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Digital Equiripple Group Delay Equalizers Using Alternating Extrema

Abdulazizjon Abdullaev

Abstract



Even order filters with equiripple group delay have been investigated. In this case the group delay has a minimum at the origin. Odd order case can be solved in the same manner, only the group delay will have a maximum at the origin. Design of an allpass filter with equiripple group delay has been achieved using alternating extrema method. The coefficients of the appropriate transfer function have been defined.

Keywords


allpass filter, group delay, equiripple, approximation, extrema, Golden Search method, Newton-Raphson method.

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