The invention relates to a system for non-invasive data acquisition from a human or animal body 7, comprising an antenna for irradiating a portion of the said body, said antenna being connected to a source and a processor for collecting said data pursuant to said irradiation, wherein the antenna is a leaky wave antenna 1, 2, 3, 4 operable using a dielectric layer, the system being configurable so that the portion of the body 7 is at least partially used for the said dielectric layer.
