2009 IEEE International Conference on RFID最新文献_第2页

Performance analysis of stacked RFID tags 堆叠式RFID标签的性能分析

2009 IEEE International Conference on RFID Pub Date : 2009-04-27 DOI: 10.1109/RFID.2009.4911194

Feng Lu, Xiaosheng Chen, Terry Tao Ye

{"title":"Performance analysis of stacked RFID tags","authors":"Feng Lu, Xiaosheng Chen, Terry Tao Ye","doi":"10.1109/RFID.2009.4911194","DOIUrl":"https://doi.org/10.1109/RFID.2009.4911194","url":null,"abstract":"Most RFID tag performance analysis is based on the assumption that the tag is stand-alone when interacting with the readers. However, in the real world, RFID tags are often stacked together when deployed, i.e., RFID-labeled carton boxes stacked on the pallet. When multiple RFID tag antennas are placed close to each other, each antenna behaves like a shielding and reflecting object to others and the radiation pattern and other EM properties will be detuned. The stacking impact often leads to performance degradation and in many cases, read and write failure. In this paper, we first derive an RCS model to generalize a loaded antenna as a shielding and reflecting object. We then introduce a normalized mutual impedance matrix of multiple antennas to formulate the coupling effects among stacked antennas. To quantify and visualize the stacking impact in a real world scenario, we also construct a 3-D EM model in Agilent® AMDS consisting of 27 (3 × 3 × 3) stacked carton boxes, each with Alien® tags attached on the surface. Our theoretical calculation agrees with the simulation and shows that both tag radiation pattern and other EM properties will be greatly altered by neighboring tags. Compared with tags in stand-alone scenarios, the degradation at different positions could be very significant (more than 6dB in some directions).","PeriodicalId":417077,"journal":{"name":"2009 IEEE International Conference on RFID","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116409840","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}

引用次数: 44

A capacitive touch interface for passive RFID tags 一种用于无源RFID标签的电容触摸界面

2009 IEEE International Conference on RFID Pub Date : 2009-04-27 DOI: 10.1109/RFID.2009.4911212

A. Sample, D. Yeager, Joshua R. Smith

引用次数: 75

Load shedding based resource management techniques for RFID data 基于减载的RFID数据资源管理技术

2009 IEEE International Conference on RFID Pub Date : 2009-04-27 DOI: 10.1109/RFID.2009.4911168

N. Ahmed, U. Ramachandran

{"title":"Load shedding based resource management techniques for RFID data","authors":"N. Ahmed, U. Ramachandran","doi":"10.1109/RFID.2009.4911168","DOIUrl":"https://doi.org/10.1109/RFID.2009.4911168","url":null,"abstract":"RFID based systems are enjoying widespread adoption in a variety of application scenarios. Item tracking in a supply chain environment is one such application. From an application perspective, there are two challenges: (a) the data rates for large deployments are growing significantly; (b) the demands placed on the system for query processing in real time are also on the rise. Meeting these challenges in large-scale deployments is non trivial. The hardware base for RFID based systems compound these challenges due to the fact that RFID readers are error-prone and reliable reading of RFID tags is hampered by a number of physical limitations such as environmental conditions, and contents of the items carrying the tags. Naturally, the reliability of these systems become even more questionable when both the data rates increase and the need for real time processing of queries increases. We propose load shedding mechanisms that use the spatial and temporal properties of RFID deployments to combat the challenges due to increased demands for tag and query processing in real time. These mechanisms are piggy-backed on top of a middleware Reliable Framework for Radio Frequency IDentification (RF2ID)that uses redundancy to improve the reliability of RFID deployment. The basic idea in RF2ID is to use the spatial notion of a path taken by items flowing from source to destination. By cumulatively aggregating the tags collected by entities called Virtual Readers (VR) that are placed along the path, the total reliability of the system is enhanced. The VRs cooperatively shed the load under heavy load conditions. The built-in redundancy in the RF2ID system allows the VRs to shed load with reasonable system performance thus enhancing the overall reliability of the deployment. Two different load shedding strategies are proposed in the literature: space based approach and time based approach. These strategies have been implemented in the RF2ID middleware and performance results show the efficacy of these mechanisms for dealing with increased data rates.","PeriodicalId":417077,"journal":{"name":"2009 IEEE International Conference on RFID","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130446825","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}

