DocumentCode :
3546782
Title :
A new cascaded modified CIC-cosine decimation filter
Author :
Dolecek, Gordana Jovanovic ; Carmona, Javier Diaz
Author_Institution :
Dept. of Electron., INAOE, Puebla, Mexico
fYear :
2005
fDate :
23-26 May 2005
Firstpage :
3733
Abstract :
This paper presents a new modified multistage CIC-cosine decimation filter. The original CIC filter is replaced by a multistage structure, where each stage is a cascade of simple CIC filters. The number of cascaded filters can be different for different stages. The first section is realized in nonrecursive form. Using the polyphase decomposition, the subfilters of the first section can be operated at a lower rate which depends on the down-sampling factor of the first section. The magnitude response of this filter is improved by using cosine prefilters which can also be moved to a lower rate. The resulting structure does not have any filtering at the high input rate and has an improved magnitude characteristic.
Keywords :
cascade networks; comb filters; digital filters; integrating circuits; sampling methods; cascaded decimation filter; cosine prefilters; down-sampling factor; magnitude characteristic; modified CIC-cosine filter; multistage decimation filter; polyphase decomposition; subfilters; Filtering; Filters; Frequency; Passband; Power dissipation; Sampling methods; Transfer functions; CIC filter; Cosine prefilter; multistage structure; polyphase decomposition;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
Type :
conf
DOI :
10.1109/ISCAS.2005.1465441
Filename :
1465441
Link To Document :
بازگشت