Granted Patent B2

US 12,676,418 · App. 18/591,113 · Granted Jul 7, 2026

Inventors: Christian Weinzierle (Wolfach, DE); Steffen Wälde (Niedereschach, DE); Tobias Bader (Haslach, DE)

Assignee: VEGA Grieshaber KG

H01Q13/0283G01S7/03

Abstract

Claims (18)

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, comprising

a waveguide for transmitting the electromagnetic waves at an operating frequency of at least 120 GHz between the radio frequency unit and the antenna, wherein

a length of the waveguide in the longitudinal direction is greater than 30 times a smallest extension of the waveguide in cross-section, and

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 claim 1 , 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 coated with 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 an inner wall of the waveguide has a mean roughness value of less than 0.5 μm.

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

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

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

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (20)