Chapter 11

Digital Upconversion and Downconversion

Abstract

Digital upconversion is the process of moving the frequency content of a baseband signal to a much high frequency. Digital downconversion is the opposite process. The process is described intuitively as well as mathematically using previously developed concepts. In addition, the role of analog-to-digital convertor and digital-to-analog convertor in this process is discussed.

Keywords

Baseband; Downconversion; Intermediate frequency; Sinc compensation; Upconversion
Previously, we talked about complex modulation and baseband signals. The whole point of this is to create a signal that can be used to carry the information bits from one location to another, whether over copper wire, a fiber optic ...

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