| 摘要 |
The device according to the present invention serves the purpose of determining the filling level of a filling material in a container. It has the following components: a signal-generating unit which generates measuring signals, a signal injector and at least one antenna having an antenna, the signal injector injecting the measuring signals onto the antenna structure. The antenna emits the measuring signals in the direction of the surface of the filling material, and an evaluation circuit which receives the measuring signals reflected at the surface of the filling material and received by the antenna determines the filling level in the container via the propagation time of the measuring signals. The antenna has at least one first dielectric substrate to which the antenna structure is applied. The antenna structure is at least one spiral antenna.
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