无限增益多路反馈带通滤波器的研究  

Study on the Infinite Gain Multiple Feedback Band-pass Filter

作　　者：熊俊俏[1] 戴璐平[1] 刘海英[1] 

机构地区：[1]武汉工程大学电气信息学院,湖北武汉430205

出　　处：《电气电子教学学报》2013年第3期84-86,共3页Journal of Electrical and Electronic Education

摘　　要：本文通过对无限增益多路反馈滤波器的电路分析,针对两种特殊情形,提出了一种简单的元件参数选取新方法;同时,通过具体的级联滤波器实验研究,分析了该滤波器动态范围下降的原因,提出了改善的方法,并进一步归纳了滤波器级联设计中的指标分配原则。本文介绍的方法和原则,对同类滤波器的设计具有一定的参考价值。According to the theoretical analysis of infinite gain multiple feedback band-pass（MFB） filter circuit,a new simple method how to choose component is proposed for two special cases in this paper.At the same time,through the experimental study on the specific cascaded filter dynamic range,the reason for its decline is analyzed,and the methods how to its expansion is put forward too.Further,the criteria for allocation of its indicators is summarized for cascaded filter in this paper.All these have a certain reference value for the similar filter design.

关 键 词：MFB 反馈滤波器 信噪比 

分 类 号：TN713.8[电子电信—电路与系统]