论文
ABSTRACT
Withthedevelopmentofthemobilecommunication,thedemandsofusersforthe
capacityofthecommunicationsystembecomeshigherandhigher.Butthefrequency
useableislimited,SOhowtoutilizethelimitedfrequencyandenhancetheefficiencyof
thefrequencybecomethehottopicofthemobilecommmfication.Acreative
technologyhasprovidedanovelsolutiontodeal、析mthisproblem,whichnames
Multiple-InputandMultiple-Output0VIIMO).wirelesssystems,characterizedby
multipleantennaelementsatthetransmitterandreceiver,canincreasedcapacityand
reliabilityinrichmultipathenvironments.Suchsystemsoperatebyexploitingthe
spatialpropertiesofthemultipathchannel,therebyofferinganewdimensionwhichCall
beusedtoenableenhancedcommunicationperformance.Whilecodingandsignal
processingarekeydementstosuccessfulimplementationofaMIMesystem,the
propagationchannelandantennadesignrepresentmajorparametersthatultimately
impactsystemperformance.Sodesignhighefficiencyantennaandlowrelationantenna
arrayisimportantforMIMosystem.
firstly,aintroductionofthediversityismade,thenaexplainabouttheantenna
diversityandthedemandfortheantennadesignaleallprovidedinthispaper.
Secondly,thevarioustheoreticalmethodsfortheanalysisofthemicrostripantenna
alebrieflydescribed.andthecavitymodeloftherectangularmicrostripantennais
revieweddetaily.Thenthetechniquesforbroadbandingandcompactingofmicrosrtip
antennasarealsodiscussed.Atlastacompactandbroadbandmicrostripantennaanda
llighisolationarrayaredeVised.
Lastly,tomakethebestuseofthelowprofileattributeofthedesignedmierostrip
anennaaprintedinvertFantennaisdesign,operatingfrequencyis2.4-,,2.5GHzand
5.2巧.4GHz.anda2Darray丽也highisolalion’constitutedbytwoPIFAanda
microstripantenna,iscontrived.
Keyword:MIMe,antennadiversity,mierostripantenna,invertFantenna,compact
antennaⅡ