引用次数: 11

Multipath fading measurements for multi-antenna backscatter RFID at 5.8 GHz 5.8 GHz多天线后向散射RFID的多径衰落测量

2009 IEEE International Conference on RFID Pub Date : 2009-04-27 DOI: 10.1109/RFID.2009.4911197

J. Griffin, G. Durgin

{"title":"Multipath fading measurements for multi-antenna backscatter RFID at 5.8 GHz","authors":"J. Griffin, G. Durgin","doi":"10.1109/RFID.2009.4911197","DOIUrl":"https://doi.org/10.1109/RFID.2009.4911197","url":null,"abstract":"UHF and microwave backscatter RF-tag systems, including radio frequency identification (RFID) and sensor systems, experience multipath fading that can be more severe than that found in a conventional transmitter-to-receiver channel. Previous work has shown that multipath fading can be reduced on the modulated-backscatter signal received from the RF tag in a non-line-of-sight (NLOS) channel if more than one RF-tag antenna is used to modulate backscatter. This paper presents the first multipath fading measurements for backscatter tags using multiple antennas at 5.79 GHz - the center of the 5.725–5.850 GHz, unlicensed industrial, scientific, and medical (ISM) frequency band that may offer reliable operation for future, miniature RF tags. NLOS measurement results are presented as cumulative density functions (CDF) and fade margins for use in backscatter radio link budget analysis and a detailed description of the custom backscatter testbed used to take the measurements is provided. The measurements show that gains are available for multiple-antenna RF tags and results match well with gains predicted using the analytic fading distributions derived previously.","PeriodicalId":417077,"journal":{"name":"2009 IEEE International Conference on RFID","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131263773","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}

引用次数: 49

HB-MP++ protocol: An ultra light-weight authentication protocol for RFID system hb - mp++协议:一种用于RFID系统的超轻量级认证协议

2009 IEEE International Conference on RFID Pub Date : 2009-04-27 DOI: 10.1109/RFID.2009.4911167

Bongno Yoon, M. Sung, Su-jin Yeon, H. S. Oh, Yoonjoo Kwon, Chul-Jin Kim, Kyung-Ho Kim

引用次数: 29

Wideband system-level simulator for passive UHF RFID 无源超高频RFID宽带系统级模拟器

2009 IEEE International Conference on RFID Pub Date : 2009-04-27 DOI: 10.1109/RFID.2009.4911189

D. Arnitz, U. Muehlmann, T. Gigl, K. Witrisal

引用次数: 13

A circularly polarized planar antenna modified for passive UHF RFID 一种用于无源超高频射频识别的圆极化平面天线

2009 IEEE International Conference on RFID Pub Date : 2009-04-27 DOI: 10.1109/RFID.2009.4911210

D. Deavours

引用次数: 45

Inference of product quality by using RFID-enabled traceability information a study on the US pharmaceutical supply chain 通过使用rfid可追溯性信息推断产品质量——对美国制药供应链的研究

2009 IEEE International Conference on RFID Pub Date : 2009-04-27 DOI: 10.1109/RFID.2009.4911170

T. Inaba

引用次数: 9

Change of read range for UHF passive RFID tags in close proximity 改变近距离UHF无源RFID标签的读取范围

2009 IEEE International Conference on RFID Pub Date : 2009-04-27 DOI: 10.1109/RFID.2009.4911202

Yuto Tanaka, Y. Umeda, O. Takyu, M. Nakayama, Kazunari Kodama

引用次数: 27

Demonstration of improved passive UHF RFID coverage using optically-fed distributed multi-antenna system 利用光馈分布式多天线系统改进无源超高频射频识别覆盖的演示

2009 IEEE International Conference on RFID Pub Date : 2009-04-27 DOI: 10.1109/RFID.2009.4911173

S. Sabesan, M. Crisp, R. Penty, I. White

引用次数: 24