The Direct Sampling SDR Architecture
The traditional radio receiver uses analog processing, i.e. analog mixers, filters and amplifiers to convert the incoming RF analog signal from the antenna to baseband, …
Category: SDR Basics
SSB Demodulation
The demodulation of single-sideband (SSB) signals requires special attention, because simple mixing leads to superposition of the upper and lower sidebands at audio frequencies. The …
Powerful Hardware for SDR: The Zynq and the Zedboard
This an excerpt of my more extensive paper on Xilinx’s Zynq System-on-Chip for Software Defined Radio processing from 2018: “The Xilinx Zynq: A Modern System …
Basics of Analog-to-Digital Conversion
Digitizing Signals and Discretization The heart of a direct conversion receiver is the analog-to-digital converter (A/D converter or ADC), that samples analog signal in order …
Advantages of Digital Signal Processing for SDRs
With the advent of digital technology, analog circuits in radio transceivers have been widely replaced by digital signal processing. This is because digital signal processing …