A modular off-set Cassegrain antenna operating simultaneously in four frequency bands

The increasing in capacity on Radio Links and the limitation in places on the tower lead to group on the same antenna, as much as possible, a maximum of frequency plans. The principal frequency bands are : 1.7-2.3 GHz for 960 telephone channels (T. C) equipment, 3.6-4.2 GHz for 1800 T. C, 5.925-6.425 GHz for 1800 T.C, 6.43-7.11 GHz for 2700 T. C and 10.7-11.7 GHz for 1800 T. C. The antenna, which is, object for this paper, can operate simultaneously with four, three or two of these four frequency bands. This antenna consists of : a radiating part and a microwave multiplexer part.