EP0192048A1 - Reflector antenna with struts in the radiating area - Google Patents
Reflector antenna with struts in the radiating area Download PDFInfo
- Publication number
- EP0192048A1 EP0192048A1 EP86100586A EP86100586A EP0192048A1 EP 0192048 A1 EP0192048 A1 EP 0192048A1 EP 86100586 A EP86100586 A EP 86100586A EP 86100586 A EP86100586 A EP 86100586A EP 0192048 A1 EP0192048 A1 EP 0192048A1
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- European Patent Office
- Prior art keywords
- supporting part
- reflector
- struts
- supports
- support
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- 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.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/02—Details
- H01Q19/021—Means for reducing undesirable effects
- H01Q19/023—Means for reducing undesirable effects for reducing the scattering of mounting structures, e.g. of the struts
Definitions
- the invention relates to an antenna having a parabolic or approximately parabolic-shaped reflector with supports located in the beam path and serving to hold a primary radiator or an auxiliary reflector, each of which is curved in a plane determined by its two end points and the reflector axis (support plane) .
- parabolic reflector antennas with a rotationally symmetrical design are often used, the exciters or auxiliary reflectors of which are supported by supports. These supports lie in the beam path of the emitted or received waves, so that they generate a secondary radiation which, in addition to a reduction in profits, results in rather high side lobes in certain angular ranges of the antenna pattern. These side peaks interfere with neighboring radio links in directional and satellite radio connections and must therefore be kept low.
- the height and distribution of the side lobes in the radiation diagram of Cassegrain antennas are significantly influenced by the scattered radiation of the supporting device of the catch reflector to reduce or redirect to angular ranges that are not so critical with regard to the compliance with the side lobe specification.
- the resulting radiation distribution results from the superposition of the partial field coming from the main reflector and from the column arrangement originating. It is assumed that there is no interaction between the main reflector and the supports, i.e. the effect of the part of the pillar radiation that detects the main reflector is negligible.This is approximately permissible with flat-shaped main reflectors, but with relatively deep reflectors it can be assumed that a substantial part of the pillar scattering radiation hits the main reflector again and there changes the surface currents due to the strong Interaction between the two radiation sources therefore places a limit on this physical view.
- a parabolic reflector antenna which has arc-shaped supports for holding a primary radiator or a catch reflector in a Cassegrain antenna.
- Such an arc-shaped support design also allows the linear phase profile to be changed so that the direction of reflection and laterally scattered radiation is divided into a larger angular range.
- straight supports are known for a directly fed, flat parabolic reflector antenna. which have irregular sawtooth-shaped sheets in the support plane, which also bring about an improvement in the scattered radiation behavior.
- the object of the invention is to provide a support design for a parabolic or approximately parabolic reflector, especially for Cassegrain antennas with a deeply formed main target, which has an even more favorable scattering behavior with a simple technical construction option
- this object is achieved in that the reflection surfaces of the supports are each provided with a scattering structure, the dimension of which is constant in the support plane, while it is perpendicular to the support plane and has a regular wave pattern. or has a meandering course.
- the regularity of the scattering structure according to the invention offers besides the electrical advantage, i.e. the better scattered radiation behavior, also the mechanical advantage that it can be broken down into many identical substructures.
- the scattering structures can be attached to a supporting part of the supports.
- the supporting part of the supports can e.g. have an approximately rectangular cross-section, so that the scattering structures are then attached to and cover the inner surfaces of the supporting parts which form the reflection surfaces of the supports.
- the scattering structures designed according to the invention can be made of electrically conductive material, e.g. Metal, exist, but can also be realized by dielectric material.
- FIG. 1 shows a schematic side view of a reflector antenna constructed according to the Cassegrain principle, as is often used for example in satellite radio technology. It is a rotationally symmetrical double mirror antenna. It has a primary radiator 10 designed as a groove homing, the phase center of which lies at the focal point of a shaped collecting reflector 9. The radiation emanating from the primary radiator 10 is deflected at the catch reflector 9 and reflected onto a main reflector 8 which is approximately in the form of a paraboloid of revolution, from which the radiation into the free space takes place. The catch reflector 9 is held on the main reflector 8 by means of a four-leg made of arcuately curved supports 1.
