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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
CDF MG @G 9
