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1、貴州大學(xué)本科畢業(yè)論文（設(shè)計）第I頁目錄摘要..........................................................................................................................................II前言.........................................................

2、....................................................................................11系統(tǒng)設(shè)計.................................................................................................................................2

3、1.1設(shè)計要求......................................................................................................................21.2總體設(shè)計方案.....................................................................................

4、.........................32單元硬件電路設(shè)計...............................................................................................................132.1發(fā)射部分電路的設(shè)計............................................................

5、..................................132.2接收部分電路的設(shè)計................................................................................................202.3PT22622272編碼解碼電路設(shè)計.....................................................

6、....................262.4抗干擾措施..............................................................................................................282.520dB衰減器的制作.................................................................

7、................................293軟件設(shè)計...............................................................................................................................303.1軟件設(shè)計和硬件設(shè)計的關(guān)系.....................................

8、...............................................303.2發(fā)射部分程序設(shè)計....................................................................................................303.3接收部分程序設(shè)計...............................................

9、.....................................................314系統(tǒng)測試...............................................................................................................................324.1測試使用的儀器.....................

10、...................................................................................324.2指標(biāo)測試和測試結(jié)果................................................................................................324.3波形觀察及距離測量.............

11、...................................................................................384.4結(jié)果分析....................................................................................................................39結(jié)束語.......

12、................................................................................................................................40參考文獻......................................................................................

13、.............................................42致謝...........................................................................................................................................43附錄1使用說明.......................

14、...............................................................................................44附錄2主要元器件清單...........................................................................................................45附錄3電

15、路原理圖及印制板圖...............................................................................................46附錄4程序清單...........................................................................................................

16、............54貴州大學(xué)本科畢業(yè)論文（設(shè)計）第III頁simplexwirelesscallingsystemAbstractThesimplexwirelesscallingsystemconsistsoftwoparts:transmitpartreceivepart.Thetransmitpartadoptsthephaselockedlooppatternoffrequencysynthesizingtechnolo

17、gyusestheMC145152MC12022chipstocomposethephaselockedloop.Itlocksthefrequencyofthecarrierwaveat35MHz.Thestabilizationofthecarrierwavecanbe4105theaccuracycanbe3105.Thefrequencymodulationtheconfectionofthecarrierwavearereal

18、izedbythecapacitychangingdiodeV149theintegrationvoltagecontroloscillatMC1648chip.Theendpoweramplifierusestheaudion2SC1970tomakeitwkinthethirdmagnifyingstateitimprovestheefficiencyofthemagnifierthepoweroftheoutputreachest

19、hedesigndem.ThereceivepartusesthesupercosmicallyAMFMdimensionalsoundstereoradioreceptionintegrationchipCXA1238Sasthemainpart.Thesensitivity、themirrcontrolrestrain、theSNReverycapabilityindexallreachthedesigndem.Theaudiofr

20、equencypoweramplifieradoptstheintegrationchipLM386.Themaximumvoltageamplifyingmultipleis200.ItusesPT22622272codingdecodingcircuittorealizethedatatransmissionoperationaswellastheplatfmchoosingfunction.Theinputoftheaudiofr

21、equencythedatacanbeautomaticallytransfmed.AT89S52isusedasthecontrollingpartofthewholesystem.ThedesignoftheprogramadoptstheClanguagetomakeitbeprogramminglyrealizedinthetranslat.Thedisplayadopts12864latticeLCDtoshow.Aftert

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