Abstract
This paper presents a higher order voltage and current mode low pass or high pass filter for wave active filter based on Voltage Differencing Transconductance Amplifiers (VDTAs). The wave equivalent variable technique and topological simulation as well as operational realization using wave variables techniques are proposed for basic active building blocks of wave active filters. The proposed wave equivalent technique is employed for wave active filter with the proper selection of the terminal connections. This work presented the basic element for the realizing wave active filter is the series inductor with parallel grounded capacitor. The proposed wave active filter is verified by realizing a 4th order low pass and high pass Butterworth filter with minimum power consumption at ±0.82 V using SPICE simulation with 0.18 μm TSMC CMOS technology parameters.
Highlights
This paper presents a higher order voltage and current mode low pass or high pass filter for wave active filter based on Voltage Differencing Transconductance Amplifiers (VDTAs)
This paper presents the realization of wave active filter using a recently introduced active building block as VDTA
The CMOS realization of the VDTA based Wave Active Filter is shown in Figure 2 with the help of Equation (2) the wave equivalent technique is used for the replacement of the components of wave active filter defined by the scattering matrix in Equation (5)
Summary
The current mode active building blocks approaches for analog signal processing and digital signal processing circuits as compared to voltage mode active building blocks due to its high potential performance such as larger bandwidth, less circuit complexity, large dynamic range, higher operating speed, very low power
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