2.45ghzrfid標(biāo)簽天線(xiàn)及閱讀器天線(xiàn)設(shè)計(jì)與研究

1、西南交通大學(xué)碩士學(xué)位論文2.45GHzRFID標(biāo)簽天線(xiàn)及閱讀器天線(xiàn)設(shè)計(jì)與研究姓名：李超申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：電路與系統(tǒng)指導(dǎo)教師：馮全源201103西南交通大學(xué)碩士研究生學(xué)位論文第1I頁(yè)Abstract。Radiofrequencyidentification(RFID)isanoncontactautomaticidentificationtechnologythewirelessradiofrequencycommunication

2、isusedtoproceednoncontacttwoWaycommunication，SOastoachieveautomatictargetrecognitionandaccesstelevantdatas，comparedwithotheridentificationmethods，thetechniquehashighaccuracyspeed，environmentadaptivenessandmanyOtheradvant

3、agesIndomestic，atpresent，lowfrequencyandhi曲frequencyRFIDtechnologydevelopsquicklywiththebeginningofmicrowaveband(245GHz)research，theantennaasanimportantpartoftheRFIDsystem，itshasimportanttheoreticandpracticaleffectstesea

4、rchInthispaperthetagantennaandreaderantennaof245GHzI心Dsystemshasbeenstudied，andthemicrostrippatchantennasandmicrostripslotantennasareproposedasthemodelsofantennaTheantenna’Sstructure，workingprinciple，andanalysismethodhas

5、beenin仃oduted，includingtransmissionlineanalysismodelandtheprincipleofbawellniemethodsTheperformanceparametersinvolvedinthedesignprocessofthemicrostrippatchantennasandmicrostripslotantennashasbeenanalyzedanddiscussedSecon

6、dly’theGeneticAlgorithrn(GA)isalsostudiedinthispaperandaccordingtotheactuallyneeds，presentsaimprovementplan：theNicheGeneticAlgorithm(NGA)witheliteprotectionstrategyandthenumericaltestandverifyhasbeencompleted，Andonthisba

7、sis，combiningthetransmissionlinetheorymethod，thispaperanalyzedthemagneticmaterialandtheeffectsofminiaturizationmicrostripantennaThemagneticmaterialalsobeenoneofthesubstrates也e245GHzpassiveI訌IDtagantennaisdesignedTheanten

8、nawithasimplestructure，easytointegrateTheantenna’Ssizeis40mm木30mm，alsowithgoodreturn—losscharacteristicsanddirectivitycharacteristics，t11eantenna’SgainiS235dBi，thebandwidth(S1110dB)is70MHz，satisfiedtheI訌IDtagantennaworki

9、ngfrequencyFinallywestudiedreaderantennatheantenna’Shigh—gainandthewidebandcharacteristicsarestudiedseveralmethodsofacquiretheantennashighgainandwidebandareanalyzied，andthemetal—reflectioncavityandthemicrostripslotantenn

10、aareproposedasthedesignmodelTheMultiObjectiveGeneticAlgorithm(MOGA)isadoptedtooptimizetheantenna’sizeinaddition，themagneticmaterialsalsobeusedteducethesizeoftheantennaareaderantennaworkinginthe245GHzisproposed，thepropose

11、dantennafabricatedbyfivelayers，thesizeoftheantennais150ram宰200mm，thegainis109dBi，thebandwidthoftheantennais230MHzAndtheantennaisfabricatedandmeasurededthemeasuredresultsmeettherequirements，andtheantenndsreadingdistanceiS