대한전자공학회논문지 (Journal of the Korean Institute of Telematics and Electronics)
- 제27권12호
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- Pages.1940-1946
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- 1990
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- 1016-135X(pISSN)
협대역 변이영역을 갖는 2차원 영위상 IIR 디지털 필터의 설계
A Design of 2-D Zero-Phase IIR Digital Filter with Narrow Transition Band
초록
In this paper, we are proposed a 2-D zero-phase IIR second-order filter which have separable denominators. The filter combines the advantages of the separable denominator and the simplicity of the McClellan transform. Generally, the McClellan transformation is not suitable for IIR filter because the 1-D to 2-D substibution can not be achieved easily in most of denominators. So we have designed the second order denominator using a separable condition via a first order McClellan transformation. The implementation of a higher order filter can be achieved by cascading such second order parts with different coefficients in denominator. As a result, we have suppressed the ripples in stopband and obtained the narrow transition band.
키워드