A simple design method for transitional Butterworth—Chebyshev filters
Some properties of the Transitional Butterworth—Chebyshev (TBC) filters are studied and a simple design method to obtain such filters is given. For a magnitude specification, the order of the transitional filter obtained will be the same as that of, or at most one higher than that of, the corresponding Chebyshev filter. In addition, the linearity of the phase response is improved.