EDN

ADC Digital Downconverter: Decimation Filters and ADC Aliasing, Part 2

In part one of this blog series, ADC Digital Downconverter: Decimation Filters and ADC Aliasing, Part 1 we began looking at the decimation filtering in the DDC when the complex to real conversion is ...
Electronic Design

Use Software Filters To Reduce ADC Noise

Let’s say you chose a particular microcontroller for its 12-bit analog-to-digital converter (ADC). You built up your system, and although the ADC gives you 12 bits of resolution, the lower couple of ...
Embedded

Using Zoom FFT for spectral analysis

The Zoom FFT is interesting because it blends complex down conversion, lowpass filtering, and sample rate change through decimation in a spectrum analysis application. The Zoom FFT method of spectrum ...
Design-Reuse

Optimizing Up/Down Conversion with FPGA Techniques

Digital upconverters (DUCs) and digital downconverters (DDCs) are important components of every modern wireless base station design. While many DUC and DDC designs are available, there is a clear call ...
Electronic Design

Build SincK Decimators

The data is accumulated and a new output (Result) is available for every 16 inputs. In this case, the data throughput has been decimated by a factor of “16.” Although the data rate has also been ...
EDN

ADC Digital Downconverter: Decimation Filters and ADC Aliasing, Part 1

Over the last few blogs we’ve been looking at DDCs and how frequencies are shifted and folded in the output spectrum. In the last blog, ADC Digital Downconverter: A Complex Decimation Example we ...