In digital signal processing, a digital down-converter (DDC) converts a digitized, band-limited signal to a lower frequency signal at a lower sampling rate in order to simplify the subsequent radio stages. The process can preserve all the information …

2018年6月4日 · Digital down-conversion is a digital-signal-processing technique that is widely used in digital radio receivers. This article will review the basics of a digital down-converter (DDC). We’ll first look at the advantages of using a DDC rather than its analog counterpart.

This article explores the digital down conversion (DDC) function in high-speed ADCs. The primary focus here will be on the DDC functionality that exists in the AD9680 (as well as the AD9690, AD9691, a

In the first part of this article, What’s Up with Digital Downconverters—Part 1, we looked at the industry push for sampling higher frequencies in higher frequency RF bands and how digital downconverters (DDCs) can enable this type of radio architecture.

Digital Down Conversion is a technique that takes a band limited high sample rate digitised signal, mixes the signal to a lower frequency and reduces the sample rate while retaining all the information.

The Digital Down Converter or DDC. A fundamental part of many communications systems is Digital Down Conversion (DDC). Digital radio receivers often have fast ADC converters delivering vast amounts of data; but in many cases, the signal of interest represents a …

High-performance GSPS ADCs are now bringing the digital downconversion (DDC) function further up in the signal chain to reside within the ADC in a design solution based on Xilinx FPGAs. This approach of-fers several new design options to a high-speed system architect.

In this chapter, we cover the basics of digital conversion (analog to digital and digital to analog), the functionality of the digital up-converter (DUC) and digital down-converter (DDC) in relation to conversion between intermediate frequency (IF) and baseband with the emphasis on the implementation of the DDC and DUC for standard wireless ...