Radio Frequency engineering is one of those fields that humbles even experienced engineers. Once you reach frequencies above a few hundred MHz, the rules change rapidly. Traces stop behaving like wires, impedance becomes a moving target, and your PCB layout quietly decides the fate of your entire design. This article, the first in a multi-part series on “Mastering RF Engineering,” by Mouser Electronics, explores how RF technology is designed, built, and tested, highlighting the principles, compo

Radio astronomy represents one of the most sophisticated applications of signal processing and interferometry in scientific research. The fundamental principle involves detecting radio frequency signatures emitted by cosmic phenomena, with different physical processes generating distinct radio signals that reveal the universe's composition and behaviour. The interferometric array approach - using multiple coordinated dishes as a single instrument - demonstrates advanced engineering and computati