FieldengRF, Radio & Wireless
Fade Margin
Modeled fade margin from received power and receiver sensitivity.
RF, Radio & WirelessNetworking & Communications
Modeled fade margin from received power and receiver sensitivity.
App id: RF-07. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
Fade margin = P_rx − P_sensitivityInputs
| Name | Unit |
|---|---|
| Received power | dBm |
| RX sensitivity | dBm |
Outputs
| Name | Unit |
|---|---|
| Fade margin (hero result) | dB |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
Screening bands in the app: Low · Marginal · Good · Large.
| When | Observation | Severity |
|---|---|---|
fade margin (dB) < 10 | Low | warning |
fade margin (dB) < 20 | Marginal | caution |
fade margin (dB) < 30 | Good | info |
fade margin (dB) ≥ 30 | Large | info |
Assumptions
- Bands are engineering guidance, not universal pass/fail limits.
- Received power may come from RF-06 or a field measurement.
Provenance
- Fade margin = received power minus receiver sensitivity in dB.