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首页> 外文OA文献 >Analysis and solutions for RFID tag and RFID reader deployment in wireless communications applications. Simulation and measurement of linear and circular polarised RFID tag and reader antennas and analysing the tags radiation efficiency when operated close to the human body.
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Analysis and solutions for RFID tag and RFID reader deployment in wireless communications applications. Simulation and measurement of linear and circular polarised RFID tag and reader antennas and analysing the tags radiation efficiency when operated close to the human body.

机译：无线通信应用中的RFID标签和RFID阅读器部署的分析和解决方案。线性和圆极化RFID标签和阅读器天线的仿真和测量，并在靠近人体操作时分析标签的辐射效率。

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摘要

The aim of this study is to analysis, investigate and find out the solutions for theudproblems associated with the implementations of antennas RFID Reader and Tagudfor various applications. In particular, the efficiency of the RFID reader antennaudand the detection range of the RFID tag antenna, subject to a small and compactudantenna¿s design configuration have been studied.udThe present work has been addressed directly to reduce the cost, size and increaseudthe detection range and communication reliability of the RFID frameworkudantennas. Furthermore, the modelling concept of RFID passive tags mounted onudvarious materials including the novel design of RFID reader antenna usingudGenetic Algorithm (GA) are considered and discussed to maintain reliable andudefficient antenna radiation performances.udThe main benefit of applying GA is to provide fast, accurate and reliable solutionsudof antenna¿s structure. Therefore, the GA has been successfully employed touddesign examples: meander-line, two linear cross elements and compact Helical-udSpiral antennas.udIn addition, a hybrid method to model the human body interaction with RFID tagudantenna operating at 900MHz has been studied. The near field distribution and theudradiation pattern together with the statistical distribution of the radiationudefficiency and the absorbed power in terms of cumulative distribution functionsudfor different orientation and location of RFID¿s tag antenna on the human bodyudhave been demonstrated.udSeveral tag antennas wi th symmetrical and unsymmetrical structure configurationsudoperating in the European UHF band 850-950 MHz have been fabricated andudtested. . The measured and simulated results have been found to be in a goodudagreement with reasonable impedance matching to the typical input impedance ofudan RFID integrated circuit chip and nominal power gain and radiation patterns.
机译：这项研究的目的是分析，调查和找出与天线RFID阅读器和Tag ud的实现相关的各种问题的解决方案。尤其是，研究了小型紧凑的天线设计结构下的RFID阅读器天线的效率和RFID标签天线的检测范围。直接解决了当前工作以降低成本，尺寸和增加 RFID框架 udantennas的检测范围和通信可靠性。此外，考虑并讨论了安装在各种材料上的RFID无源标签的建模概念，包括使用 udGenetic算法（GA）进行RFID阅读器天线的新颖设计，以保持可靠和低效率的天线辐射性能。是为天线结构提供快速，准确和可靠的解决方案。因此，遗传算法已成功应用于 uddesign实例：弯折线，两个线性交叉元件和紧凑的Helical- udSpiral天线。 ud此外，还采用一种混合方法来模拟人体与900MHz工作的RFID标签 udantenna的相互作用已经研究过。已经证明了RFID标签天线在人体上的不同方位和位置的近场分布和辐射模式以及辐射的统计效率效率和吸收功率的累积分布函数 ud。 ud已制作并测试了具有对称和非对称结构配置的850 950 MHz欧洲UHF频段中的几种标签天线。 。已发现测量结果和模拟结果具有良好的 uda度，并且与 udan RFID集成电路芯片的典型输入阻抗以及标称功率增益和辐射方向图具有合理的阻抗匹配。

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    Al Khambashi Majid Salim;

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  • 年度 2012
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