| 摘要 |
PROBLEM TO BE SOLVED: To provide a hardware-efficient transceiver with a delta-sigma digital-to-analog converter.SOLUTION: A hardware-efficient 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 a first periodic reference signal. An upconverter circuit 98, 100 digitally upconverts the baseband signals to digital intermediate frequency signals using the second periodic signal. A digital-to-analog converter 82 converts the digital intermediate frequency signals to analog intermediate frequency signals using the first periodic signal. |
