EP3132495B1 - Vorrichtung zur wellenlängenselektiven abschirmung einer auf einem schiff angeordneten antenne - Google Patents

Vorrichtung zur wellenlängenselektiven abschirmung einer auf einem schiff angeordneten antenne Download PDF

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Publication number
EP3132495B1
EP3132495B1 EP15714828.9A EP15714828A EP3132495B1 EP 3132495 B1 EP3132495 B1 EP 3132495B1 EP 15714828 A EP15714828 A EP 15714828A EP 3132495 B1 EP3132495 B1 EP 3132495B1
Authority
EP
European Patent Office
Prior art keywords
antenna
cage
screening
wavelength
electromagnetic interference
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.)
Active
Application number
EP15714828.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3132495A1 (de
Inventor
Holger ARENDS
Thorsten BÜSCHER
Harm-Friedrich Harms
Dirk Ewers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp AG
ThyssenKrupp Marine Systems GmbH
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Marine Systems GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp AG, ThyssenKrupp Marine Systems GmbH filed Critical ThyssenKrupp AG
Priority to PL15714828T priority Critical patent/PL3132495T3/pl
Publication of EP3132495A1 publication Critical patent/EP3132495A1/de
Application granted granted Critical
Publication of EP3132495B1 publication Critical patent/EP3132495B1/de
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/34—Adaptation for use in or on ships, submarines, buoys or torpedoes
    • 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
    • H01Q1/425—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising a metallic grid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/526—Electromagnetic shields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective

