# US 11,114,754 B2 · Radar antenna device and method for shielding a radar antenna device

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- Number: US 11,114,754 B2
- Document ID: US11114754B2
- Status: Granted
- Kind: B2
- Application number: 16/090,864
- Filed: 2016-04-07
- Published: 2020-10-15
- Granted: 2021-09-07
- Earliest claimed: 2016-04-07
- Assignees: TMT Tapping-Measuring-Technology GmbH
- Applicants: Tmt Tapping-Measuring-Technology GmbH
- Inventors: Jean-Francois Stumper; Kevin Viktor
- Web page: https://patentgrep.com/patent/US11114754B2

## CPC

- H01Q 1/42: Housings not intimately mechanically associated with radiating elements, e.g. radome
- G01F 22/02: involving measurement of pressure
- G01S 13/88: Radar or analogous systems specially adapted for specific applications (electromagnetic prospecting or detecting of objects, e.g. near-field detection, G01V3/00)
- H01Q 1/002: {Protection against seismic waves, thermal radiation or other disturbances, e.g. nuclear explosion; Arrangements for improving the power handling capability of an antenna}
- H01Q 1/02: Arrangements for de-icing; Arrangements for drying-out {; Arrangements for cooling; Arrangements for preventing corrosion}
- H01Q 1/22: by structural association with other equipment or articles
- H01Q 1/225: {used in level-measurement devices, e.g. for level gauge measurement}
- G01F 22/00: Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
- G01F 23/284: Electromagnetic waves
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)
- G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES

## Abstract

A radar antenna device (16) having an antenna arrangement (19) that is accommodated in a housing (17) and is provided with a protective plate (20) for being separated with respect to a furnace atmosphere formed within a furnace chamber, said protective plate (20) being disposed on the housing, a radar-transparent limp material layer (21) comprising pores being disposed as a shield at a distance upstream of the protective plate (20) in such a manner that a space which is separated by the material layer (21) with respect to the furnace chamber is formed, a fluid line opening into said space for applying a fluid flow to the material layer (21).

## Claims

### Claim 1

A radar antenna device (16) having an antenna arrangement (19) that is accommodated in a housing (17) and is provided with a protective plate (20) for being separated with respect to a furnace atmosphere formed within a furnace chamber, said protective plate (20) being disposed on the housing, characterized in that a radar-transparent limp material layer (21) comprising pores (30) is disposed as a shield at a distance upstream of the protective plate (20) in such a manner that a space (23) which is separated by the material layer (21) is formed with respect to the furnace chamber, a fluid line (24) opening into said space (23) for applying a fluid flow (26) to the material layer (21), wherein the radar-transparent material layer (21) has a fabric structure (33).

### Claim 2 (depends on 1)

The radar antenna device according to claim 1, characterized in that the material layer (21) is formed in an elastic manner.

### Claim 3 (depends on 1)

The radar antenna device according to claim 1, characterized in that the fabric structure (33) has at least partially elastic longitudinal threads (27) or transverse threads (28).

### Claim 4 (depends on 3)

The radar antenna device according to claim 3, characterized in that the longitudinal threads (27) or transverse threads (28) have an elastic sheath (29).

### Claim 5 (depends on 3)

The radar antenna device according to claim 3, characterized in that the longitudinal threads (27) or transverse threads (28) are impregnated with an elastic material.

### Claim 6 (depends on 1)

The radar antenna device according to claim 1, characterized in that the fluid line (24) is at least partially formed within a housing wall (22) of the housing (17).

### Claim 7 (depends on 1)

The radar antenna device according to claim 1, characterized in that the fluid line (24) is provided with a heating device at least in sections.

### Claim 8

A method for shielding a radar antenna device (16) which emits radar radiation and comprises an antenna arrangement (19) disposed in a housing (17), said antenna arrangement (19) being provided with a protective plate (20) for being separated with respect to a furnace atmosphere formed within a furnace chamber and said protective plate being disposed on the housing, characterized in that a radar-transparent limp material layer (21) comprising pores (30) is disposed upstream of the protective plate (20) for shielding from the furnace atmosphere, in such a manner that a space (23) is formed between the protective plate (20) and the material layer (21), said space (23) being separated from the furnace chamber, and that a fluid flow (26) which interfuses the pores (30) of the material layer is applied to the material layer (21) via a fluid line (24) which conducts to the space (23) for generating vibrations in the material layer (21), wherein the radar-transparent limp material layer (21) has a fabric structure (33).

### Claim 9 (depends on 8)

The method according to claim 8, characterized in that the fluid flow (26) is heated.

### Claim 10 (depends on 8)

The method according to claim 8, characterized in that the fluid flow (26) is formed as a nitrogen flow.

### Claim 11 (depends on 8)

The method according to claim 8, characterized in that the flow for forming a time-dependent application profile is applied using an alternating pressure.

### Claim 12 (depends on 8)

The method according to claim 8, characterized in that the material layer (21) is coordinated with the application profile within the design of the material layer (21) and/or the elasticity of the material layer (21) in order to generate vibrations of the material layer.