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硕士专业学位论文论文题目RFID标签天线的设计与仿真研究生姓名俞嘉指导教师姓名吴红卫专业名称电子与通信工程研究方向通信论文提交日期2012年10月16日RFID标签天线的设计与仿真中文摘要IRFID标签天线的设计与仿真中文摘要在现代通信系统中，天线是其中不可缺少的部分，移动通信系统的迅猛发展和电路集成化程度的不断提高，对天线提出了小型化、宽频带、多频段的要求。随着无线射频识别技术(RFID)的发展，RFID技术的应用已经变得越来越流行，如物流控制，库存管理以及生物工程等各个领域。面对一个巨大的潜在市场，无线射频识别系统将会受到越来越多的关注。与已有的一些识别技术相比，RFID具有显著的优点，像识别速度快，方法灵活，智能化程度高，尤其是它可以在各种复杂的环境中完成识别任务等优点备受青睐。在此应用背景下本论文首先系统地介绍了天线设计的基本原理，在此基础上设计了一款印刷偶极子天线，该天线结构小巧，微带线馈电，且性能稳定，同时还就各个尺寸对天线的性能影响作了仿真分析。接着在这款天线的基础上又设计了一款缝隙双频微带天线，工作频段为2.4GHz和5.2GHz。通过仿真得到2.4GHz处的带宽达到了600MHz（从2.05GHz~2.65GHz），在5.2GHz频段时阻抗带宽从4.75GHz到5.9GHz共1.15GHz。设计的天线具有稳定的性能。最后对未来相关的工作做了展望。关键词——RFID、印刷偶极子、频段、微带双频天线作者：俞嘉指导教师：吴红卫AbstractDesignandSimulationoftheRFIDTagAntennaIIDesignandSimulationoftheRFIDTagAntennaAbstractAntennaisanindispensablepartofmodernmobilecommunicationssystem.Nowadaystherapidlydevelopedcommunicationssystemandthehighlydegreedcircuitintegrationrequiretheminiaturization,broad-bandandmulti-bandofantennas.Thedevelopmentofthewirelessradiofrequencyidentificationtechnology(RFID)facilitatesitsapplicationinmanyfieldssuchasinthefieldsoflogisticscontrol,inventorymanagementandbiologicalengineering.Withahugepotentialmarketbehindit,thetechnologywillattractmoreandmoreattentioninthecomingfuture.Itsadvantagesoverothersimilartechniqueslieinitshighspeed,flexibility,highdegreeofintelligence,andespecially,itsabilitytoidentifytasksinvarioussophisticatedenvironments.InthecontextofRFID‘sapplication,thethesisfirstgivesasystematicexplanationofthebasicprinciplesaboutantenna‘sdesignandthenontheseprinciples,thethesispresentsadesignofaprinteddipoleantennathatiscompact,stablewiththecharacteristicofmicrostriplinefeed.Meanwhile,afurthersimulationanalysisismadeabouttheeffectsdifferentsizeshaveonantennas‘function.Onthebasisofthisdesign,adualbandmicrostrip-fedslotantennaiscreatedwithworkingfrequencyrangingfrom2.4GHzto5.2GHz.Throughsimulation,thebandwidthof600MHz(from2.05GHzto2.65GHz)isgainedinthe4GHzfrequencybandandimpedancebandwidthfrom4.75GHzto5.9GHzwiththetotalof1.15GHzinthe5.2GHzfrequencyband.Theantennahastheadvantageofstableperformance.Intheend,thethesispredictsthefuturedevelopmentoftheRFIDTagAntennaKeywords--RFID,printeddipole,band,Dual-BandMicrostripAntennaWrittenby：YuJiaSupervisedby：WuHongwei目录第一章绪论......................................................................................................................11.1无线通信的基本概念..........................................................................................11.2天线在无线通信中的作用..................................................................................11.3RFID天线的基本概念........................................................................................21.4电磁场数值计算..................................................................................................21.5仿真软件简介......................................................................................................31.6本文主要工作......................................................................................................4第二章天线基础知识......................................................................................................62.1天线基本知识......................................................................................................62.2天线的基本电参数..............................................................................................72.2.1天线的方向性..............................................................................................72.2.2天线的效率与增益......................................................................................92.2.3天线的输入阻抗........................................................................................102.2.4天线的带宽................................................................................................102.2.5天线的极化................................................................................................112.3对称振子基本知识...........................................................................................122.3.1对称振子简介.............................................................................................122.3.2对称振子电流分布.....................................................................................132.3.3对称振子辐射场........................................................................................142.4微带缝隙天线的基本知识................................................................................152.4.1微带缝隙天线的基本结构........................................................................162.4.2理想缝隙天线的分析方法与工作原理.....................................................182.4.3平板（对称）缝隙天线............................................................................192.5双频天线的基础知识........................................................................................2022.5.1单层贴片双频实现方法.............................................................................20第三章RFID技术及其天线设计分析...........................................................................243.1RFID系统...................................................................................................