What is a complex filter?
A complex filter is a two-input two-output linear network which. frequency response is not necessarily symmetrical with respect to. dc (ω = 0). Its gain and phase responses are functions both of the. frequency and the relative phase difference of the two real inputs.
What are the methods of filter design?
The filter design methods provided in the DFD toolkits include Kaiser window, Dolph-Chebyshev window, and equi-ripple for FIR filters; and Butterworth, Chebyshev, Inverse Chebyshev, and Elliptic for IIR filters. In addition, the DFD toolkit has some Special Filter Design VIs.