A numerical algorithm to design multivariable low-pass equiripple filters

The designs of low-pass equiripple filters employing lumped, as well as distributed, elements are obtained by numerical methods. The number of ripples is restricted to be equal to the number of elements in the filter. The solution of a set of simultaneous nonlinear equations gives the element values directly. The technique has been used to design a wide variety of filters of practical interests.