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1.5 V square‐root domain universal biquad filters
Author(s) -
Laoudias C.,
Psychalinos C.,
Stoumpou E.
Publication year - 2013
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.802
Subject(s) - digital biquad filter , network topology , square root , frequency domain , computer science , topology (electrical circuits) , square (algebra) , software , electronic engineering , voltage , control theory (sociology) , mathematics , engineering , capacitor , electrical engineering , artificial intelligence , geometry , control (management) , computer vision , operating system , programming language
Square‐root domain universal biquad topologies are introduced in this paper. One of them is single input multiple output, while the other one is multiple input single output biquad. Important benefits offered by the proposed topologies are the electronic adjustment of the resonant frequency and the capability for operating in a low‐voltage environment; also, the resonant frequency could be adjusted without disturbing the Q factor and vice‐versa. Simulation results using the Spectre simulator of the Analog Design Environment of Cadence software validate the correct operation of the proposed topologies and provide important performance characteristics. Copyright © 2011 John Wiley & Sons, Ltd.