Open AccessComplex conjugate poles implementation in discrete‐time charge‐domain filters
Author(s) -
Sohrabi Z.,
Jannesari A.
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.0384
Subject(s) - chebyshev filter , butterworth filter , filter (signal processing) , raised cosine filter , filter design , electronic filter topology , transfer function , low pass filter , m derived filter , control theory (sociology) , topology (electrical circuits) , network synthesis filters , constant k filter , digital filter , mathematics , prototype filter , active filter , impulse response , electronic engineering , computer science , mathematical analysis , engineering , electrical engineering , voltage , control (management) , combinatorics , artificial intelligence , computer vision
A discrete‐time charge‐domain filter is proposed, which can realise complex conjugate poles in the transfer function of the filter. By employing a second transconductance in the feedback path of a second‐order infinite impulse response charge‐domain filter, it is proved that the filter topology is capable of implementing complex poles. This method makes charge‐sampling filters more efficient in designing frequency‐domain filters where they can be used to synthesise any type of filter structures such as Butterworth, Chebyshev and so on.