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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.43 [2005] >
IJPAP Vol.43(09) [September 2005] >
| Title: | Operational transconductance amplifier based voltage-mode universal filter |
| Authors: | Ahmad, S Naseem
Khan, M R
Moinuddin |
| Keywords: | Operational transconductance amplifier
Amplifier
Universal filter
OTAs
Current feedback amplifier
Transconductance |
| Issue Date: | Sep-2005 |
| Publisher: | CSIR |
| IPC Code: | H03H |
| Abstract: | An operational
transconductance amplifier (OTA) based voltage-mode universal filter is
presented. The proposed circuit employs four OTAs with two grounded capacitors
and realizes lowpass, bandpass and highpass filter functions. The
pole-frequency wp and
pole-Q, Qp are orthogonally adjustable by proper choice of
transconductance gains of OTAs and capacitor values. The proposed universal
filter can also be used for the realization of notch filter function. In
addition a current feedback amplifier (CFA)-based universal filter is also
realized by converting the OTA-based circuit using standard tranformation
method1 [Hou C L & Wang W Y, IEE
Proc Circuits Devices and Systems,
144, 209-212.]. Both the circuits have been studied in detail. The simulation
results have also been included. |
| Page(s): | 714-719 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.43(09) [September 2005]
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