VLSI Implementation of Cascaded Integrator Comb Filters for DSP Applications
affiliation not provided to SSRN
July 15, 2006
4th National Technical Postgraduate Symposium, TechPos 2006. Faculty of Engineering, University of Malaya, Malaysia, pp. 54-58
The recursive comb filters or Cascaded Integrator Comb filter (CIC) are commonly used as decimators for the sigma delta modulators. This paper presents the VLSI implementation, analysis and design of high speed CIC filters which are based on a low-pass filter. These filters are used in the signal decimation which has the effect on reducing the sampling rate. It is also chosen because its attractive property of both low power and low complexity since it dose not required a multiplier. Simulink toolbox available in Matlab software which is used to simulator and Verilog HDL coding help to verify the functionality of the CIC filters. Design procedures and examples are given for CIC filter with emphasis on frequency response, transfer function and register width. The implementation results show using Modified Carry Look-ahead Adder for summation and also apply pipelined filter structure enhanced high speed and make it more compatible for DSP applications.
Number of Pages in PDF File: 5
Keywords: CIC, sigma delta, decimation, comb, recursive, truncation, MCLA
JEL Classification: F14,L,O14Accepted Paper Series
Date posted: July 16, 2012 ; Last revised: July 17, 2012
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