Abstract: The invention relates to an antenna module comprising at least a first series of unitary radiating elements (ER1i), from a second series of unitary radiating elements (ER2i) facing the unitary radiating elements of the first series, so as to broaden the frequency band of said antenna module, characterized in that it further includes: a monolithic part made of dielectric material having a face supporting the first series of radiating elements and legs (P1i), the surfaces of which are conducting; a microwave dielectric circuit supporting the second series of radiating elements; and means for fastening the legs of the monolithic part to said microwave dielectric circuit, the monolithic part providing a radome function for the radiating elements.