Digital RF Modulators Provide the High Density, Agility, and Cost Benefits for a Converged Cable Access Platform (CCAP)

By: Ajay Kuckreja

Abstract: A digital RF modulator, an integrated solution that satisfies stringent DOCSIS RF-performance requirements, takes advantage of modern technologies like high-performance wideband digital-to-analog conversion and CMOS technology scaling. This application note describes the concept and advantages of a digital quadrature amplitude modulation (QAM) modulator that uses the direct-RF architecture to enable a cable access platform (CCAP) system.