New High-Input Impedance MISO-Type Universal Biquad Filter Employing CFOAs
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8/10/2019 New High-Input Impedance MISO-Type Universal Biquad Filter Employing CFOAs
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JOURNAL OF TELECOMMUNICATIONS, VOLUME 27, ISSUE 2 , OCTOBER 2014
28
New High-Input ImpedanceMISO-TypeUniversal Biquad Filter Employing CFOAs
KasimK. Abdalla
AbstractA new universal multiple inputs single output (MISO) type biquad employing three current feed-back operational
amplifiers (CFOAs) is presented. The circuit having three inputs and one output can realize all the five basic filtering functions
namely, low pass (LP), high pass (HP), band pass (BP), Notch-filter (NF) and all pass (AP) in voltage mode. The proposed
circuit enjoys the following features: orthogonal control of resonance angular frequency (!o) and quality factor (Q), low active
and passive sensitivitiesand low-output impedances. The workability of the proposed circuit has been confirmed by PSPICE
simulations basedupon AD844 type CFOAs.
IndexTermsBiquad filters, Current feedback operational amplifier, Analog circuit design, Voltage-mode filters, Analog signal
processing.
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1 INTRODUCTION
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5 CONCLUSION
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REFERENCES
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