Spectrum Analyzer Basics

Download the Noise Figure Measurements Application Note

Weak signals are often obscured by noise added from receiving-system components. This application note explains how noise figure characterizes the ability of RF and microwave systems, amplifiers, mixers, and receivers to process low-level signals, and why repeatable, accurate measurements are critical for comparing system and component performance.

  • Understand what noise figure measures 
  • See why noise matters in communication systems
  • Review two-port network noise characteristics
  • Learn the Y-factor noise figure method
  • Compare noise figure measurement instruments






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