- the supports 1 lie in the radiation field of the main reflector 8, which has an F / D ratio of approximately 0.25. At the supports 1 curved in the support plane, the plane wave emanating from the main reflector 8 excites secondary radiation, which results in an increase in the secondary tip in the directional characteristic of the reflector antenna. In order to reduce the scattered radiation generated by the supports 1 or to redirect them In angular ranges, which are not critical with regard to compliance with the auxiliary tip specification, scattering structures 2 are attached to the supports 1, the structure of which is explained below with reference to FIGS. 2 and 3.
- the support 1 consists of an approximately rectangular supporting part 3 and of a scattering structure 2 made of electrically conductive or dielectric material attached to the reflection surface 4 of the part 3.
- the dimension of the scattering structure 2 in the column plane ie that plane which is given by the two column end points and the main reflector axis of symmetry, is constant over the entire longitudinal course of the column 1.
- the scattering structures 2 have a regular undulating course perpendicular to the column plane.
- the scattering structure 2 covering the reflecting surface 4 of the supporting part 3 of the support 1 consists, for example, of two elongated sheet metal parts 5 and 6, which enclose a space of approximately triangular cross section towards the supporting part 3 of the support 1 and on which the supporting part 3 of the support 1 opposite edges are connected. At these edges, there is a sharp and wavy edge 7 that runs out jointly for both sheets 5 and 6 with a constant vertical distance from the supporting part 3 of the support 1.
- the scattering structure 2 can also consist of a solid dielectric material which has the same outer shape as the two sheets 5 and 6 and is fastened on the supporting part 3 of the support 1
Abstract
Description
Die Erfindung bezieht sich auf eine einen parabolförmig oder angenähert parabolförmig ausgebildeten Reflektor aufweisende Antenne mit sich im Strahlengang befindenden, der Halterung eines Primärstrahlers oder eines Hilfsreflektors dienenden Stützen, die jeweils in einer durch ihre beiden Endpunkte und die Reflektorachse bestimmten Ebene (Stützenebene) bogenförmig gekrümmt sind.The invention relates to an antenna having a parabolic or approximately parabolic-shaped reflector with supports located in the beam path and serving to hold a primary radiator or an auxiliary reflector, each of which is curved in a plane determined by its two end points and the reflector axis (support plane) .
In der Richt- und Satellitenfunktechnik werden vielfach rotationssymmetrisch ausgebildete Parabolreflektorantennen eingesetzt, deren Erreger oder Hilfsreflektoren von Stützen getragen werden. Diese Stützen liegen im Strahlengang der ausgesendeten oder empfangenen Wellen, so daß sie eine Sekundärstrahlung erzeugen, die neben einer Gewinnminderung ziemlich hohe Nebenzipfel in bestimmten Winkelbereichen des Antennendiagramms zur Folge hat. Diese Nebenzipfel stören bei Richt- und Satellitenfunkverbindungen benachbarte Funkstrecken und müssen daher niedrig gehalten werden. Die Höhe und Verteilung der Nebenzipfel im Strahlungsdiagramm von Cassegrain-Antennen, wie sie vornehmlich in rotationssymmetrischer Ausführung bei Erdefunkstellen für den Satellitenfunkdienst in Gebrauch sind, werden wesentlich von der Streustrahlung der Stützvorrichtung des Fangreflektors beeinflußt Durch eine besondere Ausgestaltung der Stützenstruktur ist es möglich, diese Streustrahlung zu reduzieren bzw. in Winkelbereiche umzuleiten, die bezüglich der Einhaltung der Nebenzipfelspezifikation nicht so kritisch sind.In directional and satellite radio technology, parabolic reflector antennas with a rotationally symmetrical design are often used, the exciters or auxiliary reflectors of which are supported by supports. These supports lie in the beam path of the emitted or received waves, so that they generate a secondary radiation which, in addition to a reduction in profits, results in rather high side lobes in certain angular ranges of the antenna pattern. These side peaks interfere with neighboring radio links in directional and satellite radio connections and must therefore be kept low. The height and distribution of the side lobes in the radiation diagram of Cassegrain antennas, as they are primarily used in a rotationally symmetrical design for earth radio stations for satellite radio service, are significantly influenced by the scattered radiation of the supporting device of the catch reflector to reduce or redirect to angular ranges that are not so critical with regard to the compliance with the side lobe specification.
