EP0681340A1 - Radar-absorbing window glazing or façade covering - Google Patents

Radar-absorbing window glazing or façade covering Download PDF

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Publication number
EP0681340A1
EP0681340A1 EP95105001A EP95105001A EP0681340A1 EP 0681340 A1 EP0681340 A1 EP 0681340A1 EP 95105001 A EP95105001 A EP 95105001A EP 95105001 A EP95105001 A EP 95105001A EP 0681340 A1 EP0681340 A1 EP 0681340A1
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EP
European Patent Office
Prior art keywords
layer
arrangement according
outer layer
arrangement
radar
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EP95105001A
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German (de)
French (fr)
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EP0681340B1 (en
Inventor
Andreas Dr. Frye
Heimfrid Dr. Gerke
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Airbus Defence and Space GmbH
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Daimler Benz Aerospace AG
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Publication of EP0681340A1 publication Critical patent/EP0681340A1/en
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    • 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
    • H01Q17/007—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with means for controlling the absorption

Definitions

  • the invention relates to a radar-absorbing arrangement for a window glazing or facade cladding in a double-layer construction with a layer partially reflecting electromagnetic radiation arranged in the area of the outer layer and a further reflecting layer arranged in the area of the inner layer at a distance of about a quarter of the operating wavelength.
  • window glazing is described in a double-layer construction, which suppresses the reflection of incident electromagnetic radiation according to the principle of the Jaumann absorber.
  • An arrangement of parallel wires is provided in the outer pane instead of the known resistance layer.
  • the reflection of the radiation penetrating the glazing takes place by means of a metal layer evaporated onto the inner pane.
  • the reflective layer arranged in the region of the inner layer consists of parallel, wire-shaped electrical conductor sections which are arranged in an ordered geometric pattern.
  • FIG. 1 shows a double-layer construction of insulating glazing.
  • the outer pane 2 is arranged at a distance from the inner pane 6 by means of an evacuated or gas-filled intermediate space 4.
  • a facade cladding can also be designed in the same construction.
  • the inner pane 6 is designed as a double pane, a layer 7 of conductor sections L running in parallel being inserted between the individual panes of the double pane.
  • the outer and inner disks 2, 6 can be provided with optically or thermally active coatings if required.
  • the outer layer 1 of the outer pane 2 consists of a purely optically effective coating
  • the inner layer 3 is designed as a heat-insulating coating with a very low electrical conductivity.
  • the coating 3 can be made of metal oxide, for example.
  • the coatings 5 and 8 of the inner pane 6 can also be applied if necessary. However, it should be noted here that these layers have only a very low conductivity in order not to influence the effectiveness of the electrically conductive conductor sections L of layer 7.
  • the arrangement uses the functional principle of the Jaumann absorber, two reflecting layers must be present, the spacing of which from one another essentially depends on the operating frequency of the incident electromagnetic radiation R.
  • the electromagnetic radiation R initially falls on the outer layer 1 of the outer pane 2 or directly on the outer pane 2.
