JDP_V2_N3_RP5 Deepak Gudivada Muralidhar P.V. Journal on Digital Signal Processing 2322–0368 2 3 28 31 Laplace(S) to Z –Transformation, Al-Alaoui and Bilinear Transformations The Design of Infinite Impulse Response (IIR), basically are of two type. In literature ,one is Butterworth and second one is Chebyshev. Digital IIR Filters are derived from analog IIR Filters by different Laplace(S) to Z –Transformation techniques, out of which the most efficient techniques are differentiation approximation, Al-Alaoui and bilinear transformations. In our proposals an attempt is made to develop digital IIR Lowpass, high Pass and band pass filters from novel S-Z transformations .Which will be derived from Finite Impulse Response (FIR) windows. The performance of the proposed S-Z Transformation is verified by the comparison of differentiators. July - September 2014 Copyright © 2014 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3013