Rauschquellen für präzise HF-Rauschmessungen
- Technologie
- Noise sources
- Partner
- Keysight
Keysight Technologies offers ‘cost’ effective solutions for noise figure needs as options for network analysers, spectrum analysers, or signal analysers.
Keysight Technologies noise sources are highly stable, calibrated signal generators designed to introduce a known level of noise into a system. They are essential for noise figure measurements, enabling engineers to accurately characterise how much noise a device – such as an amplifier, receiver, or RF component adds to a signal.
Used alongside industry-standard instruments like noise figure analysers, signal analysers, and network analysers, these noise sources provide the reference baseline required to evaluate performance in demanding applications across communications, aerospace, defence, and advanced research.
In RF and microwave system design, understanding noise performance is critical. Noise sources generate a controlled, repeatable noise signal with a defined Excess Noise Ratio (ENR). By switching the noise source on and off, engineers can compare system output and calculate the noise contribution of the device under test.
This process enables:
- Accurate noise figure analysis
- Validation of low-noise amplifier (LNA) performance
- Optimisation of receiver sensitivity
- Reliable component benchmarking across wide frequency ranges
Eigenschaften
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High measurement accuracy Low SWR (Standing Wave Ratio) reduces mismatch uncertainty, ensuring more reliable results.
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Wide frequency coverage Operate from as low as 10 MHz up to 50/60 GHz, supporting a broad range of RF and microwave applications.
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Automated calibration (SNS Series)– Electronically stored ENR data eliminates manual entry, improving efficiency and reducing errors.
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Temperature compensation Real-time monitoring ensures consistent performance and measurement integrity.
SNS Series (Smart Noise Sources)
The SNS range simplifies measurement setup and improves accuracy through intelligent features:
Automatic ENR data download to compatible instruments Built-in temperature monitoring and compensation Reduced setup time and minimised user error
Models include:
- N4000A – Optimised for low-noise and high-sensitivity measurements (10 MHz to 18 GHz)
- N4001A – General-purpose, high-accuracy measurements (10 MHz to 18 GHz)
- N4002A – Extended frequency coverage for wideband applications (10 MHz to 26.5 GHz)
346 Series
A long-established, cost-effective family of broadband noise sources offering durability and flexibility:
Compatible with both legacy and modern test systems מגוון ENR levels to suit different measurement needs Proven reliability in production and lab environments
Popular models:
- 346A/B/C/D – Covering a range of ENR options
- 346C – Broadband performance from 10 MHz to 26.5 GHz
- 346CK01 – Extended frequency capability up to 50 GHz with a 2.4 mm connector
Was befindet sich in dieser Produktreihe?
Alle Varianten in der Produktreihe und ein Vergleich ihrer Angebote
| Model | Minimum frequency range | Maximum frequency range | Excess Noise Ratio |
|---|---|---|---|
346A | 10MHz | 18GHz | 5 – 7dB |
346B | 10MHz | 18GHz | 14 – 16dB |
346C | 10MHz | 26.5GHz | 12 – 17dB |
346CK01 | 1GHz | 50GHz | 21dB |
346CK40 | 1GHz | 40GHz | 5 – 14dB |
N4000A series | 10MHz | 18GHz | 4.6 – 6.5dB |
N4001A series | 10MHz | 18GHz | 14 – 16Db |
N4002A series | 10MHz | 26GHZz | 12 – 17Db |
R347B | 26.5GHz | 40GHz | 10 – 13dB |
Q347B | 33GHz | 50GHz | 6 – 13dB |