  • the natural reflection of the outer layer or pane is preferably used. If this should not be sufficient, the degree of reflection can be increased, for example, by a vapor-deposited metal layer 1.
  • the second reflection plane is formed by the reflective layer 7 in the area of the inner pane (s) 6.
  • the electrically effective part of the layer 7 consists of parallel, wire-shaped electrical conductor sections L, the preferred direction of which is set as a function of the polarization of the electromagnetic radiation R incident at the installation location. A certain proportion of the transmission T of electromagnetic radiation is tolerated.
  • the thickness of the outer pane 2 is between 8 and 14 mm, that of the inner pane between 6 and 10 mm.
  • the width of the space 4 is set in the range from 12 to 20 mm.
  • the length of the conductor sections L is selected in the range between 5 and 80 cm.
  • the distance d between two adjacent conductor sections L is approximately 10 to 40 mm, the width b of a conductor section is less than 0.5 mm.
  • the dimensioning of the arrangement in the context of these parameters determines the amplitude and the phase shift of the portion of the electromagnetic radiation reflected on the layer 7. Together with the reflection on the outer pane 2, this results in the intensity of the reflection suppression of the overall construction.
  • the reflection plane formed from the conductor sections L results in a reflection intensity which corresponds to a realized resistance of approximately 120 to 180 ⁇ / ⁇ of a surface whose position is at a greater distance from the outer pane 2 than the actual distance between the reflecting ones Layer 7 and the outer pane 2 is.
  • the conditions for a Jaumann absorber are met.
  • the reflective layer is applied to the inside of the outer pane / layer 2 instead of the coating 3.
  • Various designs of the reflective layer 7 have proven to be advantageous.
  • An obvious construction method consists in the use of wire sections which are applied to the pane / layer 2 or 6 in the specified dimensioning.
  • Tungsten wires have proven to be particularly suitable here, because their small thickness means that they can hardly be perceived optically in window glazing.
  • electrically conductive fibers have also proven useful for producing the reflective layer. Electrically conductive fibers, wires or the like can also be used. be incorporated into a textile fabric.
  • a design has proven particularly suitable for window glazing, in which conductive elements L have been applied to a plastic film, for example made of polyvinyl butyral (PVB).
  • the radar-absorbing arrangement according to the invention is not only suitable for window glazing, but in the same way also for similarly constructed facade cladding.
  • window glasses known non-conductive building materials such as building ceramics, fiber cement or laminated material are used in construction. Thermally insulating insulation materials are also suitable.
  • the position and the arrangement of the conductor sections within the described construction methods can easily be adapted to the conditions at the installation site. Furthermore, an adjustment can also be made in that the required distance from the reflecting surface of the outer layer 2 can be adjusted to a limited extent by the phase-dependent shift in the reflection of the reflecting layer 7.
  • the arrangement of the conductor sections L according to the invention does not act in the specified dimensioning like a construction with area-distributed, frequency-selective radiation elements, but the entirety of the conductor sections L produces the reflection behavior of a homogeneous layer with defined surface conductivity, which acts at a virtual location.
  • the arrangement with window glazing has the advantage of high optical transparency.

