高频课程设计-小功率调幅发射系统.doc

通信电子线路课程设计说明书 小功率调幅发射系统 系 、 部： 电气与信息工程系 学生姓名： 指导教师： 职称 讲师 专 业： 电子信息工程 班 级： 电子班 完成时间： 2011年12月12日 摘 要 高频电子线路课程设计是继《通信电子线路》理论学习和实验教学之后又一重要的实践性教学环节。它的任务是在学生掌握和具备电子技术基础知识与单元电路的设计能力之后，让学生综合运用高频电子线路知识，进行实际高频系统的设计、安装和调测，利用multisim等相关软件进行电路设计，提高综合应用知识的能力、分析解决问题的能力和电子技术实践技能，让学生了解高频电子通信技术在工业生产领域的应用现状和发展趋势，为今后从事电子技术领域的工程设计打好基础。 调幅发射机设计是运用比较早的一种无线电发送设备。现在，基本上不用调幅发射机设计了，调幅发射机设计是有高频和低频两部分组成的。高频部分由高频振荡器、高频放大器和调制器组成。高频振荡器是用来产生频率稳定的高频载波信号。高频放大器是将高频振荡载波信号放大到足够大得强度。高频功率放大器及调制器是将低频放大器输出的信号调制到载波上，同时完成末级功放。 关键词：通信电子线路； multisim；振荡器；调幅 ABSTRACT High frequency electronic circuit course design is the communication electronic circuits theoretical study and experimental teaching is an important link of practice teaching. It is the task of the students master and have basic knowledge of electronic technology and unit circuit design ability, let students in the integrated use of high frequency electronic circuit knowledge, Practical RF system design, installation and debugging, the use of Multisim and other related software for circuit design, improve the comprehensive ability of the applied knowledge, ability to analyze and solve problems and electronic technology practice skill, lets the student understand the high-frequency electronic communications technology in the industrial production and application present situation and the trend of development, for the future of electronic technology in the field of engineering design to lay a good foundation. Am transmitter design is the use of the earlier one of radio transmission equipment. Now, basically not am transmitter design, AM transmitter design is the high frequency and low frequency in two parts. High frequency part by the high frequency oscillator, high-frequency amplifier and modulator. High frequency oscillator is used to generate the frequency stability of the high frequency carrier signal. High frequen