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Design of Complex Digital Filters Using Frequency Transformation
Hiroshi IWAKURA Masahide OGASAWARA
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1991/12/25
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Issue on the 1991 IEICE Fall Conference)
Category: Digital Signal Processing
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This letter presents a new design method for complex digital filters with an asymmetrical frequency response based on the frequency transformation, and shows a wave digital lattice network realization consisting of alternative connection of imaginary resistances and unit elements. As an example, a third order complex bandpass filter is designed, and its sensitivity characteristics are presented.