Actually, it's a 1:4 folded balun, an important part of an antenna for improving the transfer of energy between the transmitter and antenna. ("balun"=="balanced/unbalanced", dipole antenna 'arms' are balanced, but transmitters usually aren't.)
Note:- I said transmitter, you don't need them for receiving.
You don't really want a low S.W.R when broadcasting your Chi to the Universe. A bad enough mismatch will reflect the energy back and burn out your finals.