TITLE:
Performance Analysis of Analog Butterworth Low Pass Filter as Compared to Chebyshev Type-I Filter, Chebyshev Type-II Filter and Elliptical Filter
AUTHORS:
Wazir Muhammad Laghari, Mohammad Usman Baloch, Muhammad Abid Mengal, Syed Jalal Shah
KEYWORDS:
Butterworth Filter, Chebyshev Filter, Elliptical Filter
JOURNAL NAME:
Circuits and Systems,
Vol.5 No.9,
August
28,
2014
ABSTRACT: A signal is the entity
that carries information. In the field of communication signal is the time varying
quantity or functions of time and they are interrelated by a set of different equations,
but some times processing of signal is corrupted due to adding some noise in the
information signal and the information signal become noisy. It is very important
to get the information from corrupted signal as we use filters. In this paper, Butterworth
filter is designed for the signal analysis and also compared with other filters.
It has maximally flat response in the pass band otherwise no ripples in the pass
band. To meet the specification, 6th order Butterworth filter was chosen
because it is flat in the pass band and has no amount of ripples in the stop band.