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This paper presents a two-stage comb decimation filter for odd decimation factors, which are factors of three. The first stage is a comb decimated by M/3, (M is the overall decimation factor), while the second stage is a comb, decimated by three. The aliasing rejection is improved by cascading a simple multiplierless filter in the second stage. As a consequence, the aliasing rejection is improved...
This paper presents a simple multiplierless two-stage comb decimation filter. The filter exhibits an improved magnitude characteristic in both pass band and comb folding bands. The attenuation in folding bands is increased by inserting additional zeros into comb folding bands, which are provided by two additional combs at the second stage. The comb pass band droop is decreased by cascading a simple...
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