Volume 3 Issue 3 June - August 2015
Research Paper
Romita Mullick*, Neeta Pandey**,
Rajeshwari Pandey***
* PG Scholar, Department of
Electrical Engineering, University of Pennsylvania.
**-*** Associate Professor,
Department of Electronics and Communication Engineering, Delhi Technological
University, Delhi, India.
Mullick, R., Pandey, N., and Pandey,
R. (2015). Multi Input Single Output Biquadratic Universal Filter using
OTRA. i-manager’s Journal on Circuits and Systems, 3(3),
30-37. https://doi.org/10.26634/jcir.3.3.4783
Abstract
This paper proposes
a Multi Input Single Output (MISO) voltage-mode universal biquadratic filter
employing Operational Transresistance Amplifier (OTRA) as anactive element. All
five standard filter functions namely Low Pass(LP), High Pass(HP), Band Pass(BP),
Band Reject (BR) and All Pass (AP) are realized from the same circuit topology
through appropriate input selections. The quality factor of the proposed
configuration can be controlled independent of the angular frequency.
Internally grounded input terminals of OTRA, render the proposed circuit
insensitive to parasitic capacitances. The effect of non-ideal behaviour of the
OTRA on the circuit performance is also analysed. Workability of the proposed
filter is verified through SPICE simulations using 0.5 μm CMOS process
parameters and the simulation results are in close agreement to the theoretical
values.
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