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An Improved Recursive and Non-recursive Comb Filter for DSP Applications

Listed author(s):
  • Teymourzadeh, Rozita
  • Othman, Masuri
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    The recursive and non-recursive comb filters are commonly used as decimators for the sigma delta modulators. This paper presents the analysis and design of low power and high speed comb filters. The comparison is made between the recursive and the non-recursive comb filters with the focus on high speed and saving power consumption. Design procedures and examples are given by using Matlab and Verilog HDL for both recursive and non-recursive comb filter with emphasis on frequency response, transfer function and register width. The implementation results show that non-recursive comb filter has capability of speeding up the circuit and reducing power compared to recursive one when the decimation ratio and filter order are high. Using Modified Carry Look-ahead Adder for summation and also apply pipelined filter structure makes it more compatible for DSP application.

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    Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 40626.

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    Date of creation: 15 May 2006
    Publication status: Published in The 6th Asian Control Conference (2006): pp. 413-417
    Handle: RePEc:pra:mprapa:40626
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