Spectrum Analysis Application Notes
New Spectrum Analysis Basics!
After more than 10 years, Agilent's most popular application note, Spectrum Analysis Basics, has been updated.
- Click here to download a low resolution PDF of Spectrum Analysis Basics (2.2 MB)
- Click here to download a high resolution PDF of Spectrum Analysis Basics (8.5 MB)
This comprehensive look at spectrum analysis includes the following topics.
Chapter 1: Introduction
Frequency domain versus time domain. What is a spectrum? Why measure spectra? Types of measurements and types of signals
Chapter 2: Spectrum analyzer fundamentals
RF attenuator; low-pass filter or preselector; tuning the analyzer; IF gain; resolving signals; residual FM; phase noise; sweep time; envelope detector; displays; detector types; sample detection; peak (positive) detection; negative peak detection; normal detection; average detection; EMI detectors: average and quasi-peak detection; averaging processes; time gating
Chapter 3: Digital IF overview
Digital filters; the all-digital IF; custom signal processing IC; additional video processing features; frequency counting; more advantages of the all-digital IF
Chapter 4: Amplitude and frequency accuracy
Relative uncertainty; absolute amplitude accuracy; improving overall uncertainty; specifications, typical performance, and nominal values; the digital IF section; frequency accuracy
Chapter 5: Sensitivity and noise
Sensitivity; noise figure; preamplifiers; noise as a signal; preamplifier for noise measurements
Chapter 6: Dynamic range
Dynamic range versus internal distortion; attenuator test; noise; dynamic range versus measurement uncertainty; gain compression; display range and measurement range; adjacent channel power measurements
Chapter 7: Extending the frequency range
Internal harmonic mixing; preselection; amplitude calibration; phase noise; improved dynamic range; pluses and minuses of preselection; external harmonic mixing; signal identification
Chapter 8. Modern spectrum analyzers
Application-specific measurements; digital modulation analysis; saving and printing data; data transfer and remote instrument control; firmware updates; calibration, troubleshooting, diagnostics, and repair