DE4344909B4 - Radar antireflection - Google Patents
Radar antireflection Download PDFInfo
- Publication number
- DE4344909B4 DE4344909B4 DE19934344909 DE4344909A DE4344909B4 DE 4344909 B4 DE4344909 B4 DE 4344909B4 DE 19934344909 DE19934344909 DE 19934344909 DE 4344909 A DE4344909 A DE 4344909A DE 4344909 B4 DE4344909 B4 DE 4344909B4
- Authority
- DE
- Germany
- Prior art keywords
- radar
- reflection
- electrically conductive
- conductive layer
- reflection element
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3613—Coatings of type glass/inorganic compound/metal/inorganic compound/metal/other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
- C03C17/3417—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials all coatings being oxide coatings
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3639—Multilayers containing at least two functional metal layers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3642—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating containing a metal layer
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3644—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the metal being silver
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3668—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/18—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes against harmful radiation
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
Radar-Entspiegelungselement (2) zur Reflexionsverminderung von Radarstrahlung (30) an einer Mehrscheiben-Gebäudeverglasung (1), die zumindest eine dünne, transparente erste elektrisch leitende Schicht (14) aufweist,
wobei das Radar-Entspiegelungselement (2) in einem vorgegebenen Abstand auf der Seite der einfallenden Radarstrahlung (30) vor der Mehrscheiben-Gebäudeverglasung (1) angeordnet ist und eine auf einem transparenten, dielektrischen Substrat (21) aufgebrachte, dünne, transparente zweite elektrisch leitende Schicht (20) aufweist und wobei der Abstand (D) zwischen der ersten elektrisch leitenden Schicht (14) der Mehrscheiben-Gebäudeverglasung (1) und der zweiten elektrisch leitenden Schicht (20) in Abhängigkeit vom Einfallswinkel und Polarisationszustand der Radarstrahlung derart bemessen ist, daß das stehende Wellenfeld zwischen den leitenden Schichten (20 und 14, bzw. 31) sich gerade so einstellt, daß die in den leitenden Schichten induzierten Ströme die Radarstrahlung möglichst quantitativ dissipieren,
dadurch gekennzeichnet,
daß der Flächenwiderstand der zweiten elektrisch leitenden Schicht (20) so bemessen ist, daß die Gesamtadmittanz des Radar-Entspiegelungselement (2) und der Mehrscheiben-Gebäudeverglasung...Radar anti-reflection element (2) for reflection reduction of radar radiation (30) on a multi-pane building glazing (1), which has at least one thin, transparent first electrically conductive layer (14),
wherein the radar anti-reflection element (2) is arranged at a predetermined distance on the side of the incident radar radiation (30) in front of the multi-pane building glazing (1) and a thin, transparent second electrically conductive one applied to a transparent, dielectric substrate (21) Layer (20) and wherein the distance (D) between the first electrically conductive layer (14) of the multi-pane building glazing (1) and the second electrically conductive layer (20) depending on the angle of incidence and polarization state of the radar radiation is dimensioned such that the standing wave field between the conductive layers (20 and 14 or 31) is just adjusted so that the currents induced in the conductive layers dissipate the radar radiation as quantitatively as possible,
characterized,
that the surface resistance of the second electrically conductive layer (20) is dimensioned so that the total admittance of the radar anti-reflection element (2) and the multi-pane building glazing ...
Description
Die Erfindung betrifft ein Radar-Entspiegelungselement, das sowohl metallenen Gebäudefassaden als auch einer Gebäudeverglasung zur Reflexionsverminderung von Radarstrahlung vorgesetzt werden kann.The The invention relates to a radar anti-reflection element which is both metallic building facades as well as a building glazing be set to reduce the reflection of radar radiation can.
Insbesondere im Bereich von Flughäfen besteht zunehmend die Problematik, daß die Signale des Flugsicherungsradars an den oft in geringer Entfernung von den stationären Radaranlagen errichteten Organisationsgebäuden des Flughafens reflektiert werden. Diese zusätzlichen Reflexionssignale erschweren die Interpretation und Auswertung der Radarsignale erheblich. An den Fassaden von Gebäuden im Bereich eines Flughafens sind daher Maßnahmen vorzusehen, um die störenden Radarreflexionen zu vermindern.Especially in the area of airports There is an increasing problem that the signals of the air traffic control radar often at a short distance from the stationary radars built organization buildings of the airport. These additional reflection signals complicate the interpretation and evaluation of the radar signals considerably. At the facades of buildings In the area of an airport, therefore, measures should be taken to disturbing Reduce radar reflections.
