FieldengRF, Radio & Wireless
Mismatch Loss
Power lost to reflection from SWR or |Γ|.
RF, Radio & Wireless
Power lost to reflection from SWR or |Γ|.
App id: RF-12. Reference version 1.0.
How to fill it
Leave one field blank. The tool solves the rest.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
ML = −10 log10(1 − |Γ|²)Inputs
| Name | Unit |
|---|---|
| SWR | 1 |
| Reflection coefficient | Γ |
Outputs
| Name | Unit |
|---|---|
| Mismatch loss (hero result) | dB |
| SWR | 1 |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
Screening bands in the app: Good · Fair · High · Severe.
| When | Observation | Severity |
|---|---|---|
fade margin (dB) ≥ 0.2 | Mismatch loss | info |
SWR < 1.5 | Good | info |
SWR < 2 | Fair | info |
SWR < 3 | High | caution |
SWR ≥ 3 | Severe | warning |
Assumptions
- Uses |Γ| only. Does not include dissipative cable loss.
Provenance
- ML = −10 log10(1 − |Γ|²).