Choose a country or area to see content specific to your location
Confirm Your Country or Area
Confirm your country to access relevant pricing, special offers, events, and contact information.
PRODUCTS AND SERVICES
- Spectrum Analyzers (Signal Analyzers)
- Network Analyzers
- Logic Analyzers
- Protocol Analyzers and Exercisers
- Bit Error Ratio Testers
- Noise Figure Analyzers and Noise Sources
- High-Speed Digitizers and Multichannel DAQ Solutions
- AC Power Analyzers
- DC Power Analyzers
- Materials Test Equipment
- Device Current Waveform Analyzers
- Parameter / Device Analyzers and Curve Tracers
- Generators, Sources, and Power Supplies
- Modular Instruments
- Network Test and Security
- Network Visibility
- Additional Products
- All Products, Software, Services
Explore by Use Case
Explore by Industry
Explore All Use Cases
What are you looking for?
Fundamentals of RF and Microwave Noise Figure Measurements
The noise figure (F) of a network is defined as the ratio of the signal-to-noise power ratio at the input to the signal-to-noise power ratio at the output. Thus the noise figure of a network is the decrease or degradation in the signal-to-noise ratio as the signal goes through the network. A low noise figure means that very little noise is added by the network. This paper will walk you through definition and concepts of noise figure and RF and Microwave noise figure measurements (including noise figure and noise characteristics).
Noise measurements are key to assuring that added noise is minimal. The need for highly repeatable, accurate and meaningful measurements of noise without the complexity of manual measurements and calculations has led to the development of noise figure measurement instruments with simple user interfaces.
- © Keysight Technologies 2000–2023
- Trademark Acknowledgements