Wideband digital integrator

A novel recursive wideband digital integrator is presented. The integrator is obtained by interpolating two popular digital integration techniques, the SKG (Schneider-Kaneshige-Groutage) rule and the trapezoidal rule. The proposed integrator accurately approximates the ideal integrator reasonably well over the entire Nyquist frequency range with absolute magnitude error ≤ 0.02 and compares favourably with the existing integrators. The proposed integrator is of third order and is highly accurate.