence of edge roughness is also investigated in the thesis.
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Oyeka, Dumtoochukwu Obiora. "Digitally fabricated epidermal transfer tattoo UHF radio frequency identification tags." Thesis, University of Kent, 2015. https://kar.kent.ac.uk/56651/.

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This thesis focuses on the inkjet printing of UHF RFID tags in the form of transfer tattoos for use on the skin. Inkjet printing of these tags is proposed as a cheaper and more appropriate alternative to conventional etching. The work seeks to assesses the performance of inkjet printed epidermal RFID tags using parameters such as read range, transmitted power and backscattered power. The effect of different printing parameters such as the number of conductive ink layers, sintering time and temperature on the performance of the tags are assessed by simulation and measurement. Additionally, techniques to reduce the volume of conductive ink used for the fabrication of the tag are also examined and compared with an aim to determine which has the best achieved read range and ink utilization balance. This would help to reduce the cost of fabrication of the tags. Also, due to some defects being introduced to the tags during the printing process because of printing conditions and characteristics inherent to the printing technology, the effects of these defects on the performance of the printed tag is also examined by simulation and measurement. The robustness of the epidermal transfer tattoo tag was further experimentally determined by exposure to everyday use conditions and situations involving sweat and mechanical friction. Finally, a diversity study on an inkjet printed tag integrated with a medical sticking plaster was performed. This involved the use of two to four tags placed horizontally and vertically in order to determine which orientation offers better read coverage in each of the diversity setups while a volunteer carried out a set of motions.
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Saba, Rita. "Caractérisation et conception de tags RFID-UHF dédiés aux produits textiles." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4783.

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Cette thèse s’inscrit dans le cadre d’une collaboration entre l’IM2NP et la société Tagsys, dans le cadre du projet PACID-TEXTILE. L'objectif de la thèse est de créer un tag RFID UHF packagé, très robuste et qui puisse facilement s’intégrer de manière discrète dans les produits textiles. L’idée est de concevoir deux antennes couplées et adaptées aux puces choisies pour l’application. Ces deux antennes sont conçues afin de favoriser le couplage entre elles. La première entité est packagée afin de protéger la puce de l’environnement d’utilisation. Dans une première partie, l’antenne primaire est caractérisée. Le packaging fait l’objet d’études particulières pour répondre aux contraintes de robustesses liées aux domaines du textile (blanchisserie, produit chimique). Une seconde partie du travail vise à caractériser le fil conducteur de manière à en établir une modélisation la plus fidèle possible pour pouvoir être utilisé par les outils de simulation et de conception d’antennes. Des essais de résistances du fil sont également réalisés.Enfin, une troisième partie traite de la conception d'antennes. Les tags conçus doivent avoir une portée minimale de 4m, résister à la déformation et à l'empilement. Ces tags sont soumis à différents tests pour établir leurs performances. A l’aide des moyens de caractérisations disponible au laboratoire IM2NP (plate forme de pré certification RFID), un « Benchmarking » est réalisé sur les différents tags en vue de proposer une étiquette répondant au mieux aux exigences du cahier des charges<br>This thesis is part of a collaboration between the company Tagsys and IM2NP, under the PACID-TEXTILE project. The aim of the thesis is to create a robust UHF RFID tag antenna that can be easily and discreetly integrated into textile products.The idea is to design two antennas electromagnetically coupled and adapted for selected chips. Both antennas are designed to facilitate the coupling between them. The first antenna is packaged in a robust material in order to protect the chip from laundry cycles. The second antenna is made up by electro-thread. The first part of the work is to characterize the packaged antenna and packaging material. The second part is to measure the conductivity of the used thread, to establish the most accurate model possible. Tests of wire resistance are also made. Toughness of each wire is also tested.The third part deals with the antenna design. The tags are designed to have a minimum range of 4m. They have to resist deformation and stacking. These tags are subjected to various tests to determine their performance. Using resources available in the laboratory IM2NP (RFID platform), a "Benchmarking " is carried on different tags to find the best that meet the requirements of the specifications
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Miranda, Hugo Manuel Oliveira de. "Sistemas RFID UHF." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/16273.

