6-15数字频率合成器

数字频率合成器的设计与制作无线电教研室SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet数字频率合成器电路测试与设计南京信息职业技术学院地址：南京市仙林大学城文澜路99号无线电教研室SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet锁相环框图PDLFVCOfii0f00uDuc锁相环的基本组成框图原理复习SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet数字频率合成器电路测试与设计南京信息职业技术学院地址：南京市仙林大学城文澜路99号无线电教研室SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet数字频率合成器框图数字频率合成器原理复习SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet数字频率合成器电路测试与设计南京信息职业技术学院地址：南京市仙林大学城文澜路99号无线电教研室SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet设计的主要技术指标:锁相环频率输出范围:1KHz---99kHz数字显示输出频率频率间隔:f=1KHzSDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet数字频率合成器电路测试与设计南京信息职业技术学院地址：南京市仙林大学城文澜路99号无线电教研室SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet工作任务:1.完成分频器设计数字译码显示电路的设计锁相环部分设计2.画电路原理图3.元器件参数设计4.布线、画接线图、焊接5.调试实际操作环节主要分四部分a.晶振＋固定分频；b.分频比显示电路；c.可变分频部分；d.锁相环电路6、论文7、答辩锁相环路参考振荡器fi=4M固定分频器Mfi’=1KPDLFVCOf0可变分频器N开关消抖电路分频比控制电路译码驱动显示电路数字频率合成器电路框图SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet数字频率合成器电路测试与设计南京信息职业技术学院地址：南京市仙林大学城文澜路99号无线电教研室SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet设计方案1.晶振部分、分频部分2.锁相环部分3.可变分频部分4.可变分频比译码驱动显示电路SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet数字频率合成器电路测试与设计南京信息职业技术学院地址：南京市仙林大学城文澜路99号无线电教研室SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternetCMOS数字式晶体振荡器-----4M方波信号输出1.晶振部分、分频部分U1A74HC00D123U1B74HC00D456C124pFC224pFR122MOhm_5%X2HC-49/US_5MHzBusBusBusBusBusBusBusBusBusBusBus22M4M4MR1为反馈电阻，使非门工作在放大区。即非门相当于高增益的反相放大器，晶体等效为电感，组成谐振电路。产生一个正弦波的波形，u1B实现整形功能，将正弦波转换为方波。SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet数字频率合成器电路测试与设计南京信息职业技术学院地址：南京市仙林大学城文澜路99号无线电教研室SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternetCPA二进制计数器的时钟输入端,下降沿有效.CPB五进制计数器的时钟输入端.下降沿有效CR清零端QD高位,QA低位可将二进制和五进制串起来作为十进制分频器。U6NET_1674LS390123456781615141312111091CPA1CR1QA1CPB1QB1Qc1QD+VCC2CPB2CR2QA2CPB2QB2QC2QD74LS390十进制计数器用做分频器SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet数字频率合成器电路测试与设计南京信息职业技术学院地址：南京市仙林大学城文澜路99号无线电教研室SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet4000=10分频x10分频x10分频x4分频4M1K分频74LS390:10分频分频比为4000两种10分频方式SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet数字频率合成器电路测试与设计南京信息职业技术学院地址：南京市仙林大学城文澜路99号无线电教研室SDMobileStationMSC/VLRBaseStationSubsystemGMSCNetworkSubsystemAUCEIRHLROtherNetworksNote:Interfaceshavebeenomittedforclaritypurposes.GGSNSGSNBTSBSCNodeBRNCRNSUTRANSIMMEUSIMME+PSTNPLMNInternet74LS390:4分频000001010011100分频方式1分频方式22CPB2CR12CPA1QA1QB1QC1QD151412131110910分频10分频10分频去锁相环14脚4分频74LS3904000分频电路连接2CPB2CR12CPA1QA1QB1QC1QD15141213111091K信号1CPB1CR11CPA1QA1QB1QC1QD12435674000=10x10x10x44M1CPB1CR11CPA1QA1QB1QC1QD124356774HC00与非门U2NET_141234567141312111098+VCCGND74HC00SDMobileStationMSC/VLRBaseSt