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HIGHLIGHTS

The Keysight 346B noise source is the ideal companion to Keysight's noise figure solutions. Since it is broadband (10 MHz to 18 GHz), it eliminates the necessity for several sources at different frequency bands. The low SWR of the noise source reduces a major source of measurement uncertainty, which are reflections of the test signals. Add special option H01 for high ENR (21 dB typical) to measure high noise figure devices, or option H42 for measuring Direct Broadcast Satellite (DBS) low noise block converters.

  • Frequency range: 10 MHz to 18 GHz    
  • VSWR: < 1.3:1
  • Connectors: BNC (f) input bias / 3.5 mm (m)
  • Low SWR for reducing noise figure measurement uncertainty
  • Individually calibrated ENR values at specific frequencies

Key Specifications

Maximum Frequency
18 GHz
Maximum Frequency
18 GHz
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ENR Range:
14 to 16 dB
ENR Automatic Download:
No
Excess Noise Ratio (ENR):
14-16 dB
Frequency Range:
10 MHz to 18 GHz
Maximum Frequency:
18 GHz
Minimum Frequency:
10 MHz
Minimum Frequency Range:
10 MHz
Temperature Compensation:
No
Type:
Noise Source
Works with:
NFA, ESA-E Series, PNA-X, PSA-Series, X-Series (PXA, MXA, EXA, CXA)
346B Noise Source

Interested in a 346B?

Extend the capabilities for your Noise Source, 10 MHz to 18 GHz, nominal ENR 15 dB

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Featured Resources for 346B Noise Source, 10 MHz to 18 GHz, nominal ENR 15 dB

Application Notes 2024.10.08

Noise Figure Measurement Accuracy: The Y-Factor Method

Noise Figure Measurement Accuracy: The Y-Factor Method

This app note discusses the fundamentals of noise figure measurement using Y-factor method and how to avoid noise figure mistakes.

2024.10.08

Application Notes 2019.09.30

Fundamentals of RF and Microwave Noise Figure Measurements

Fundamentals of RF and Microwave Noise Figure Measurements

Explore information on RF and Microwave noise figure measurements, starting from the concept of noise figure and noise temperature, describing the noise characteristics of two-ports networks, and highlighting the different methods used to measure noise figure, such as Y-Factor and the Direct Noise measurement method.

2019.09.30

Application Notes 2024.07.04

10 Hints for Making Successful Noise Figure Measurements

10 Hints for Making Successful Noise Figure Measurements

Noise figure is often the key to characterizing a receiver and to detect weak incoming signals. Learn to minimize uncertainties in your noise figure measurements.

2024.07.04

White Papers 2022.12.26

Three Ways USB Noise Sources Help You Remove Uncertainty in Y-Factor Measurements

Three Ways USB Noise Sources Help You Remove Uncertainty in Y-Factor Measurements

USB noise sources are a fantastic alternative for noise figure measurements because of their ease, reliability, and versatility.

2022.12.26

View All Resources

View All Resources

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