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AN ALTERNATIVE APPROACH FOR OBTAINING 2D DISCRETE FILTERS BY CASCADING SECTIONS EACH HAVING UNITY DEGREE IN EACH VARIABLE

C. S. GARGOUR

Department of Electrical Engineering, École Technologie Supérieure, Montreal, QC, Canada, H2T 2C8, Canada

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V. RAMACHANDRAN

Department of Electrical and Computer Engineering, Concordia University, Montreal, QC, Canada, H3G 1M8, Canada

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, and

RAVI P. RAMACHANDRAN

Department of Electrical Engineering, Rowan University, Glassboro, New Jersey, 08028, USA

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https://doi.org/10.1142/S0218126604001830Cited by:0 (Source: Crossref)

Abstract

The properties of a 2D discrete transfer function with degree of each variable being unity are discussed. The coefficients of the denominator polynomial contain a parameter k (having real values) whose bounds are determined by stability considerations. These bounds are obtained by testing the overall polynomial at only four points z₁=±1 and z₂=±1. Suitable numerator polynomial can be associated to get the overall transfer function. Such structures can be cascaded so that the overall magnitude response can be changed by altering the response of one or more sections.

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