A method is presented for designing IIR all-pass filters, the phase of which approximates a given phase in the equiripple (Chebyshev) space. The method is exclusively based on the solution of the linear equation system.
Keywords :
all-pass filters; digital filters; network synthesis; poles and zeros; Chebyshev approximation; IIR all-pass filters; equiripple phase; filter design; group delay; linear equation system; phase error; zeros;
