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Measurement of Harmonics Using Spectrum Analyzers

Explore practical techniques for accurate harmonic measurements with spectrum analyzers. Learn how the R&S®FSW minimizes instrument-generated distortion for more reliable results.

August 31, 2026 by Rohde & Schwarz
Topics Covered
Spectrum Analyzer Design Minimizing Harmonics
Harmonics in the Microwave Range
Harmonics Below the Microwave Range
Differentiating Between DUT Generated and Analyzer Generated Harmonics

 

Application Note Overview

Learn how to accurately measure harmonic signals using modern spectrum analyzers. This application note explains how harmonics originate in nonlinear components, how they are specified, and how to distinguish harmonics generated by the device under test from those introduced by the analyzer itself. It also examines the R&S®FSW spectrum analyzer architecture and shows how RF attenuation and the optional R&S®FSW-B13 high-pass filters can minimize analyzer-generated harmonics while preserving measurement sensitivity.

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