CIC滤波器的分岔重复阻带零点

2016 IEEE International Conference on Digital Signal Processing (DSP) Pub Date : 2016-10-01 DOI:10.1109/ICDSP.2016.7868580

F. Harris, G. Jovanovic-Dolecek

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引用次数: 10

摘要

M抽头多级CIC滤波器的频率响应具有重复的零，在fs/M的倍数处形成最平坦的衰减停止带。通过对传统CIC结构的一个小变化，这些重复的零可以被分离，实际上它们可以被重新分配，形成等纹波，更宽的带宽，阻带。更宽的带宽阻带提供了通过减少级联级数来实现指定阻带宽度的选项。

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Bifurcate repeated stop-band zeros of CIC filter

The frequency response of an M-tap multistage CIC filter has repeated zeros which form maximally-flat attenuation stop bands at multiples of fs/M. By a small variation in the conventional CIC architecture, these repeated zeros can be separated, and in fact they can be redistributed, to form equal-ripple, wider bandwidth, stopbands. The wider bandwidth stopband offers the option to achieve a specified stopband width with a reduced number of cascade stages.

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来源期刊

2016 IEEE International Conference on Digital Signal Processing (DSP)

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