Design of IIR digital integrators using a magnitude constrained minimax phase error method

New designs of infinite impulse response (IIR) wideband digital integrators of second-, third- and forth-order are presented in this paper. These new integrators are designed by a recently proposed magnitude constrained minimax phase-error method. In these designs, the maximum phase response error is minimized under some constraints that the maximum relative magnitude response error is below a prescribed level. Simulation results show that our proposed wideband IIR digital integrators have much smaller maximum phase response error and maximum relative magnitude error than existing wideband IIR digital integrators in the literature.