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课程设计任务书学生姓名：专业班级：通信0704指导教师：工作单位：信息工程学院题目:通信电子线路综合设计课程设计目的：①较全面了解常用的数据分析与处理原理及方法；②能够运用所学知识进行初步电路的设计；③掌握基本的文献检索和文献阅读的方法；④提高正确地撰写论文的基本能力。课程设计内容和要求1.高频小信号调谐放大器的电路设计2.LC振荡器的设计；3.高频谐振功率放大器电路设计。初始条件：①电路板及元件，参数；②通信原理，高频，电路等基础知识。时间安排：课程设计时间为5天。（1）方案设计，时间1天；（2）软件设计，时间2天；（3）系统调试，时间1天；（4）答辩，时间1天。指导教师签名：2010年月日系主任（或责任教师）签名：年月目录目录..................................................................................................................................................1摘要..................................................................................................................................................IAbstract............................................................................................................................................II1高频小信号调谐放大器的电路设计............................................................................................11.1主要技术指标：.......................................................................................................11.2给定条件....................................................................................................................11.3设计过程....................................................................................................................21.4单调谐高频小信号放大器电路调试.....................................................................52LC三点式反馈振荡器设计与制作..............................................................................................62.1电容三点式振荡器原理工作原理分析....................................................................62.2主要设计技术性能指标.........................................................................................102.3基本设计条件.........................................................................................................102.4电路结构.................................................................................................................102.5静态工作电流的确定.............................................................................................102.6确定主振回路元器件.............................................................................................112.7电路调试...............................................................................................................123高频谐振功率放大器电路设计与制作.....................................................................................133.1设计要求..................................................................................................................133.2确定功放的工作状态..............................................................................................133.3基极偏置电路计算.................................................................................................143.4计算谐振回路与耦合线圈的参数..........................................................................143.5电源去耦滤波元件选择..........................................................................................153.6电路调试...............................................................................................................154心得体会.....................................................................................................................................165参考文献.....................................................................................................................................17本科生课程设计成绩评定表.........................................................................................................18摘要高频调谐放大器广泛应用于通信系统和其它无线电系统中，特别是在发射机的接收端，从天线上感应的信号是非常微弱的，这就需要用放大器将其放大。高频信号放大器理论非常简单，但实际制作却非常困难。其中最容易出现问题是自激震荡，同时频率选择和各级建阻抗匹配也恶化你难实现。LC振荡电路主要用来产生高频正弦信号，一般在lMHz以上。LC和RC振荡电路产生正弦振荡的原理基本相同，它们在电路组成方面的主要区别是，RC振荡电路的选频网络由电阻和电容组成，而LC振荡电路的选频网络则由电感和电容组成。而高频谐振功率放大器主要是实现电源功率到高频信号功率转换的电路。本次课程设计主要围绕高频调谐放大器，LC振荡电路和高频谐振功率放大器的设计和分析，进一步学习和熟悉他们关键词：高频；通信系统；LC振荡电路；放大器AbstractHigh-frequencytunedamplifieriswidelyusedincommunicationssystemsandotherradiosystems,especiallyinthetransmitterofthereceivingend,fromtheantennaonthesensorsignalisveryweak,whichneedtobelargeramplifier.High-frequencysignalamplifiertheoryisverysimple,buttheactualproductionwasverydifficult.Oneofthemostpronetoproblemsistheself-excitedvibration,whilefrequencyselectiveimpedancematchinghasalsodeterioratedatalllevelstobuildyoufrombeingrealized.LCoscillatorcircuitismainlyusedtogeneratehigh-frequencysinusoidalsignal,ormoregenerallylMHz.LCandRCoscillatorproducessinusoidaloscillationisbasicallythesameprinciple,theyareformedinthecircuit'smaindifferenceisthatRCoscillationcircuitselectedfrequencynetworkformedbyresistorsandcapacitors,whiletheLCoscillatorcircuitbyfrequency-selectivenetworkcomposedofinductorsandcapacitors.Thekeyistoachievehigh-frequencyresonantpoweramplifierpowersupplypowertothehigh-frequencysignalpowerconversioncircuit.Themainfocusoncurriculumdesign,high-frequencytunedamplifier,LCoscillatorcircuitsandhigh-frequencyresonantpoweramplifierdesignandanalysis,furtherstudyandbecomefamiliarwiththem.Keywords：Highfrequency;communicationsystems;LCoscillatorcircuit;Amplifier1高频小信号调谐放大器的电路设计高频小信号调谐放大电路的基本电路结构是选频放大电路，它主要由放大器与选频回路两部分构成。主要特点是放大器的负载不是纯电阻，而是由L、C组成的并联谐振回路。由于L、C并联谐振回路的阻