The invention relates to a device (1) for emitting energy by electromagnetic coupling which comprises: a single generator (5) outputting an AC electric signal between two terminals; a series of resonant modules (2i) each including a capacitor and a first inductance, and first to fourth terminals (Ai, Bi, Ci, Di), the first (Ai) and second (Bi) terminals of a first module being connected to terminals of the generator, and the first (Ai) and second (Bi) terminals of the other module or modules being connected to the third (Ci) and fourth (Di) terminals of the module of the previous row.