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Bandwidth-Enhancement gm-C Filter with Independent wo and Q Tuning Mechanisms in Both Topology and Control Loops

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Martínez García, HerminioMés informacióMés informacióMés informació
Vidal López, Eva MaríaMés informacióMés informacióMés informació
Poveda López, AlbertoMés informació
Guinjoan Gispert, FranciscoMés informacióMés informacióMés informació
Document typeConference report
Defense date2010-06
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
This paper deals with the proposal of a new topology for a gm-C continuous time filter which allows the adjustment and tuning of its characteristic parameters (ωO and Q) in an independent way (without cross-tuning), thereby extending the Q range of the filter for a particular ωO value. Additionally a comparison of three different Q-tuning algorithms is presented. It is shown that an LMS-based Q-control strategy allows to overcome the intrinsic dependence between the Q and ωO tuning loops. The combination of both the proposed filter topology and the selected control loop algorithms results in an enhanced transient performance as well as an improvement in terms of cross-detuning.
CitationMartinez, H. [et al.]. Bandwidth-Enhancement gm-C Filter with Independent wo and Q Tuning Mechanisms in Both Topology and Control Loops. A: IEEE International Symposium on Circuits and Systems. "IEEE International Symposium on Circuits and Systems 2010". París: 2010, p. 3625-3628. 
URIhttp://hdl.handle.net/2117/7746
DOI80-646530
ISBN978-1-4244-5309-2
Publisher versionhttp://www.iscas2010.org/
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  • EPIC - Energy Processing and Integrated Circuits - Ponències/Comunicacions de congressos [351]
  • Departament d'Enginyeria Electrònica - Ponències/Comunicacions de congressos [1.608]
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