The

.-band toroidal pattern antenna for the Meteosat satellite consists of two elements, one transmitting and one receiving, mounted side-by-side. Each of the two elements is constituted by a vertical array of slots cut on both the broad walls of a reduced height waveguide, operating on the TE
10mode. General design criteria have favoured a dual antenna system solution: one part formed by waveguides in hard-machined aluminum alloy, the other part consisting of a cylindrical cover in die lectric honey-comb with an aluminum base to achieve a high dynamical behavior for the antenna.