Abstract

The radar absonant arrangement is of a double layer construction. A reflective layer (1) in the region of the outer layer (2) partly reflects electromagnetic radiation. A further reflective layer (7) is arranged in the region of the inner layer (6) at a spacing of about a quarter wavelength. The reflective layer (7) arranged in the region of the inner layer (6) is made up of wire shaped conductive sections (L) lying parallel to each other. These sections (L) are arranged in an ordered geometric pattern. <IMAGE>

Description

Die Erfindung betrifft eine radarabsorbierende Anordnung für eine Fensterverglasung oder Fassadenverkleidung in Doppelschichtbauweise mit einer im Bereich der Außenschicht angeordneten elektromagnetische Strahlung teilweise reflektierenden Schicht und einer im Bereich der Innenschicht im Abstand von etwa einem Viertel der Betriebswellenlänge angeordneten weiteren reflektierenden Schicht.The invention relates to a radar-absorbing arrangement for a window glazing or facade cladding in a double-layer construction with a layer partially reflecting electromagnetic radiation arranged in the area of the outer layer and a further reflecting layer arranged in the area of the inner layer at a distance of about a quarter of the operating wavelength.

In der Patentschrift 42 27 032 C1 ist eine Fensterverglasung in Doppelschichtbauweise beschrieben, die nach dem Prinzip des Jaumann-Absorbers die Reflexion einfallender elektromagnetischer Strahlung unterdrückt. Dabei ist in der Außenscheibe anstelle der bekannten Widerstandsschicht eine Anordnung paralleler Drähte vorgesehen. Die Reflexion der die Verglasung durchdringenden Strahlung findet mittels einer auf die Innenscheibe aufgedampften Metallschicht statt. Bei der technischen Dimensionierung und Herstellung ergibt sich jedoch das Problem, daß neben der geforderten Präzision und Reproduzierbarkeit der Drahteinlagen die hochleitfähige innenseitig angeordnete Reflexionsschicht unter den gleichen Präzisionsanforderungen herzustellen und einzubauen ist.In the patent specification 42 27 032 C1, window glazing is described in a double-layer construction, which suppresses the reflection of incident electromagnetic radiation according to the principle of the Jaumann absorber. An arrangement of parallel wires is provided in the outer pane instead of the known resistance layer. The reflection of the radiation penetrating the glazing takes place by means of a metal layer evaporated onto the inner pane. In the technical dimensioning and production, however, the problem arises that, in addition to the required precision and reproducibility of the wire inserts, the highly conductive reflection layer arranged on the inside has to be produced and installed under the same precision requirements.

Weiterhin ist aus dem Gebrauchsmuster G 89 15 902.0 ein Fassadenaufbau für Hochbauten bekannt geworden, der wiederum in Doppelschichtbauweise hergestellt wird und der ebenfalls nach dem Prinzip der Interferenzauslösung einfallende elektromagnetische Strahlung absorbiert. Hierbei ist besonders die Widerstandsschicht Ursache für Probleme hinsichtlich der Reproduzierbarkeit bei der Herstellung.Furthermore, from the utility model G 89 15 902.0 a facade structure for high-rise buildings has become known, which in turn is produced in a double-layer construction and which also absorbs incident electromagnetic radiation according to the principle of interference initiation. The resistance layer in particular is the cause of problems with regard to reproducibility in production.

Es ist deshalb Aufgabe der Erfindung, eine Bauweise für radarabsorbierende Fensterverglasungen oder Fassadenverkleidungen anzugeben, die das Herstellverfahren vereinfacht und die eine Anpassung der elektrischen Eigenschaften an die am Einbauort vorgegebenen Verhältnisse erlaubt.It is therefore an object of the invention to provide a design for radar-absorbing window glazing or facade cladding which simplifies the manufacturing process and which allows the electrical properties to be adapted to the conditions specified at the installation site.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die im Bereich der Innenschicht angeordnete reflektierende Schicht aus parallel zueinanderliegenden, drahtförmigen elektrischen Leiterabschnitten besteht, die in einem geordneten geometrischen Muster angeordnet sind.The object is achieved in that the reflective layer arranged in the region of the inner layer consists of parallel, wire-shaped electrical conductor sections which are arranged in an ordered geometric pattern.

Weitere vorteilhafte Ausgestaltungen der Anordnung sind in den Unteransprüchen beschrieben.Further advantageous refinements of the arrangement are described in the subclaims.

Die besonderen Vorteile der erfindungsgemäßen Bauweise liegen zum einen in der erheblich erleichterten und preisgünstigeren Herstellbarkeit und zum anderen in der umfangreichen Anpassungsfähigkeit der Anordnung an die elektromagnetischen und baumechanischen Gegebenheiten am Einbauort.The particular advantages of the construction method according to the invention lie on the one hand in the considerably easier and cheaper manufacture, and on the other hand in the extensive adaptability of the arrangement to the electromagnetic and structural conditions at the installation site.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben. Es zeigen:

Fig. 1
einen Schnitt durch eine Isolierverglasung mit zwei Scheiben;
Fig. 2
eine Variante einer radarabsorbierenden Doppelschichtanordnung.
Embodiments of the invention are shown in the drawing and are described in more detail below. Show it:
Fig. 1
a section through double glazing with two panes;
Fig. 2
a variant of a radar-absorbing double-layer arrangement.

Das Ausführungsbeispiel in Fig. 1 zeigt eine Doppelschichtbauweise einer Isolierverglasung. Die Außenscheibe 2 ist mittels eines evakuierten oder gasgefüllten Zwischenraumes 4 von der Innenscheibe 6 beabstandet angeordnet. In der gleichen Bauweise kann auch eine Fassadenverkleidung gestaltet sein.The exemplary embodiment in FIG. 1 shows a double-layer construction of insulating glazing. The outer pane 2 is arranged at a distance from the inner pane 6 by means of an evacuated or gas-filled intermediate space 4. A facade cladding can also be designed in the same construction.

