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High speed sharpening of decimating CIC filters

Stephen, G. and Stewart, R.W. (2004) High speed sharpening of decimating CIC filters. Electronics Letters, 40 (21). pp. 1383-1384. ISSN 0013-5194

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A modification of an existing technique is presented which compensates for passband droop in the frequency response of cascaded integrator comb (CIC) filters for power-of-two decimation factors. The new technique delivers passband droop correction comparable to existing techniques, while allowing faster operation than for existing structures by moving integrator sections away from the filter input.