Low Order Wideband Multiplierless Comb Compensator

This paper presents a novel multiplierless wideband comb compensator with a low absolute value of passband deviation and a low number of adders. The number of adders depends on the number of cascaded combs, and it is between 5 and 9. Similarly, the absolute value of the passband deviation of the compensated comb depends also on the number of cascaded combs and varies from 0.06 dB (single comb) to 0.11 dB (six cascaded combs). The magnitude response of the compensator is synthesized using sinewave functions resulting in a fourth-order compensator filter. The comparisons with some recent methods from literature are presented to show the benefits of the proposed approach.