利用有源低通滤波器电路探讨抽样定理与信号恢复

摘要

以有源低通滤波器为例,探讨抽样定理与信号恢复原理,深入了解高职高专《信号与系统》的实验教学内容,使学生能够形象直观地观察离散信号频谱,了解其频谱特点.文章通过设计模拟信号源及时针信号源模块、模拟滤波器及抽样定理模块,引导学生全面具体分析抽样定理与信号恢复原理.%Taking Active Low-pass Filter for an example, the paper investigates the sampling theorem and signal recovery principle, and understands the experimental teaching contents deeply, so that students can visually observe the discrete signal spectrum, and understand the features of its spectrum. Article through the design of the analogue signal sources, the clock signal source modules,the analog filter and the sampling theorem modules to guide students to specific and comprehensive analysis of the sampling theorem and signal recovery principle.