Abstract
Purpose
To develop an OTA‐C‐based universal filter realizing all standard transfer functions viz low pass, high pass, band pass, notch and all pass without an inverting amplifier and with minimum component matching condition.
Design/methodology/approach
By developing different sets of current and voltage relationship involving simple independent transconductance in biquadratic functions using three operational transconductance amplifiers the aim has been achieved.
Findings
The circuit produces all pass transfer function as stated above without inverting amplifier as has been used in most of the earlier circuits. All realizations except all pass filter requires no matching condition. The circuit remains stable for non‐ideal OTAs.
Originality/value
The proposed circuit finds wide utility in industrial and research applications as a signal processing element.
Keywords
Citation
Kumar, K. and Pal, K. (2006), "Voltage mode multifunction OTA‐C biquad filter", Microelectronics International, Vol. 23 No. 2, pp. 24-27. https://doi.org/10.1108/13565360610659671
Publisher
:Emerald Group Publishing Limited
Copyright © 2006, Emerald Group Publishing Limited