电子线路cad课程设计---信号源的设计与制作.doc

电子线路CAD 课程设计 题 目： 信号源的设计与制作 院（系、部）： 学 生 姓 名： 指 导 教 师： 目录 摘要··········································3 1、课程设计的目的及要求···························3 1.1 设计目的···································3 1.2 设计要求···································3 2、函数发生器基本原理·····························3 2.1 原理框图···································4 2.2 函数发生器的总方案·························4 3、各组成部分的工作原理···························4 3.1 方波发生电路的工作原理·····················5 3.2 方波---三角波转换电路的工作原理············5 3.3 三角波---正弦波转换电路的工作原理··········6 4、Protel原理图绘制································7 4.1设置画图环境································7 4.2 定位元件和加载元件库·······················7 4.3 放置元件并排版······························7 4.4 电路连接····································8 4.5 电路及电气规则检查··························8 5、PCB板的制作·····································8 5.1 生成网络表··································8 5.2 创建PCB文件································9 5.3 导入网络报表至PCB··························11 5.4元件的布局·································11 5.5自动布线····································12 6、元件清单······································13 7、仿真··········································13 7.1 产生仿真波形·······························14 7.2 仿真结果与分析····························14 8、心得体会······································15 9、参考文献············································16 摘要 Protel是protel公司在80年代末推出的软件，率先将EDA环境引入到windows环境中。在电子行业的CAD软件中，他当之无愧的排在众多的EDA软件的前面。是电子设计者的首选软件，它具有原理图设计、印制电路板（PCB）、设计层次原理图设计、报表制作、电路仿真以及逻辑器件的设计等功能，国内已经很流行，许多公司都要用它。 从2000年成功推出protel99se后，2001年protel公司更名为Altium公司并相继推出ProtelDXP和protel2004。2006年初，公司推出了Protel系列的必威体育精装版高端版本Altium Designer6。本版全面的板级全方位电子设计系统。Altium Designer 是业界首例将设计流程、集成化PCB的设计、可编程逻辑器件设计和基于处理器设计的嵌入式软件开发功能整合在一起的产品，一种同时进行PCB和FPGA设计以及嵌入式设计的解决方案，具有将设计方案从概念转变为最终成品所需的全部功能。 本次protel课程设计实现函数信号发生器的原理图绘制，PCB版图制作，以及电路的仿真。运行运放构成的比较器和积分器实现矩形波和三角波的输出，再经差分放大产生正余弦波形。 关键词：protel99se 信号源 仿真 1 课程设计的目的及要求 1.1 设计目的 1、对电路、模电、数电等基础知识的掌握，对Protel 99se软件的熟练使用 2、培养学生综合设计和实践能力。 1.2 设计要求 1、