Improved design method for kaiser differentiators and comparison with equiripple method

Abstract
The paper describes several improvements in a method reported recently by Antoniou for the design of digital differentiators satisfying prescribed specifications. The improvements include the use of a more efficient optimisation algorithm, and a simple and accurate technique for the prediction of the required differentiator order. The improved design method is illustrated by several examples, and is compared with the equiripple design method.