Waveguide consisting of two-half shells

Patent metadata

Field	Value
Publication number	US-2024305002-A1
Application number	US-202418591113-A
Country	US
Kind code	A1
Filing date	Feb 29, 2024
Priority date	Mar 7, 2023
Publication date	Sep 12, 2024
Grant date	—

Abstract

A radar measuring device having a radio frequency unit for generating and/or receiving electromagnetic waves using an antenna for directional radiation of the electromagnetic waves, in which a waveguide for transmitting the electromagnetic waves is arranged between the radio frequency unit and the antenna is formed from two half-shells extending in the longitudinal direction of said waveguide.

First claim

1 . A radar measuring device having a radio frequency unit for generating and/or receiving electromagnetic waves using an antenna for directional radiation of the electromagnetic waves, wherein a waveguide for transmitting the electromagnetic waves is arranged between the radio frequency unit and the antenna,
wherein the waveguide consists of two half-shells extending in the longitudinal direction of the waveguide.

2 . The radar measuring device as claimed in claim 1 ,
wherein the waveguide has a round cross-section, wherein a separation plane defined by the half-shells bisects the waveguide in a longitudinal direction.

3 . The radar measuring device as claimed in claim 1 ,
wherein the waveguide has a rectangular cross-section, with a separation plane defined by the half-shells being parallel to the shorter sides of the rectangle and bisecting the latter.

4 . The radar measuring device as claimed in claim 3 ,
wherein a length of a longer side of the rectangle is less than 2 mm.

5 . The radar measuring device as claimed in any of the preceding claims ,
wherein the half-shells comprise self-centering alignment elements.

6 . The radar measuring device as claimed in claim 5 ,
wherein the alignment elements are connecting members for interconnecting the half-shells.

7 . The radar measuring device as claimed in claim 5 ,
wherein the alignment elements are integrally formed with the half-shells.

8 . The radar measuring device as claimed in claim 5 ,
wherein the alignment elements are realized as openings and as pins arranged so as to correspond to said openings.

9 . The radar measuring device as claimed in claim 1 ,
wherein the waveguide is made of metal.

10 . The radar measuring device as claimed in claim 1 ,
wherein the waveguide is formed of a plastic material as a support material and a metallization.

11 . The radar measuring device as claimed in claim 1 ,
wherein the waveguide has a length of at least 4 cm.

12 . The radar measuring device as claimed in claim 1 ,
wherein the waveguide has a ratio of length to smallest extension in the cross-section of the waveguide of greater than 30.

13 . The radar measuring device as claimed in claim 1 ,
wherein an inner wall of the waveguide has a mean roughness value of less than 0.5 μm.

14 . The radar measuring device as claimed in claim 1 ,
wherein the radar measuring device has an operating frequency of at least 120 GHz.

15 . The radar measuring device as claimed in claim 1 ,
wherein the waveguide provides galvanic isolation via an interruption of an electrically conductive layer.

16 . The radar measuring device as claimed in claim 1 ,
wherein the waveguide has a fastening device for an engaging piece and/or a thread.

17 . A method for manufacturing a waveguide for a radar fill level measuring device having a radio frequency unit for generating and/or receiving electromagnetic waves using an antenna for directional radiation of the electromagnetic waves, and a waveguide for transmitting the electromagnetic waves arranged between the radio frequency unit and the antenna,
comprising making the waveguide of two half-shells.

18 . The method as claimed in claim 17 ,
wherein the half-shells are made of a metal.

19 . The method as claimed in claim 17 ,
wherein the half-shells are made of plastic material and are then metallised.

Assignees

• Grieshaber Vega Kg

Inventors

• Weinzierle Christian
• Wälde Steffen
• Bader Tobias

Classifications

• G01S7/35

  Details of non-pulse systems · CPC title

• G01S7/027

  Constructional details of housings, e.g. form, type, material or ruggedness · CPC title

• G01S7/282

  Transmitters · CPC title

• G01F23/284 Primary

  Electromagnetic waves · CPC title

• H01Q1/22 Primary

  by structural association with other equipment or articles · CPC title