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Finite band approximation for distributed and digital selective linear phase transfer functions
Author(s) -
Fahmy M. F.,
Rhodes J. D.
Publication year - 1975
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.4490030106
Subject(s) - equidistant , reciprocal , linear phase , transfer function , digital filter , amplitude , phase (matter) , mathematics , filter (signal processing) , mathematical analysis , topology (electrical circuits) , algorithm , computer science , physics , geometry , optics , engineering , electrical engineering , combinatorics , philosophy , linguistics , quantum mechanics , computer vision
Using the recently derived formula which interpolates to a linear phase response at equidistant frequency intervals in a distributed variable, transfer functions are constructed which exhibit flat amplitude and linear phase characteristics over a finite band. Reciprocal realizations for the implementation in distributed structures are derived, together with a non‐reciprocal version ideally suited for recursive digital filter design. Their superiority over the corresponding maximally flat solutions is also illustrated.