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Design Considerations for Multistandard Cascade ΣΔ Modulators

AutorMorgado, Alonso; Río, Rocío del; Rosa, José M. de la ; Medeiro, Fernando ; Pérez-Verdú, Belén ; Rodríguez-Vázquez, Ángel
Palabras claveSigma-Delta A/D Converters
Multi-Standard Applications
Fecha de publicaciónnov-2005
CitaciónA. Morgado, R. del Río, J.M. de la Rosa, F. Medeiro, B. Pérez-Verdú, F.V. Fernández and A. Rodríguez-Vázquez: "Design Considerations for Multistandard Cascade ΣΔ Modulators", Proceeding of the 2005 Conference on Design of Circuits and Integrated Systems, Lisbon, November 2005.
ResumenThis paper discusses design considerations for cascade Sigma-Delta Modulators (ΣΔMs) included in multistandard wireless receivers. Four different standards are covered: GSM, Bluetooth, UMTS, and WLAN. A top-down design methodology is proposed to find out the optimum modulator architecture in terms of circuit complexity and reconfiguration parameters. Several reconfiguration strategies are adopted at both architecture- and circuit-level in order to adapt the modulator performance to the different standards requirements with adaptive power consumption. Time-domain behavioural simulations considering a 0.13μm CMOS implementation are shown to validate the presented approach.
URIhttp://hdl.handle.net/10261/3849
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