Definitions

  • the present invention relates to a device for wavelength-selective shielding of an antenna arranged on a ship from electromagnetic interference waves.
  • antennas for receiving and transmitting powerful signals in the form of electromagnetic waves.
  • the antennas arranged on an upper deck in particular cause field strengths of around 100 V/m.
  • the field strength loading of the antennas associated with the high field strength then leads to an increased susceptibility to interference during operation if the antenna has a lower EMC resistance than the field strength.
  • commercial mass-produced antennas have an EMC strength of around 10 V/m and are therefore generally below the field strengths that occur, for example, on an upper deck.
  • the prior art provides for the mass-produced antenna, i. H. a components-off-the-shelf (cots) antenna, to be replaced by an expensive antenna with a correspondingly high EMC resistance or to be placed in a location on the ship where field strength is less likely to be applied. Since the space on naval ships used for military purposes is limited, it is often not possible to find an alternative mounting point for the antenna. Replacing the standard antennas is then usually associated with considerable additional costs, especially if several antennas have to be replaced.
  • cots components-off-the-shelf
  • a device for shielding an antenna from electromagnetic radiation which comprises metallic wires arranged in the form of a grid or spiral under a radome.
  • Other devices for shielding an antenna from electromagnetic radiation are out DE 199 63 003 A1 , DE 198 30 791 A1 and DE 23 21 044 A1 famous.
  • the object of the present invention is to provide a device that allows commercial, mostly mass-produced antennas with a given EMC resistance to be arranged in areas of a ship in which the field strength exceeds the EMC resistance of the antenna.
  • the object of the present invention is achieved by a device according to claim 1.
  • the device according to the invention has the advantage that the high-pass filter ensures wave-selective shielding with which a long-wave, i. H. high-frequency electromagnetic interference wave is prevented from being coupled into the shielding cage and consequently the application of the field strength by the electromagnetic interference wave can be suppressed.
  • the shielding cage is also able to prevent the decoupling of electromagnetic interference waves that emanate from the antenna in the form of spurious emissions.
  • the susceptibility to interference of the antenna with the device according to the invention can be reduced, which ultimately means that antennas with an originally lower EMC resistance can also be used in the area with a potentially high rock load.
  • the shielded antenna is preferably one whose EMC strength has a value below 20 V/m and/or is intended for satellite communication (SatCom).
  • the high-pass filter is designed in such a way that the electromagnetic signal waves required to operate the antenna are let through by the shielding cage.
  • This can be an antenna for sending and/or receiving electromagnetic waves.
  • the shielding cage is individually adapted to the antenna and/or to its area of application.
  • the device is designed in such a way that it can be placed on antennas that are already integrated in a ship.
  • a ship that it is not conceivable according to the invention that a
  • a plurality of antennas is at least partially arranged within the screen cage.
  • the electrically conductive rods are arranged in such a way that they form meshes with different mesh sizes.
  • the electrically conductive rods are arranged in such a way that they form meshes with different mesh shapes. It is conceivable that the meshes essentially have the shape of a rectangle, a trapezoid and/or a circle. Furthermore, it is conceivable that the meshes are arched to adapt to the antenna.
  • the electrically conductive rods are arranged in a grid-like manner and thereby define the self-contained meshes of the grid, a mesh size being defined by the rods delimiting the mesh.
  • the antenna is arranged in the center of the shielding cage. This allows the shielding for the antenna to be made particularly effective. It is also not conceivable according to the invention for the antenna to be offset parallel to a central axis or inclined relative to it. The meshes are then preferably adjusted accordingly in order to bring about effective shielding.
  • a mesh size that defines the mesh size varies within a mesh.
  • the mesh size is determined by a distance between two opposite points on the mesh.
  • the size of the mesh determines the shielding attenuation.
  • the shielding cage can be specifically designed in such a way that electromagnetic interference waves with a wavelength greater than a limit wavelength that is specified by the mesh size are shielded.
  • the mesh width also determines the wavelength selectivity in an advantageous manner.
  • the mesh size is adapted to the shape of the antenna. Provision is made for a surface spanned by the shielding cage to run essentially parallel to the outer surface of the antenna. As a result, the device can be designed to fit the antenna as precisely as possible.
  • the shielding cage is arranged on an electrically conductive frame, the frame being designed to accommodate the antenna.
  • the framework fixes the antenna relative to the shielding cage and advantageously ensures the contact-free arrangement between the antenna and shielding cage.
  • the framework has fastening means, via which the device is fixed to the ship. A device that is securely fastened to the ship can advantageously ensure that the antenna remains arranged without contact at a fixed relative distance from the shielding cage, even in rough seas.
  • the EMC strength of the antenna is less than 15 V/m.
  • the mesh sizes are adapted to other electromagnetic interference waves that emanate from other antennas arranged on the ship.
  • the antenna can be used with as little interference as possible.
  • the rods have a non-ferromagnetic metal and/or a rod thickness is adapted to the electromagnetic interference wave.
  • the susceptibility to failure of the antenna during operation can be further reduced by using the right material and the thickness of the rods.
  • the shield cage is not square in shape. Rather, it is provided that the shielding cage is at least partially curved. If the shielding cage surrounded the antenna squarely, the device would take up a correspondingly large amount of space (depending on the longest extent of the antenna within the shielding cage). Correspondingly, the non-square configuration of the screen cage allows the device to be shaped as space-savingly as possible, which can be correspondingly easily integrated into the ship.
