{"title":"A humidity sensor for passive chipless RFID applications","authors":"R. Nair, E. Perret, S. Tedjini, Thierry Barron","doi":"10.1109/RFID-TA.2012.6404534","DOIUrl":"https://doi.org/10.1109/RFID-TA.2012.6404534","url":null,"abstract":"This paper proposes for the first time, a group delay based humidity sensor for chipless RFID applications. The sensor network consists of cascaded group of microstrip transmission line sections coupled at alternative ends. Silicon nanowires are deposited on the transmission line sections. The nanowires are extremely sensitive to humidity variations, which make it a good candidate for sensor applications. The sensor shows a very good sensitivity to humidity in phase and group delay at a bandwidth of 750 MHz from the fundamental frequency and a very good reversibility is also achieved. The variation of phase and group delay in accordance with the humidity absorption is explained for a single group of C-sections. A proof of concept is developed for the prototype and is validated using measurement results. Moreover, measurement for a temperature variation of ±10°C was also performed and no significant variation was observed. The obtained results confirm the robustness of these kinds of tags in humidity sensor application.","PeriodicalId":232862,"journal":{"name":"2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133121258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bistatic backscatter radio for tag read-range extension","authors":"J. Kimionis, A. Bletsas, J. Sahalos","doi":"10.1109/RFID-TA.2012.6404546","DOIUrl":"https://doi.org/10.1109/RFID-TA.2012.6404546","url":null,"abstract":"This work examines the idea of dislocating the carrier transmission from the tag-modulated carrier reception, i.e. bi-static rather than mono-static backscatter radio. In that way, more than one carrier transmitters can be distributed in a given geographical area and illuminate a set of RF tags/sensors that modulate and scatter the received carrier towards a single software-defined receiver. The increased number of carrier transmitters and their distributed nature assists tags to be potentially located closer to one carrier transmitter and thus, improves the power of the scattered signals towards the receiver. Specifically, this work a) carefully derives near-optimal detectors for bi-static backscatter radio and on/off keying (OOK) tag modulation (which is widely used in commercial tags), b) analytically calculates their bit error rate (BER) performance, and c) experimentally tests them in practice with a custom bistatic backscatter radio link. As a collateral dividend, it is shown that the non-linear processing of the proposed receivers requires certain attention on the utilized tag design principles, commonly overlooked in the literature, validating recently reported theoretical results on the microwave domain.","PeriodicalId":232862,"journal":{"name":"2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124514077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mutual coupling modeling of NFC antennas by using open-source CAD/FEM tools","authors":"Ulrich Muehlmann, M. Gebhart, Markus Wobak","doi":"10.1109/RFID-TA.2012.6404553","DOIUrl":"https://doi.org/10.1109/RFID-TA.2012.6404553","url":null,"abstract":"Near Field Communication (NFC) antennas are not comparable to standard communication antennas used for traditional transmission services. The geometries are complex, narrow conductor cross-sections and long loops located close to materials sensitive to electromagnetic interaction, when integrated, make the application of analytical coupling formulations inapplicable, even when it comes down to non-linear relations forced by ferrite shielding. Commercial finite element (FEM) solvers are powerful, but they do not serve the needs of NFC applications due to complexity, inadequateness and code obscuration. An intensive open source code investigation has identified one alternative solver which is capable to deal with all NFC RFID related coupling effects one can imagine. Automated scripts, the tool-chain, and geometry macros have been developed for rapid prototyping of such. Amongst other open source tools listed, the ElmerFEM solver is the most promising solver for linear and non-linear quasi-static electro-magnetic (EM) NFC problems. The solver has a powerful interface and delivers results close to reality even when computational complexity is a trade of physical resolution and memory capacity of standard commercial workstations.","PeriodicalId":232862,"journal":{"name":"2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120913252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Prototyping