Formules de calculs et de conversion
Trouvez ici toutes les formules de calcul et de conversion de toutes les valeurs utilisées dans le domaine des Radio-Fréquences.
Téléchargez le tableau de conversion de toutes ces valeurs précalculées.
Equivalences & Correspondances
dBm V/m W/m² Equivalence
0dBm 6,8V/m 0,12 W/m² un GSM appelant (SAR 0,8)
- 8dBm 2,7V/m 0,019 W/m² un GSM appelant (SAR 0,5)
-17dBm 0,95V/m 0,24 µW/cm²
-20dBm 0,68V/m 0,12 µW/cm² un DECT chez vous (24h/24)
-25dBm 0,38V/m 38 nWcm²
-26dBm 0,34V/m 30 nW/cm²
-30dBm 0,21V/m 12 nW/cm² trois DECT et 2 WiFi chez vos voisins
-34dBm 0,13V/m 4,5 nW/cm² deux DECT chez vos voisins
-38dBm 0,085V/m 1,9 nW/cm²
-43dBm 0,048V/m 610 pW/cm² un DECT chez un voisin
-44dBm 0,043V/m 490 pW/cm²
-46dBm 0,034V/m 307 pW/cm²
-47dBm 0,030V/m 239 pW/cm²
-49dBm 0,024V/m 153 pW/cm² un GSM en veille avec réseau de qualité
-51dBm 0,019V/m 95,7 pW/cm² Seuil de sensibilité de certains "électrosensibles"
-52dBm 0,017V/m 76,6 pW/cm²
-53dBm 0,015V/m 59,6 pW/cm²
-54dBm 0,013V/m 45,0 pW/cm²
-55dBm 0,012V/m 38,1 pW/cm²
Puissances en dBm & équivalences en Watts, Milliwatts
- dBm = log10 (mW)*10
- mW =10^(dBm/10)
dBm>>>>>>Watts
| 40 dBm |
10.00 watts |
|
| 36 dBm |
4.00 watts |
{ Maximum ERP allowed by FCC in U.S. |
| 30 dBm |
1.00 watts |
{ PIRE Maximale 5.4/5.7 GHz en France ETSI
|
| 27 dBm |
500 milliwatts |
|
| 26 dBm |
400 milliwatts |
|
| 25 dBm |
320 milliwatts |
|
| 24 dBm |
250 milliwatts |
|
| 23 dBm |
200 milliwatts |
{ Typical output from WLAN devices at 915MHz |
| 22 dBm |
160 milliwatts |
|
| 21 dBm |
130 milliwatts |
|
| 20 dBm |
100 milliwatts |
{ A 7 PIRE Maximale 2.5 GHz et 24 GHz en France ETSI |
| 15 dBm |
32 milliwatts |
|
| 10 dBm |
10 milliwatts |
|
| 5 dBm |
3.2 milliwatts |
|
| 4 dBm |
2.5 milliwatts |
|
| 3 dBm |
2.0 milliwatts |
|
| 2 dBm |
1.6 milliwatts |
|
| 1 dBm |
1.3 milliwatts |
|
| 0 dBm |
1.0 milliwatts |
|
| 1- dBm |
0.79 milliwatts |
|
| 5- dBm |
0.32 milliwatts |
|
| 10- dBm |
0.1 milliwatts |
|
| 20- dBm |
0.01 milliwatts |
|
| 30- dBm |
0.001 milliwatts |
|
| 40- dBm |
0.0001 milliwatts |
|
| 50- dBm |
0.00001 milliwatts |
|
| 60- dBm |
0.000001 milliwatts |
|
| 70- dBm |
0.0000001 milliwatts |
|
| 80- dBm |
0.00000001 milliwatts |
{Receive threshold for most WLAN devices |
dBm = log10 (mW)*10
mW =10^(dBm/10)
| 40 dBm |
10.00 watts |
|
| 36 dBm |
4.00 watts |
{ Maximum ERP allowed by FCC in U.S. |
| 30 dBm |
1.00 watts |
|
| 27 dBm |
500 milliwatts |
|
| 26 dBm |
400 milliwatts |
|
| 25 dBm |
320 milliwatts |
|
| 24 dBm |
250 milliwatts |
|
| 23 dBm |
200 milliwatts |
{ Typical output from WLAN devices at 915MHz |
| 22 dBm |
160 milliwatts |
|
| 21 dBm |
130 milliwatts |
|
| 20 dBm |
100 milliwatts |
{ Maximum ERP allowed by E.T.S.I. In Europe |
| 15 dBm |
32 milliwatts |
|
| 10 dBm |
10 milliwatts |
|
| 5 dBm |
3.2 milliwatts |
|
| 4 dBm |
2.5 milliwatts |
|
| 3 dBm |
2.0 milliwatts |
|
| 2 dBm |
1.6 milliwatts |
|
| 1 dBm |
1.3 milliwatts |
|
| 0 dBm |
1.0 milliwatts |
|
| 1- dBm |
0.79 milliwatts |
|
| 5- dBm |
0.32 milliwatts |
|
| 10- dBm |
0.1 milliwatts |
|
| 20- dBm |
0.01 milliwatts |
|
| 30- dBm |
0.001 milliwatts |
|
| 40- dBm |
0.0001 milliwatts |
|
| 50- dBm |
0.00001 milliwatts |
|
| 60- dBm |
0.000001 milliwatts |
|
| 70- dBm |
0.0000001 milliwatts |
|
| 80- dBm |
0.00000001 milliwatts |
{Receive threshold for most WLAN devices |
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