Die Innenscheibe 6 ist hierbei als Doppelscheibe ausgeführt, wobei zwischen den Einzelscheiben der Doppelscheibe eine Schicht 7 aus parallel verlaufenden Leiterabschnitten L eingefügt ist. Die Außen- und die Innenscheibe 2,6 können bei Bedarf mit optisch bzw. thermisch wirksamen Beschichtungen versehen sein. So besteht die außenliegende Schicht 1 der Außenscheibe 2 aus einer rein optisch wirksamen Beschichtung, während die innenliegende Schicht 3 als wärmedämmende Beschichtung mit einer sehr geringen elektrischen Leitfähigkeit ausgeführt ist. Die Beschichtung 3 kann beispielsweise aus Metalloxid hergestellt sein. Die Beschichtungen 5 und 8 der Innenscheibe 6 können ebenfalls bei Bedarf aufgebracht sein. Es ist hierbei jedoch zu beachten, daß diese Schichten eine nur sehr geringe Leitfähigkeit aufweisen, um die Wirksamkeit der elektrisch leitfähigen Leiterabschnitte L der Schicht 7 nicht zu beeinflussen.The inner pane 6 is designed as a double pane, a layer 7 of conductor sections L running in parallel being inserted between the individual panes of the double pane. The outer and inner disks 2, 6 can be provided with optically or thermally active coatings if required. Thus, the outer layer 1 of the outer pane 2 consists of a purely optically effective coating, while the inner layer 3 is designed as a heat-insulating coating with a very low electrical conductivity. The coating 3 can be made of metal oxide, for example. The coatings 5 and 8 of the inner pane 6 can also be applied if necessary. However, it should be noted here that these layers have only a very low conductivity in order not to influence the effectiveness of the electrically conductive conductor sections L of layer 7.

Da die Anordnung das Funktionsprinzip des Jaumann-Absorbers benutzt, müssen zwei reflektierende Schichten vorhanden sein, deren Abstand zueinander im wesentlichen von der Betriebsfrequenz der einfallenden elektromagnetischen Strahlung R abhängig ist. Wie in Fig. 1 dargestellt, fällt die elektromagnetische Strahlung R zunächst auf die Außenschicht 1 der Außenscheibe 2 bzw. direkt auf die Außenscheibe 2. Hierbei wird vorzugsweise die natürliche Reflexion der Außenschicht bzw. -scheibe ausgenutzt. Falls diese nicht ausreichen sollte, kann der Reflexionsgrad beispielsweise durch eine aufgedampfte Metallschicht 1 erhöht werden.Since the arrangement uses the functional principle of the Jaumann absorber, two reflecting layers must be present, the spacing of which from one another essentially depends on the operating frequency of the incident electromagnetic radiation R. As shown in FIG. 1, the electromagnetic radiation R initially falls on the outer layer 1 of the outer pane 2 or directly on the outer pane 2. Here, the natural reflection of the outer layer or pane is preferably used. If this should not be sufficient, the degree of reflection can be increased, for example, by a vapor-deposited metal layer 1.

