Voltage-mode multifunction biquadratic filter with single input and five outputs

In this paper, a new tunable voltage-mode multifunction biquadratic filter with single input and five outputs is presented. The proposed configuration is very simple, consisting of one plus-type single-output differential difference current conveyor (DDCC), one plus-type dual-output inverting second-generation current conveyor (DO-ICCII), three resistors and two grounded capacitors. The use of grounded capacitors is particularly attractive for integrated circuit implementation. The filter can simultaneously realize bandreject, highpass, lowpass and two bandpass filtering responses with single input and five outputs. It permits orthogonal controllability of the quality factor and resonance angular frequency, and no component matching conditions or inverting-type input voltage signals are imposed. All the passive and active sensitivities are low. HSPICE and MATLAB simulations results are provided to demonstrate the theoretical analysis.