DE3940303A1 - PROTECTIVE ELEMENT FOR METAL AND / OR METALIZED COMPONENTS - Google Patents
PROTECTIVE ELEMENT FOR METAL AND / OR METALIZED COMPONENTSInfo
- Publication number
- DE3940303A1 DE3940303A1 DE19893940303 DE3940303A DE3940303A1 DE 3940303 A1 DE3940303 A1 DE 3940303A1 DE 19893940303 DE19893940303 DE 19893940303 DE 3940303 A DE3940303 A DE 3940303A DE 3940303 A1 DE3940303 A1 DE 3940303A1
- Authority
- DE
- Germany
- Prior art keywords
- element according
- protective element
- protection element
- lossy
- sound box
- 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.)
- Withdrawn
Links
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
Description
Die Erfindung bezieht sich auf ein Schutzelement für metal lische und/oder metallisierte Bauteile zur Verringerung der Radarreflektivität und/oder Radartransmission.The invention relates to a protective element for metal lische and / or metallized components to reduce the Radar reflectivity and / or radar transmission.
Zum Schutz gegen Radarerfassung sind eine Vielzahl von Maß nahmen insbesondere zur Reflexionsunterdrückung der Radarwel len bekannt. Solche als Radarabsorber bezeichneten Schutzele mente werden üblicherweise in Breitbandabsorber und Interfe renzabsorber unterteilt. Breitbandabsorber bieten einfallen den 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 Absorber struktur eindringt und dort nach und nach ohne störende in terne Reflexion in Wärme umgesetzt wird.To protect against radar detection are a variety of dimensions took particular to suppress reflection of the radar world len known. Such protective elements referred to as radar absorbers elements are usually used in broadband absorbers and interfaces renzabsorber divided. Broadband absorbers come up with ideas the radar waves have a smooth transition on their surfaces from the air into the absorber structure so that at minimal Reflection of most of the radar energy in the absorber structure penetrates and there gradually without disturbing in internal reflection is converted into heat.
Interferenzabsorber basieren hingegen auf dem Prinzip Radar leistungsanteile an der Absorberoberfläche und gegebenenfalls dahinter liegender Sprungstellen derart in Amplitude und Pha se aufeinander abzustimmen, damit eine optimale Auslöschung der Radarenergie durch destruktive Überlagerung der einzeln reflektierten Anteile erfolgt. Interferenzabsorber sind bei einlagigem Aufbau schmalbandig aber durch einen Mehrschicht aufbau kann die Absorptionsbandbreite in gewissen Grenzen vergrößert werden.In contrast, interference absorbers are based on the principle of radar power shares on the absorber surface and if necessary the jump points behind it in amplitude and pha coordinated with each other so that optimal extinction of radar energy through destructive superimposition of each reflected portions. Interference absorbers are at single-layer construction narrow-band but through a multi-layer the absorption bandwidth can build up within certain limits be enlarged.
Der Erfindung liegt daher die Aufgabe zugrunde, die Absorptionsbandbreite eines Radarabsorbers zu vergrößern und gleichzeitig seine Dicke zu verringern. Diese Aufgabe ist gemäß der Erfindung dadurch gelöst, daß das Schutzelement leitende Resonanzkörper enthält, die ganz oder teilweise in eine verlustbehaftete Matrix eingebettet sind. The invention is therefore based on the object To increase the absorption bandwidth of a radar absorber and reducing its thickness at the same time. This task is solved according to the invention in that the protective element contains conductive sound boxes, all or part of a lossy matrix is embedded.
Die erfindungsgemäße Maßnahme hat den Vorteil daß durch Verteilung, Größe, Form und Orientierung der Resonanzkörper der Frequenz- und der Polarisationsbereich des Schutzele ments 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. absorbier endem 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 measure according to the invention has the advantage that Distribution, size, shape and orientation of the sound box the frequency and polarization range of the protective element ment set, d. H. the absorption bandwidth and the Degree of absorption can be determined. By bringing in the metallic conductive resonance body in an environment, all or part of lossy or absorbent the medium, the incident radar energy destroyed or converted into heat. The sound box can be made of metallic or metallized fibers or Hollow fibers exist, which are the incident ones at resonance Optimally absorb radar energy and to the surrounding area Dispense absorber matrix for absorption.
