[毕业设计精品]小功率调幅发射系统的设计与安装及multisim软件仿真

错误未指定书签。A11A2A317A2摘要小功率调幅发射机常用于通信系统和其它无线电系统中，特别是在中短波广播通信的领域里更是得到了广泛应用。原因是调幅发射机实现调幅简便，调制所占的频带窄，并且与之对应的调幅接收设备简单，所以调幅发射机广泛地应用于广播发射。本课设结合MULTISIM软件来对小功率调幅发射机电路的设计与调试方法进行研究。MULTISIM软件能实现从电学概念设计到输出物理生产数据，以及这之间的所有分析、验证、和设计数据管理。使用MULTISIM等计算机软件对产品进行辅助设计在很早以前就已经成为了一种趋势，这类软件的问世也G7509G3835地G6564G20652了设计G1166G2604在机G7812、电G4388等行G1006的产品设计G17148G18339与G6940率。本课G20076的设计G11458的是G16213G8726G6496G6581G7380G3534本的小功率调幅发射系统的设计与G4445G16025对G2520G13435电路进行G16826G13466地G6518G16764，并G2045用MULTISIM软件G1235G11507设计了一G1022小功率调幅发射机。毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA12A2A317A24/10/2012目录A0A41A5A6A7A8A9A10A11A12A13A14A15A4A161A17A18A17A8A9A10A11A19A13A14A201A17A18A21A8A9A22A23A19A4A161A5A24A7A25A26A27A28A29A30A31A32A33A34A35A36A372A21A18A17A38A39A40A41A42A43A44A45A46A47A48A49A502A51A52A51A53A54A55A56A57A58A592A60A61A62A63A64A65A46A66A67A49A50A57A65A683A69A52A70A71A72A733A69A52A51A74A75A734A69A52A69A76A77A734A69A52A78A79A80A41A81A82A835A69A52A84A85A86A76A776A60A87A62A82A83A88A89A90A65A687A78A52A70A91A92A93A947A78A52A51A88A89A95A96A979A78A52A69A88A89A41A9812A91A99A100A10113A102A10314A104A10515错误未指定书签。A1061A107A10817A107第一章设计目的、任务和要求11设计目的与任务学生通G17819理G16782设计和实物制G1328G16311G1927G11468应的实G19481问G20076，G5053G3278和G17828用在G457通信电G4388线路G458中所学的理G16782G11705G16794和实验G6228能，G6496G6581通信电G4388系统的一G14336设计方法，G6564G20652设计能G2159和实G17353G2172G6175能G2159，为以G2530从G1119电G4388电路设计、研发电G4388产品G6183G991G14403G3921的G3534G11796。12设计内容与要求121设计内容G20G17小功率调幅发射系统G3设计一G1022小功率调幅发射系统。G16213G8726为G3G25G48G43G93G3的中G5527频率，频G12295G5242510G3，输出调幅波功率G3G51G19G80G68G91G3G305G21G19G19G80G58，调制系数G3G305G24G19G3G8，G2265G13488G993G3845G11507。G3122设计要求A109A110A111A112A113A114A115A116A117A118A119A120A121A122A115A116A123A124A110A125A126A127A128A129A130A131A132A133A134A115A135A136A137A138A139A140A141A142A117A143A144A115A116A145A136A137A146A147A148A110A149A150A151A135A123A152A110A153A154A155A156A157A158A159A160A117A161A144A136A137A130A133A162A117A161A144A126A147A130A133A163A162A123A164A110A136A137A165A166A167A141A168A123A169A110A147A148A170A171A172A163A123A173A110A174A175A176A177A167A141A174A141A177A141A178A179A117A111A112A180A141A115A116A145A130A133A181A182A183A180A184毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA1852A186A18717A1864/10/2012第二章总体方案介绍及工作原理说明21小功率调幅发射机的系统设计调幅发射机G1039G16213G2265G6336G989G1022G13464成G18108分G29G20652频G18108分、G19911频G18108分和电G9316G18108分。G8504G3282G11477G2447了电G9316这一G18108分。G3发射机的G1039G16213G1328用是G4448成有用的G1314频信G2507对G20652频信G2507的调制，G4570其G2476为在G7588一G1022中G5527频率G990G1867有一G4462带G4497、G17878合通G17819G3837线发射出G2447的电G11925波。