EP4214800A1 - Antennenkuppel zum schutz gegenüber witterungseinflüssen - Google Patents
Antennenkuppel zum schutz gegenüber witterungseinflüssenInfo
- Publication number
- EP4214800A1 EP4214800A1 EP21778369.5A EP21778369A EP4214800A1 EP 4214800 A1 EP4214800 A1 EP 4214800A1 EP 21778369 A EP21778369 A EP 21778369A EP 4214800 A1 EP4214800 A1 EP 4214800A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dome
- antenna
- shaped element
- radome
- semi
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
Definitions
- the present invention relates to an antenna dome for protecting antennas from the weather, which has a base on which a dome-shaped element is placed.
- HF high-frequency
- antenna dome also referred to as a radome in the field of radar technology.
- Radomes are mainly found on permanently installed large radar systems, but can also be used to protect other antennas.
- the radomes used hitherto typically have a base in the form of a cylinder or cylinder jacket, on which an element in the form of a segment of a sphere is placed.
- the circular shape guarantees an even attenuation of the antenna in all focusing directions.
- the object of the present invention is to provide an antenna dome for protecting antennas from the effects of the weather, which has only minor mechanical deformations under high snow loads even without a local increase in the wall thickness.
- the proposed antenna dome preferably a stationary radar or large radar system, has in a known manner a base on which a dome-shaped element is placed.
- the base is preferably designed in the shape of a cylinder or cylinder jacket, but it can also have a different shape.
- the proposed antenna dome is characterized in that the dome-shaped element is at least approximately the shape of an ellipsoid of revolution with two identical shorter ones and one longer one Has semi-axis, which is cut off along a cutting plane perpendicular to the longer semi-axis. In an ellipsoid of revolution, two semi-axes have the same length. The third semi-axis runs perpendicularly to the two identical semi-axes and can, in principle, have any length.
- this third semi-axis extends in the z-direction, i.e. perpendicular to the earth's surface or the ground on which the pedestal stands and is larger than the two identical semi-axes.
- the section plane preferably corresponds to the plane of the two identical semi-axes, so that the dome-shaped element has at least approximately the shape of half an ellipsoid of revolution. In this way, in the case of a base in the form of a cylinder or cylinder jacket, the dome-shaped element merges vertically into the base and thus optimally dissipates weight forces into the base.
- the elliptical or The ellipsoidal shape of the dome-shaped element of the proposed, preferably stationary antenna dome transfers the load from snow to the sides of the antenna dome better than with a circular or spherical configuration. This means that local thickening of the antenna dome is no longer necessary and the snow slides off the antenna dome more quickly. The shorter dwell time of the snow also significantly reduces the problem of insertion loss caused by the snow.
- the cross-sectional function in the z-direction of the antenna dome as a function of the radius is chosen in the proposed antenna dome such that the resulting ellipsoid im Compared to a hemispherical shape, a higher tangential component of the weight force acting in the z-direction is introduced into the wall of the antenna dome.
- the ratio between the two identical semi-axes and the longer (third) semi-axle is chosen depending on the requirements of the antenna dome on the acting weight.
- the diameter of the dome-shaped element is preferably at least 2.5 m, particularly preferably at least 5 m or at least 10 m. In this case, the diameter is to be understood as meaning the greatest extent perpendicular to the z-direction.
- the proposed antenna dome has a lower insertion loss due to the smaller wall thickness (no locally thicker areas) at the same maximum load and leads to a higher absorption of the forces in the z-direction while at the same time reducing the amount of snow deposited on the antenna dome. Due to the greater steepness of the dome, less damage from hailstorms and a lower level of pollution due to the higher flow speeds of the rain are also to be expected.
- the dome-shaped element preferably has a constant wall thickness.
- fiber-reinforced plastics can be used as the material, which have a high permeability for the electromagnetic waves to be emitted or received by the antenna.
- the antenna dome can be used very advantageously in stationary radar systems, especially in large radar systems. However , it is suitable for any form of electromagnetically transparent weather protection over three - dimensional radiating antennas where homogeneity of the dome material is required in all focusing directions .
- the antenna dome is mounted and mounted in this way. established that the longer semi-axis of the rotation ellipsoid is approximately parallel to the occurring weight forces.