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Mestrado em Engenharia Eletrónica e Telecomunicações<br>O interesse por sistemas de identificação por radiofrequência (RFID) tem aumentado de forma significativa nos últimos anos, principalmente na identificação e tracking de objectos, animais e pessoas através de um modo de comunicação sem fios. Esta comunicação é feita por ondas de rádio que são transmitidas por um leitor, através de uma antena a um identificador (etiqueta) que atribui a um objeto uma identidade única, o chamado código de identificação único. Esta tecnologia não só identifica, mas também armazena dados atribuídos a determinado objeto, animal ou pessoa. No entanto, o RFID apresenta ainda consideráveis limitações, que inviabilizam o seu uso. Duas importantes razões que tornam esta tecnologia menos interessante _e o seu excessivo custo, causado não só pelos preços dos leitores e das antenas, mas também pelo preço do processo de fabrico das etiquetas; e devido ao facto de serem usados leitores não-reconfiguráveis a novos protocolos de comunicação, novas etiquetas ou até mesmo alterações de frequências. O primeiro objetivo deste projeto foi então desenvolver um front end de radiofrequência para a construção de um leitor RFID UHF reconfigurável de baixo custo, baseado em circuitos programáveis DSP ou FPGA, com um processador embutido e software-defined radio. Com isto pretende-se que os leitores RFID não dependam de transceivers RFID comerciais. Além disso, com este estudo pretendeu-se também a desenvolver antenas e etiquetas RFID, em material orgânico flexível, com um processo de produção de etiquetas simples e de baixo custo. Na primeira parte deste projeto, foi proposto um front end para a banda RFID UHF Europeia e para a banda Americana, que poderá ser usado, no futuro, no desenvolvimento de um leitor RFID. Este front end foi desenhado para ser robusto, de baixo custo, e com o objetivo de emitir e receber sinais de rádio. Na segunda parte, foram desenvolvidas duas antenas para leitores, uma para a banda RFID UHF Americana e outra para a banda RFID UHF Europeia. Por _ultimo, foi alterada uma impressora convencional, comercialmente disponível, e foram feitas também alterações na tinta de impressão, tornando-a condutora, para impressão de antenas para etiquetas RFID em substratos _a base de papel. Todos os parâmetros fundamentais das antenas foram simulados numericamente e testados experimentalmente. As duas antenas testadas mostraram boas performances, em particular, a antena para a banda RFID UHF Europeia, cujos valores resultantes dos testes experimentais foram muitos similares aos encontrados computacionalmente, sendo mesmo melhores para alguns parâmetros. Esta antena, não só apresentou uma boa performance na banda mencionada, mas também na banda RFID UHF Americana. Foram desenvolvidas sete etiquetas RFID, ou seja, desenhadas e impressas usando a impressora jato de tinta modificada, e testadas posteriormente. Todas as etiquetas funcionaram, embora uma delas não tenha apresentado resultados tão satisfatórios. Podemos então concluir que a nossa tecnologia permitiu ter etiquetas impressas por uma impressora convencional e, desta forma, poderá oferecer uma maior independência ás empresas que as produzem, podendo mesmo ser utilizada em ambientes de I&D, em Universidades ou Escolas, de modo simples e barato.<br>In recent years, Radio Frequency IDentification (RFID) technology has received special attention, especially for identifying and tracking objects, animals and people through a wireless communication connection. Radio waves transmitted from a reader, through an antenna to an identifier, called tag, which attributes an Unique Identification Number (UID) to a object, animal or person are used for this communication. This technology not only helps to identify, but also to collect data attributes about a certain person or object. However, RFID still has important limitations, which slows down its growth considerably. The two main reasons for that are related not only with the excessive cost of this system due to the readers and antennas, but also because it uses non-reconfigurable readers to new communication protocols, tags or even changes in frequencies. Therefore, the first purpose of this project was to develop a front-end to be included into a low-cost reconfigurable RFID UHF reader, based on FPGA or DSP, with an embedded processor and a software-defined radio. In a long-term, it is intended to have readers that does not require commercial RFID transceivers. The second purpose of this study was to develop a simple and low-cost manufacturing process of antennas and tags in exible and organic material. Firstly, a front end for RFID UHF bandwidth across the European Union and in the North America was proposed to be implemented in the future. This front end was designed to be low-cost, robust, in order to emit and receive radio signals. Secondly, two antennas, respectively, for an American and European UHF bandwidth RFID reader were developed in this project. Ultimately, an ordinary home inkjet-printer was modified to jet conductive ink, created as a part of this study, to print tag antennas in paper based substrate. All of the fundamental parameters that needed to be evaluated for antennas were experimentally simulated and tested for the two antennas. Both showed high performances, particularly, the antenna for a European UHF bandwidth RFID reader. This antenna obtained results more similar to the numerical model, and experimental findings were even better for some parameters. Its performance was found to be high even for an American UHF bandwidth RFID reader. Furthermore, seven RFID tags were developed, meaning they were designed and printed on the modified home inkjet-printer, and then its performance was tested. Although one of these tags showed not to be highly efficient, all tags worked adequately for the purpose. Therefore, we can conclude that our technology allowed to print RFID tags using a modified home inkjet-printer, indicating that this method can offer more independency to RFID tag manufacturers and, also allow an extensive use of this system in I&D environment, University or Schools, since it is simple and cheap.
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Quiroz, Moreno Rafael Antonio. "Solutions novatrices pour l'amélioration du taux de lecture de tags RFID UHF dans des environnements complexes." Thesis, Paris Est, 2014. http://www.theses.fr/2014PEST1037/document.