G3调幅发射机通常G11013G1039G6403G13435、G13543G1926G13435、G1505频G13435、中间G6930G3835G13435、G6403幅调制、G19911频G6930G3835和输出G13605G13488G13464成。G7693据设计G16213G8726，G17745波频率G73G32G20G19G48G43G93G3，G1039G6403G13435G18331用G16211G2214G6403G14645电路，输出的G17745波的频率G2499以G11464接G9397G17287G16213G8726，G993需G16213G1505频器。系统原理G3282如G3282G21G17G20所示G3A188A189A190A191A192A193A194A195A196A197A198A199A200A201A202A203A204A205A18822工作原理及说明G3282G21G20中，G2520G13464成G18108分的的G1328用如G991G3G6403G14645G13435产生频率为G25G48G43G93的G17745波信G2507。G3G13543G1926G13435G4570晶体G6403G14645G13435与调制G13435隔离，减小调制G13435对晶体G6403G14645G13435的影响。G3G19911频G6930G3835G13435G4570话筒信G2507电压G6930G3835到调制G13435所需的调制电压。G3功G6930以及调幅G13435增G3835G17745波输出功率，G4570话G19911信G2507调制到G17745波G990，产生已调波。G3输出G13605G13488G13435对前G13435送来的信G2507进行功率G6930G3835，通G17819G3837线G4570已调G20652频G17745波电流以电G11925毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA2063A207A20817A2074/10/2012波的形式发射到空间。G3第三章各部分的具体设计及分析31主振级G1039G6403G13435是调幅发射机的核G5527G18108件，G1039G16213用来产生一G1022频率G12295G4462、幅G5242较G3835、波形G3845G11507小的G20652频正弦波信G2507G1328为G17745波信G2507。G20652频电G4388线路所G16764G16782的工G1328频率是几百千赫到几百兆赫，而课程设计所设计的G7380G20652频率受到实验条件的限制，一G14336选在3G19兆赫以G991。G3G1039G6403器就是G20652频G6403G14645器，G7693据G17745波频率的G20652G1314，频率G12295G4462G5242来确G4462电路型式。该电路通常G18331用晶体管LC正弦波G6403G14645器。常用的正弦波G6403G14645器G2265G6336电容G989点式G6403G14645器即克拉泼G6403G14645器、G16211G2214G6403G14645器。G3本G13435是用来产生G25G48G43G93左右的G20652频G6403G14645G17745波信G2507，G11013于整G1022发射机的频率G12295G4462G5242G11013G1039G6403G13435G1927G4462，因G8504G16213G8726G1039G6403G13435有较G20652的频率G12295G4462G5242，同时也G16213有一G4462的G6403G14645功率，其输出波形G3845G11507较小。为G8504，这里我G18331用G16211G2214G6403G14645电路，G2499以G9397G17287G16213G8726，电路G3282如G32823G20所示。如G3282G16211G2214G6403G14645器电路所示RA209RA210RA211G6564供偏置电压使G989G7509管工G1328在G6930G3835区。G3毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA2064A207A20817A2074/10/2012G3A188A212A190A191A213A214A215G332缓冲级为了减少G2530G13435对G1039G6403G13435G6403G14645电路G6403G14645频率的影响，G18331用G13543G1926G13435。G1039G6403G13435与G13543G1926G13435联调时会出现G13543G1926G13435输出电压明显减小或波形G3845G11507的情况，G2499通G17819增G3835G13543G1926G13435的射G7509电阻R8来G6564G20652G13543G1926输入G13435输入阻抗，也G2499通G17819减小CG25，即减小G1039G6403G13435与G13543G1926G13435的耦合来实现，同时负G17745R9也会对G13543G1926的输出波形也有很G3835影响。电路G3282如G32823G21所示。G3毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA2065A207A20817A2074/10/2012G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3A188A212A190A189A216A217A21533放大级无线通信中信G2507传输的距离G1927G4462于发射机的功率，因G8504发射机的功率G16213G8726尽G2499能的G3835，整体G6940率G16213尽G2499能地G20652，G1039G16213G1927G4462于末G13435功G6930的G6940率，故G6930G3835G13435一G14336G18331用丙类或丁类G6930G3835器。