畢業(yè)論文外文翻譯-雙頻微型貼片天線的h-mrtd模擬

1、外文翻譯畢業(yè)設(shè)計(jì)題目：畢業(yè)設(shè)計(jì)題目：GPS抗干擾天線技術(shù)—多頻帶高增益微帶天線單元的仿真與設(shè)計(jì)原文原文1：HMRTDsimulationofdualfrequencyminiaturepatchantenna譯文譯文1：雙頻微型貼片天線的HMRTD模擬原文原文2：ANovelMethodfDesigningDualFrequencySlotPatchAntennaswithTwoPolarizations譯文譯文2：新的雙頻雙極化開槽微

2、帶天線的設(shè)計(jì)方法accurateresultsleadingtoareductionofbothmemyrequirementcomputationtime.Associatedwithpracticalmodelauniaxialperfectlymatchedlayer(UPML)absbingboundaryconditions[10]wasdevelopedathreedimensionalfmulationofthediscr

3、etedifferenceequationsarisingfromtheMaxwell’ssystemisfirstextendedtoaninhomogenousmediumitisappliedtotheanalysisofdualfrequencyminiaturepatchantenna.2Dualfrequencyslotloadedpatchantenna2.1DesignofslotloadedpatchantennaTh

4、elayoutoftheslotloadedpatchantennadesignedinthispaperisshowninFig.1.AsingleslotwithdimensionsLWiscutinarectangularpatchwithdimensionsabwithashtcircuitedplaneofwidthplacedatitsotherside.Theparametersoftheantennaarea=38mmb

5、=25mmL=36mmW=1mmd=2mmh=3mmr=1mmrespectively.OwingtobeingcompatiblewithstardICtechnologypronetointegrationwithothercomponentssiliconwafer(εr=11.7)wasedasalayerofmicrostripsubstrate.Betweenthegroundplatethewaferthereisalay

6、eroffoam(εr=1.07)whichcouldsuppresssurfacewaveinducedinthewafersubstrateasaresulttheefficiencythebwidthoftheantennawereincreasedtheradiationpatternimproved.Fig.1Geometryofdualbslotloadedmicrostripantenna2.2Measuredresult

7、sTheparametersoftheslotantennaareedasabovementioned.ThemeasurementscarriedoutonanAgilent8720Cvectwkanalyzer.ItisthenfoundthatbycontrollingtheshtedplanewidthboththeTM10TM30modesarestronglyperturbed.Fig.2showstypicalresult

8、softhemeasuredreturnlossfthecaseswithsa=10.250.1.RegardingtheresultsshowninFig.2itcanbeseenthattheperturbedTM10TM30modesareexcitedwithgoodimpedancematching.Howeverwhensa0.1therenofeedpointcanbefoundfexcitingthetwofrequen

9、cieswithgoodimpedancematching.Thisindicatesthattherearelimitationstothepresentdualbdesign.Itcanbeseenthattheobtainedfrequencyratio(f30f10)ofthetwofrequenciesfpresentdesignvariesintherange1.7～2.3.Ontheotherhfthecasesa=0.1

10、showninFig.2thefrequencyf10occurringat1.562GHzis～0.31timesthat(5.038GHz)faregularhalfwavelengthpatchwiththesamepatchsize.Inotherwdsthesizeofthedesignedantennainthispaperismuchsmallerthanregularhalfwavelengthpatchantenna.