The FS-SNS smart noise sources enable simple and accurate noise figure and gain measurements by automatically loading all necessary parameters and taking the environmental temperature into account. Measurement uncertainty is calculated automatically and can even be displayed on the result screen.
| Key Features |
| Frequency range up to 18 GHz, 26 GHz, 40 GHz, 55 GHz, 67 GHz, 90 GHz or 110 GHz |
| Supported by FSW, FSV/A3000, FPS, FPL1000 signal and spectrum analyzers, the FSWP phase noise analyzer and VCO tester, the FSMR3000 measuring receiver and the ZNL network analyzer |
| Automatic loading of ENR table |
| ENR uncertainty and reflection coefficients table for automatic uncertainty calculation |
| Automatic temperature readout for improved accuracy |
| Benefits |
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| Noise Figure and Gain Measurement | To perform noise figure and gain measurements with a spectrum analyzer, an excess noise ratio (ENR) source is needed that adds a well-defined (and ideally “white”) noise to the input of the DUT. The Y factor is the ratio of the noise power at the output of the DUT with and without this added noise. It forms the basis for calculating the amount of noise contributed by the DUT and its resulting noise figure and gain.
Although the characteristics of the output signal of a noise source in the specified frequency range comes close to white noise, it still has a slight frequency response and temperature dependency. To eliminate this deviation from ideal behavior, noise sources come with written tables that indicate the ENR behavior of the noise source with respect to frequency and temperature. These correction values must be manually transferred to the noise figure measurement software.
The FS-SNS smart noise sources eliminate this time consuming and error prone activity by providing the ENR tables and environmental temperature to the spectrum analyzer in electronic format.
The FS-SNS smart noise sources are connected to the analyzer via a 7-pin cable for power supply and control interface. An adapter cable is supplied for instruments not equipped with the necessary connector.
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| Specifications |
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FSN-SNS
Smart Noise Source
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| Model Overview |
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| Model | Order Number | Frequency Range | ENR | RF Port |
| FS-SNS18 | 1338.8008.18 | 10 MHz - 18 GHz | 5 dB - 7 dB | SMA male |
| FS-SNS26 | 1338.8008.26 | 10 MHz - 26.5 GHz | 13 dB - 17 dB | APC 3.5 mm male
(compatible with SMA)
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| FS-SNS40 | 1338.8008.40 | 100 MHz - 40 GHz | 10 dB - 17 dB | 2.92 mm male
(compatible with SMA)
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| FS-SNS55 | 1338.8008.55 | 100 MHz - 55 GHz | 7 dB - 21 dB | 1.85 mm male
(compatible with 2.4 mm)
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| FS-SNS67 | 1338.8008.67 | 100 MHz - 67 GHz | 7 dB - 20 dB | 1.85 mm male
(compatible with 2.4 mm)
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| FS-SNS90 | 1338.8008.90 | 60 GHz - 90 GHz | typ. 15 dB | WR12 |
| FS-SNS110 | 1338.8008.11 | 75 GHz - 110 GHz | typ. 13 dB | WR10 |
