Hi all,
So I have been doing a ton of research into radio astronomy and I think I have each stage figured out except for one part, the feed horn.
I understand that the dish reflects the incoming radio waves and focuses them onto the feed horn but what I cant seem to figure out is what type of antenna or receiver is on the horn! Is it a loop antenna? Is it a long piece of wire or just some metal? I cant seem to figure this one out because for an antenna to be effective it needs to have a length that is some multiple of the incoming wavelength! So whats up with the feed horn? What is the internal structure?
All the best and many thanks!
Robin
So I have been doing a ton of research into radio astronomy and I think I have each stage figured out except for one part, the feed horn.
I understand that the dish reflects the incoming radio waves and focuses them onto the feed horn but what I cant seem to figure out is what type of antenna or receiver is on the horn! Is it a loop antenna? Is it a long piece of wire or just some metal? I cant seem to figure this one out because for an antenna to be effective it needs to have a length that is some multiple of the incoming wavelength! So whats up with the feed horn? What is the internal structure?
All the best and many thanks!
Robin