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Approximation of a phase characteristic by the transfer‐function of a digital filter
Author(s) -
Unbehauen Rolf
Publication year - 1973
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.4490010206
Subject(s) - transfer function , filter (signal processing) , phase (matter) , digital filter , amplitude , function (biology) , control theory (sociology) , mathematics , simple (philosophy) , computer science , physics , engineering , electrical engineering , optics , artificial intelligence , philosophy , control (management) , epistemology , quantum mechanics , evolutionary biology , biology
Abstract A method is presented for determining the transfer‐function H ( z ) of an asymptotically stable digital filter on the basis of a prescription for phase in a certain frequency interval. The restrictions to be imposed on the prescribed phase function are investigated. It is possible to make amplitude prescription in addition. The results will be demonstrated with the aid of a simple example.