Posts Tagged ‘fa20’

FA20 EM Simulations

Wednesday, October 24th, 2007

On forum I found very interesting article – there are some em simulations of this famous russian antenna. Interesting is that the auhtor made several test with different number of radiating elements.

This is FA20 original design :

Next is with 12 patches :

And finally 16 elements :

Here are results for swr in different simulations :

VSWR 8 Dipoles –> minimum at 2.44ghz 1.46; from 2.4 to 2.5ghz <2.5
VSWR 12 Dipoles –> minimum at 2.45ghz 1.89; from 2.4 to 2.5ghz <2.8
VSWR 16 Dipoles –> minimum at 2.44ghz 1.96; from 2.4 to 2.5ghz <3.4

SWR results are not very good 🙁

This may be due to a different dimensions used by fable to test this design.

He also used very interesting metod to build and test this design. He used aluminium foil and cardboard.