  • the shielding cage is designed in such a way that it has an attenuation of more than 10 dB, preferably more than 15 dB and particularly preferably more than 20 dB for the electromagnetic interference wave.
  • the electromagnetic interference waves can be weakened in such a way that the application of field strength that would otherwise occur as a result of the long-wave electromagnetic interference waves can be suppressed in an advantageous manner.
  • the device has an exchangeable shielding cage and/or a further shielding cage which can be placed on the shielding cage for adaptation to a changed interference wavelength.
  • shielding adapted to the environment can be brought about by the respective selection of the shielding cage or the additional shielding cage. It is conceivable that different external interference sources emit electromagnetic interference waves, each with different interference wavelengths. Depending on the position of the ship relative to the external sources of interference, the shielding cage or the further shielding cage can then be selected which is suitable for the most effective possible shielding against electromagnetic interference waves emanating from the external source.
  • the screen cage can be adapted to the location of the antenna on the ship.
  • the antenna is more heavily loaded on one side by electromagnetic interference waves, for example due to its arrangement relative to a powerful transmitter, and accordingly the shielding cage, in particular its mesh shape is designed so that the most effective shielding possible for the antenna can be achieved.
  • Another object of the present invention is a ship with a device as described above. This allows me to create a ship that does not depend on custom-made antennas with reduced susceptibility to failure.
  • the custom-made products for the antennas allow for mass-produced, d. H. components-off-the-shelf (cots) antenna, to be replaced.
  • a ship 10 for which the device for wavelength-selective shielding of an antenna 1 from electromagnetic interference waves 5 is provided.
  • the ship 10 preferably includes an antenna 2 which is designed to receive and/or transmit signals in the form of electromagnetic waves, the electromagnetic signal waves.
  • the antenna 1 on such a ship is exposed to a large number of electromagnetic interference waves 5 which are essentially differ by their wavelength or frequency.
  • the individual electromagnetic interference waves 5 can be generated by an external source, for example a satellite 3 , another ship or a transmission center on land, and/or an internal source, for example another antenna 2 on the ship 10 .
  • Electromagnetic interference waves that are not intended for the operation of the antenna 1 may have a negative effect on the functionality of the antenna 1.
  • the object of the present invention is to provide a device that makes the interference-prone, mass-produced antennas 1 operational for transmitting and/or receiving electromagnetic signal waves 5 independently of the field strength at the place of use.
  • the device comprises a Faraday cage designed as a shield cage 4 .
  • the shielding cage 4 at least partially encloses the antenna 1 which would otherwise be disturbed by the electromagnetic interference waves 5 .
  • the shielding cage 4 is designed in such a way that it forms a high-pass filter.
  • the shielding cage 4 blocks interfering electromagnetic waves 5 with a large wavelength, i. H. low frequency, and allows electromagnetic signal waves with a small wavelength, i. H. happen at high frequency.
  • This advantageously prevents the high field strengths of the long-wave interference signals from being coupled into the cage or that—in the case of a transmitting antenna in the shielding cage 4—no long-wave spurious emissions emanating from the antenna 1 are decoupled from the shielding cage 4 .
  • the short-wave useful signals or electromagnetic signal waves required for the operation of the antenna 1 can pass through the shielding cage 1 largely without loss.
  • FIG 2 a device for wavelength-selective shielding of the antenna 1 from electromagnetic interference waves 5 according to a first exemplary embodiment of the present invention is shown.
  • the shielding cage 4 has electrically conductive rods 8 , preferably made of a non-ferromagnetic metal, with the rods 8 being arranged in a grid-like manner and thereby forming meshes 7 .
  • at least two meshes 7 differ in their mesh size, with the respective mesh size being defined by the (empty) area is fixed, which is arranged between the bars 8 delimiting the individual meshes 7 .
  • the mesh size defines an aperture of the mesh 7, which also determines which electromagnetic interference waves 5 are damped by the Faraday cage with regard to their wavelengths and is correspondingly adapted to the wavelength of one or more long-wave electromagnetic interference waves 5.
  • the device also includes a preferably electrically conductive frame 6, which is designed to accommodate the antenna 1, is attached directly or indirectly to the shielding cage 4 and preferably has fastening means with which the device is mounted on the ship 10, for example on its outer skin can.
  • the antenna 1 protruding through the frame 6 into the shielding cage 4 is thus at least partially surrounded by the shielding cage 4 and is arranged centrally in it. It is provided in particular that the shape of the shielding cage 4 is adapted to the shape of the antenna 1 .
  • a surface spanned by the shielding cage 4 runs essentially parallel to an outer surface of the antenna 1.
  • the shielding cage 4 has a curvature in its shape.
  • the meshes 7 are preferably configured in a trapezoidal manner in a curved region or the rods 8 forming the meshes are arranged in such a way that they form a trapezoidal frame for the mesh 7 .
  • the mesh size 9 is defined as the distance between two opposite points on the self-contained mesh 7. Furthermore, it is provided that the largest mesh size is smaller than 1/10 of the wavelength of the electromagnetic interference wavelength 5 and/or the smallest mesh size is larger than 1/10 of the wavelength of the electromagnetic signal wave.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)
EP15714828.9A 2014-04-16 2015-04-09 Vorrichtung zur wellenlängenselektiven abschirmung einer auf einem schiff angeordneten antenne Active EP3132495B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15714828T PL3132495T3 (pl) 2014-04-16 2015-04-09 Urządzenie do selektywnego pod względem długości fali ekranowania usytuowanej na statku anteny

