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This book presents innovative solutions for the implementation of Sigma-Delta Modulation (SDM) based Analog-to-Digital Conversion (ADC), required for the next generation of wireless hand-held terminals. It goes from basic concepts to the frontiers its subject.

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1. Introduction.- 2. Sigma-Delta DCs: Basic Concepts, Topologies and State of the Art.- 3. New Sigma-Delta Cascade Modulators for the Next Generation of Wireless Telecom.- 4. A 130-nm CMOS Reconfigurable 2-1-1 Cascade SC Sigma-Delta M for GSM/BT/UMTS.- 5. A 1.2-V 90-nm CMOS Reconfigurable 2-2 Cascade SC M for GSM/BT/GPS/UMTS/DVB-H/WiMAX.- 6. A 1.2-V 90-nm CMOS Adaptive Concurrent Resonation-Based 2-2-2 Cascade Sigma-Delta Modulator for SDR.- 7. Performance of the Prototypes and Comparison with the State of the Art.- Appendix A. Study of Optimum Resonation.- Appendix B. Design of Electrical Blocks for the Practical Implementation of SMASH Sigma-Delta Ms.

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