Die zweite Reflexionsebene wird durch die reflektierende Schicht 7 im Bereich der Innenscheibe(n) 6 gebildet. Der elektrisch wirksame Teil der Schicht 7 besteht aus parallel zueinanderliegenden, drahtförmigen elektrischen Leiterabschnitten L, deren Vorzugsrichtung abhängig von der Polarisation der am Einbauort einfallenden elektromagnetischen Strahlung R eingestellt wird. Ein bestimmter Anteil der Transmission T elektromagnetischer Strahlung wird dabei toleriert. Bei einer Dimensionierung der Anordnung für eine Betriebsfrequenz von etwa 1 GHz ergeben sich folgende vorteilhafte Bemaßungen: Die Dicke der Außenscheibe 2 beträgt zwischen 8 und 14 mm, die der Innenscheibe zwischen 6 und 10 mm. Die Weite des Zwischenraumes 4 wird im Bereich von 12 bis 20 mm eingestellt. Die Länge der Leiterabschnitte L wird im Bereich zwischen 5 und 80 cm gewählt. Der Abstand d zweier benachbarter Leiterabschnitte L beträgt etwa 10 bis 40 mm, die Breite b eines Leiterabschnittes ist kleiner als 0,5 mm. Die Dimensionierung der Anordnung im Rahmen dieser Parameter bestimmt die Amplitude und die Phasenverschiebung des an der Schicht 7 reflektierten Anteils der elektromagnetischen Strahlung. Hieraus ergibt sich zusammen mit der Reflexion an der Außenscheibe 2 die Intensität der Reflexionsunterdrückung der Gesamtbauweise.The second reflection plane is formed by the reflective layer 7 in the area of the inner pane (s) 6. The electrically effective part of the layer 7 consists of parallel, wire-shaped electrical conductor sections L, the preferred direction of which is set as a function of the polarization of the electromagnetic radiation R incident at the installation location. A certain proportion of the transmission T of electromagnetic radiation is tolerated. When dimensioning the Arrangement for an operating frequency of approximately 1 GHz results in the following advantageous dimensions: The thickness of the outer pane 2 is between 8 and 14 mm, that of the inner pane between 6 and 10 mm. The width of the space 4 is set in the range from 12 to 20 mm. The length of the conductor sections L is selected in the range between 5 and 80 cm. The distance d between two adjacent conductor sections L is approximately 10 to 40 mm, the width b of a conductor section is less than 0.5 mm. The dimensioning of the arrangement in the context of these parameters determines the amplitude and the phase shift of the portion of the electromagnetic radiation reflected on the layer 7. Together with the reflection on the outer pane 2, this results in the intensity of the reflection suppression of the overall construction.

Bei der vorgegebenen Dimensionierung ergibt sich für die aus den Leiterabschnitten L gebildete Reflexionsebene eine Reflexionsintensität, die einem realisierten Widerstand von etwa 120 bis 180 Ω/□ einer Oberfläche entspricht, deren Lage einen größeren Abstand zur äußeren Scheibe 2 hat als der tatsächliche Abstand zwischen der reflektierenden Schicht 7 und der Außenscheibe 2 ist. Somit sind unter der Voraussetzung, daß die reflektierende Oberfläche der Außenscheibe 2 und der fiktive Reflexionsort der reflektierenden Schicht 7 etwa ein Viertel der Betriebswellenlänge voneinander beabstandet sind, die Bedingungen für einen Jaumann-Absorber erfüllt.Given the specified dimensioning, the reflection plane formed from the conductor sections L results in a reflection intensity which corresponds to a realized resistance of approximately 120 to 180 Ω / □ of a surface whose position is at a greater distance from the outer pane 2 than the actual distance between the reflecting ones Layer 7 and the outer pane 2 is. Thus, on the condition that the reflecting surface of the outer pane 2 and the fictitious reflection location of the reflecting layer 7 are spaced apart by about a quarter of the operating wavelength, the conditions for a Jaumann absorber are met.

Die Fig. 2 zeigt eine Variante der bereits beschriebenen Bauweise. Hierbei wird die reflektierende Schicht auf der Innenseite der Außenscheibe/-schicht 2 anstelle der Beschichtung 3 angebracht. Durch Abwandlung der oben genannten Dimensionierungsvorschriften werden ebenso die Bedingungen für einen Jaumann-Absorber erfüllt.2 shows a variant of the construction already described. Here, the reflective layer is applied to the inside of the outer pane / layer 2 instead of the coating 3. By modifying the dimensioning regulations mentioned above, the conditions for a Jaumann absorber are also met.

