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

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Modern RF (Radio Frequency) systems rely on precise circuit fabrication and interconnects to deliver reliable high-frequency performance. Used in applications such as wireless communication, radar, and sensing, RF circuits must preserve signal quality and minimize signal loss. RF components are built and connected in different ways depending on system needs. Most RF systems use planar circuit boards, which are linked to other circuits through RF interconnects such as waveguides, coaxial connecto

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This is the final article in our Mastering RF Engineering series, published in partnership with Mouser Electronics. The series explores how RF systems are designed, built, and tested, guiding readers from core principles to real-world applications in modern wireless technology. Because RF engineering demands extreme precision, robust test and measurement systems are essential throughout development, deployment, and maintenance. These tools ensure reliable performance, ongoing calibration, and co