How to calculate the field strength of a shielded theoretical isotropic transmitter, if there is a hole in the shield for example.
I am looking for a complex formula that also takes into account the hole in the shield and possibly the skin depth of the shield if possible.
If we have a simple transmitter/receiver system, then the field strenght can be both calculated at the source (EIRP) or at the Pr which is the receiver.
Pr= Pt / (4* PI * r^2)
What I need is a formula for this scenario:
Where we have an isotropic transmitter inside a shield. The shield has a hole, or perhaps multiple holes (if there is formula for that) with a diameter
z, and also if possible to take into account the skin depth where the thickness of the shield is
x. Let's say the material of the shield is a variable so that we can calculate the skin depth for this formula for different materials.
What I need is the field strength at Pr in
dBμV/m units that is emmitted from the shielded environment. Or vice-versa the EIRP of the transmitted signal outside the shield (obviously different than the original transmitter power inside the shield), measured in
x and all other variables are in SI units.