Abstract: The invention relates to a device (2, 4) for homogenizing a radiofrequency field, for magnetic resonance imaging, of a given wavelength emitted by a volumetric antenna, comprising at least one continuous metal track (8) with a total length of between 50% and 75% of the wavelength of the radiofrequency field, the metal track comprising two end segments extending in mutually parallel directions and a main portion extending between the two end segments and comprising several local deformations identical to one another and connected to one another in series by at least one at least partially rectilinear connection portion (14) in such a way as to provide the homogenizing device (2, 4) with an electric dipole property, the homogenizing device having a fundamental frequency higher than the frequency corresponding to the wavelength of the radiofrequency field.