HARDWARE-EFFICIENT TRANSCEIVER WITH DELTA-SIGMA DIGITAL-TO-ANALOG CONVERTER

摘要

A hardware-efficient transceiver. The transceiver (80) includes a digital circuit for converting baseband signals to intermediate frequency signals. A signal source provides a first periodic signal of a first frequency. A direct digital synthesizer (84) provides a second periodic signal of a second frequency from the first periodic reference signal. An upconverter circuit digitally upconverts the baseband signals to digital intermediate frequency signals using the second periodic signal. A digital-to-analog converter converts (82) the digital intermediate frequency signals to analog intermediate frequency signals using the first periodic signal.