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Pseudo‐Elliptic Function Bandstop Filter with Shunt Foster Sections
Author(s) -
Malherbe Johannes A. G.,
Louw Johnnes J.
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27735
Subject(s) - chebyshev filter , elliptic filter , band stop filter , stopband , prototype filter , elliptic function , butterworth filter , control theory (sociology) , low pass filter , microwave , electronic engineering , shunt (medical) , mathematics , network synthesis filters , filter (signal processing) , topology (electrical circuits) , engineering , mathematical analysis , computer science , electrical engineering , band pass filter , telecommunications , medicine , control (management) , artificial intelligence , cardiology
Filters with transmission zeros in the stopband have been shown to have superior rates of cutoff. Conventional Cauer filters give excellent performance but are relatively large and not always practically realizable. In this article, the design of a pseudo‐elliptic bandstop filter which employs only shunt Foster sections and unit elements is presented. The filter is of the same size as a Chebyshev filter of the same order, but has a performance comparable to a Cauer filter. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1758–1762, 2013