搜索
1.基本概念目前GSM移动通信使用的频段为：PGSM：890~915MHz935-960MHz，1~124EGSM:880~915MHz925-960MHz,1~124975–1023DCS:1710~1785MHz1805-1880MHz512-885PCS:1850~1910MHz1930~1990MHz512-810GSM850:824-849869-894128~251载频间隔200kHz双工频率间隔GSM90045MHz；DCS180095MHz。TXmodebandGSM850,RF=824.2+0.2*(ARFCN-128)bandP-GSM900,RF=890+0.2*ARFCNbandDCS1800,RF=1710.2+0.2*(ARFCN-512)bandPCS1900,RF=1850.2+0.2*(ARFCN-512)bandE-GSM900,RF=890+0.2*(ARFCN-1024)RXmode:bandGSM850,RF=824.2+0.2*(ARFCN-128)+45bandP-GSM900,RF=890+0.2*ARFCN+45bandDCS1800,RF=1710.2+0.2*(ARFCN-512)+95bandPCS1900,RF=1850.2+0.2*(ARFCN-512)+80bandE-GSM900,RF=890+0.2*(ARFCN-1024)+45几种射频方案的介绍1.HITACHIB4PLUSITM100,SIM100,S168系列2.HITACHIB5ESIM100+,SIM200,S288,S3683.ADIOTHELOTVSIM100A4.SKYWORKSCX74073SIM300HITACHIB4PLUSHITACHIB5EADIOTHELOTVSKYWORKSCX74073射频技术指标