Hello guys I am trying to do work about horn antennas, so I took a lnb to a directtv dish rain cap off and found the horn antenna or feeder. I have two very important question about these I was hoping that someone can help:
1) why are there circle then another smaller circle and another smaller basically the horn has smaller and smaller in steps steps like 4 of them.
2) In the horn there is a peice of metal in the middle flat thin metal that kind of splits the inside in half and a V shape at the top of this thin strip
Can someone please tell me why these are there what are they doing thanks