故电路G3282如G328233所示。G3G3A188A212A190A212A218A219A215G3毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA2066A207A20817A2074/10/201234AM调制电路G3AG48调制电路是为了实现调幅，输出G13605路功G6930G13435工G1328在丙类工G1328状态，故输出波形G993G2499避免产生了G3845G11507，为了滤除谐波，输出G13605G13488应有滤波性能。调幅是使G20652频G17745波信G2507的G6403幅随调制信G2507的瞬时G2476化而G2476化。也就是说，通G17819用调制信G2507来改G2476G20652频信G2507的幅G5242G3835小，使得调制信G2507的信息G2265含入G20652频信G2507之中，通G17819G3837线把G20652频信G2507发射出G2447。调幅器G2499分为G20652电平调幅和G1314电平调幅G3835功率广播和通信多G18331用G20652电平调平，这种调幅机输出功率G3835、G6940率G20652；G17745波电话机和G2520种电G4388仪器多G18331用G1314电平调幅，它们对输出功率和G6940率G16213G8726G993G20652，G2499以选用调幅特性较G3921的电路中。常见的调幅方法G1039G16213有乘法器调幅、开关型调幅电路、晶体管调幅电路，其中晶体管调幅又分为G3534G7509调幅、集电G7509调幅。本课程设计G18331用二G7509管平衡电路进行调幅，二G7509管平衡电路也是G7380简单的调制电路并且本设计对输出功率G16213G8726G993G20652。G19911频信G2507和G17745波信G2507分别通G17819G2476压器TG20、T3输入到调制电路，然G2530经二G7509管进行调制，G7380G2530经LC谐G6403回路输出调制结果。电路G3282如G328234所示。G3G3G3G3G3A188A212A190A220A221A222A195A223A224A22535音频放大本课程设计中，G19911频信G2507用如G32823G24所示的电压G9316代替，G18331用33G244BG48G17828算G6930G3835器进行功率G6930G3835。G3毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA2067A207A20817A2074/10/2012G3A188A212A190A226A227A228A218A219A224A225第四章电路仿真与分析41参数选择411振荡级的计算已G11705条件VCCG32G20G21V，G73OG32G25G48G43G93，选择的晶体管型G2507是3DG42G20G21BG708G1235G11507是实选与其G11468G17829的D4G21CG20G21G709，其G6930G3835G1505数G163G32G24G19，G44A229A230G323G80A，VA229A231A230G32G25VG15VA231A230G32G19G17G21VA229A229G17G1393据电路计算G3R3G32G3G11VA229A231A230G3VA231A230G12G18G3G44A229A230G32G11G20G21G25G19G17G21G104G20G21G12VG183G104310G80AG32G20G17G21G46A232G15G3G3R4G32VA231A230G18G44A229A230G32G19G17G21G104G20G21VG183G104310G80AG328G19G19G161G17G3G44A233A230G32G44A229A230G18G163G323G80AG18G24G19G32G19G17G19G25G3G80AG15G3G3RG20G32VA233A230G18G20G19G44A233A230G32G11VA231A230G14G19G17G26G12VG18G20G19G104G19G17G19G25G104310G80AG32G24G17G20G46G161G15G3RG21G32VA229A229VA233A230G18G20G19G44A233A230G32G11G20G213G17G20G12VG18G19G17G25G104310G80AG32G20G24G46G161G15G3因为G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G34331211114CCCCCCCG258G258G258G258G258G2584G17G20G3毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA2348A235A23617A2354/10/2012且G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G34321210CCLLCFPIPIG3G3G3G3G3G3G3G3G3G3G3G258G258G258G258G258G2584G17G21G3CG24为G7061路电容，G2474CG24G3233G3G81G41G3G15又12CCG993能G3838小，RG83G2476G3835，G6403幅增G3835，波形受限，会增G2164输出波形的G20652G8437谐波，12CCG3838G3835，又G993能G4448G1852G15929G1619G6403G14645电路G6451G13803，而G1584G6403，故G247412CCG32G21。