Designing Efficient Digital Up and Down Converters for Narrowband Systems Application Note: Virtex-5 Family R Designing Efficient Digital Up and Down Converters for Narrowband Systems Author: Stephen Creaney and Igor Kostarnov XAPP1113 (v1.0) November 21, 2008 Summary Digital Up Converters (DUC) and Digital Down Converters (DDC) are key components of RF systems in communications, sensing, and imaging. This application note demonstrates how efficien……