Ein verhältnismäßig zufriedenstellendes Strahlungsdiagramm ergibt sich bereits dann, wenn der Querschnitt der gerade verlaufenden Stützen ellipsenähnlich verrundet ist Ein solcher Stützenaufbau ist aus dem Aufsatz von G.v.Trentini, K.P. Romeiser und W.Jatsch: "Dimensionierung und elektrische Eigenschaften der 25-m-Antenne der Erdefunkstelle Raisting für Nachricbtenverbindungen über Satelliten" aus der Zeitschrift "Frequenz", Band 19, 1965, Nr.12, Seiten 402-421, insbesondere Seite 412, bekanntA relatively satisfactory radiation diagram is already obtained when the cross section of the straight supports is rounded in the manner of an ellipse. Such a support structure is described in the article by G.v. Trentini, K.P. Romeiser and W.Jatsch: "Dimensioning and electrical properties of the 25 m antenna of the earth radio station Raisting for communications links via satellites" from the magazine "Frequency", Volume 19, 1965, No. 12, pages 402-421, in particular page 412, known
In letzter Zeit sind jedoch die Nebenzipfelspezifikationen in der Richt- und Satellitenfunktechnik erheblich verschärft worden, so daß die Stützenkonfiguration wieder zu einem kritischen Entwurfsparameter beim Aufbau der Parabolreflektorantennen geworden ist. Zum Beispiel in dem in "NTG-Fachberichte", Band 78 "Antennen 82", VDE-Verlag, Berlin und Offenbach, Seiten 86-90 abgedruckten Vortragsmanuskript "Maßnahmen zur Verminderung der Störwirkung von Erregerstützen bei Spiegelantennen" von H. Thielen, V.Hombach und W.Busse wird das Problem der Reduzierung der von Erregerstützen hervorgerufenen Nebenzipfel behandelt Physikalisch wird die einzelne Stütze als Linienquelle mit linearer Phasenverteilung im Nahfeld des Hauptreflektors angesehen. Die resultierende Strahlungsverteilung ergibt sich aus der Überlagerung des vom Hauptreflektor kommenden und des von der Stützenanordnung herrührenden Teilfeldes. Dabei ist angenommen, daß zwischen dem Hauptreflektor und den Stützen keine Wechselwirkung auftritt, d.h. der den Hauptreflektor erfassende Teil der Stützenstrahlung in seiner Wirkung vemachlässigbar ist Dies ist bei flach ausgebildeten Hauptreflektoren zwar näherungsweise zulässig, bei relativ tiefen Reflektoren ist jedoch zu vermuten, daß ein wesentlicher Teil der Stützenstreustrahlung wieder auf den Hauptreflektor trifft und dort die Oberflächenströme verändert Durch die starke Wechselwirkung zwischen beiden Strahlungsquellen ist daher dieser physikalischen Betrachtungsweise eine Grenze gesetzt.Recently, however, the side lobe specifications in directional and satellite radio technology have been tightened considerably, so that the column configuration has again become a critical design parameter in the construction of the parabolic reflector antennas. For example in the lecture manuscript printed in "NTG Technical Reports", volume 78 "Antennas 82", VDE-Verlag, Berlin and Offenbach, pages 86-90 "Measures to reduce the interference effect of excitation supports in mirror antennas" by H. Thielen, V. Hombach and W. Busse dealt with the problem of reducing the side lobes caused by excitation supports. Physically, the individual support is regarded as a line source with a linear phase distribution in the near field of the main reflector. The resulting radiation distribution results from the superposition of the partial field coming from the main reflector and from the column arrangement originating. It is assumed that there is no interaction between the main reflector and the supports, i.e. the effect of the part of the pillar radiation that detects the main reflector is negligible.This is approximately permissible with flat-shaped main reflectors, but with relatively deep reflectors it can be assumed that a substantial part of the pillar scattering radiation hits the main reflector again and there changes the surface currents due to the strong Interaction between the two radiation sources therefore places a limit on this physical view.
