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dc.contributor.authorMolina-Salgado, G.-
dc.contributor.authorJovanovic-Dolecek, G.-
dc.contributor.authorRosa, José M. de la-
dc.identifier.citationIEEEInternational Midwest Symposium on Circuits and Systems (IWSCAS): 566-569 (2013)-
dc.descriptionComunicación presentada al "MWSCAS 2013" celebrado en Columbus (E.E.U.U.) del 4 al 7 de Agosto de 2013-
dc.description.abstractThis paper presents a design methodology to synthesize band-pass continuous-time Sigma-Delta modulators with a widely programmable notch frequency for the efficient digitization of radio-frequency signals in the next generation of software-defined-radio mobile systems. The presented modulator architectures are based on a fourth-order loop filter ¿ implemented with two LC-based resonators ¿ and a finite- impulsive-response feedback loop to increase their flexibility and degrees of freedom, considering three different cases for the digital-to-analog converter waveform, namely: a return-to-zero, a non-return-to-zero and a raised-cosine waveform. In all cases, the notch frequency can be reconfigured from 0.1fs to 0.4fs, while keeping the noise shaping performance, the stability and low sensitivity to circuit-element tolerances. This feature can be combined with undersampling techniques to achieve an efficient and robust digitization of 0.5-to-5GHz signals with scalable resolution and programmable signal bandwidth.-
dc.publisherInstitute of Electrical and Electronics Engineers-
dc.titleBand-Pass Continuous-Time Sigma-Delta Modulators with Widely Tunable Notch Frequency for Efficient RF-to-Digital Conversion-
dc.typecomunicación de congreso-
dc.description.versionPeer Reviewed-
Appears in Collections:(IMSE-CNM) Comunicaciones congresos
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