Device for determining the filling level of a filling material in a container

A device for determining the filling level of a filing material in a container, the material defining a surface in the container, comprising:

• a signal-generating unit for generating measuring signals;
• an input coupling unit adapted to receive the generated measuring signals;
• an antenna connected to said input coupling unit and having at least one first dielectric layer containing a feed structure and a plurality of cutouts, with a number of said plurality of cutouts having at least one of different dimensions and shapes;
• and
• a receiving/evaluating circuit adapted to receive the generated measuring signals subsequent to being reflected from the surface defined by the filling material, wherein:
• said input coupling unit coupling the generated measuring signals onto the antenna, said antenna then emitting measuring signals in the direction of the surface defined by the filling material,
• in assembly with the container, said at least one dielectric layer is arranged so that said plurality of cutouts face the surface defined by the filling material and said feed structure face away from the surface defined by the filling material, and
• the measured signals received by the receiving/evaluating circuit are used by said receiving/evaluating circuit to determine the filling level in the container of the filling material via the propagating time of the measured signals.