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.
Cite this paper
Laghari, W. , Baloch, M. , Mengal, M. and Shah, S. (2014) Performance Analysis of Analog Butterworth Low Pass Filter as Compared to Chebyshev Type-I Filter, Chebyshev Type-II Filter and Elliptical Filter. Circuits and Systems
, 209-216. doi: 10.4236/cs.2014.59023
 R.A.Barapate, J.S.Katre (2008) Digital Signal Processing. Second Revised Edition, Tech-Max.
 Williams, A.B. (1981) Electronic Filter Design Handbook. McGraw-Hill, Boston.
 Li, Z.S. (2006) New Study on Butterworth Low Pass Filter. Proceedings of the 1st International Symposium on Test Automation & Instrumentation, 3, 1532-1535.
 Proakis J.G., C.M. Rader, Ling, F.Y., Nikias, C.L., Maoonen, M. and Proudle, L.K. (2002) Algorithm for Statistical Signal Processing. 1st Edition, Pearson Education Inc., Delhi.
 Proakis, J.G. and Manolakis, D.G. (2007) Digital Signal Processing: Principles, Algorithms, and Applications. Pearson Education Ltd., New Jercy.
 Oppenheim, A.V., Schafer, R.W. and Buck J.R. (2003) Discrete-Time Signal Processing. Pearson Education, New Delhi.
 Fernandez-Vazquez, A. and Jovanovic-Dolecek, G. (2006) A New Method for the Design of IIR Filters with Flat Magnitude Response. IEEE Transactions on Circuits and Systems Regular Papers, 53, 1761-1771.
 (1997) MATLAB The Language of Technical Computing. The Math Works Inc., Natick.
 Selesnick, I.W. and Burrus, C.S. (1998) Generalized Digital Butterworth Filter Design. Transactions on Signal Processing, 46, 1688-1694.