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014105455.5A DE102014105455A1 (de) 2014-04-16 2014-04-16 Vorrichtung zur wellenlängenselektiven Abschirmung einer auf einem Schiff angeordneten Antenne
PCT/EP2015/057701 WO2015158597A1 (de) 2014-04-16 2015-04-09 Vorrichtung zur wellenlängenselektiven abschirmung einer auf einem schiff angeordneten antenne

Publications (2)

Publication Number Publication Date
EP3132495A1 EP3132495A1 (de) 2017-02-22
EP3132495B1 true EP3132495B1 (de) 2022-02-23

Family

ID=52814996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15714828.9A Active EP3132495B1 (de) 2014-04-16 2015-04-09 Vorrichtung zur wellenlängenselektiven abschirmung einer auf einem schiff angeordneten antenne

Country Status (5)

Country Link
EP (1) EP3132495B1 (pl)
DE (1) DE102014105455A1 (pl)
ES (1) ES2908201T3 (pl)
PL (1) PL3132495T3 (pl)
WO (1) WO2015158597A1 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112019023421A2 (pt) 2017-05-09 2020-06-16 Innovere Medical Inc. Sistema de geração de imagem ressonante magnética e de comunicação, e, sistema de comunicação sem fio.
CN107665516A (zh) * 2017-09-30 2018-02-06 四川民工加网络科技有限公司 一种工地使用定时定位考勤装置
CN114421179B (zh) * 2021-12-03 2026-04-28 贵州电网有限责任公司 用于安装5g天线的铁塔吸波网结构及几何尺寸确定方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201406A (ja) * 1982-05-20 1983-11-24 Mitsubishi Heavy Ind Ltd レ−ド−ム
DE19830791C2 (de) * 1998-02-27 2002-01-03 Mitsubishi Electric Corp Mit elektromagnetischen Wellen arbeitendes Radargerät

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039100A (en) * 1958-12-03 1962-06-12 Trg Inc Thin-wall radome utilizing irregularly spaced and curved conductive reinforcing ribs obviating side-lobe formation
US3154887A (en) * 1959-12-04 1964-11-03 Goodyear Aerospace Corp Random pattern radome structure
FR2181577B1 (pl) * 1972-04-28 1974-07-26 Bony Gilbert
FR2881884A1 (fr) * 1987-01-22 2006-08-11 Gerard Bony "radome adapte pour la protection d'une antenne hyperfrequence"
DE19963003A1 (de) * 1999-12-24 2001-06-28 Bosch Gmbh Robert Kraftfahrzeug-Radarsystem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201406A (ja) * 1982-05-20 1983-11-24 Mitsubishi Heavy Ind Ltd レ−ド−ム
DE19830791C2 (de) * 1998-02-27 2002-01-03 Mitsubishi Electric Corp Mit elektromagnetischen Wellen arbeitendes Radargerät

Also Published As

Publication number Publication date
EP3132495A1 (de) 2017-02-22
DE102014105455A1 (de) 2015-10-22
ES2908201T3 (es) 2022-04-28
PL3132495T3 (pl) 2022-06-20
WO2015158597A1 (de) 2015-10-22

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