On Passband and Stopband Cascaded-Integrator-Comb Improvements Using a Second Order IIR Filter
Abstract: This paper proposes
an efficient second order IIR filter which considerably improves the passband
as well as the stopband of the cascaded-integrator-comb (CIC) filter. Using the
polyphase decomposition of the proposed filter, all filtering can be moved to a
lower rate, which is D times less than the high input rate, where D is the
decimation factor. The overall phase response of the compensated CIC is
approximately linear in the passband. The design parameters are the number of
cascaded CIC filter N, the decimator factor D, the passband frequency wp, and a
weighted parameter a.
Author: Alfonso Fernandez-Vazquez,
Gordana Jovanovic Dolecek
Journal Code: jptkomputergg120025
