An RF mixer converts one frequency to another using a nonlinear device. Learn how mixers work, LO frequency, conversion loss, isolation, types, and key specifications.

A dual directional coupler splits RF signal in both forward and reverse directions. Learn coupling factor, directivity, insertion loss, types, design, and selection.

A practical guide to designing RF test systems: signal routing, switching, calibration, and the small details that turn a fragile prototype into a reliable production tester.

A side-by-side comparison of vector network analyzers and spectrum analyzers: what each measures, when to use which, and how they complement each other in the lab.

How to calculate coaxial cable loss at any frequency, why attenuation scales with √f, and how to budget cable losses across your RF system.

A practical guide to impedance matching in RF circuits. Learn the theory, the Smith chart, and how to design L-networks, single-stub tuners and broadband transformers.