Aufbauend auf diesem physikalischen Denkmodell sind bereits verschiedene Stützenanordnungen entwickelt worden. So ist z.B. aus DE-OS 30 47 964 eine Parabolreflektor-Antenne mit einem relativ flachen Hauptreflektor bekannt, bei der gerade verlaufende Stützen mit einer Vielfalt von Streustrukturen vorgesehen sind. Diese bekannte Antenne kann auch eine Cassegrain-Antenne sein, deren Fangreflektor mit den besonders ausgebildeten Stützen getragen wird. Soweit aus DE-OS 30 47 964 ersichtlich ist, werden zur Bildung der Streustrukturen Streukörper mit möglichst irregulärer Geometrie entlang der Stütze verwendet, wobei die entscheidende Abmessung jeweils in der Stützenebene liegt und variiert wird.Various pillar arrangements have already been developed based on this physical model of thinking. For example, from DE-OS 30 47 964 a parabolic reflector antenna with a relatively flat main reflector is known in which straight supports are provided with a variety of scattering structures. This known antenna can also be a Cassegrain antenna, the catch reflector of which is carried with the specially designed supports. As far as can be seen from DE-OS 30 47 964, scattering bodies with as irregular an geometry as possible along the column are used to form the scattering structures, the decisive dimension lying in the column plane and being varied.
Aus der DE-OS 31 00 855 ist eine Parabolreflektorantenne bekannt, die bogenförmig gekrümmte Stützen zur Halterung eines Primärstrahlers oder eines Fangreflelctors bei einer Cassegrain-Antenne aufweist Auch durch eine solche bogenförmige Stützenausbildung läßt sich der lineare Phasenverlauf so ändern, daß die in Reflexionsrichtung und seitlich gestreute Strahlung in einen größeren Winkelbereich aufgeteilt wird. Aus der GB-Patentanmeldung 20 81 023 sind bei einer direkt gespeisten, flachen Parabolreflektorantenne gerade verlaufende Stützen bekannt. welche in der Stützenebene unregelmäßig sägezahnförmig verlaufende Blecte aufweisen, welche ebenfalls eine Verbesserung des Streustrahlverhaltens mit sich bringen.From DE-OS 31 00 855 a parabolic reflector antenna is known which has arc-shaped supports for holding a primary radiator or a catch reflector in a Cassegrain antenna. Such an arc-shaped support design also allows the linear phase profile to be changed so that the direction of reflection and laterally scattered radiation is divided into a larger angular range. From the GB patent application 20 81 023 straight supports are known for a directly fed, flat parabolic reflector antenna. which have irregular sawtooth-shaped sheets in the support plane, which also bring about an improvement in the scattered radiation behavior.
Aufgabe der Erfindung ist es, für einen parabofförmig oder angenähert parabolförmig ausgebildeten Reflektor aufweisende Antennen, insbesondere für Cassegrain-Antennen mit tief ausgebildetem Hauptreffektor, eine Stützen gestaltung zu schaffen, die ein noch günstigeres Streustrahlverhalten bei einfacher technischer Aufbaumöglichkeit aufweistThe object of the invention is to provide a support design for a parabolic or approximately parabolic reflector, especially for Cassegrain antennas with a deeply formed main target, which has an even more favorable scattering behavior with a simple technical construction option
Gemäß der Erfindung, die sich auf eine Antenne der eingangs genannten Art bezieht, wird diese Aufgabe dadurch gelöst, daß die Reflexionsflächen der Stützen jeweils mit einer Streustruktur versehen sind, deren Abmessung in der Stützenebene konstant ist, während sie senkrecht zur Stützenebene einen regelmläßigen wellen- oder mäanderförmigen Verlauf aufweist. Die Regelmäßigkeit der Streustruktur nach der Erfindung bietet außer dem elektrischen Vorteil, d.h. dem besseren Streustrahlverhalten, auch den mechanischen Vorteil, daß eine Zerlegung in viele identische Teilstrukturen möglich ist.According to the invention, which relates to an antenna of the type mentioned at the outset, this object is achieved in that the reflection surfaces of the supports are each provided with a scattering structure, the dimension of which is constant in the support plane, while it is perpendicular to the support plane and has a regular wave pattern. or has a meandering course. The regularity of the scattering structure according to the invention offers besides the electrical advantage, i.e. the better scattered radiation behavior, also the mechanical advantage that it can be broken down into many identical substructures.
