Help for calculate antenna gain in 3D

[mbo]

Hi BRO,
I search a formula for my soft to calculate antenna gain in 3D.
Can you help me please.
Best Regards.
MBO

[mbo]

Nobody for to help me?

[s52d]

Hi BRO,
I search a formula for my soft to calculate antenna gain in 3D.
Can you help me please.
Best Regards.
MBO

Hi!
Your question might be misunderstood.

In general, if you have 3D model of antenna radiation, you can calculate directivity by deviding signal strength in main lobe
with "average" signal strenght. (Average over all directions, thus estimating signal generated by isotropic antenna).
For dBi, you need to do 10*log_10 of Speak/Saverage.

Reasonable estimation can be given by calculationg just in two planes: H and V.

For TX antennas we can assume no loss, so Gain=Directivity.

In case you want to generate 3 D pattern from field measurments: you do not have enough samples to cover all directions,
but you can estimate by comparing with tuned radio prediction model.


BR
s52d

[DCA]

i think what your are looking for is perfectly described inside the following document

hxxp://www.awe-communications.com/Download/Manuals/AManManual.pdf

[mbo]

Thx DCA,
I have already read this documation and the results I get are more or less following the H and V patterns.
Best Regards,
mbo

PS: thx s52d