Als vorteilhaft haben sich verschiedene Ausführungen der reflektierenden Schicht 7 erwiesen. Eine naheliegende Bauweise besteht in der Verwendung von Drahtabschnitten, die in der angegebenen Dimensionierung auf die Scheibe/Schicht 2 bzw. 6 aufgebracht werden. Als besonders geeignet haben sich hierbei Wolframdrähte erwiesen, die aufgrund ihrer geringen Dicke in einer Fensterverglasung kaum noch optisch wahrgenommen werden können. Je nach Anwendungsfall haben sich auch elektrisch leitfähige Fasern zur Herstellung der reflektierenden Schicht bewährt. Ebenso können elektrisch leitfähige Fasern, Drähte o.ä. in einem textilen Gewebe eingearbeitet sein. Für Fensterverglasungen hat sich eine Bauweise als besonders geeignet erwiesen, bei der leitfähige Elemente L auf einer Kunststoffolie, beispielsweise aus Polyvinylbutyral (PVB), aufgebracht worden sind.Various designs of the reflective layer 7 have proven to be advantageous. An obvious construction method consists in the use of wire sections which are applied to the pane / layer 2 or 6 in the specified dimensioning. Tungsten wires have proven to be particularly suitable here, because their small thickness means that they can hardly be perceived optically in window glazing. Depending on the application, electrically conductive fibers have also proven useful for producing the reflective layer. Electrically conductive fibers, wires or the like can also be used. be incorporated into a textile fabric. A design has proven particularly suitable for window glazing, in which conductive elements L have been applied to a plastic film, for example made of polyvinyl butyral (PVB).

Die erfindungsgemäße radarabsorbierende Anordnung eignet sich nicht nur für Fensterverglasungen, sondern in gleicher Weise auch für ähnlich aufgebaute Fassadenverkleidungen. Anstelle der Fenstergläser werden im Bauwesen bekannte nicht leitfähige Baustoffe wie Baukeramik, Faserzement oder Schichtpreß-Werkstoff eingesetzt. Thermisch wirksame Isolierdämmstoffe sind ebenfalls geeignet.The radar-absorbing arrangement according to the invention is not only suitable for window glazing, but in the same way also for similarly constructed facade cladding. Instead of the window glasses, known non-conductive building materials such as building ceramics, fiber cement or laminated material are used in construction. Thermally insulating insulation materials are also suitable.

Beim Herstellprozeß sind die Lage und die Anordnung der Leiterabschnitte innerhalb der beschriebenen Bauweisen leicht an die am Einbauort gegebenen Verhältnisse anzupassen. Weiterhin kann eine Anpassung auch dadurch erfolgen, daß der erforderliche Abstand zur reflektierenden Oberfläche der Außenschicht 2 durch die phasenbedingte Verschiebung der Reflexion der reflektierenden Schicht 7 eingeschränkt einstellbar ist. Die erfindungsgemäße Anordnung der Leiterabschnitte L wirkt in der angegebenen Dimensionierung nicht wie eine Bauweise mit flächig verteilten, frequenzselektiv wirksamen Strahlungselementen, sondern die Gesamtheit der Leiterabschnitte L erzeugt das Reflexionsverhalten einer homogenen Schicht mit definierter Oberflächenleitfähigkeit, die an einem virtuellen Ort wirkt.In the manufacturing process, the position and the arrangement of the conductor sections within the described construction methods can easily be adapted to the conditions at the installation site. Furthermore, an adjustment can also be made in that the required distance from the reflecting surface of the outer layer 2 can be adjusted to a limited extent by the phase-dependent shift in the reflection of the reflecting layer 7. The arrangement of the conductor sections L according to the invention does not act in the specified dimensioning like a construction with area-distributed, frequency-selective radiation elements, but the entirety of the conductor sections L produces the reflection behavior of a homogeneous layer with defined surface conductivity, which acts at a virtual location.

