Universal biquadratic digital filter with tunable capability

This paper presents a tunable universal biquadratic digital filter. The transfer functions in z-domain of universal biquadratic digital filter that can give five outputs simultaneously are obtained by bilinear s-z transformation using modified bilinear Pascal matrix. The universal biquadratic digital filter structure has shown before the tunable approach of universal biquadratic digital filter will be derived later. The center frequency and bandwidth of the proposed tunable universal biquadratic digital filter can be tuned by tuning parameters.