Dual output voltage differencing buffered amplifier based wave active filter

In this paper, a wave active filter structure based on Voltage Differencing Buffered Amplifier (VDBA) is presented. The proposed structure uses a lower number of active building blocks for ladder simulation using grounded capacitors. The workability of the proposed structure is verified for a 4^th order low pass Butterworth filter using PSPICE simulation with 0.18μm TSMC CMOS technology parameters.