Die Streustrukturen lassen sich jeweils auf einem tragenden Teil der Stützen anbringen. Der tragende Teil der Stützen kann z.B. einen etwa rechteckförmigen Querschnitt aufweisen, so daß dann die Streustrukturen jeweils auf den inneren, die Reflexionsflächen der Stützen bildenden Flächen der tragenden Teile angebracht sind und diese abdecken.The scattering structures can be attached to a supporting part of the supports. The supporting part of the supports can e.g. have an approximately rectangular cross-section, so that the scattering structures are then attached to and cover the inner surfaces of the supporting parts which form the reflection surfaces of the supports.
Die nach der Erfindung ausgebildeten Streustrukturen können aus elektrisch leitendem Werkstoff, also z.B. Metall, bestehen, aber auch durch dielektrisches Material realisiert werden.The scattering structures designed according to the invention can be made of electrically conductive material, e.g. Metal, exist, but can also be realized by dielectric material.
Die Erfindung wird im folgenden anhand eines vorteilhaften Ausführungsbeispiels, welches in drei Figuren dargestellt ist, erläutertThe invention is explained below on the basis of an advantageous exemplary embodiment, which is illustrated in three figures
Es zeigen
- Fig. 1 in einer schematischen Seitenansicht eine gemäß der Erfindung ausgebildete Parabolreflektorantenne nach dem Cassegrain-Prinzip.
- Fig. 2 die Querschnittsansicht einer in der Cassegrain-Antenne nach Fig. 1 verwendeten Stütze,
- Fig. 3 die perspektivische Ansicht eines Ausschnitts einer in der Cassegrain-Antenne nach Fig. 1 verwendeten Stütze.
- Fig. 1 is a schematic side view of a parabolic reflector antenna designed according to the invention according to the Cassegrain principle.
- 2 shows the cross-sectional view of a support used in the Cassegrain antenna according to FIG. 1 ,
- Fig. 3 is a perspective view of a section of a support used in the Cassegrain antenna of FIG. 1.
In Fig. 1 ist in einer schematischen Seitendarstellung eine nach dem Cassegrain-Prinzip aufgebaute Reflektorantenne dargestellt, wie sie beispielsweise in der Satellitenfunktechnik häufig eingesetzt wird. Es handelt sich hierbei um eine rotationssymmetrisch aufgebaute Doppelspiegelantenne. Sie weist einen als Rillenhom ausgebildeten Primärstrahier 10 auf, dessen Phasenzentrum im Brennpunkt eines geformten Fangreflektors 9 liegt. Die vom Primärstrahler 10 ausgehende Strahlung wird am Fangreflektor 9 umgelenkt und auf einen näherungsweise als Rotationsparaboloid ausgebildeten Hauptreflektor 8 reflektiert, von dem aus die Abstrahlung in den freien Raum erfolgt. Der Fangreflektor 9 wird am Hauptreflektor 8 mittels eines Vierbeins aus bogenförmig gekrümmten Stützen 1 gehalten. Die Stützen 1 liegen im Strahlungsfeld des Hauptreflektors 8, der ein F/D-Verhältnis von etwa 0,25 aufweist. An den in der Stützebene gekrümmten Stützen 1 wird durch die vom Hauptreflektor 8 ausgehende ebene Welle eine