Text preview for : 5980-0288E.pdf part of HP 5980-0288E HP Publikacje 5980-0288E.pdf
Back to : 5980-0288E.pdf | Home
10 Hints for
Making Successful
Noise Figure Measurements
Application Note
Optimize Your Measurements and
Minimize the Uncertainties
Table of Contents
Introduction................................................................................................ 3
HINT 1: Select the Appropriate Noise Source.................................... 4
HINT 2: Minimize Extraneous Signals ................................................. 5
HINT 3: Minimize Mismatch Uncertainties......................................... 6
HINT 4: Use Averaging to Minimize Display Jitter ............................ 7
HINT 5: Avoid Non-Linearities .............................................................. 8
HINT 6: Account for Mixer Characteristics ......................................... 9
HINT 7: Use Proper Measurement Correction ................................. 12
HINT 8: Choose the Optimal Measurement Bandwidth ................. 13
HINT 9: Account for Path Losses ....................................................... 14
HINT 10: Account for the Temperature of the Measurement
Components ............................................................................................. 15
Appendix A: Checklist ........................................................................... 16
Appendix B: Total Uncertainty Calculations ..................................... 17
Appendix C: Abbreviations ................................................................... 18
Appendix D: Glossary and Definitions ............................................... 18
Additional Resources ............................................................................. 19
Find out more www.agilent.com/find/noisefigure
2
Introduction
The checklist Noise figure is often the key to characterizing a receiver and its ability to detect
in Appendix A weak incoming signals in the presence of self-generated noise. The process of
reducing noise figure begins with a solid understanding of the uncertainties in
is a helpful tool your components, subsystems and test setups. Quantifying those unknowns
to verify that depends on flexible tools that provide accurate, reliable results.
all hints have Agilent's noise figure solution set