- Fig. 1 shows a schematic representation of a side view of an antenna dome according to the prior art
- Fig. 2 shows a side view and a cross-sectional representation of an antenna dome according to an exemplary embodiment of the present invention in a schematic representation.
- the antenna dome consists of a frequently cylindrical base 1 and a hemispherical element 2 placed thereon, as shown schematically in a side view in Figure 1 is shown.
- the radome is primarily used to protect an HF antenna from the weather.
- wet snow in particular represents a problem that remains on the dome-shaped element 2, since the radome can easily be mechanically deformed by the weight of this snow. For this reason, it is often necessary to locally provide the dome-shaped element of the radome with an increased wall thickness, which, however, then leads to higher HF losses.
- the antenna dome according to the invention has a dome-shaped element 3 which is embodied in the shape of an ellipsoid.
- FIG. 2 shows an exemplary embodiment of the proposed antenna dome in a schematic representation in a side view and in cross section along section line AA′.
- This has a cylinder or cylinder jacket-shaped base 1, on which the ellipsoidf-shaped element 3 is placed.
- the ellipsoidal shape is selected in such a way that the semi-axis c of the ellipsoid running parallel to the z-direction is longer than the two identical semi-axes a, b of this ellipsoid of revolution.
- the ellipsoid-shaped element 3 has the shape of half an ellipsoid, which merges perpendicularly into the base 1 in the shape of a cylinder or cylinder jacket.
- a weight force F G is also indicated in FIG. 2 by way of example, the tangential component of which is introduced into the wall of the ellipsoidal element 3 .
- This tangential component is greater than the tangential introduced into the wall of the dome of the embodiment of FIG. 1 with the same weight force Proportion of .
- the force acting perpendicularly on the wall of the dome-shaped portion is also smaller than in the embodiment according to FIG.
Landscapes
- Details Of Aerials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020124420.7A DE102020124420A1 (de) | 2020-09-18 | 2020-09-18 | Antennenkuppel zum Schutz gegenüber Witterungseinflüssen |
| PCT/EP2021/075201 WO2022058299A1 (de) | 2020-09-18 | 2021-09-14 | Antennenkuppel zum schutz gegenüber witterungseinflüssen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4214800A1 true EP4214800A1 (de) | 2023-07-26 |
Family
ID=77951664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21778369.5A Pending EP4214800A1 (de) | 2020-09-18 | 2021-09-14 | Antennenkuppel zum schutz gegenüber witterungseinflüssen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4214800A1 (de) |
| DE (1) | DE102020124420A1 (de) |
| WO (1) | WO2022058299A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024261737A1 (en) | 2023-06-23 | 2024-12-26 | Alma Therapeutics Ltd | Structure of intestinal tissue penetrating members |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3128466A (en) * | 1953-09-04 | 1964-04-07 | Goodyear Aerospace Corp | Radome boresight error compensator |
| US6011524A (en) | 1994-05-24 | 2000-01-04 | Trimble Navigation Limited | Integrated antenna system |
| DE10128984B4 (de) * | 2001-06-11 | 2007-04-26 | Wötzel, Frank E. | Anordnung zum Schutz von Antennen und Antennenelementen für das elektromagnetische Wellenspektrum gegen Umwelteinflüsse, insbesondere klimatische Einflüsse |
| US7151504B1 (en) * | 2004-04-08 | 2006-12-19 | Lockheed Martin Corporation | Multi-layer radome |
| US9543657B2 (en) | 2014-04-15 | 2017-01-10 | R.A. Miller Industries, Inc. | UHF satellite communications antenna |
-
2020
- 2020-09-18 DE DE102020124420.7A patent/DE102020124420A1/de active Pending
-
2021
- 2021-09-14 WO PCT/EP2021/075201 patent/WO2022058299A1/de not_active Ceased
- 2021-09-14 EP EP21778369.5A patent/EP4214800A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020124420A1 (de) | 2022-03-24 |
| WO2022058299A1 (de) | 2022-03-24 |
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Legal Events
| Date | Code | Title | Description |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
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| AK | Designated contracting states |
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| DAX | Request for extension of the european patent (deleted) | ||
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