贺州学院课程设计报告<<高频电子线路>>课程设计报告题目：基于S9018的调频发射机设计专业：__电子信息工程________年级：____2010级___________学号：___***************_______学生姓名：____****____________联系电话：____*************________指导老师：_____李立礼____________完成日期：2011年12月27日贺州学院课程设计报告基于S9018的调频发射机设计摘要本文介绍了基于S9018调频发射机的制作方法及其工作原理。利用S9018三极管，电阻电容组成的LC振荡电路等制作一个高性能调频发射机，它的原理在于话筒将话音转为音频信号，然后音频信号对载波进行调制，产生调频波，通过天线向外发射调频电磁波。此设计可实现发射距离大于50米，发射频率在87.7-107.9MHz的基本性能。经测试，系统达到此次课程设计的基本要求，具有电路简单，抗干扰强，发射声音清晰的优点。关键词：调频发射机；S9018；调频波ABSTRACTKeyWords:ThispaperintroducesmakingmethodofFMtransmitteranditsworkingprinciple.UsingS9018triodeandLCoscillatingcircuitwhichconsistsofresistanceandcapacitancemakeahigh-performanceFMtransmitter,itsprincipleisturningaudiosignaltovoicesignal,andaudiosignalmodulatesforcarrier,producesFMwave,launchesFMelectromagneticwavesthroughtheantennatooutside.Thisdesigncanrealizelaunchingmorethan30metersandtransmitfrequency87.7-107.9MHzinthebasicperformance.Aftertesting,thesystemcanachievethebasicrequirementsofthecoursedesign,withthesimplecircuit,anti-interferencestrongadvantages.KeyWords:FMtransmitter;S9018;FMradiowave贺州学院课程设计报告目录摘要..................................................................................................................................2ABSTRACT......................................................................................................................21设计要求及方案选择...................................................................................................41.1设计要求....................................................................................................................41.2方案选择....................................................................................................................42理论分析与设计..........................................................................................................52.1设计原理...................................................................................................................53电路设计...........................................................................................................................63.1各模块电路的设计...................................................................................................63.1.1振荡电路的设计.....................................................63.1.2缓冲级电路的设计...................................................73.1.3功率输出级电路.....................................................73.2总原理图...................................................................................................................83.3软件仿真...................................................................................................................84电路焊接与调试.............................................................................................................94.1电路焊接....................................................................................................................94.2调试所用的基本仪器清单............................................................
