WAVEGUIDE COUPLING, HIGH-FREQUENCY MODULE, FILL-LEVEL RADAR AND USE

• US 20140009323A1
• Filed: 07/03/2013
• Published: 01/09/2014
• Est. Priority Date: 07/04/2012
• Status: Active Grant

• Current Assignee: VEGA Grieshaber KG (Grieshaber Verwaltungsgesellschaft mbH)
• Original Assignee: VEGA Grieshaber KG (Grieshaber Verwaltungsgesellschaft mbH)
• Inventors: WEINZIERLE, Christian, Schultheiss, Daniel
• Granted Patent: US 9,212,942 B2
• Time in Patent Office: Days
• US Class Current: 342/124
• CPC Class Codes: G01F 23/284 Electromagnetic waves
• CPC Class Codes: H01P 5/024 between hollow waveguides
• CPC Class Codes: H01P 5/08 for linking dissimilar lines or devices H01P1/16, H01P5/04 take precedence; linking lines of the same kind but with different dimensions H01P5/02
• CPC Class Codes: H01P 5/107 Hollow-waveguide/strip-line transitions
• CPC Class Codes: H01Q 13/02 Waveguide horns

Abstract

A waveguide coupling includes a planar radiator element which couples the transmission signal into a waveguide of the waveguide coupling. The waveguide widens in the direction of the planar radiator element, in such a way that the radiator element can be of a comparatively large diameter without the inner walling of the waveguide detracting significantly from the signal quality.

Claims

1. A waveguide coupling for coupling an electromagnetic signal from a high-frequency module into a waveguide, comprising:

a planar radiator element configured to emit the signal; and

a waveguide configured to transmit the emitted signal from a volume defined by a start region of the waveguide along a volume defined by a main region of the waveguide,

wherein the planar radiator element is one of (a) arranged in the start region and (b) arranged immediately upstream from the start region and

wherein an internal diameter of the start region in a transition region to the main region is the same as an internal diameter of the main region, and becomes larger towards the planar radiator element.

2. The waveguide coupling according to claim 1, wherein the main region is arranged at a distance from the planar radiator element in the radiation direction of the signal.

3. The waveguide coupling according to claim 1, wherein an inside of the start region follows a conical progression.

4. The waveguide coupling according to claim 1, wherein an inside of the start region follows a hyperbolic progression.

5. The waveguide coupling according to claim 1, wherein an inside of the start region follows a stepped progression.

6. The waveguide coupling according to claim 1, wherein a diameter of the planar radiator element is greater than an internal diameter of the main region.

7. The waveguide coupling according to claim 1, further comprising:

a dielectric sealing element sealing the waveguide in a gas-tight manner.

8. The waveguide coupling according to claim 7, wherein the waveguide includes an internal, peripheral web on which the dielectric sealing element is laid.

9. The waveguide coupling according to claim 7, wherein the dielectric sealing element is arranged in the start region.

10. The waveguide coupling according to claim 1, wherein a diameter of the planar radiator element is less than half of a maximum internal diameter of the start region.

11. The waveguide coupling according to claim 1, wherein a diameter of the planar radiator element is less than third of a maximum internal diameter of the start region.

12. The waveguide coupling according to claim 1, further comprising

a carrier, the planar radiator element being arranged on the carrier;

and

a housing connected in a gas-tight manner to the carrier.

13. The waveguide coupling according to claim 12, wherein the waveguide includes an external, peripheral web on which the carrier is laid.

14. A high-frequency module for generating a measurement signal for a fill-level measurement device, comprising

a waveguide coupling according to claim 1.

15. A fill-level radar, comprising:

a high-frequency module according to claim 14.

16. Use of a waveguide coupling according to claim 1 in a field device.