Mass coupling at clocked HF-elements
First Claim
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1. A circuit for a fill-level measuring device for fast switching-on of a high-frequency (“
- HF”
) element on a ground port, comprising;
a switching unit with a first ground port;
a high-frequency element with a second ground port that is designed as a HF ground port;
a coupling element; and
an insulation between the first and second ground ports;
wherein the switching unit is connected between the first ground port and the high-frequency element;
wherein the second ground port is coupled, by way of the coupling element, to the first ground port,wherein the coupling of the second ground port to the first ground port is a high frequency coupling, andwherein a direct-current flow between the first ground port and the high-frequency element is only possible when the switching unit is switched so that a short circuit between the first ground port and the second ground port is established.
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Abstract
A circuit for a fill-level measuring device is for the fast switching-on of a high-frequency element on a ground port is disclosed. The circuit comprises a switching unit with a circuit mass; a high-frequency element with a high-frequency mass; and a coupling element that couples the two masses together and at the same time insulates them from each other in a direct-current manner. In this way the switching unit can be arranged on the GND port of the HF-element, without influencing the HF characteristics of said HF element.
11 Citations
13 Claims
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1. A circuit for a fill-level measuring device for fast switching-on of a high-frequency (“
- HF”
) element on a ground port, comprising;a switching unit with a first ground port; a high-frequency element with a second ground port that is designed as a HF ground port; a coupling element; and an insulation between the first and second ground ports; wherein the switching unit is connected between the first ground port and the high-frequency element; wherein the second ground port is coupled, by way of the coupling element, to the first ground port, wherein the coupling of the second ground port to the first ground port is a high frequency coupling, and wherein a direct-current flow between the first ground port and the high-frequency element is only possible when the switching unit is switched so that a short circuit between the first ground port and the second ground port is established. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- HF”
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12. A fill-level measuring device, comprising:
-
a circuit including (a) a switching unit with a first ground port; (b) a high-frequency element with a second ground port that is designed as a HF ground port; (c) a coupling element; and (d) an insulation between the second ground port and the first ground port, wherein the switching unit is connected between the first ground port and the high-frequency element; wherein the second ground port is coupled, by way of the coupling element, to the first ground port, wherein the coupling of the second ground port to the first ground port is a high frequency coupling, and wherein a direct-current flow between the first ground port and the high-frequency element is only possible when the switching unit is switched so that a short circuit between the first ground port and the second ground port is established.
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13. The use of a circuit for fill level measuring, the circuit including (a) a switching unit with a first ground port;
- (b) a high-frequency element with a second ground port that is designed as a HF ground port;
(c) a coupling element; and
(d) an insulation between the second ground port and the first ground port, wherein the switching unit is connected between the first ground port and the high-frequency element; and
wherein the second ground port is coupled, by way of the coupling element, to the first ground port, wherein the coupling of the second ground port to the first ground port is a high frequency coupling, and wherein a direct-current flow between the first ground port and the high-frequency element is only possible when the switching unit is switched so that a short circuit between the first ground port and the second ground port is established.
- (b) a high-frequency element with a second ground port that is designed as a HF ground port;
Specification