基于全相位幅频特性补偿的FIR滤波器设计  

FIR filter design based on all-phase amplitude-frequency characteristic compensation

作　　者：黄翔东[1] 王兆华[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《电路与系统学报》2008年第2期1-5,共5页Journal of Circuits and Systems

基　　金：教育部高校博士点新教师专项科研基金资助项目(20070056105);国家自然科学基金与民航联合基金资助项目(60776815)

摘　　要：提出一种基于全相位幅频特性补偿的FIR滤波器设计算法,此方法可通过设置频移参数λ来控制边界频率。该方法采用了偶对称的频率采样模式,对两个子滤波器作了反向的相移处理,另外还构造了一全相位单窗滤波器用于幅频特性补偿,再将此补偿滤波器和各子滤波器进行组合即可形成各种低通、高通、带通、陷波类型的滤波器。A filter design algorithm based on all-phase amplitude-frequency characteristic compensation is proposed, which can control filter＇s critical frequency by setting the frequency shift parameter ＇λ＇. Based on an even symmetric frequency sampling mode, this method exerts inverse phase-shifts on two sub-filters. In addition, an all-phase filter with single window which can compensate amplitude-frequency characteristic is constructed. By simply combining this compensatory filters and the sub-filters, all kinds of low-pass ,high-pass, band-pass and notch filter can be formed.

关 键 词：滤波器设计 全相位 幅频特性补偿 边界频率 相移 

分 类 号：TN911.72[电子电信—通信与信息系统]