Patent ID: 8842769
Filing Date: 2014-09-23
Classification: H03D,H04B

Abstract:
1. A digital up-conversion system for a concurrent multi-band signal, comprising: a plurality of digital up-converter chains configured to provide digital up-conversion for different ones of a plurality of frequency bands of a concurrent multi-band signal, where each digital up-converter chain of the plurality of digital up-converter chains comprises: a digital combiner configured to digitally combine a plurality of up-converted digital signals output from the plurality of digital up-converter chains to provide a combined digital signal; and one or more additional processing components configured to process the combined digital signal to provide the concurrent multi-band signal, the one or more additional processing components comprising a combined up-converter that provides additional up-conversion, a digital-to-analog converter, and a multi-passband radio frequency filter that follows the digital-to-analog converter.