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,。,,,,,,。GSM,,。11.1,,。GSM900MHz1800MHz(DCS)2,CDMA:824~849MHz,:869~894MHz,2GHz。,220V5V,,(VCO),,。1。,,[1],,。,(,450052):,,,。,,,,。,。:;;;:TN011.9:A1674-6236(2010)04-0051-04Calculationofmobilephonesignalblocker’sshieldingrangeandinfluencetocommunicationsystemsLIUHui-xi,ZOUPeng(SchoolofInformationEngineering,ZhengzhouUniversity,Zhengzhou450052,China)Abstract:Inrecentyears,themobilephonesignalblockersareextensivelyused,althoughtheusingoftheseequipmentsinparticularplacescanrestrictcellphone,butmeanwhilebringseriousinterferencetomobilecommunicationsystems.Inor-dertoregulatetheuseofmobilephonesignalblockers,quantitativeresearchthedevice’seffectiveshieldingrangeandtheinfluencetomobilecommunicationsystems,thispaperbeganfromtheworkingprincipleofmobilephonesignalblockersandthepropagationlossesduringthesignaltransmission,andthengavethestudyofmobilephonesignalblockersaccord-ingtotherelevantstandardsofthecommunicationsindustryandwirelesspropagationmodels.Finallythoughcomparingandanalyzingthecalculationdataandthemeasurementdata,verifiedthemodelcalculationmethodwhichiscorrectandfeasible.Keywords:mobilephonesignalblocker;propagationloss;wirelesspropagationmodels;CCHTRX:2010-01-18:201001043:(72102210091):(1984—),,,。:、。1ElectronicDesignEngineering18Vol.184No.420104Apr.2010-51-DOI:10.14022/j.cnki.dzsjgc.2010.04.020《》201042800MHz~1GHz,,,,,,+9dB(GSM),,,,,,,。1.2GSMGSM,。,,,,。GSM,5[2],1。4,,,,5,[3]。1.3,,。,(、、1)。,:Lp=32.4+20lgf+201gd(1),f,MHz;d,km。,。,hbhm。:Lp=32.4+20lgf+40lgd-20lghb-20lghm(2)Okumura-HataCost231-Hata。[4]。Okumura-Hata:Lp=69.55+26.16lgf-13.82lghb+(44.9-6.55lghb)lgd-AOkumurahm(3)Cost231-Hata:Lp=46.3+33.9lgf-13.82lghb+(44.9-6.55lghb)lgd-ACost231hm+Cm(4)(3)(4):Lp,dB;f,MHz;hb,m;hm(1~10m),1.5m;d,km;Cm,0dB,3dB;AOkumurahm,(1.1lgf-0.7)hm-(1.56lgf-0.8);ACost231hm=(1.1lgf-0.7)hm-(1.56lgf-0.8)(5),:Lps=Lp()-2[lg(f/28)]2-5.4(6),,。,,。Okumura-Hata150~1000MHz,Cost231-Hata1500~2000MHz,Okumura-HataGSM900MHz,Cost231-HataDCS1800MHz。22.1::CDMA,869~894MHz;GSM,925~960MHz;DCS,1805~1880MHz;PHS,1900~1960MHz。:,AC160~240V;,DC5V。[6]::G/1800/C,:949MHz/1805MHz/860MHz,:37m,:15dBi,:20W,:。,7402A,2、3。1012/dBm-110~-100-100~-95-95~-90/dBm3-95~-904-94~-47585~47-52-2949MHz,90dBμV,20.6dBμV(949MHz)7.4dBμV(949MHz),949MHz118dBμV。31805MHz,93.9dBμV,18dBμV(1805MHz)14.8dBμV(1805MHz),1805MHz126.7dBμV。[5],HP4396B。2。949MHz1805MHzλ/6λ/80,,949MHz17.88dBm,1805MHz15.66dBm。1.3m,,,≥47dBm。,0.5~1.5m,(2)0.5~1.5m,949MHz4。,0.5~1.5m,1805MHz5。,,1.3m,0.5~1.5mGSM900MHz33.8~58.5m。DCS1800MHz29.7~51.5m。2.24,,,-85dBm,0.5~1.5m。(3)37mGSM900MHz46。(6)37mDCS1800MHz47。2,0.5~1.5m,677~1172m37mGSM900MHz4。,596~1032m37mDCS1800MHz4。231.8~2GHz/MHz9491174.6111.31805149127.29491144.2-20.518051128.9-174949MHz51805MHz6GSM900MHz7DCS1800MHz,-53-《》20104C#SAEJ1939。,。,。,,,。,。:[1]SAE.J1939.Recommendedpracticeforaserialcontrolandcommunicationevhiclenetwork[S].USA:SocietyofAutomo-tiveEngineers,2005.[2],.SAEJ1939[J].,2000(2):19-21.[3]SAE.J1939-71.Vehicleapplicationlayer(throughDecember2004)[S].USA:SocietyofAutomotiveEngineers,2006.[4],.SAEJ1939[J].,2006(12):7-9.[5],.SAEJ1939[J].,2009(2):24-26.[6],,.SAEJ1939[J].,2006(2):64-66.45nmSpartan-6FPGASpartan-6FPGA(SamsungFoundry)45nm。FPGA,、、,Spartan-6FPGA。45nmSpartan-6FPGA。Spartan-6SpartanFPGA,45nm(LP)。45nm,。45nm,,FPGA。ISE11.5。45nm,(OPC),Spartan-6FPGA(DFM)。,。45nm,FPGA,。!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:20100410043,,E7402A。,80%±4dB,。4,。。:[1].GSM[M].,2004.[2].GSM[J].,2008(6):122-126.[3].900/1800MHzTDMA(YD1139-2001)[S].,2001.[4].GSM[M].,2004.[5],.GSM/CDMARF[J].,2003(4):87-89.[6].GSM11,GSM12,GSM2007CDMA5[R].:,2007.(50)-54-
本文标题:手机屏蔽器屏蔽范围及对通信系统影响的计算
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