Active Elements for Analog Signal Processing: Classification, Review, and New Proposals

In the paper, an analysis of the state-of-the-art of active elements for analog signal processing is presented which support – in contrast to the conventional operational amplifiers – not only the voltage-mode but also the current- and mixed-mode operations. Several problems are addressed...

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Bibliographic Details
Published in:Radioengineering 2008-12, Vol.17 (4), p.15-32
Main Authors: Z. Kolka, V. Biolkova, R. Senani, D. Biolek
Format: Article
Language:English
Subjects:
Active element
CDBA
CDTA
current conveyor
filter
operational amplifier
OTA
Online Access:Get full text
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Summary:In the paper, an analysis of the state-of-the-art of active elements for analog signal processing is presented which support – in contrast to the conventional operational amplifiers – not only the voltage-mode but also the current- and mixed-mode operations. Several problems are addressed which are associated with the utilization of these elements in linear applications, particularly in frequency filters. A methodology is proposed which generates a number of fundamentally new active elements with their potential utilization in various areas of signal processing.
ISSN:1210-2512