CG20G323G19G19G3G83G41G3G15CG21G32G25G21G19G3G83G41。G3故有G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3202143FLCCPIG321610037G3G3G3G258G258G258G258G258G2584G173G3G2474LG20G328G173G43G15G3CG21G32G24G19G3G83G41G3，G2029G2499G2476电容应G2474G21G193G25G19G3G83G41G3。G3412缓冲级的计算G1039G6403G13435与G13543G1926G13435联调时会出现G13543G1926G13435输出电压明显减小或波形G3845G11507的情况，G2499通G17819增G3835G13543G1926G13435的射G7509电阻R8来G6564G20652G13543G1926输入G13435输入阻抗，也G2499通G17819减小CG25，即减小G1039G6403G13435与G13543G1926G13435的耦合来实现，同时负G17745R9也会对G13543G1926的输出波形也有很G3835影响。G3G11013于射G13435输出器G1867有输入阻抗G20652，输出阻抗G1314，电压G6930G3835G1505数G17829G1296等于G20，晶体管的G19757态工G1328点应G1313于G1144流负G17745线的中点，G2474VA237A238A239G3G32VA237A237G18G21G15G3G44A237A239G32G113G20G19G80AG12，G2029G2474VA237A238A239G3G32G25VG15G3G44A237A239G324G80AG15G3选晶体管D4G21CG20G21，G163G32G25G19所以有G3RG26G14R8G32VA237A238A239G18G44A237A239G32G25VG18G24G104310G80AG32G20G17G24G46A240A241G2474RG26G32G20G46A240电阻，R8G32G20G46A240电G1313器。G3RG24G32VA242A239G18G20G19G44A242A239G32G11VA238A239G14G19G17G26G12VG18G20G19G104G19G17G19G25G104310G80AG32G20G19G46G161G15G3RG25G32VA237A237VA242A239G18G20G19G44A242A239G32G11G20G213G17G20G12VG18G19G17G25G104310G80AG32G26G179G46G161，G2474RG25G32RG24G32G20G19G46G161G3413放大级电路的计算已G11705条件G3CCVG32G20G21V，G73OG32G25G48G43G93，输出调幅波功率OPG19G17G21G58，G32060，0050AMG3MAXCPG3221AOMPG32250120G32G19G17G1989G58G3选晶体管3DG42G20G21G708G1235G11507是选用G48G45G58G20G25G19G20G21G709，VUCES60G15MWPCM700G15MAICM300G15G16330，MHZFT150，为了G14731得较G20652的输出G6940率，选丙类功率G6930G3835器在G17745波点于G1032G11040状态，G32060，G2499G11705G3谐G6403回路G7380G1351负G17745电阻PR为G3PRMAX22CCCPVG3208902122G32G2643G3G15G3G3得集电G7509G3534波电流IMC1G6403幅为G3毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA2439A244A24517A2444/10/2012IMC1G32PCRPMAX2G3274308902G32G20G24G1748G80A，G3得集电G7509电流G14045G1926G7380G3835G1552ICM及其G6915流分G18339ICO为G3ICMG3211IMCG3240015480G3238G17G259G25G80AG15G3G3ICOG320ICMG32G19G17G21G2038G17G259G25G328G17G20G21G25G80A，G3得电G9316供G13485的G11464流功率为G3PDG32ICOG3CCVG32G19G17G19G198G20G21G2512G329G26G17G24G80G58，G3得集电G7509G13803G6967功率为G3PCG32PDPOG32G19G178G218G19G17G26G204G328G80G58，G3设G6930G3835G13435增G11422PAG32G203G71BG708G21G19G1505G709，输入功率为G3PIAPP0G324G174G24G80G58G15G3得G6930G3835G13435的输入阻抗BBIRRG32G21G24G3得本G13435输入电压的G6403幅VPRVIII4702G3G3计算谐G6403回路及耦合回路的G2454数，输出G2476压器线G3292G2289数G8616为G325023PLRRNNG708设负G17745LRG709，G24743NG32G21，2NG3G32G24G17G14521G2474集电G7509并联谐G6403回路的电容CG32G25G19G83G41，得回路电G5875为G3G3LG32CF2021PIG32G20G21G43，G3G3G247411CG32G19G17G19G20G41，2LG324G26G43，12CG32G19G17G19G20G41G15G313CG32G19G17G19G20G41G15G310CG32G19G17G19G20G41G15G33LG32G21G17G21G43G3CG328CG149CG32G25G19G83G41G15G24748CG323G19G3G83G41，9CG32G33G193G25G19G83G41。