Die Resonanzkörper können dazu dreidimensional und gleich mäßig oder in geeingneter Schicht bzw. Gradientenanordnung in der Absorbermatrix verteilt werden und, wie bereits erwähnt, zur Einstellung des Absorptionsgrades der Absorpti onsbandbreite 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 Absorptions bandbreite in erheblich verringerter Dicke hergestellt wer den.The sound boxes can be three-dimensional and the same moderately or in a suitable layer or gradient arrangement be distributed in the absorber matrix and, as already mentioned, to adjust the degree of absorption of the Absorpti bandwidth in distribution, shape, size and orientation, e.g. B. aligned perpendicular to the coating plane. If necessary, a cover layer on the protective element ensures that the incident radar radiation with minimal reflection can penetrate into the protective element at this layer. The Protective element can with significantly widened absorption bandwidth manufactured in a significantly reduced thickness the.
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8915912U DE8915912U1 (en) | 1989-12-06 | 1989-12-06 | |
DE19893940303 DE3940303A1 (en) | 1989-12-06 | 1989-12-06 | PROTECTIVE ELEMENT FOR METAL AND / OR METALIZED COMPONENTS |
GB9026569A GB2240882A (en) | 1989-12-06 | 1990-12-06 | Electromagnetic radiation absorbent material |
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 |
---|---|
DE3940303A1 true DE3940303A1 (en) | 1991-06-13 |
Family
ID=6394903
Family Applications (2)
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 |
DE8915912U Expired - Lifetime DE8915912U1 (en) | 1989-12-06 | 1989-12-06 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8915912U Expired - Lifetime DE8915912U1 (en) | 1989-12-06 | 1989-12-06 |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE3940303A1 (en) |
GB (1) | GB2240882A (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1004248B (en) * | 1955-02-23 | 1957-03-14 | Werner Genest Ges Fuer Isolier | Resonance absorber for absorbing electromagnetic centimeter waves |
US2992425A (en) * | 1945-10-12 | 1961-07-11 | Du Pont | Nondirectional, metal-backed, electromagnetic radiation-absorptive films |
GB1074898A (en) * | 1961-02-02 | 1967-07-05 | Eltro Gmbh | Improvements in devices for absorbing elector-magnetic waves |
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. |
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 |
DE3307066A1 (en) * | 1983-03-01 | 1984-09-13 | Dornier Gmbh, 7990 Friedrichshafen | MULTILAYER FIBER COMPOSITE |
GB2163296A (en) * | 1977-09-01 | 1986-02-19 | Elliott Bros | Reducing radar reflections |
DE3508888A1 (en) * | 1985-03-13 | 1986-09-25 | Battelle-Institut E.V., 6000 Frankfurt | Thin-film absorber for electromagnetic waves |
GB2181898A (en) * | 1985-10-21 | 1987-04-29 | Plessey Co Plc | Electro-magnetic wave absorbers |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3124798A (en) * | 1954-06-11 | 1964-03-10 | Reflection-free damping structure for | |
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 |
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 DE19893940303 patent/DE3940303A1/en not_active Withdrawn
- 1989-12-06 DE DE8915912U patent/DE8915912U1/de not_active Expired - Lifetime
-
1990
- 1990-12-06 GB GB9026569A patent/GB2240882A/en not_active Withdrawn
Patent Citations (9)
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 |
DE1004248B (en) * | 1955-02-23 | 1957-03-14 | Werner Genest Ges Fuer Isolier | Resonance absorber for absorbing electromagnetic centimeter waves |
GB1074898A (en) * | 1961-02-02 | 1967-07-05 | Eltro Gmbh | Improvements in devices for absorbing elector-magnetic waves |
GB2163296A (en) * | 1977-09-01 | 1986-02-19 | 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 |
GB2181898A (en) * | 1985-10-21 | 1987-04-29 | Plessey Co Plc | Electro-magnetic wave absorbers |
Non-Patent Citations (2)
Title |
---|
DOMINIK, H. et al: Hochfrequenzabsorbierende Materialien. In: ntz Bd.41 (1988) H.5, S.280-283 * |
N.N.: STEALTH-Technologie und -Taktik. In: wt/89, S.61-63 * |
Also Published As
Publication number | Publication date |
---|---|
GB9026569D0 (en) | 1991-01-23 |
GB2240882A (en) | 1991-08-14 |
DE8915912U1 (en) | 1992-02-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal |