DE8915912U1 - Protective element for metallic and/or metallized components - Google Patents
Protective element for metallic and/or metallized componentsInfo
- Publication number
- DE8915912U1 DE8915912U1 DE8915912U DE8915912U DE8915912U1 DE 8915912 U1 DE8915912 U1 DE 8915912U1 DE 8915912 U DE8915912 U DE 8915912U DE 8915912 U DE8915912 U DE 8915912U DE 8915912 U1 DE8915912 U1 DE 8915912U1
- Authority
- DE
- Germany
- Prior art keywords
- protective element
- element according
- lossy
- metallic
- resonance bodies
- 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.)
- Expired - Lifetime
Links
- 230000001681 protective effect Effects 0.000 title claims description 22
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000012510 hollow fiber Substances 0.000 claims description 2
- 230000010287 polarization Effects 0.000 claims description 2
- 238000002310 reflectometry Methods 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims 1
- 230000005670 electromagnetic radiation Effects 0.000 claims 1
- 239000006096 absorbing agent Substances 0.000 description 12
- 239000010410 layer Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/002—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using short elongated elements as dissipative material, e.g. metallic threads or flake-like particles
Landscapes
- Aerials With Secondary Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
Description
Schutzelement für metallische und/oder metallisierte BauteileProtective element for metallic and/or metallized components
Die !Neuerung bezieht sich auf ein Schutzelement für metallische und/oder metallisierte Bauteile zur Verringerung der Radarreflektivität und/oder Radartransmission.The innovation relates to a protective element for metallic and/or metallized components to reduce radar reflectivity and/or radar transmission.
Zum Schutz gegen Radarerfassung sind eine Vielzahl von Maßnahmen insbesondere zur Reflexionsunterdrückung der Radarwellen bekannt. Solche als Radarabsorber bezeichneten Schutzelemente werden üblicherweise in Breitbandabsorber und Interferenzabsorber unterteilt. Breitbandabsorber bieten einfallenden Radarwellen an ihren Oberflächen einen weichen übergang von der Luft in die Absorberstruktur, so daß bei minimaler Reflexion der größte Teil der Radarenergie in die Absorberstruktur eindringt und dort nach und nach ohne störende interne Reflexion in Wärme umgesetzt wird.A variety of measures are known to protect against radar detection, particularly for suppressing reflections of radar waves. Such protective elements, known as radar absorbers, are usually divided into broadband absorbers and interference absorbers. Broadband absorbers offer incident radar waves a smooth transition from the air into the absorber structure on their surfaces, so that with minimal reflection, most of the radar energy penetrates the absorber structure and is gradually converted into heat without disruptive internal reflection.
Interferenzabsorber basieren hingegen auf dem Prinzip RadarleistungsanteiIe an der Absorberoberfläche und gegebenenfalls dahinter liegender Sprungstellen derart in Amplitude und Phase aufeinander abzustimmen, damit eine optimale Auslcschung der Radarenergie durch destruktive überlagerung der einzeln reflektierten Anteile erfolgt. Interferenzabsorber sind bei einlagigem Aufbau schmalbandig aber durch einen Mehrschichtaufbau kann . die Absorptionsbandbreite in gewissen Grenzen vergrößert werden.Interference absorbers, on the other hand, are based on the principle of matching the amplitude and phase of radar power components on the absorber surface and, if applicable, the discontinuities behind it, so that the radar energy is optimally eliminated by destructive superposition of the individually reflected components. Interference absorbers are narrow-band when constructed in a single layer, but the absorption bandwidth can be increased within certain limits by using a multi-layer construction.
Der Neuerung liegt daher die Aufgabe zugrunde die Absorptionsbandbreite eines Radarabsorbers zu vergrößern und gleichzeitig seine Dicke zu verringern. Diese Aufgabe ist gemäß der Neuerung dadurch gelöst, daß das Schutzelement leitende Resonanzkörper enthält, die ganz oder teilweise in eine verlustbehaftete Matrix eingebettet sind.The innovation is therefore based on the task of increasing the absorption bandwidth of a radar absorber and simultaneously reducing its thickness. According to the innovation, this task is solved by the protective element containing conductive resonance bodies that are fully or partially embedded in a lossy matrix.
Die neuerungsgemäße Maßnahme hat den Vorteil daß durch Verteilung, Größe, Form und Orientierung der Resonanzkörper der Frequenz- und der Polarisationsbereich des Schutzelements eingestellt, d.h. die Absorptionsbandbreite und der Absorptionsgrad bestimmt werden kann. Durch das Einbringen der metallisch leitenden Resonanzkörper in eine Umgebung, die ganz oder teilweise aus verlustbehaftetem bzw. absorbierendem Medium besteht, wird die einfallende Radarenergie vernichtet bzw. in Wärme umgesetzt. Die Resonanzkörper können aus metallischen oder metallisierten Fasern bzw. Hohlfasern bestehen, die bei Resonanz die einfallende Radarenergie optimal aufnehmen und an die sie umgebende Absorbermatrix zur Absorption abgeben.The innovative measure has the advantage that the frequency and polarization range of the protective element can be set through the distribution, size, shape and orientation of the resonance bodies, i.e. the absorption bandwidth and the absorption level can be determined. By introducing the metallically conductive resonance bodies into an environment that consists entirely or partially of a lossy or absorbing medium, the incident radar energy is destroyed or converted into heat. The resonance bodies can consist of metallic or metallized fibers or hollow fibers, which optimally absorb the incident radar energy when resonating and release it to the surrounding absorber matrix for absorption.
