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New ΣΔ Cascade Modulators for the Next Generation of Wireless Telecom

  • Alonso Morgado
  • Rocío del Río
  • José M. de la Rosa
Chapter

Abstract

THE MANDATORY USE OF LOW OSR s IN WIDEBAND STANDARDS has forced SDMs to achieve the required DRs by resorting to different strategies, namely: high-order shaping—that can be implemented with high-order single-loop SDMs or, alternatively, by cascading low-order stages—and multi-bit embedded quantizers—that leads to the use of multi-bit DACs and DEM for medium-to-high ENOB specifications. A different approach, fully compatible with the former strategies, is based on the optimal spreading of notches within the signal band to increase ENOB [Schr93].

Keywords

Quantization Error Feedback Path Output Swing Behavioral Simulation Analog Adder 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Alonso Morgado
    • 1
  • Rocío del Río
    • 1
  • José M. de la Rosa
    • 1
  1. 1.Instituto de Microelectrónica de Sevilla Centro Nacional de Microelectrónica IMSE-CNM(CSIC/Universidad de Sevilla)SevillaSpain

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