flexible UHF RFID tags through rapid and effective unconventional techniques: Validation on label-type sensor-tag","authors":"L. Catarinucci, R. Colella, L. Tarricone","doi":"10.1109/RFID-TA.2012.6404506","DOIUrl":"https://doi.org/10.1109/RFID-TA.2012.6404506","url":null,"abstract":"As a matter of fact, electromagnetic labs involved in label-type UHF RFID tags design, realize their tag prototypes making use of either very rudimentary methods, by shaping the tag antenna on a copper film through a handy cutter, or photolithography methods based on rigid PCB, which give out non-flexible devices. In this work two innovative prototyping techniques suitable for built-in-lab flexible tags are presented. The former method is mainly based on the use of a cutting plotter to precisely shape the tag antenna on adhesive copper tapes. The latter makes jointly use of flexible PCBs and solid ink printers. Once introduced and discussed, the new prototyping methods have been electromagnetically characterized and results have been compared with the canonical photolithography. At the end of the paper, the very challenging test-case of the practical realization of a flexible Sensor-Tag is presented. The measured and shown performance confirms the appropriateness of the proposed prototyping techniques even for complex RFID-based structures.","PeriodicalId":232862,"journal":{"name":"2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)","volume":"3 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121006618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Schottky diode rectifier for power harvesting application","authors":"Yuwei Zhou, B. Froppier, T. Razban","doi":"10.1109/RFID-TA.2012.6404561","DOIUrl":"https://doi.org/10.1109/RFID-TA.2012.6404561","url":null,"abstract":"This paper presents a study of rectifier prototype and diode modelization. The rectifying circuit with single Schottky diode HSMS-2860 at 2.45 GHz is proposed for energy harvesting applications. In such applications, the input power is very low, mainly about -20 dBm. Based on an analysis of matching circuit, the rectifiers with single stub matching circuit, with radial stubs low pass filter, or with compact structure were designed by using circuit simulation and co-simulation in ADS. The output DC voltages of 36.2 mV and the conversion efficiency of 1.3% were measured over a load resistance of 10 kΩ for -20 dBm microwave incident power.","PeriodicalId":232862,"journal":{"name":"2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127184977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. D. Prete, D. Masotti, N. Arbizzani, A. Costanzo
{"title":"A flag-shaped printed dipole array for ambient scanning","authors":"M. D. Prete, D. Masotti, N. Arbizzani, A. Costanzo","doi":"10.1109/RFID-TA.2012.6404521","DOIUrl":"https://doi.org/10.1109/RFID-TA.2012.6404521","url":null,"abstract":"The design and performances of a low-cost light-weight two-element array in printed circuit technology is presented. The array far-field is designed in such a way to be suitably adopted by “smart” RFID readers, which do not limit themselves to collect IDs only. On the contrary they are capable to interact with tagged objects, even hidden, widely distributed in physical ambient, and to exchange data with them. For this purpose the array implements the RADAR-Monopulse technology coupled with beam steering capabilities which allow the reader to track the signal direction of a specific tag, located in close proximity to others, and selectively interact with it. The design is developed to operate in the 2.45-GHz band but it is frequency-scalable: the higher the operating frequency the closer can be the tags to be successfully selected or detected.","PeriodicalId":232862,"journal":{"name":"2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127299243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Maximising the efficiency of logistics operations with radio frequency identification technology","authors":"M. Lim, Michael Winsper","doi":"10.1109/RFID-TA.2012.6404529","DOIUrl":"https://doi.org/10.1109/RFID-TA.2012.6404529","url":null,"abstract":"Radio frequency identification (RFID) technology has gained increasing popularity in businesses to improve operational efficiency and maximise costs saving. However, there is a gap in the literature exploring the enhanced use of RFID to substantially add values to the supply chain operations, especially beyond what the RFID vendors could offer. This paper presents a multi-agent system, incorporating RFID