Darüber hinaus weist die Anordnung bei Fensterverglasungen den Vorteil einer hohen optischen Transparenz auf.In addition, the arrangement with window glazing has the advantage of high optical transparency.

Claims (13)

Radarabsorbierende Anordnung für eine Fensterverglasung oder Fassadenverkleidung in Doppelschichtbauweise mit einer im Bereich der Außenschicht angeordneten elektromagnetische Strahlung teilweise reflektierenden Schicht und einer im Bereich der Innenschicht im Abstand von etwa einem Viertel der Betriebswellenlänge angeordneten weiteren reflektierenden Schicht, dadurch gekennzeichnet, daß die im Bereich der Innenschicht (6) angeordnete reflektierende Schicht (7) aus parallel zueinander liegenden, drahtförmigen elektrischen Leiterabschnitten (L) besteht, die in einem geordneten geometrischen Muster angeordnet sind.Radar-absorbing arrangement for a window glazing or facade cladding in a double-layer construction with an electromagnetic radiation partially reflecting layer arranged in the area of the outer layer and a further reflecting layer arranged in the area of the inner layer at a distance of about a quarter of the operating wavelength, characterized in that the 6) arranged reflecting layer (7) consists of parallel, wire-shaped electrical conductor sections (L), which are arranged in an ordered geometric pattern. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die reflektierende Schicht (7) aus elektrisch leitfähigen Fasern besteht.Arrangement according to claim 1, characterized in that the reflective layer (7) consists of electrically conductive fibers. Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die elektrisch leitfähigen Elemente (L) in einem textilen Gewebe eingearbeitet sind.Arrangement according to claim 1 or 2, characterized in that the electrically conductive elements (L) are incorporated in a textile fabric. Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die elektrisch leitfähigen Elemente (L) auf einer Kunststoffolie aufgebracht sind.Arrangement according to claim 1 or 2, characterized in that the electrically conductive elements (L) are applied to a plastic film. Anordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die reflektierende Schicht (7) auf einer Oberfläche (5) der Innenschicht (6) angebracht ist.Arrangement according to one of claims 1 to 4, characterized in that the reflective layer (7) is attached to a surface (5) of the inner layer (6). Anordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Innenschicht (6) als Doppelschicht ausgeführt ist, in der die reflektierende Schicht (7) angeordnet ist.Arrangement according to one of claims 1 to 4, characterized in that the inner layer (6) is designed as a double layer in which the reflective layer (7) is arranged. Anordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Innen- und/oder Außenschicht (2,6) aus Floatglas bestehen.Arrangement according to one of claims 1 to 6, characterized in that the inner and / or outer layer (2,6) consist of float glass. Anordnung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Innenschicht (6) und/oder Außenschicht (2) als Verbundsicherheitsglas ausgeführt ist.Arrangement according to one of claims 1 to 7, characterized in that the inner layer (6) and / or outer layer (2) is designed as a laminated safety glass. Anordnung nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die reflektierende Schicht (7) im Verbundsicherheitsglas angeordnet ist.Arrangement according to claim 7 or 8, characterized in that the reflective layer (7) is arranged in the laminated safety glass. Anordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Innen- und/oder Außenschicht (2,6) aus einem baukeramischen Material besteht.Arrangement according to one of claims 1 to 6, characterized in that the inner and / or outer layer (2,6) consists of a building ceramic material. Anordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Innen- und/oder Außenschicht (2,6) aus Faserzement besteht.Arrangement according to one of claims 1 to 6, characterized in that the inner and / or outer layer (2,6) consists of fiber cement. Anordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Innen- und/oder Außenschicht (2,6) aus einem Schichtpreß-Werkstoff besteht.Arrangement according to one of claims 1 to 6, characterized in that the inner and / or outer layer (2,6) consists of a laminated material. Anordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Innen- und/oder Außenschicht (2,6) aus einem Isolierdämmstoff besteht.Arrangement according to one of claims 1 to 6, characterized in that the inner and / or outer layer (2,6) consists of an insulating material.
EP95105001A 1994-05-06 1995-04-04 Radar-absorbing window glazing or façade covering Expired - Lifetime EP0681340B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4416165 1994-05-06
DE4416165A DE4416165C2 (en) 1994-05-06 1994-05-06 Radar-absorbing arrangement for window glazing or facade cladding

