Delta-Sigma Modulation for Digital Transmitters: from Fundamental Concepts to Advanced Architectures

This talk provides an overview of Delta-Sigma Modulation (DSM) for high-performance all-digital RF transmitters. After reviewing foundational concepts and key literature, we will describe advanced architectural and implementation techniques. The presentation will explore solutions for high-speed operation and for managing out-of-band noise, including FIR-DACs and time approximation filters, and discuss the use of hybrid DSMs to balance performance and complexity. We will also introduce the emerging concept of spatial delta-sigma modulation for multi-antenna and massive MIMO systems.