Sekundärstrahlung angeregt, die sich in einer Erhöhung der Nebenzipfet in der Richtcharakteristik der Reflektor-Antenne auswirkt Zur Reduzierung der von den Stützen 1 erzeugten Streustrahlung bzw. zu deren Umleitung in Winkelbereiche, die bezüglich der Einhaltung der Nebenzipfetspezifikation unkritisch sind, sind auf den Stützen 1 Streustrukturen 2 angebracht, deren Aufbau im folgenden anhand der Figuren 2 und 3 erläutert wird.1 shows a schematic side view of a reflector antenna constructed according to the Cassegrain principle, as is often used for example in satellite radio technology. It is a rotationally symmetrical double mirror antenna. It has a primary radiator 10 designed as a groove homing, the phase center of which lies at the focal point of a shaped collecting reflector 9. The radiation emanating from the primary radiator 10 is deflected at the catch reflector 9 and reflected onto a
In einer Querschnittsansicht bzw. in einer perspektivischen Ausschnittsansicht zeigen Fig. 2 und 3 den Aufbau einer Stütze 1 nach der Erfindung. Die Stütze 1 besteht aus einem etwa rechteckförmig ausgebildeten tragenden Teil 3 und aus einer auf der Reflexionsfläche 4 des Teils 3 angebrachten Streustruktur 2 aus elektrisch leitendem oder aus dielektrischem Material. Die Abmessung der Streustruktur 2 in der Stützenebene, d.h. derjenigen Ebene, die durch die beiden Stützenendpunkte und die Hauptreflektorsymmetrieachse gegeben ist, ist über den gesamten Längsverlauf der Stütze 1 konstant Dagegen haben die Streustrukturen 2 senkrecht zur Stützenebene einen regelmäßigen wellenförmigen Verlauf. Die die Reflexionsfläche 4 des tragenden Teils 3 der Stütze 1 abdeckende Streustruktur 2 besteht z.B. aus zwei länglichen Blechteilen 5 und 6, die zum tragenden Teil 3 der Stütze 1 hin einen Raum von etwa dreieckförmigem Querschnitt einschließen und an dem vom tragenden Teil 3 der Stütze 1 abgewandten Rändern miteinander verbunden sind. An diesen Rändern ergibt sich eine für beide Bleche 5 und 6 gemeinsam auslaufende, scharfe und wellenförmige Kante 7 mit einem konstanten senkrechten Abstand vom tragenden Teil 3 der Stütze 1.2 and 3 show the construction of a
Die Streustruktur 2 kann auch aus einem dielektrischen Vollmaterial bestehen, welches die gleiche Außenform wie die beiden Bleche 5 und 6 aufweist und auf dem tragenden Teil 3 der Stütze 1 befestigt istThe scattering structure 2 can also consist of a solid dielectric material which has the same outer shape as the two sheets 5 and 6 and is fastened on the supporting
Aufgrund der Regelmäßigkeit des Wellenverlaufs der Streustrukturen 2 ergibt sich außer dem elektrischen Vorteil auch der mechanische Vorteil, daß eine solche Streustruktur 2 aus mehreren identischen Teilstrukturen zusammengesetzt werden kann.Due to the regularity of the wave shape of the scattering structures 2 there is, in addition to the electrical advantage, the mechanical advantage that such a scattering structure 2 can be composed of several identical substructures.
