OMT TYPE BROADBAND MULTIBAND MULTIBAND TRANSCEIVER SEPARATOR - SEPARATOR FOR MICROWAVE TELECOMMUNICATIONS ANTENNAS.

摘要

The present invention relates to a multiband broadband transmission-reception coupler-splitter type OMT ("OrthoMode Transducer" that is to say orthomode coupler) for microwave telecommunications antennas. This coupler comprises a port (P1) for propagating all the frequencies, a body and a port (P2) for propagation of the high frequency bands, these three parts being coaxial, and propagation broadband coupling slots (24A). low frequency bands practiced in the body and each associated with a waveguide, and characterized in that its body (24) joining the two ports has a shape of revolution whose profile evolves according to a multi-polynomial law , constantly decreasing from the port of largest section (P1) to the port of smaller section (P2). This coupler can operate to couple and separate very large bandwidths (the overall utilization of this coupler-separator being greater than one octave), two or four broadband coupling slots are required for the propagation of linear as well as circular polarizations. after recombination.