In diesem Zusammenhang wurde bereits vorgeschlagen, in die Fassadenelemente dispergierte Graphit-Teilchen einzubringen, die die Radarstrahlung nach Art eines Wellensumpfes absorbieren. Diese Maßnahme ist jedoch im Bereich der Sichtfenster des Gebäudes nicht geeignet, da die Graphit-Teilchen nicht nur die Radarstrahlung, sondern auch sichtbares Licht absorbieren.In This connection has already been proposed in the facade elements to introduce dispersed graphite particles containing the radar radiation absorb in the manner of a wave sump. This measure is however, not suitable in the area of the windows of the building, as the Graphite particles not only the radar radiation, but also visible Absorb light.
Aus
der
Aus
der
Andererseits
sind z. B. aus der
Aus
der
Aus
der
In dem Dokument DE-Zeitschrift „ntz”, Band 41 (1988) Heft 5, Seiten 280–283 werden verschiedene Typen von Absorber beschrieben, bei welchen zur Vermeidung von Reflexionen an der Oberfläche des Absorbers die Impedanz des Absorbers an den Wellenwiderstand des freien Raumes von 377 Ω angepasst wird. Hierbei wird insbesondere der Jaumann-Absorber beschrieben, bei welchem die Parallelschaltung aller transformierten Widerstandswerte der Folien an der Oberfläche des Absorbers den Wellenwiderstand des freien Raumes annehmen. Es fließt hierbei jedoch nicht der Widerstand der reflektierenden Fläche, das heißt des Metalls, in die Berechnung der Gesamtadmittanz ein.In the document DE magazine "ntz", volume 41 (1988) Issue 5, pages 280-283 various types of absorber are described in which to avoid reflections on the surface of the absorber the impedance of the absorber adapted to the wave resistance of the free space of 377 Ω becomes. Here, in particular, the Jaumann absorber is described, in which the parallel connection of all the transformed resistance values of the Slides on the surface of the absorber assume the characteristic impedance of the free space. It flows here but not the resistance of the reflective surface, the is called of the metal, in the calculation of the total admittance.
Der Erfindung liegt daher die Aufgabe zugrunde, zur Vermeidung der Radarreflexion an Mehrscheiben-Gebäudeverglasungen, die insbesondere aus Gründen der Wärmeisolation eine dünne, transparente leitende Schicht aufweisen, als auch zur Verminderung der Radarreflexion an metallenen Gebäudefassaden ein geeignetes Radar-Entspiegelungselement anzugeben, das an bestehenden Gebäudefassaden in einfacher Weise nachrüstbar ist.Of the The invention is therefore based on the object to avoid the radar reflection on multi-pane building glazings, especially for reasons the heat insulation a thin, have transparent conductive layer, as well as for the reduction Radar reflection on metal building facades a suitable Radar anti-reflection element to be applied to existing building facades retrofitted in a simple manner is.
Diese Aufgabe wird hinsichtlich der Gebäudeverglasungen durch die Merkmale des Anspruchs 1 und hinsichtlich der metallenen Gebäudefassaden durch die Merkmale des Anspruchs 10 gelöst.These The task is with respect to the building glazing by the features of claim 1 and with regard to the metal building facades the features of claim 10 solved.
Erfindungsgemäß wird der Mehrscheiben-Gebäudeverglasung bzw. dem metallenen Gebäudefassadenelement in einem geeigneten Abstand ein aus einem dielektrischen Substrat und einer darauf aufgebrachten dünnen, transparenten, elektrisch leitenden Schicht bestehendes Radar-Entspiegelungselement vorgesetzt.According to the invention Multi-pane glazing buildings or the metal building facade element at a suitable distance from a dielectric substrate and a thin, transparent, electrically conductive layer existing radar anti-reflection element purposed.
Der Erfindung liegt dabei die Erkenntnis zugrunde, daß das dabei entstehende System zweier planparalleler leitender Schichten als Fabry-Perot-System wirkt und die Reflexion der Radarstrahlung durch resonante Absorption weitgehend unterdrückt. Erfindungsgemäß ist daher der Abstand zwischen der leitenden Schicht der Mehrscheiben-Gebäudefassade bzw. zwischen der Oberfläche der metallenen Gebäudefassade und der in dem Radar-Entspiegelungselement vorgesehenen elektrisch leitenden Schicht derart zu bemessen, daß das stehende Wellenfeld zwischen den leitenden Schichten sich gerade so einstellt, daß die in den leitenden Schichten induzierten Ströme die Radarstrahlung möglichst quantitativ dissipieren. Der Abstand D muss je nach erwartetem Einfallswinkel und Polarisationszustand (s- oder p-Polarisation) der Radarstrahlung unterschiedlich bemessen werden.Of the The invention is based on the finding that this is the case resulting system of two plane-parallel conductive layers as Fabry-Perot system works and the reflection of radar radiation through Resonant absorption largely suppressed. Therefore, according to the invention the distance between the conductive layer of the multi-pane building facade or between the surface the metal building facade and the provided in the radar anti-reflection element electrically conductive layer to be dimensioned such that the standing wave field between the leading layers are just so adjusted that the in The conductive layers induced currents radar radiation as quantitatively as possible dissipate. The distance D must be according to the expected angle of incidence and polarization state (s or p polarization) of the radar radiation differently be measured.
