A splitter/combiner system for RF signals comprises: a coaxial line comprising an inner block extending longitudinally along an axis Y, having a conductive surface and being inserted into an outer block whose inner cavities have conductive walls, the inner block separated from the outer block by an insulating space, the coaxial line having a connection end; a plurality of N strip lines, each comprising a first and second conductive strip positioned facing either side of an insulating or dielectric substrate; one of the ends of each strip line, referred to as the first end, being positioned tangentially on the perimeter of the inner block in the space at the connection end of the coaxial line, the first and second conductive strips of the first end of the strip line making electrical contact with the inner block and the outer block, respectively, the outer block additionally connected to the system ground.