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Modified Chebyshev bandstop filter with transmission zeros at real frequencies
Author(s) -
Malherbe Johannes A. G.,
Swiatko Adam
Publication year - 2011
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.25657
Subject(s) - chebyshev filter , stopband , elliptic filter , passband , microwave , transmission line , band stop filter , cutoff frequency , electronic engineering , logarithm , electrical impedance , physics , low pass filter , topology (electrical circuits) , mathematics , filter (signal processing) , mathematical analysis , engineering , electrical engineering , optics , band pass filter , telecommunications
The logarithmic periodic transmission line filter has been shown to be an attractive alternative to elliptic function filters when a high rate of cutoff is needed.In this article, it is shown that an improved passband and bandedge response can be obtained if impedances obtained from a Chebyshev prototype are used, and the stopband width increased by shifting the resonant frequencies of the stubs away from the centre frequency in a non‐periodic fashion. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:177–180, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25657