用Protel实现仿真-PCB一体化设计

摘要

复杂的电路通常借助于仿真软件或电路实验进行方案设计，用电子CAD软件绘制印刷电路板.由于两种软件由不同公司开发，用于仿真的原理图无法直接用于PCB的生成，从而降低了效率.文中提出用最新的Prote199实现测频电路的原理图-仿真-PCB一体化设计，先绘制电路原理图，再通过仿真软件进行修改、优化，然后直接用该原理图通过自动布线技术完成PCB设计.由于三者基于同一平台，无缝集成，降低了设计成本，提高了开发效率.该方法特别适用于复杂的数字-模拟混合电路设计.%A complicated circuit is usually designed with a simulation software or on the basis of experiments,and its printed circuit board is drawn with a CAD software.The schematic circuit for the simulation should be redrawn for the PCB design because of the compatibility of the two tools.The method of integrated simulation-PCB design for frequency measurement circuit with Protel99 is proposed,with which schematic circuit is firstly designed,then optimized by simulation,and then routed automatically.The seamlessly integrated design technique cuts the cost of design and improves the efficiency of development.It can also be applied to other designs of complicated mixed analog-digital circuits.