thranduil
Member level 1
Hello,
I have been wondering for a few years why Friis equation actually works.
Its Pr = Pt + Gt + Gr - PropLoss, and Pr will be in ideal case the power available at the output port of receiving antenna.
How is that possible when Pt is not 100% percent concentrated in direction of transmitting.
In the case of two isotrope antennas, if the first is fed wit x watts theu will be spread in all directions. So, how can you in that case receive Pt - PropLoss because this means that all poweer is concentrated to the receiving antenna.
I will feel iluminated if somebody could explain me this concept
I have been wondering for a few years why Friis equation actually works.
Its Pr = Pt + Gt + Gr - PropLoss, and Pr will be in ideal case the power available at the output port of receiving antenna.
How is that possible when Pt is not 100% percent concentrated in direction of transmitting.
In the case of two isotrope antennas, if the first is fed wit x watts theu will be spread in all directions. So, how can you in that case receive Pt - PropLoss because this means that all poweer is concentrated to the receiving antenna.
I will feel iluminated if somebody could explain me this concept