Efficient Polyphase Decomposition of Comb Decimation Filters in Analog-to-digital Converters
نویسنده
چکیده
H. Aboushady, Y. Dumonteix, M. M. Louërat and H. Mehrez Université Paris VI, Laboratoire LIP6/ASIM 4, Place Jussieu, 75252 Paris Cedex 05, France Email: [email protected] , [email protected] Abstract—A power efficient multi-rate multi-stage Comb decimation filter for mono-bit and multi-bit A/D converters is presented. Polyphase decomposition in all stages, with high decimation factor in the first stage, is used to significantly reduce the sampling frequency of the Comb filter. Several implementations indicate that proper choice of the first stage decimation factor can considerably improve power consumption, area and maximum sampling frequency. In multibit A/Ds, this optimum first stage decimation factor is function of the input wordlength.
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Low power Comb Decimation Filter Using Polyphase Decomposition For Mono-Bit Analog-to-Digital Converters
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