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Noise Figure

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Stage 1: LNA

dB
dB

Stage 2: Filter

dB
dB

Stage 3: Mixer

dB
dB

Receiver chain

1.404 dB NF

The existing charts show input-referred noise contribution and the shielding effect of upstream gain.

Lower bars mean less input-referred noise in the total factor.

Cumulative gain shielding

Gain before a noisy stage divides its Friis term

Total noise figure

1.404 dB

Noise factor 1.3817

Equivalent noise temperature

110.7 K

Referenced to 290 K

Total gain

45.00 dB

31,623 linear

Dominant contribution

LNA

+1.2589 noise-factor term

Open Source and Easy to Use Elsewhere

This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.

Open source: review the implementation and see how the results are produced.

Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.