Hierbei ist der Flächenwiderstand der zweiten elektrisch leitenden Schicht so bemessen, dass die Gesamtadmittanz des Radar-Entspiegelungselements, der Mehrscheiben-Gebäudeverglasung bzw. der gesamten Anordnung im Frequenzbereich der Radarstrahlung etwa 1/(377 Ω) beträgt.in this connection is the sheet resistance the second electrically conductive layer dimensioned so that the total admittance the radar anti-reflection element, the multi-pane building glazing or the entire arrangement in the frequency range of the radar radiation about 1 / (377 Ω) is.
Derartige Radar-Entspiegelungselemente können an einer bestehenden Gebäudefassade im Falle des Auftretens unerwünschter Radarreflexe in einfacher Weise nachgerüstet werden.such Radar anti-reflective elements can on an existing building facade in case of occurrence of unwanted Radar reflexes can be retrofitted in a simple manner.
Die Ansprüche 2 bis 9 bzw. 11 bis 15 betreffen vorteilhafte Weiterbildungen der Erfindung.The claims 2 to 9 and 11 to 15 relate to advantageous developments of Invention.
Die dielektrische Schicht des Radar-Entspiegelungselementes kann entweder nach Anspruch 2 bzw. 11 durch eine Glasscheibe oder nach Anspruch 3 bzw. 12 durch eine Kunststoffschicht, insbesondere Polymerglas gebildet werden.The Dielectric layer of the radar anti-reflection element can either according to claim 2 or 11 by a glass pane or according to claim 3 or 12 formed by a plastic layer, in particular polymer glass become.
Mit den in den Ansprüchen 4 bis 5 bzw. 13 angegebenen Parametern der Bemessung der Flächenwiderstände der radarreflektierenden Schichten bzw. der Gesamtadmittanz lassen sich besonders hohe Reflexionsminderungen von mehr als 20 db erreichen. Nach den Ansprüchen 6 und 7 kann die bei Infrarotstrahlung reflektierenden Wärmeschutzbeschichtungen bereits vorhandene elektrisch leitende Schicht für die Radarentspiegelung ausgenutzt werden. Bei Verwendung der Materialien Ag, SnO2 oder Indiumzinnoxid (ITO) läßt sich gleichzeitig eine gute Wärmeisolation und eine wirkungsvollere Radarentspiegelung im Zusammenwirken mit dem Radarentspiegelungselement erreichen.With the specified in the claims 4 to 5 and 13 parameters of the design of the surface resistances of the radar reflecting layers or the total admittance can be particularly high reflections reductions of more than 20 db reach. According to claims 6 and 7, the infrared radiation reflecting heat protection coatings already existing electrically conductive layer can be exploited for the Radarentspiegelung. When using the materials Ag, SnO 2 or indium tin oxide (ITO) can be achieved at the same time a good thermal insulation and a more effective Radarentspiegelung in cooperation with the Radarentspiegelungselement.
Der zwischen dem Radarentspiegelungselement und der Gebäudefassade entstehende Zwischenraum kann nach den Ansprüchen 8 und 9 bzw. 14 und 15 vorteilhaft zur Verbesserung der Wärmeisolation genutzt werden, indem dieser hermetisch abgeschlossen und ggfls. mit einem reduzierten Druck beaufschlagt und/oder mit einem geeigneten Füllgas gefallt wird.Of the between the Radarentspiegelungselement and the building facade resulting gap can according to claims 8 and 9 or 14 and 15 can be used to improve heat insulation, by this hermetically sealed and if necessary. with a reduced pressure charged and / or fallen with a suitable filling gas.