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L'identification par radio fréquence (RFID) est une technologie utilisant les ondes radio pour détecter, localiser et identifier des objets sur lesquels on place des étiquettes électroniques ou tags. Cette technologie, avec des fonctionnalités de détection supérieures à 2m, est destinée à remplacer le code-barre existant depuis les années 1970. Durant la dernière décennie, le développement de la RFID UHF a permis d'élargir le domaine des applications qui compte entre autres le marquage d'objets, le contrôle d'accès, la traçabilité, la logistique, l'inventaire, et même les transactions financières. Avec cette augmentation de la demande de services d'identification, les prévisions pour le marché de la RFID (actuellement dans les 12MM d'euros) montrent une augmentation de 3MM d'euros par an dans les 10 prochaines années. Actuellement la RFID UHF présente plusieurs limitations technologiques fortes expliquant que son développement est moins rapide que ce qui avait été envisagé il y a une vingtaine d'années. Deux problématiques industrielles importantes sont abordées dans ce travail. Tout d'abord la variété des supports sur lesquels les étiquettes RFID sont placées, cette variabilité des supports entraînant un déréglage des antennes des tags à cause du changement de la permittivité électrique et/ou de la conductivité du milieu. Dans ce contexte des solutions sont proposées au niveau de tags UHF pour une application sur surfaces en plastique ou en métal. La deuxième problématique est liée au couplage entre antennes lorsque la densité de tags est forte ou aux perturbations de diagramme (masquage) dues à l'environnement proche des antennes. Afin d'améliorer le taux de lecture dans ces conditions, une antenne lecteur miniaturisée à quatre IFAs intégrant de la diversité d'espace, de polarisation et de diagramme a été développée et testée dans un scénario à forte densité de tags<br>Radio Frequency Identification (RFID) is a technology designed to use the electromagnetic waves backscattering to establish detection and identification for different types of articles. Due to its longer coverage range, this technology seeks to replace the bars code existing since 1970. Recently RFID developments allow the growth in the number of applications including access control, tracking and logistic, inventory, and even electronic contactless payment between others. With this growing in the RFID services demand, the market value previsions (currently in 12MM euros) show an increase of 3MM euros per year during the next 10 years. Nowadays the RFID has many technical limitations that could explain the fact of the slow growth different of the initial estimation twenty years ago. Two main issues in RFID field are treated in this work. Initially, the variety of supports where the tags are placed on, fact that produce an antenna mismatch due to the electrical permittivity variation. For this problem some UHF tags solutions are developed and proposed to enhance the antennas performance for plastic and metallic supports applications. The second issue which is the low detection rate is clearly linked to the antennas coupling when the tags density is high or to the perturbations in the reader's radiation pattern due to the environment next to the antenna. In order to improve the detection-identification rate in these conditions, a four IFA miniaturized reader antenna with diversity is developed and tested
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Books on the topic "UHF Tags"

1

Sangyōshō, Japan Keizai. UHF-tai denshi tagu shisutemu no kōdo ri-katsuyō fukyū sokushin ni kansuru chōsa kenkyū hōkokusho: Heisei 17-nendo Keizai Sangyōshō itaku jigyō. Nihon Jidō Ninshiki Shisutemu Kyōkai, 2006.

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Sangyōshō, Japan Keizai. Heisei 18-nendo waga kuni no IT ri-katsuyō chōsa oyobi IT kiso gijutsu ni kansuru kenkyū jigyō (UHF-tai denshi tagu no dōnyū hyōka, unʼyō hōhō ni kansuru chōsa kenkyū) .: UHF-tai denshi tagu shisutemu no sōgo kanshō tokusei haaku oyobi unʼyō hōhō no kentō hōkokusho : Heisei 18-nendo Keizai Sangyōshō itaku jigyō. Mizuho Jōhō Sōken Kabushiki Kaisha, 2007.

