Open AccessRealization of Voltage-mode Multifunction Biaquadratic Filter Using Minimum Number of Active Element
Author(s) -
Winai Jaikla,
Surapong Siripongdee,
Peerawut Suwanjan
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/559/1/012010
Subject(s) - active filter , current conveyor , filter (signal processing) , operational transconductance amplifier , high pass filter , low pass filter , resistor , band pass filter , realization (probability) , voltage , operational amplifier , capacitor , chebyshev filter , electronic engineering , control theory (sociology) , amplifier , engineering , computer science , cmos , electrical engineering , mathematics , statistics , control (management) , artificial intelligence
The realization of voltage-mode multifunction biquadratic filter has been presented in this research contribution. The proposed circuit contains three input voltage nodes and one output voltage node. The structure of proposed filter is simple consisting of one modified current controlled current conveyor transconductance amplifier (M-CCCCTA) as active building block with one resistor and two capacitors. With electronically controllable property of M-CCCCTA, the parameters, natural frequency (ω 0 ) and quality factor (Q) are electronically controlled by changing the external DC bias currents of the M-CCCCTA. The tuning characteristic of Q is also done without effect the w0. In the same circuit construction, five second order filter responses, all-pass, high-pass (HP), band-reject (BR), low-pass (LP) and band-pass (BP) functions are obtained. The output filter responses are obtained with applying appropriate input voltage to input node without the matching condition of active and passive elements. The performances of the proposed biquadratic filter have been verified through Pspice simulation in TSMC 0.25 μm CMOS technology parameters.