Granted Patent B2

US 12,555,898 · App. 18/431,147 · Granted Feb 17, 2026

Inventors: Christian Weinzierle (Wolfach, DE); Christoph Mueller (Oppenau, DE); Steffen Waelde (Niedereschach, DE)

Assignee: VEGA Grieshaber KG

H01Q1/40H01Q1/225H01Q1/2283H01Q1/42H01Q9/0407H01Q13/02

Abstract

Claims (37)

1 . A radio frequency unit for use in a potentially explosive atmosphere, comprising:

a carrier element, on which a radio frequency element is arranged, the radio frequency element being configured to transmit and/or receive a radio frequency signal;

a housing, which delimits the radio frequency element at least in sections; and

an excitation element arranged on the radio frequency element and configured to transmit the radio frequency signal,

wherein an inside of the housing is potted with a potting compound, and

wherein the housing comprises at least one opening configured for insertion of the potting compound.

2 . The radio frequency unit according to claim 1 , wherein the excitation element comprises an electrically non-conductive material.

3 . The radio frequency unit according to claim 1 , wherein the potting compound has a lower relative permittivity than the excitation element.

4 . The radio frequency unit according to claim 1 , wherein the excitation element is arranged on an antenna element.

5 . The radio frequency unit according to claim 1 , wherein the excitation element is arranged on a patch element.

6 . The radio frequency unit according to claim 1 , wherein the housing comprises a waveguide.

7 . The radio frequency unit according to claim 6 , wherein an antenna is arranged at the waveguide.

8 . The radio frequency unit according to claim 1 , wherein the housing comprises a dielectric waveguide.

9 . The radio frequency unit according to claim 1 , wherein the carrier element comprises a printed circuit board and/or a semiconductor element.

10 . The radio frequency unit according to claim 1 , wherein the excitation element has a cylindrical and/or a conical geometry.

11 . The radio frequency unit according to claim 1 , wherein the radio frequency element comprises a coupling element on which the excitation element is arranged.

12 . A fill level measuring device comprising a radio frequency unit according to claim 1 .

13 . A method of manufacturing a radio frequency unit according to claim 1 , the method comprising:

providing a carrier element;

providing a radio frequency element;

arranging the radio frequency element on the carrier element and connecting the radio frequency element to the carrier element;

arranging an excitation element on the radio frequency element;

arranging a housing on the radio frequency element; and

potting an inside of the housing with a potting compound.

14 . A radio frequency unit for use in a potentially explosive atmosphere, comprising:

a carrier element, on which a radio frequency element is arranged, the radio frequency element being configured to transmit and/or receive a radio frequency signal;

a housing, which delimits the radio frequency element at least in sections; and

an excitation element arranged on the radio frequency element and configured to transmit the radio frequency signal,

wherein an inside of the housing is potted with a potting compound, and

wherein the housing comprises at least one vent opening.

15 . A radio frequency unit for use in a potentially explosive atmosphere, comprising:

a carrier element, on which a radio frequency element is arranged, the radio frequency element being configured to transmit and/or receive a radio frequency signal;

a housing, which delimits the radio frequency element at least in sections; and

an excitation element arranged on the radio frequency element and configured to transmit the radio frequency signal,

wherein an inside of the housing is potted with a potting compound,

wherein the housing comprises a waveguide, and

wherein the housing is connected to the waveguide by means of at least one web.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (10)