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EP0681340A1 true EP0681340A1 (en) 1995-11-08
EP0681340B1 EP0681340B1 (en) 1999-10-27

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EP95105001A Expired - Lifetime EP0681340B1 (en) 1994-05-06 1995-04-04 Radar-absorbing window glazing or façade covering

Country Status (2)

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EP (1) EP0681340B1 (en)
DE (2) DE4416165C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19707585A1 (en) * 1997-02-26 1998-09-03 Bosch Gmbh Robert Housing with radar absorbing properties
EP1039577A2 (en) * 1999-03-26 2000-09-27 DaimlerChrysler AG Radar absorbing laminated glazing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19756718B4 (en) * 1997-12-19 2004-03-25 Eads Deutschland Gmbh Facade panel and facade for a building wall
DE10018276A1 (en) * 2000-04-13 2001-10-25 Saint Gobain Sekurit D Gmbh Composite disc

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Publication number Priority date Publication date Assignee Title
EP0238291A1 (en) * 1986-03-18 1987-09-23 Nippon Carbon Co., Ltd. Electromagnetic wave absorbers
EP0405077A1 (en) * 1989-06-06 1991-01-02 Daimler-Benz Aerospace Aktiengesellschaft Façade cover for rising structures
EP0413580A1 (en) * 1989-08-18 1991-02-20 Pilkington Plc Electromagnetic shielding panel
DE4006352A1 (en) * 1990-03-01 1991-09-05 Dornier Luftfahrt Radar absorber for aircraft or spacecraft - has dielectric properties variable using alternate high and low conductivity layers
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
EP0499868A2 (en) * 1991-02-06 1992-08-26 Flachglas Aktiengesellschaft Glass sheeting element with low degree of radar reflection
DE4227032C1 (en) * 1992-08-14 1993-09-30 Deutsche Aerospace Window glazing

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0238291A1 (en) * 1986-03-18 1987-09-23 Nippon Carbon Co., Ltd. Electromagnetic wave absorbers
EP0405077A1 (en) * 1989-06-06 1991-01-02 Daimler-Benz Aerospace Aktiengesellschaft Façade cover for rising structures
DE8915902U1 (en) * 1989-06-06 1992-02-13 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De
EP0413580A1 (en) * 1989-08-18 1991-02-20 Pilkington Plc Electromagnetic shielding panel
DE4006352A1 (en) * 1990-03-01 1991-09-05 Dornier Luftfahrt Radar absorber for aircraft or spacecraft - has dielectric properties variable using alternate high and low conductivity layers
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
EP0499868A2 (en) * 1991-02-06 1992-08-26 Flachglas Aktiengesellschaft Glass sheeting element with low degree of radar reflection
DE4227032C1 (en) * 1992-08-14 1993-09-30 Deutsche Aerospace Window glazing
EP0583557A1 (en) * 1992-08-14 1994-02-23 Daimler-Benz Aerospace Aktiengesellschaft Window glazing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19707585A1 (en) * 1997-02-26 1998-09-03 Bosch Gmbh Robert Housing with radar absorbing properties
EP1039577A2 (en) * 1999-03-26 2000-09-27 DaimlerChrysler AG Radar absorbing laminated glazing
EP1039577A3 (en) * 1999-03-26 2003-01-02 DaimlerChrysler AG Radar absorbing laminated glazing

Also Published As

Publication number Publication date
DE4416165A1 (en) 1995-11-09
DE59507115D1 (en) 1999-12-02
EP0681340B1 (en) 1999-10-27
DE4416165C2 (en) 1998-10-15

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