CAJ | 학술논문

提出了一种基于电流反馈放大器(CFA)的n阶电压模式多环反馈(multiple-loop feedback,简称MF)低通滤波器的系统设计方法,推导了系统的设计公式,利用该方法可导出n阶不同结构的低通滤波器,所产生的滤波器由n个CFA、n个电容、n个电阻构成.以三阶Butterworth低通滤波器为例阐述了设计过程,并用pspice进行仿真分析,设计和仿真结果表明,系统设计理论是正确的,设计方法是可行的.
제출료일충기우전류반궤방대기(CFA)적n계전압모식다배반궤(multiple-loop feedback,간칭MF)저통려파기적계통설계방법,추도료계통적설계공식,이용해방법가도출n계불동결구적저통려파기,소산생적려파기유n개CFA、n개전용、n개전조구성.이삼계Butterworth저통려파기위례천술료설계과정,병용pspice진행방진분석,설계화방진결과표명,계통설계이론시정학적,설계방법시가행적.
A systematic design method for nth-order voltage-mode multiple-loop feedback (MF) low-pass filter based on CFA is presented. The systematic design formula derivation is performed firstly. The nth-order low-pass filters with different structure are obtained by this method, which include n CFAs, n capacitors and n resistances. As an example, a new third-order Butterworth low-pass filter is designed by the systematic design method and simulated in PSPICE. The simulation results show that our systematic design method is feasible.