Voltage-Mode Universal Biquadratic Filter Using Single DVCC

Figure 3

Simulated frequency responses of Figure 1 designed with 𝑉_in2=𝑉_in4=0 (grounded), 𝑉_in1=𝑉_in3 = input voltage signal, 𝐶₁=𝐶₂=50pF, and 𝑅₁=𝑅₂=10kΩ: (a) notch filter (𝑉_o1), (b) lowpass filter (𝑉_o2), and (c) highpass filter (𝑉_o3).

(a)

(b)

(c)