The parameter nf(k) in the dataset is the noise figure at output port k. You can view results using the Data Display. The noise figure for each port will appear in the variables list as nf(1), nf(2), and so on. nf displays noise figures for all ports. When noise figure is calculated at a port, the other ports in the network are terminated in their respective impedances. For a 2-port circuit, the noise figure is the signal-to-noise ratio at the input, divided by the signal-to-noise ratio at the output. It has units of dB. For a circuit with more than two ports, the noise figure is the ratio of the total noise at the output port to the transmitted input noise. The total noise is the transmitted input noise plus the noise contributed by the network. The transmitted input noise represents the portion of the incident thermal noise (kTB, where k=Boltzmann's constant, 1.380658 x 10-23 J/K, T=290 K, B=1 Hz) which passes through the system. edadownload.software.keysight.com/eedl/ads/2011_01/pdf/cktsimsp.pdf
![Noise Figure Measurement [Y Factor Method]](/img/n.gif)
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how about nf(1), what is it?
The parameter nf(k) in the dataset is the noise figure at output port k. You can view results using the Data Display. The noise figure for each port will appear in the variables list as nf(1), nf(2), and so on. nf displays noise figures for all ports.
When noise figure is calculated at a port, the other ports in the network are terminated in their respective impedances.
For a 2-port circuit, the noise figure is the signal-to-noise ratio at the input, divided by the signal-to-noise ratio at the output. It has units of dB. For a circuit with more than two ports, the noise figure is the ratio of the total noise at the output port to the transmitted input noise. The total noise is the transmitted input noise plus the noise contributed by the network. The transmitted input noise represents the portion of the incident thermal noise (kTB, where k=Boltzmann's constant, 1.380658 x 10-23 J/K, T=290 K, B=1 Hz) which passes through the system.
edadownload.software.keysight.com/eedl/ads/2011_01/pdf/cktsimsp.pdf
thank you@@AriNoori