TITLE:
New Single Input Multiple Output Type Current Mode Biquad Filter Using OTAs
AUTHORS:
Manish Gupta
KEYWORDS:
Active Filters, Current Mode, Operational Transconductance Amplifier, Universal Filter
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.4,
April
21,
2016
ABSTRACT: This paper presents a new current mode (CM) single-input and multi-output (SIMO)-type biquad using two multiple output OTAs and one current follower as an active device and having two grounded capacitors. This SIMO type circuit realizes all the five filter functions as low pass, band pass, high pass, band reject and all pass filter transfer functions simultaneously. This circuit has the unity gain transfer function for all the five types of filters. The circuit enjoys electronic tunability of angular frequency and bandwidth. The 0.18 μm TSMC technology process parameters have been utilized to test and verify the performance characteristics of the circuit using PSPICE. The sensitivity analysis, transient response and calculations of total harmonic distortion have also been shown.