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Seisakujo, Hitachi, and Japan Keizai Sangyōshō, eds. Heisei 18-nendo enerugī shiyō gōrika denshi tagu shisutemu kaihatsutsu chōsa jigyō (UHF-tai denshi tagu no gijutsu no kaihatsu jigyō) hōkokusho. Hitachi Seisakujo, 2007.

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Seisakujo, Hitachi, and Japan Keizai Sangyōshō, eds. Heisei 17-nendo enerugī shiyō gōrika denshi tagu shisutemu kaihatsutsu chōsa jigyō (UHF taidenshi tagu no seizō gijutsu oyobi jissō gijutsu no kaihatsu) hōkokusho. Hitachi Seisakujo, 2006.

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Sangyōshō, Japan Keizai, та Mizuho Jōhō Sōken Kabushiki Kaisha., ред. Heisei 18-nendo waga kuni no IT rikatsuyō chōsa oyobi IT kiso gijutsu ni kansuru kenkyū jigyō (UHF-tai denshi tagu no dōnyū hyōka, unʼyō hōhō ni kansuru chōsa kenkyū) .: UHF-tai denshi tagu shisutemu no sōgo kanshō tokusei haaku oyobi unʼyō hōhō no kentō hōkokusho : Heisei 18-nendo Keizai Sangyōshō itaku jigyō. Mizuho Jōhō Sōken Kabushiki Kaisha, 2007.

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Book chapters on the topic "UHF Tags"

1

Laheurte, Jean-Marc, Christian Ripoll, Dominique Paret, and Christophe Loussert. "Design of UHF RFID Tags." In UHF RFID Technologies for Identification and Traceability. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118930939.ch2.

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Perret, Etienne. "Antenna Design for UHF RFID Tags." In Radio Frequency Identification and Sensors. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781119054016.ch2.

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Zuffanelli, Simone. "UHF-RFID Tags for Optical Discs." In Antenna Design Solutions for RFID Tags Based on Metamaterial-Inspired Resonators and Other Resonant Structures. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62030-5_4.

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Ukkonen, Leena, and Lauri Sydänheimo. "Performance Characterization of Passive UHF RFID Tags." In The Internet of Things. Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-1674-7_22.

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Hu, Lei, Zhen Huang, and Bowen Chen. "Methods to Recognize Special Tags in UHF RFID System." In Internet of Things. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32427-7_37.

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Canard, Sébastien, Loïc Ferreira, and Matt Robshaw. "Improved (and Practical) Public-Key Authentication for UHF RFID Tags." In Smart Card Research and Advanced Applications. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37288-9_4.

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De Blasi, M., V. Mighali, L. Patrono, and M. L. Stefanizzi. "Performance Evaluation of UHF RFID Tags in the Pharmaceutical Supply Chain." In The Internet of Things. Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-1674-7_27.

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Berenguer, Roc, Iván Rebollo, Ibon Zalbide, and Iñaki Fernández. "Battery-less Wireless Sensors Based on Low Power UHF RFID Tags." In Wirelessly Powered Sensor Networks and Computational RFID. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-6166-2_5.

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Park, Sangdo, Taeho Kim, and Hongchul Lee. "Improving Position Estimation Accuracy of Mobile Robot by Using UHF Passive RFID Tags." In Convergence and Hybrid Information Technology. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-24082-9_66.

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Zuffanelli, Simone. "A High-Gain Passive UHF-RFID Tag with Increased Read Range." In Antenna Design Solutions for RFID Tags Based on Metamaterial-Inspired Resonators and Other Resonant Structures. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62030-5_5.

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Conference papers on the topic "UHF Tags"

1

Yi, Zhou, Zi Qin Phua, Vitor N. B. Rangel, and Johné M. Parker. "Experimental Investigation on Tags Placement Affecting the Efficient Encoding of Multiple Passive UHF RFID Tags With Unique Identifiers." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-67472.

