Scanning antenna

An antenna, comprising:

• an antenna body including a plurality of first antenna elements situated along a first straight line, the antenna body including a first conductive grounded surface and a second conductive grounded surface, the first and second grounded surfaces being situated essentially parallel to one another;
• a dielectric situated between the first and second grounded surfaces;
• a signal conductor situated between the first and second grounded surfaces;
• and
• an inlet for injecting a supply signal onto the signal conductor and an outlet for extracting the supply signal from the signal conductor;
• wherein the first antenna elements are configured as apertures situated above the signal conductor in the first grounded surface,
• wherein the antenna is configured to emit a signal in a spatial direction, the spatial direction being a function of a frequency of the signal, and
• wherein at least two of the first antenna elements differ from one another so that their power emissions are different.