Radio Frequency (RF) & Wireless Design

I came across this SDR article recently which shows how even an Arduino can be used for direct sampling of RF radio waves : https://www.edn.com/exploring-software-defined-radio-without-the-annoying-rf-part-1/

This is to help engage thinking at the most basic digital level (embedded MCU, not embedded CPU) to help understand the digital conversion concepts before progressing to harder levels of RF designs.

The second article just came out recently too :

https://www.edn.com/exploring-software-defined-radio-without-the-annoying-rf-part-2/

So if you would like to understand the basic concepts and you have a basic digital Arduino understanding, these articles explain a simple way to grasp RF design without the deeper RF design layers.