G3414AM调制电路的计算G3滤波回路的计算G3有G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3LCFPI21G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G258G258G258G258G258G2584G174G3毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA24610A247A24817A2474/10/2012故G3LCG322021FPIG321510421G3G3G3G3G3G3G3G3G3G3所以G2474CG20G323G193G25G19G83G41，LG20G32G20G193G19G43G17G3415音频级电路的计算G3本G13435电路计算G2454G10043G16886G14270G13666G17G3电G4388线路设计G103实验G103G8991试G11G12544G989G10268G12G12544G24G17G26G14422设计G1042G1375。G342仿真结果,G1235G11507G3282如G32824G20所示G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3A249A250A251A252G1235G11507G3282如G32824G21所示G3G3A249A250A251A253G3G1235G11507G3282如G328243所示G3毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA25411A255A317A2554/10/2012G3A249A250A251A7G3G1235G11507G3282如G328244所示G3G3A249A250A251A250G3G1235G11507G3282如G32824G24所示G3毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA25412A255A317A2554/10/2012G3A249A250A251A8G343仿真调试从G1039G6403G13435出发，一G8505一G8505进行调试，G11705G17959G8611一G18108G3534本G12538合G16213G8726的情况G991G1889进行G991一G8505G13435联，调试的G2530G7380G13468G8821有得到调幅波，G2499能是G11013于G19911频信G2507G5190G6212G3838，并且在G1235G11507软件中所用的G1815件与计算所G16213G8726的G993G9397G17287，G2494是接G17829，G2476压器G2289数也G993G2499G2476。G3整机调试故G19568分析G3G1039G6403G13435与G13543G1926G13435联调时G13543G1926G13435输出电压明显减小或波形G3845G11507的情况。产生的G1039G16213原因是G13543G1926G13435的输入阻抗G993G3827G3835，使G1039G6403G13435负G17745G2164G18337。这G2499通G17819增G3835G13543G1926G13435的射G7509电阻R8来G6564G20652G13543G1926输入G13435输入阻抗，也G2499通G17819减小CG25，即减小G1039G6403G13435与G13543G1926G13435的耦合来实现。G3本机G6403G14645G13435、G13543G1926G13435、话G16833G6930G3835G13435以及调制G13435联调时，G5460G5460会出现G17819调幅现G16949。产生的原因G2499能是经射G13435G17331随器输出的本G6403电压VA4偏小或G13785是话G19911G6930G3835G13435输出的调制电压VA5G17819G3835。调整话G19911G6930G3835G13435增G11422，以G9397G17287调幅G5242MG68G32G24G19G8的G6228G7427G6363G7643G16213G8726。G16213G13796G5527的调试，G3G3G3G3G3G3G3G3毕业设计精品小功率调幅发射系统的设计与安装及MULTISIM软件仿真DOCA25413A255A317A2554/10/2012G3G3G3G3G3G3G3G3G3G3G3参考文献G62G20G64G3G7373G6177开G17G3G20652频电G4388线路原理与实G17353G17G3G9258G2347中G2347G3835学出G10268G12050，G21G19G20G19G3G62G21G64G3G5259G1821G2338G17G3电G4388G6228G7427G3534G11796G103G8181G6323G18108分G11G12544G1128G10268G12G17G3G2283G1152G20652等G6957G13958出G10268G12050，G3G21G19G19G25G3G3G623G64G3G16886G14270G13666G17G3电G4388线路设计G103实验G103G8991试G11G12544G989G10268G12G17G3G8506G8733G2338中G12197G6228G3835学出G10268