tag 标签: polarized

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  • 所需E币: 4
    时间: 2020-1-13 14:41
    大小: 192.42KB
    上传者: rdg1993
    Acircularlypolarizedmicrostripantennawithaphotonicbandgapgroundplane……
  • 所需E币: 5
    时间: 2020-1-13 15:03
    大小: 119.03KB
    上传者: 2iot
    DualPolarizedBaseStationAntennasForPolarizationDiversitysystemsDualPolarizedBaseStationAntennasForPolarizationDiversitySystemsItiswellknownthatinacellularnetwork,mobilephoneshaveconsiderablylowertransmittalpowerthanthetransmittersofthebasestations.Thismeansthatthetransmissionfromthemobilephonetothebasestation(uplink)ismuchmoreunfavorableinrelationtothetransmissionfromthebasestationtothemobilephone(downlink).Tocompensatethis,awayofimprovingthequalityofreceptionatbasestationshadtobefound.Duetothemulti-pathsignalpropagationofradiosignals,whichoccursinurbanareas,socalledSpaceDiversityReceptionhasbeenintroducedwhichprovidesthebestresultsinthefield.SpaceDiversityReceptionisbasedonthefollowingidea:Thesignaltransmittedbyamobilephonei……