Closed-Form Design of CIC Compensators Based on Maximally Flat Error Criterion

Closed-Form Design of CIC Compensators Based on Maximally Flat Error Criterion

The simplest decimation filter is the cascaded-integrator-comb (CIC) filter. However, its magnitude response has a high passband droop, which is not tolerable in many applications. One technique for the reduction of the droop is the compensation by a filter called CIC compensator. This brief present...

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Veröffentlicht in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2011-12, Vol.58 (12), p.926-930
Hauptverfasser: Molnar, G., Vucic, M.
Format: Artikel
Sprache:eng
Schlagworte:
Approximation methods
Bernoulli numbers
cascaded-integrator-comb (CIC) filters
CIC compensators
Circuits
Compensators
Criteria
Design engineering
Design methodology
Errors
Exact solutions
Finite impulse response filter
finite-impulse-response (FIR) filters
Linear systems
Mathematical analysis
MATLAB
maximally flat approximation
Passband
Receivers
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Zusammenfassung:The simplest decimation filter is the cascaded-integrator-comb (CIC) filter. However, its magnitude response has a high passband droop, which is not tolerable in many applications. One technique for the reduction of the droop is the compensation by a filter called CIC compensator. This brief presents a method for the design of high-order finite-impulse-response CIC compensators which is based on maximally flat error criterion. The compensator's coefficients are obtained by solving a linear system of equations, which is formed using a straightforward procedure. The compensators presented are suitable for application in narrow-band software radio receivers.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2011.2172522