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Computación y Sistemas
versión On-line ISSN 2007-9737versión impresa ISSN 1405-5546
Resumen
JOVANOVIC DOLECEK, Gordana y MITRA, Sanjit K.. Novel Two-Stage Comb Decimator. Comp. y Sist. [online]. 2012, vol.16, n.4, pp.481-489. ISSN 2007-9737.
A simple method for the design of a multiplier-less comb-based decimation filter is presented. The filter compensates the comb passband droop, and has the desired attenuation in the first folding band. The proposed structure has two decimation stages, both with simpler comb filters. The desired attenuation in the first folding band is achieved by an appropriate number of cascaded combs in the second stage. A simple compensation filter, working at a low output rate, provides the desired compensation in the pass band. The choice of the design parameters is presented along with a comparison of the proposed method to some other existing design methods.
Palabras llave : Comb filter; decimation; folding bands; compensation.