使用高频结构仿真(High Frequency Structure Simulator,HFSS)软件对天线结构进行优化,使其与芯片阻抗匹配,模拟了天线在金属表面存在裂纹的情况。由仿真结果可以分析得出:设计的无线有芯片微带贴片型RFID转向架表面裂纹检测标签能够有效地实现远距离监测金属表...
RFID标签天线HFSS建模与仿真 本科生毕业设计（论文）正文（2012届始执行）
frequencyidentificationsystem.Onthebasisoftheanalysisofthemainparameters,ahalf-wavesymmetrydipoleandafoldeddipoleantennaworkingattheresonantfrequenciesof915MHzaredesignedontheFR4substrates.Inthispaper,thehigh-frequencystructuresimulationsoftwareHFSSisusedformodeling,simulationandoptimizationinthetagantennadesign.Simulation...
According to the HFSS simulation model, a physical RFID tags were fabricated by screenprinting technique based on polyethylene terephthalate and polyimide substrates, and carbon nanotubes with high surface area were selected as ammonia-sensitive materials. The surface morphology...
输入信号由天线中心处馈入,也就是RFID 芯片的所在位置.对于2.45 GHz 的工作频率其半波长度约为61mm ,设偶极子天线臂宽w 为1 mm ,且无限薄,由于天线臂宽的影响,要求实际的半波偶极子天线长度为57mm.在Ansoft HFSS 工具平台上, 采用有限元算法对该天线进行仿真,获得的输入回波损耗S11 分布图如图5a 所示,辐射...
This paper briefly introduces the basic working principle of the RFID system, and uses the 3D electromagnetic simulation software Ansoft HFSS and MATLAB software to make a comparison of magnetic field strength between different designs which have different track widths, track clearances and coil loops ...
RFID标签天线的与设计
compatiblewithERPsystemetc,andisverysuitableforanimalidentificationandmanagement.Therefore,thispaperchoosescattleeartagsbuilt-inUHFRFIDlabeltobestudied.ThispaperdesignsandoptimizesafoldeddipoleantennabasedonaNXPG2XLchipbyHFSSsimulationanalysissoftware,whichusedtofabricationUHFRFIDeartagsforcattle.TheantennacombinatestheT...
ChinascienceandTechnologyReview一种利用S参数测量平衡RFID标签天线阻抗的优化方法冯波涛,(1.广东银创通信工程有限公司佛山52800~2.北京邮电大学北京100876)1'丁于F掐■I[摘要】针对测量平衡fD标签天线阻抗的准确性问题,提出了一种利用s参数测量的优化方法。该方法将平衡RFID标签天线等效为双端口网络,通过联合使用端口短路...
rejectioncharacteristicisdiscussedthoughsimulationonHFSS.Thesimulatedandmeasuredresultshaveshownthattheantennahaswidebandcharacteristicfrom3.015GHzto13.27GHz,meansarelativebandwidthof126%andgoodband rejectioncharacteristic3.25GHzfrom3.6GHzandfrom5.15GHzto5.825GHz,whichcanavoidinterferencebetweentheUWBsystemandWiMaxandWLAN....