Universal filter with three inputs using CCII+

First, Second and Higher Order Filter Design Using Current Conveyors

“…The universal filter with three inputs and single output using plus type CCIIs was presented by Ozoguz and Gunes [18] as shown in Fig. 6.20.…”

Voltage-Mode Universal Biquadratic Filter Using Single DVCC

“…Many voltage-mode universal biquadratic filters with multi-inputs were proposed [4][5][6][7][8][9][10]. From the different combinations of injection of input voltage signals, voltage-mode lowpass, bandpass, highpass, notch, and allpass filters can be obtained without changing the circuit topology.…”

High Input Impedance Voltage-Mode Universal Biquadratic Filter with One Input and Five Outputs Using Current Conveyors

“…However, some circuit configurations require the injection of an excitation signal from one terminal of the capacitor in the circuit design, so the resulting floating capacitors are not ideal for integrated circuit (IC) implementation [7], [13], [15], [17], [22], [24], [26], [28]. Moreover, only one standard filter function can be obtained in each filter realization.…”

“…The proposed circuit has the advantages of orthogonal control of the resonance angular frequency and quality factor and also low active and passive sensitivities. With respect to the multi-input universal filters in [7], [13]- [17], [22], [24], [26], [28], the proposed circuit can obtain the five standard filter functions simultaneously and employs only grounded capacitors. With respect to the one-input and multi-output circuits in [4]- [6], [10], [12], [18], [20], [21], [23], [30]- [34], all the standard filter functions can be obtained from the proposed circuit simultaneously.…”