what is electrical large structures ?

Hi,

an electrical large structure is a structure which is several wavelength big.

Example: Corrugated Horn antenna, Reflector Antenna, Large RCS problems (Fighter plane at 2.4 GHZ....).

Hope this helps,

F.

Hello :

I'm sure you know , If the derivation of the electromagnetic field be large we can't approximate a structure as a lumped structure . but I couldn't understood what do you want to know exactly.

regards.

It's a relative concept, depend on the problem you encontered! :)