Method and device for transmitting and receiving electromagnetic waves
AssigneeVEGA Grieshaber KG
InventorsJosef Fehrenbach, Karl Griessbaum, Felix Raffalt
Life of this patent
Estimating the term…
Abstract
The invention relates to a filling level measuring device based on the principle of transit time measurement. An inventive filling level measuring device comprises an electronic unit (4) including a transmitting (9) and receiving means (10) for electromagnetic waves having a frequency of below 3 GHz, a process coupling means (5) connected to the electronic unit (4), which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit (4), and a high-frequency transformer (15, 16, 17, 18), to which the transmitting (9) and receiving means (10) and the process coupling means (5) are connected.
Claims54
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer to which the transmitting and receiving means and the coupling means are connected.
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer configured as a differential transformer, to which the transmitting and receiving means and the coupling means are connected, the differential transformer comprising three windings magnetically coupled with each other, two of which are connected with each other, to which the transmitting means and the coupling means are connected, and the receiving means is connected to the third winding.
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer configured as a differential transformer, to which the transmitting and receiving means and the coupling means are connected, the differential transformer comprising three windings magnetically coupled with each other, two of which are connected with each other, to which the receiving means and the coupling means are connected, and the transmitting means is connected to the third winding.
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer configured as a differential transformer, to which the transmitting and receiving means and the coupling means are connected, the differential transformer comprising three windings magnetically coupled with each other, two of which are connected with each other, to which the receiving means and the transmitting means are connected, and the coupling means is connected to the third winding.
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer configured as a transformer-directional coupler having four windings and four gates, to which the transmitting and receiving means and the coupling means are connected.
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer configured as a double hole transformer in SMD technology, to which the transmitting and receiving means and the process coupling are connected.
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer in the form of a ring-shaped core with a three-filament winding, to which core the transmitting and receiving means and the coupling means are connected.
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer having four gates, to which the transmitting and the receiving means and the coupling means are connected, and which is configured in such a manner that the gate to be fed is isolated from one of the remaining gates..
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer having four gates, to which the transmitting and the receiving means and the coupling means are connected, and which is configured in such a manner that the gate to be fed is in a defmed manner not completely isolated from all of the other gates.
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer configured as a transformer-directional coupler, to which the transmitting and receiving means and the coupling means are connected, the transformer-directional coupler comprising a double hole core receiving the four windings, and the turn numbers each being different from each other.
A filling level measuring device based on the principle of transit time measurement, comprising
- an electronic unit including a transmitting and receiving means for electromagnetic waves having a frequency of below 3 GHz,
- a coupling means connected to the electronic unit, which guides the transmitted signals onto the measurement distance, and guides back reflected signals to the electronic unit, and
- a high-frequency transformer configured as a transformer-directional coupler, to which the transmitting and receiving means and the coupling means are connected, the transformer-directional coupler comprising a double hole core receiving the four windings, and the turn numbers each being different from each other by the factor 2.
A method for transmitting and receiving electromagnetic waves having a frequency of below 3 GHz, via a single antenna means, wherein
- transmitted signals of a transmitting means are guided into the antenna means via a high-frequency transformer, and
- the reflected signals received by the antenna means are guided to a receiving means via the same high-frequency transformer.
A use of a high-frequency transformer in a monostatic filling level measuring device for further transmitting transmission signals having a frequency of below 3 GHz generated in a transmitting means, to an antenna means, and for further transmitting reflected reception signals received via the same antenna means to a receiving means.
Dependencies are inferred from the claim text.