Open AccessPseudo‐elliptic bandstop filter with 1:2:3 harmonic ratio stubs
Author(s) -
Malherbe J.A.G.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2012.3695
Subject(s) - band stop filter , cutoff frequency , harmonic , low pass filter , elliptic filter , mathematics , filter (signal processing) , cutoff , topology (electrical circuits) , mathematical analysis , physics , acoustics , electronic engineering , electrical engineering , optoelectronics , engineering , quantum mechanics , combinatorics
By employing open circuited stubs with a length ratio of 1:2:3 separated by three unit elements, it is shown that a pseudo‐elliptic frequency response can be obtained with a compact structure. It has an electrical performance comparable to that of a Cauer filter, but is realisable in etched form for very wide bandwidths and very high rates of cutoff.