1D linear-phase band-pass multiplierless FIR Hilbert transformers and filters |
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Authors: | Vlastimir D. Pavlović Nebojša S. Dončov Dejan G. Ćirić |
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Affiliation: | 1. Faculty of Electronic Engineering, University of Ni?, Aleksandra Medvedeva 14, P.O. Box 73, 18000 Ni?, Republic of Serbiavlastimir.pavlovic@elfak.ni.ac.rs;3. Faculty of Electronic Engineering, University of Ni?, Aleksandra Medvedeva 14, P.O. Box 73, 18000 Ni?, Republic of Serbia |
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Abstract: | An original analytical method, based on modified Christoffel–Darboux formula, is used in the paper in order to synthesise a linear-phase band-pass finite impulse response (FIR) filter function that can have an effect of Hilbert transformer. New structure of the band-pass FIR filter in recursive realisation, together with the corresponding difference equation, is presented providing the efficient filter solution without multipliers. Several examples of filter types for different parity of two real free integer parameters, including a particular solution of Hilbert transformer, are considered in terms of required number of adders and values of cut-off frequencies of the pass and stop bands. A comparison of the proposed band-pass filter characteristics with those of a classical filter solution is provided in the paper. |
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Keywords: | Linear-phase 1D FIR filter band-pass filter Hilbert transformer multiplierless Chebyshev classical orthonormal polynomials Christoffel–Darboux formula |
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