Circular Horn Fed by Circular
Guide With Septum.
(3) Sectoral horn. A sectoral horn is used to feed the orange peel
reflector shown in Part A of Figure 158. The horn itself is shown in Part B
of Figure 158.
As before, the open end of the horn acts as a two-
Because the opening is quite high, the radiation
pattern of the horn is compressed vertically, although it remains wide in
the horizontal direction because of the small width of the horn opening.