天津大学学报(英文版)
天津大學學報(英文版)
천진대학학보(영문판)
TRANSACTIONS OF TIANJIN UNIVERSITY
2000年
1期
41-45
,共5页
非等波纹特性%低通滤波器%牛顿迭代法
非等波紋特性%低通濾波器%牛頓迭代法
비등파문특성%저통려파기%우돈질대법
non-equiripple characteristics%low-pass filter%Newton it eration method
滤波器特性的非等波纹逼近方法,在对称负载情况下阶数N为奇或偶均可实现.提出一种用切比雪夫多项式构成有理分式作为滤波器的特征函数,并利用迭代分析进行非等波纹低通滤波器综合的方法 .由于这种滤波器的衰减零极点很容易确定,因而设计过程简单,便于计算机编程.算例表明这一方法具有实用价值.
濾波器特性的非等波紋逼近方法,在對稱負載情況下階數N為奇或偶均可實現.提齣一種用切比雪伕多項式構成有理分式作為濾波器的特徵函數,併利用迭代分析進行非等波紋低通濾波器綜閤的方法 .由于這種濾波器的衰減零極點很容易確定,因而設計過程簡單,便于計算機編程.算例錶明這一方法具有實用價值.
려파기특성적비등파문핍근방법,재대칭부재정황하계수N위기혹우균가실현.제출일충용절비설부다항식구성유리분식작위려파기적특정함수,병이용질대분석진행비등파문저통려파기종합적방법 .유우저충려파기적쇠감령겁점흔용역학정,인이설계과정간단,편우계산궤편정.산례표명저일방법구유실용개치.
Non-equirip ple approximation of filter characteristics can be realized either odd order or even order in the symmetric load case.This paper presents a method of synthesizi ng non-equiripple low-pass filter based on iteration analysis,in which the rat ional fraction formed of Chebyshev polynomial is used as the filter characterist ic function.This method is convenient for computer programming,because the atten uation zeros and poles of the filter can be determined easily and the synthesis procedure is simple,too.The given examples show that the method is of a practica l value in filter design.