电讯技术Issue(2)：176-182,7.DOI:10.3969/j.issn.1001-893x.2016.02.012
基于椭圆球面波函数的数字带通滤波器设计
Design of Digital Bandpass Filters Based on Prolate Spheroidal Wave Function
摘要
Abstract
In order to design Finite Impulse Response( FIR) digital bandpass filters with excellent frequen-cy spectrum,the superiority of prolate spheroidal wave functions( PSWF) to window function is analyzed according to the properties and indexes of window function,PSWFs are solved based on state transition ma-trix approximation,and zero-order baseband is used as window function. On this basis,a method for desig-ning digital bandpass filter based on PSWF is presented. Theoretical analysis and simulation show that PSWF digital filter of bandpass possesses low design complexities,and it owns superiority more than 7 dB in sidelobe fading compared with Kaiser filter and Blackman filter, while the passband ripple and transition band are equal.关键词
数字带通滤波器设计/椭圆球面波函数/窗函数/状态转移矩阵/旁瓣衰减Key words
digital bandpass filter design/prolate spheroidal wave functions/windows function/state transi-tion matrix/sidelobe fading分类
信息技术与安全科学引用本文复制引用
刘晓,王红星,刘传辉,康家方..基于椭圆球面波函数的数字带通滤波器设计[J].电讯技术,2016,(2):176-182,7.基金项目
山东省“泰山学者”建设工程专项(ts20081130)Foundation Item:Project Supported by“Taishan Scholar” Special Foundation of Shandong Province(ts20081130) （ts20081130）