Die Resonanzkörper können dazu dreidimensional und gleichmäßig
oder in geeingneter Schicht bzw. Gradientenanordnung in der Absorbermatrix verteilt werden und, wie bereits
erwähnt, zur Einstellung des Absorptionsgrades der Absorptionsbandbreite
in Verteilung, Form, Größe und Orientierung, z.B. senkrecht zur Beschichtungsebene ausgerichtet werden.
Eine Deckschicht am Schutzelement sorgt gegebenenfalls dafür,
daß die einfallende Radarstrahlung bei minimaler Reflexion an dieser Schicht in das Schutzelement eindringen kann. Das
Schutzelement kann bei erheblich verbreiterter Absorptionsbandbreite in erheblich verringerter Dicke hergestellt werden.
The resonance bodies can be distributed three-dimensionally and evenly or in a suitable layer or gradient arrangement in the absorber matrix and, as already
mentioned, to adjust the absorption level of the absorption bandwidth in distribution, shape, size and orientation, e.g. aligned perpendicular to the coating plane. A covering layer on the protective element ensures, if necessary,
that the incident radar radiation can penetrate into the protective element with minimal reflection from this layer. The protective element can be manufactured in a significantly reduced thickness with a significantly broadened absorption bandwidth.
Claims (8)
gekennzeichnet, daß das Schutzelement eine Deckschicht
aufweist, welche der einfallenden elektromagnetischen
Strahlung das Eindringen in das Schutzelement bei minimaler Reflexion an der Deckschicht erlaubt.6. Protective element according to one of claims 1 to 5, characterized
characterized in that the protective element has a covering layer
which of the incident electromagnetic
Radiation penetrates the protective element with minimal reflection from the cover layer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893940303 DE3940303A1 (en) | 1989-12-06 | 1989-12-06 | PROTECTIVE ELEMENT FOR METAL AND / OR METALIZED COMPONENTS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE8915912U1 true DE8915912U1 (en) | 1992-02-06 |
Family
ID=6394903
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8915912U Expired - Lifetime DE8915912U1 (en) | 1989-12-06 | 1989-12-06 | Protective element for metallic and/or metallized components |
| DE19893940303 Withdrawn DE3940303A1 (en) | 1989-12-06 | 1989-12-06 | PROTECTIVE ELEMENT FOR METAL AND / OR METALIZED COMPONENTS |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19893940303 Withdrawn DE3940303A1 (en) | 1989-12-06 | 1989-12-06 | PROTECTIVE ELEMENT FOR METAL AND / OR METALIZED COMPONENTS |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE8915912U1 (en) |
| GB (1) | GB2240882A (en) |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2992425A (en) * | 1945-10-12 | 1961-07-11 | Du Pont | Nondirectional, metal-backed, electromagnetic radiation-absorptive films |
| US3124798A (en) * | 1954-06-11 | 1964-03-10 | Reflection-free damping structure for | |
| BE545232A (en) * | 1955-02-23 | |||
| NL273666A (en) * | 1961-02-02 | |||
| NL282827A (en) * | 1961-09-05 | |||
| DE1265251B (en) * | 1963-03-12 | 1968-04-04 | Siemens Ag | Low-reflection broadband damping arrangement for electromagnetic waves |
| US3599210A (en) * | 1969-11-18 | 1971-08-10 | Us Navy | Radar absorptive coating |
| GB2163296B (en) * | 1977-09-01 | 1986-08-13 | Elliott Bros | Reducing radar reflections |
| DE8014209U1 (en) * | 1980-05-27 | 1983-11-17 | Bundesrepublik Deutschland, Vertreten Durch Den Bundesminister Der Verteidigung, 5300 Bonn | COMPOSITE PLATE, SHELL OR THE LIKE WITH LOW REFLECTION OF ELECTROMAGNETIC WAVES "THE ENTRY IS PERFORMED IN ACCORDANCE WITH (PARAGRAPH) 3A OF THE MODEL MODEL. |
| DE3307066A1 (en) * | 1983-03-01 | 1984-09-13 | Dornier Gmbh, 7990 Friedrichshafen | MULTILAYER FIBER COMPOSITE |
| DE8322916U1 (en) * | 1983-08-09 | 1984-03-08 | Eckert, Eberhard, 5300 Bonn | PLATE, BOWL OD. DGL. WITH LOW AND DIFFUSER REFLECTION OF ELECTROMAGNETIC WAVES AND HIGH DAMPING ELECTRO-MAGNETIC IMPULSES |
| DE3508888A1 (en) * | 1985-03-13 | 1986-09-25 | Battelle-Institut E.V., 6000 Frankfurt | Thin-film absorber for electromagnetic waves |
| GB2181898B (en) * | 1985-10-21 | 1990-01-17 | Plessey Co Plc | Electro-magnetic wave absorber surface |
| GB2192756A (en) * | 1986-07-07 | 1988-01-20 | Hoybond Limited | Energy absorbing coatings and their use in camouflage |
| GB2234857B (en) * | 1987-10-07 | 1992-05-20 | Courtaulds Plc | Microwave-absorbing materials |
-
1989
- 1989-12-06 DE DE8915912U patent/DE8915912U1/en not_active Expired - Lifetime
- 1989-12-06 DE DE19893940303 patent/DE3940303A1/en not_active Withdrawn
-
1990
- 1990-12-06 GB GB9026569A patent/GB2240882A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE3940303A1 (en) | 1991-06-13 |
| GB9026569D0 (en) | 1991-01-23 |
| GB2240882A (en) | 1991-08-14 |
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