On 2-variable reactance functions for 2-dimensional recursive filter design
- 5 January 1978
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 14 (1) , 12-13
- https://doi.org/10.1049/el:19780009
Abstract
The use of 2-variable reactance functions for designing stable 2-dimensional recursive filters is critically examined. The investigation shows that although the stability of the resulting filters is ensured, such functions do not preserve the amplitude characteristics of the 1-dimensional filter prototype over the 2-dimensional digital domain. A special choice of reactance functions that yields best design results is discussed.Keywords
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