In der Zeichnung sind Ausführungsformen der Erfindung beispielhaft dargestellt. Es zeigen:In The drawings are embodiments of Invention exemplified. Show it:
In
dem in
Der
Zwischenraum
Auf
dem der einfallenden Radarstrahlung
Erfindungsgemäß ist in
einem vorgegebenen Abstand über
dem Doppelverglasungselement
Der
Flächenwiderstand
der Schicht
Erfindungswesentlich
ist die Bemessung des Abstandes D zwischen den beiden elektrisch
leitenden Schichten
Es
ist zu betonen, daß die
Schichten
Eine
Reflexionsminderung von mehr als 20 db konnte erreicht werden, indem
der Flächenwiderstand
der elektrisch leitenden Schicht
Wie
in
Vorteilhaft
kann der Zwischenraum zwischen dem Radar-Entspiegelungselement
Darüber hinaus
ist es möglich,
die in den
Die
Wirkungsweise der Erfindung beruht darauf, daß das Radar-Entspiegelungselement
Mit der vorliegenden Erfindung ergibt sich somit eine einfache, kostengünstige und nachrüstbare Anordnung zur Radar-Entspiegelung von Gebäuden.With The present invention thus provides a simple, inexpensive and retrofittable Arrangement for radar-anti-reflection of buildings.
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934344909 DE4344909B4 (en) | 1993-12-29 | 1993-12-29 | Radar antireflection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934344909 DE4344909B4 (en) | 1993-12-29 | 1993-12-29 | Radar antireflection |
Publications (2)
Publication Number | Publication Date |
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DE4344909A1 DE4344909A1 (en) | 1995-07-06 |
DE4344909B4 true DE4344909B4 (en) | 2009-11-19 |
Family
ID=6506491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE19934344909 Expired - Lifetime DE4344909B4 (en) | 1993-12-29 | 1993-12-29 | Radar antireflection |
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DE (1) | DE4344909B4 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3807600A1 (en) * | 1988-03-08 | 1989-09-21 | Interpane Entw & Beratungsges | LOW-REFLECTIVE, HIGHLY TRANSPARENT IN SUN PROTECTION AND / OR THERMAL INSULATING COATING FOR A SUBSTRATE MADE OF TRANSPARENT MATERIAL |
DE3916416A1 (en) * | 1989-05-19 | 1990-11-22 | Gruenzweig & Hartmann Montage | RADAR RADIATION ABSORBING EXTERIOR FACADE |
DE4008660A1 (en) * | 1990-03-17 | 1991-09-19 | Messerschmitt Boelkow Blohm | Window glass system for high buildings - has double outer skin with layer of radar absorbing material and inner panel |
DE4101074A1 (en) * | 1991-01-16 | 1992-07-23 | Flachglas Ag | Low radar reflection glazing element for building near airport radar installation - has thick front glass pane sepd. by wide space from back glass contg. electroconducting layer |
DE4103458A1 (en) * | 1991-02-06 | 1992-08-20 | Flachglas Ag | TRANSPARENT GLAZING ELEMENT WITH LOW REFLECTION FOR RADAR RADIATION AND HIGH REFLECTION FOR IR RADIATION |
-
1993
- 1993-12-29 DE DE19934344909 patent/DE4344909B4/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3807600A1 (en) * | 1988-03-08 | 1989-09-21 | Interpane Entw & Beratungsges | LOW-REFLECTIVE, HIGHLY TRANSPARENT IN SUN PROTECTION AND / OR THERMAL INSULATING COATING FOR A SUBSTRATE MADE OF TRANSPARENT MATERIAL |
DE3916416A1 (en) * | 1989-05-19 | 1990-11-22 | Gruenzweig & Hartmann Montage | RADAR RADIATION ABSORBING EXTERIOR FACADE |
DE4008660A1 (en) * | 1990-03-17 | 1991-09-19 | Messerschmitt Boelkow Blohm | Window glass system for high buildings - has double outer skin with layer of radar absorbing material and inner panel |
DE4101074A1 (en) * | 1991-01-16 | 1992-07-23 | Flachglas Ag | Low radar reflection glazing element for building near airport radar installation - has thick front glass pane sepd. by wide space from back glass contg. electroconducting layer |
DE4103458A1 (en) * | 1991-02-06 | 1992-08-20 | Flachglas Ag | TRANSPARENT GLAZING ELEMENT WITH LOW REFLECTION FOR RADAR RADIATION AND HIGH REFLECTION FOR IR RADIATION |
Non-Patent Citations (1)
Title |
---|
H.Dominik e.a. "Hochfrequenz-absorbierende Materialien" in DE-Z."ntz", Bd. 41 (1988) Heft 5 Seiten 280-283 * |
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Publication number | Publication date |
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DE4344909A1 (en) | 1995-07-06 |
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