Antenna system for a level measurement apparatus
First Claim
1. An antenna system for a level measuring device for measuring a filling level of a filling product in a receptacle by means of microwave signals, comprising an antenna horn having an inner antenna horn flaring zone, and a planar structure present in the inner antenna horn flaring zone, which planar structure couples microwave signals into the antenna horn for determining the filling level of the filling product, which microwave signals are then emitted by the antenna horn into the direction of the filling product.
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Abstract
The present invention relates to an antenna system for a level measuring device for emitting microwaves by means of an antenna horn (2), at the front side of the smaller funnel aperture thereof, HF energy in the form of microwave signals is directly axially coupled by means of planar structures having one patch or several patches (4).
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Citations
26 Claims
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1. An antenna system for a level measuring device for measuring a filling level of a filling product in a receptacle by means of microwave signals, comprising
an antenna horn having an inner antenna horn flaring zone, and a planar structure present in the inner antenna horn flaring zone, which planar structure couples microwave signals into the antenna horn for determining the filling level of the filling product, which microwave signals are then emitted by the antenna horn into the direction of the filling product.
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15. An antenna system for a level measuring device for measuring a filling level of a filling product in a receptacle, comprising
an antenna horn having an inner antenna horn flaring zone and being at least in part filled with a filling of a dielectric material of a dielectric constant of greater than or equal to one, and a planar structure present in the antenna horn flaring zone, which planar structure couples microwave signals into the antenna horn for determining the filling level of the filling product, which microwave signals are then emitted by the antenna horn into the direction of the filling product.
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24. A filling level radar device for measuring the level of a filling product in a receptacle by means of microwave signals, comprising
a module for generating microwave signals, an antenna horn coupled with the module and having a first and a second horn aperture spaced from the first horn aperture, the second horn aperture having a larger diameter than the first horn aperture, an antenna horn flaring zone extending between the first and the second horn aperture, and a planar structure present in the antenna horn flaring zone, the planar structure including at least one patch arranged at the first horn aperture by means of which the microwave signals are directly coupled into the antenna horn for determining the filling level of the filling product, which microwave pulses are then emitted by the antenna horn into the direction of the filling product.
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26. A method for emitting microwave signals for determining the filling level of a filling product, the microwave signals being generated by a HF module and fed into a planar structure for being subsequently coupled by the planar structure directly into an antenna horn, and for being emitted from there into the direction of the filling product.
Specification