In the far field, Zo = 120π
(377Ω)
Field Strength Calculation:
The field strength is calculated by adding the Antenna Factor and Cable Factor, and subtracting the Amplifier
Gain from the measured reading. The basic equation is as follows:
FS = RA + AF + CF - AG
Where:
FS = Field Strength RA = Receiver Amplitude AF = Antenna Factor CF = Cable Attenuation Factor AG
= Amplifier Gain
1 Gauss = 100 microTesla = 80 Amps/meter
0 |
1.0 |
-51.5 |
0.00265 |
33.1 |
0.0033 |
5 |
1.78 |
-46.5 |
0.0047 |
58.8 |
0.0059 |
10 |
3.162 |
41.5 |
0.0084 |
105.0 |
0.0105 |
15 |
5.623 |
36.5 |
0.0149 |
186.2 |
0.0186 |
20 |
10.000 |
31.5 |
0.0265 |
331.5 |
0.0331 |
25 |
17.8 |
-26.5 |
0.0472 |
0.590 |
0.0590 |
30 |
31.62 |
-21.5 |
0.0839 |
1.048 |
0.1048 |
35 |
56.23 |
-16.5 |
0.1492 |
1.865 |
0.1865 |
37 |
70.79 |
-14.5 |
0.1878 |
2.347 |
0.2347 |
40 |
100.00 |
-11.5 |
0.2652 |
3.315 |
0.3315 |
50 |
0.316 |
-1.5 |
0.839 |
10.48 |
1.048 |
60 |
1.000 |
8.5 |
2.652 |
33.15 |
3.315 |
70 |
3.162 |
18.5 |
8.388 |
104.8 |
10.485 |
80 |
10.000 |
28.5 |
26.525 |
331.5 |
33.156 |
90 |
31.6 |
38.5 |
0.0839 |
1.048 |
0.1048 |
100 |
100.0 |
48.5 |
0.2652 |
3.315 |
0.3315 |
110 |
316.2 |
58.5 |
0.8388 |
10.48 |
1.048 |
120 |
1000.0 |
68.5 |
2.652 |
33.15 |
3.315 |
|