Fractional Order Filter Designing Using Modified Genetic Algorithm

A filter is an electrical network that alters the amplitude and/or phase characteristics of a signal with respect to frequency. Digital filter provide an important role in world of communication and computation. Fractional order Low pass Butterworth filters characteristics have been investigated in this paper, which cannot be achieved with conventional integer order Butterworth filters. In this paper, a modified version of genetic algorithm has been applied to design fractional order Butterworth filter. The designed filter provide better performance parameters as compared to classical integer order based design