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Recently, the Internet of things (IoT) has emerged as a promising solution for several industrial applications. One of the key components in IoT is passive radio frequency identification (RFID) tags which do not require a power source for operations. Specifically, ultra-high frequency (UHF) tags are studied in this paper. However, due to factors such as tag-to-tag interference and inaccurate localization, RFID tags that are closely spaced together are difficult to detect and program accurately with unique identifiers. This paper investigates several factors that affect the ability to encode a specific tag with unique information in the presence of other tags, such as reader power level, tag-to-antenna distance, tag-to-tag distance and tag orientation. ANOVA results report reader power level and tag spacing, along with effect interactions power level*tag space and tag space*tag orientation to be significant at the levels investigated. Results further suggest a preliminary minimum tag-to-tag spacing which enables the maximum number of tagged items to be uniquely encoded without interference. This finding can significantly speed up the process of field programming in item-level tagging.
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Rao, K. V. S., Sander F. Lam, and Pavel V. Nikitin. "Low profile rigid UHF RFID tags." In 2012 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting. IEEE, 2012. http://dx.doi.org/10.1109/aps.2012.6349345.

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Koski, Eveliina, Karoliina Koski, Toni Bjorninen, et al. "Fabrication of embroidered UHF RFID tags." In 2012 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting. IEEE, 2012. http://dx.doi.org/10.1109/aps.2012.6349381.

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Andia-Vera, G., Y. Duroc, and S. Tedjini. "Toward augmented UHF RFID passive tags." In 2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC). IEEE, 2015. http://dx.doi.org/10.1109/ursi-at-rasc.2015.7303025.

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Protat, Stephane, and Jean Marc Laheurte. "UHF RFID Tags for electrical cables." In 2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC). IEEE, 2015. http://dx.doi.org/10.1109/ursi-at-rasc.2015.7303027.

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Huan-Yang Chen, Atul Bhadkamkar, and Daniel W. van der Weide. "Coupling sensors to UHF RFID tags." In 2009 IEEE MTT-S International Microwave Workshop on Wireless Sensing, Local Positioning, and RFID (IMWS). IEEE, 2009. http://dx.doi.org/10.1109/imws2.2009.5307883.

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Liu, Xinwei, Yan Sun, and Jie Liu. "Security Analysis for UHF RFID Tags." In 2014 Tenth International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP). IEEE, 2014. http://dx.doi.org/10.1109/iih-msp.2014.196.

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Lum, Kassy M., Donnie Proffitt, Ann Whitney, and Johné M. Parker. "Experimental Investigation and Numerical Optimization of Key Factors Affecting the Programming Efficacy of Passive UHF RFID Tags." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65265.

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Radio Frequency Identification (RFID) is a disruptive technology that uses radio waves to uniquely identify objects. As such, it has the potential to bring significant benefits to numerous government and private sector initiatives. However, significant technical challenges remain. A key area of study is in system performance: while the major hardware components in an RFID system (i.e., tags, readers and middleware) have been and continue to be studied extensively, there has been little research, comparatively, in characterizing RFID system performance. The research presented in this paper was inspired, in part, by a laser printer RFID solution; i.e., one in which the printer simultaneously prints and programs ultra-high frequency (UHF) tags embedded in print media. In this paper, we have conducted a detailed experimental investigation of the primary factors influencing the performance of RFID systems similar to the print solution. This study aims to provide a systematic experimental process for investigating key factors — e.g., the air gap between reader antenna and tag, in-plane orientation of the tag with respect to the reader antenna, and power level output of the reader — which affect the programmability of UHF RFID tags. Results provide a baseline evaluation of the functionality of RFID systems of similar designs and provide a basis for a detailed exploration of the primary factors which affect RFID UHF passive tag dynamic programming capabilities. By understanding which factors significantly affect the readability and programming of RFID tags, this research suggests optimal designs for system functionality and provides data needed in order to advance such designs. Additionally, a key obstacle for RFID implementation is tag selection. Effectively matching tags to applications requires numerous economic and technical considerations; these considerations generate different implementation constraints. This paper lays the foundation for a multi-objective optimization algorithm to help determine optimal tag selection for a given application, based upon tag performance and cost.
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Ibrahiem, A., Tan-Phu Vuong, A. Ghiotto, and S. Tedjini. "New design antenna for RFID UHF tags." In 2006 IEEE Antennas and Propagation Society International Symposium. IEEE, 2006. http://dx.doi.org/10.1109/aps.2006.1710797.

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Borisov, D. N., and S. A. Zuev. "Modeling microstrip antennas for UHF RFID tags." In 2017 XI International Conference on Antenna Theory and Techniques (ICATT). IEEE, 2017. http://dx.doi.org/10.1109/icatt.2017.7972637.

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