Does this seem logical?
1. The signal strength (example in dBm or mW) from a
transmitting source is measured.
2. Assuming most of the attenuation is due to free space loss, the
free space loss factor is "added" back to the measured signal to get the ERP of that specific radiation
lobe (it could be main, side, or back lobe).
3. The transmitter output is a known value (example 2
4. Using the calculated ERP for a specific lobe, I can use the following to determine the
loss / gain due to the antenna & cable: loss/gain = 10 log (transmitter output / ERP specific lobe).
5. If I rotate the transmitting antenna to 360 degrees, then I should be able to have a rough picture of
its azimuthal radiation pattern at a certain elevation angle.
I'm probably using the terms the
wrong way because I think ERP is synonymous to the main lobe of the antenna (right?). But I'm just
treating the ERP as specified only to a certain lobe without knowing if its the main, side, or back
I'm really not sure if this is right. I just want a confirmation whether my logic is
wrong, and if so, why? Thanks!