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Current‐mode dual‐output ICCII‐based tunable universal biquadratic filter with low‐input and high‐output impedances
Author(s) -
Chen HuaPin
Publication year - 2014
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.1858
Subject(s) - electrical impedance , dual mode , dual (grammatical number) , filter (signal processing) , electronic engineering , current (fluid) , electrical engineering , mode (computer interface) , computer science , control theory (sociology) , physics , topology (electrical circuits) , engineering , art , literature , control (management) , artificial intelligence , operating system
SUMMARY A new tunable current‐mode (CM) biquadratic filter with three inputs and three outputs using three dual‐output inverting second‐generation current conveyors, three grounded resistors and two grounded capacitors is proposed. The proposed circuit exhibits low‐input impedance and high‐output impedance which is important for easy cascading in the CM operations. It can realize lowpass, bandpass, highpass, bandreject and allpass biquadratic filtering responses from the same topology. The circuit permits orthogonal controllability of the quality factor Q and resonance angular frequency ω o , and no component matching conditions or inverting‐type input current signals are imposed. All the passive and active sensitivities are low. Hspice simulation results are based on using TSMC 0.18 µm 1P6M process complementary metal oxide semiconductor technology and supply voltages ±0.9 V to verify the theoretical analysis. Copyright © 2012 John Wiley & Sons, Ltd.