Application Note | October 30, 2013

Spectrum Analysis Fundamentals

Source: National Instruments Corporation
NI RFSA Soft Front Panel

This application note teaches the basics of spectrum analysis and examines various signal analyzer architectures, from single stage to super heterodyne. Understand how to adjust vector signal analyzer (VSA) settings for optimal measurement performance. Content includes:

Heterodyne Conversion Architectures

  • History of swept-tuned analyzers
  • Overview of single-stage analyzer
  • Overview of multistage analyzer architecture

Signal Analyzer Metrics and Measurements

  • Noise floor and signal-to-noise ratio
  • Linearity performance (IP3 and TOI)
  • ACPR measurement
  • Modulation quality (EVM)

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