变容二极管调频电路课程设计

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1、目录摘要………………………………………………………………………………………1题目分析…………………………………………………………………………2系统方案论证………………………………………………………………………2.1电路设计原理………………………………………………………………………2.2电路的设计方案…………………………………………………2.3电路设计……………………………………………………………………………2.4主振电路设计原理分析……………………………………………………………2.5变容二极管直接调频电路………

2、…………………………………………………2.6调频信号分析………………………………………………………………………2.7变容二极管频率调制的原理………………………………………………………3电路工作分析………………………………………………………………………3.1谐振回路总电容……………………………………………………………………3.2调制灵敏度………………………………………………………………4.增加电路稳定度…………………………………………………………………4.1震荡回路参数LC……………………………………………………

3、……4.2温度补偿法……………………………………………………………………4.3回路电阻………………………………………………………………………4.4增加缓冲级………………………………………………………………4.5有源器件参数………………………………………………………………4.6高稳定度LC振荡电路………………………………………………………………5.电路元器件参数设置………………………………………………………………………5.1LC震荡电路直流参数设置…………………………………………………………5.2变容管调频电路参

4、数设置…………………………………………………………5.3放大电路参数设置………………………………………………………………5.4调制信号的幅度计算………………………………………………6.元器件清单…………………………………………………………………7.电路调试…………………………………………………………………8.课程答辩…………………………………………………………………9.实验心得体会…………………………………………………………………10.致谢…………………………………………………………………11.参考文献…………

5、………………………………………………………摘要Withtheincreasinguseofelectronicandcommunicationstechnologyhasprogressed,variouskindsofnewelectronicproductdevelopmentatanincreasingrate.Themoderncomputertechnologyandthemicroelectronictechnologyfurtherunionandthedevelopmentcausedtheel

6、ectroniccircuitandthecommunicationlinkappearedtwobranches.OneisthemovementtowardamorehighlyintegratedICdevelopment:whiletheotheristheuseofdiscretecomponentsandhardwaredescriptionlanguageforthenewdevicesarespeciallydesigned.TheFMbroadcasthastheresistancetoint

7、erferencestrongly,thesoundclearandsoonthemerits,hasobtainedthefastdevelopment.Thefrequencymodulationbroadcastingstation'sfrequencybandprobablyisusually200~250kHz,Itsbandwidthisamplitudemodulationbroadcastingstation'sdozensoftimes,isadvantageousfortransmitsth

8、ehighfidelitystereosoundsignal.Becausethemodulatedwavereceivesthebandwidththelimit,hasthepassbandwidthandthedisturbancecontradictioninthereceiver,thereforethetonictrainsignalingfrequencylimitsin