DIGITAL FRONT END FOR USE WITH DIRECT DIGITAL RADIO FREQUENCY MODULATOR

摘要

The disclosure relates to a digital front end (DFE) (100) for a direct digital radio frequency modulator (DDRM), the DFE comprising: an up-sampling unit (101), configured to provide an up-sampled 4-phase digital baseband (DBB) signal (107) comprising in-phase (I) and quadrature (Q) information (105); and a conversion unit (103), configured to convert the up- sampled 4-phase DBB signal (107) to an 8-phase DBB signal (109).