标签: polarized
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Acircularlypolarizedmicrostripantennawithaphotonicbandgapgroundplane……
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DualPolarizedBaseStationAntennasForPolarizationDiversitysystemsDualPolarizedBaseStationAntennasForPolarizationDiversitySystemsItiswellknownthatinacellularnetwork,mobilephoneshaveconsiderablylowertransmittalpowerthanthetransmittersofthebasestations.Thismeansthatthetransmissionfromthemobilephonetothebasestation(uplink)ismuchmoreunfavorableinrelationtothetransmissionfromthebasestationtothemobilephone(downlink).Tocompensatethis,awayofimprovingthequalityofreceptionatbasestationshadtobefound.Duetothemulti-pathsignalpropagationofradiosignals,whichoccursinurbanareas,socalledSpaceDiversityReceptionhasbeenintroducedwhichprovidesthebestresultsinthefield.SpaceDiversityReceptionisbasedonthefollowingidea:Thesignaltransmittedbyamobilephonei……