technology, aimed at fulfilling the gap. The system is developed to model supply chain activities (in particular, logistics operations) and is comprised of autonomous and intelligent agents representing the key entities in the supply chain. With the advanced characteristics of RFID incorporated, the agent system examines ways logistics operations (i.e. distribution network) particular) can be efficiently reconfigured and optimised in response to dynamic changes in the market, production and at any stage in the supply chain.","PeriodicalId":232862,"journal":{"name":"2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123134549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A revisit on modeling framed slotted aloha Anti-collision protocol for RFID systems","authors":"Emad A. Felemban","doi":"10.1109/RFID-TA.2012.6404537","DOIUrl":"https://doi.org/10.1109/RFID-TA.2012.6404537","url":null,"abstract":"This paper presents a novel mathematical model for Anti-collision protocols based on Framed Slotted Aloha scheme. Using recursive calculations, the proposed model accurately estimates the probability of discovering tags in multiple rounds discovery system. First, the model estimates the probability of detecting a given number of tags in one single interrogation round. Then using a probability map, the model estimates the probability of detecting the given number of tags in multiple interrogation rounds. Our results show that the proposed model accurately predicts the tags detection probability. We then use the proposed model to optimally configure the reader parameters (i.e. the frame size and the number of interrogation rounds).","PeriodicalId":232862,"journal":{"name":"2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130726559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Safkhani, N. Bagheri, Pedro Peris-López, Aikaterini Mitrokotsa, J. Castro
{"title":"Weaknesses in another Gen2-based RFID authentication protocol","authors":"M. Safkhani, N. Bagheri, Pedro Peris-López, Aikaterini Mitrokotsa, J. Castro","doi":"10.1109/RFID-TA.2012.6404572","DOIUrl":"https://doi.org/10.1109/RFID-TA.2012.6404572","url":null,"abstract":"There is a high need for secure authentication protocols conforming with the EPC Class-1 Generation 2 (Gen2 in short) standard. The security analyses of the new born authentication protocols provide some guidelines and lessons that should be considered in the design of new proposals. In this paper, we scrutinize the security of a Gen2 based RFID authentication protocol which has been recently proposed by Yi et al. [8]. Our security analysis highlights important security pitfalls in this proposal. More precisely, we show a simple approach to desynchronize the tag and the reader. Moreover, we present tag impersonation and reader impersonation attacks. Finally, we show how the use of random numbers does not prevent traceability attack. The success probability of all the proposed attacks is 1 and their complexity is minimal since at most one eavesdropped session of the protocol is required.","PeriodicalId":232862,"journal":{"name":"2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134079923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. D’Errico, M. Bottazzi, F. Natali, Enrico Savioli, Stefania Bartoletti, A. Conti, D. Dardari, Nicoló Decarli, Francesco Guidi, F. Dehmas, L. Ouvry, U. Alvarado, N. Hadaschik, C. Franke, Z. Mhanna, M. Sacko, Y. Wei, A. Sibille
{"title":"An UWB-UHF semi-passive RFID System for localization and tracking applications","authors":"R. D’Errico, M. Bottazzi, F. Natali, Enrico Savioli, Stefania Bartoletti, A. Conti, D. Dardari, Nicoló Decarli, Francesco Guidi, F. Dehmas, L. Ouvry, U. Alvarado, N. Hadaschik, C. Franke, Z. Mhanna, M. Sacko, Y. Wei, A. Sibille","doi":"10.1109/RFID-TA.2012.6404509","DOIUrl":"https://doi.org/10.1109/RFID-TA.2012.6404509","url":null,"abstract":"We present a novel radio-frequency identification (RFID) system with capability of localization and tracking of passive or semi-passive tags. Localization and tracking features are enabled by backscatter modulation on ultra-wide bandwidth tag's antenna. A ultra-high frequency signal allows the wake-up of the tags enabling the reduction of energy consumption and ensuring compatibility with existing RFID systems. The overall system as well as the reader and tag architectures are introduced. The localization and tracking performance evaluation is presented in some reference scenarios.","PeriodicalId":232862,"journal":{"name":"2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122348891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}