Claims (9)
dadurch gekennzeichnet , daß die Reflexionsflächen der Stützen (1) jeweils mit einer Streustruktur (2) versehen sind, deren Abmessung in der Stützenebene konstant ist, während sie senkrecht zur Stützenebene einen regelmäßigen weilen- oder mäanderförmigen Verlauf aufweist.1. A parabolic or approximately parabolic reflector having a parabolic reflector antenna with supports located in the beam path that serve to hold a primary radiator or an auxiliary reflector, each curved in a plane determined by its two end points and the reflector axis (support plane),
characterized in that the reflecting surfaces of the supports (1) are each provided with a scattering structure (2), the dimension of which is constant in the support plane, while it is perpendicular to the support plane and has a regular meandering shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT86100586T ATE51471T1 (en) | 1985-01-21 | 1986-01-17 | REFLECTOR ANTENNA WITH SUPPORTS IN THE BEAM PATH. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3501825 | 1985-01-21 | ||
| DE3501825 | 1985-01-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0192048A1 true EP0192048A1 (en) | 1986-08-27 |
| EP0192048B1 EP0192048B1 (en) | 1990-03-28 |
Family
ID=6260326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86100586A Expired - Lifetime EP0192048B1 (en) | 1985-01-21 | 1986-01-17 | Reflector antenna with struts in the radiating area |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0192048B1 (en) |
| AT (1) | ATE51471T1 (en) |
| DE (1) | DE3669958D1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2466688A1 (en) * | 2010-12-14 | 2012-06-20 | Alcatel Lucent | Parabolic reflector antenna |
| EP2493020A1 (en) * | 2009-10-21 | 2012-08-29 | Mitsubishi Electric Corporation | Antenna device |
| RU2464678C1 (en) * | 2011-10-27 | 2012-10-20 | Константин Павлович Харченко | Method of achieving ultrabandwidth of linearly polarised antennae |
| RU2464677C1 (en) * | 2011-09-27 | 2012-10-20 | Константин Павлович Харченко | Method of generating surface electromagnetic process on conical antenna component |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2081023A (en) * | 1980-06-03 | 1982-02-10 | Mitsubishi Electric Corp | Reflector antenna |
| DE3047964A1 (en) * | 1980-12-19 | 1982-07-29 | Deutsche Bundespost, vertreten durch den Präsidenten des Fernmeldetechnischen Zentralamtes, 6100 Darmstadt | Reflector antenna with main side lobe reduced - by distributing irregular bodies along support struts |
| DE3100855A1 (en) * | 1981-01-14 | 1982-08-05 | Deutsche Bundespost, vertreten durch den Präsidenten des Fernmeldetechnischen Zentralamtes, 6100 Darmstadt | Reflector antenna having supports in the beam path which produce secondary radiation |
| DE3307548A1 (en) * | 1983-03-03 | 1984-09-06 | Deutsche Bundespost, vertreten durch den Präsidenten des Fernmeldetechnischen Zentralamtes, 6100 Darmstadt | Mirror antenna having supports, in the beam part, which generate secondary radiation |
-
1986
- 1986-01-17 EP EP86100586A patent/EP0192048B1/en not_active Expired - Lifetime
- 1986-01-17 DE DE8686100586T patent/DE3669958D1/en not_active Expired - Fee Related
- 1986-01-17 AT AT86100586T patent/ATE51471T1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2081023A (en) * | 1980-06-03 | 1982-02-10 | Mitsubishi Electric Corp | Reflector antenna |
| DE3047964A1 (en) * | 1980-12-19 | 1982-07-29 | Deutsche Bundespost, vertreten durch den Präsidenten des Fernmeldetechnischen Zentralamtes, 6100 Darmstadt | Reflector antenna with main side lobe reduced - by distributing irregular bodies along support struts |
| DE3100855A1 (en) * | 1981-01-14 | 1982-08-05 | Deutsche Bundespost, vertreten durch den Präsidenten des Fernmeldetechnischen Zentralamtes, 6100 Darmstadt | Reflector antenna having supports in the beam path which produce secondary radiation |
| DE3307548A1 (en) * | 1983-03-03 | 1984-09-06 | Deutsche Bundespost, vertreten durch den Präsidenten des Fernmeldetechnischen Zentralamtes, 6100 Darmstadt | Mirror antenna having supports, in the beam part, which generate secondary radiation |
Non-Patent Citations (2)
| Title |
|---|
| IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, Band AP-32, Nr. 7, Juli 1984, Seiten 698-705, IEEE, New York, US; T. SATOH et al.: "Sidelobe level reduction by improvement of strut shape" * |
| PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 75 (E-306) [1798], 4. April 1985, Seite 14 E 306; & JP-A-59 208 903 (NIPPON DENKI K.K.) 27.11.1984 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2493020A1 (en) * | 2009-10-21 | 2012-08-29 | Mitsubishi Electric Corporation | Antenna device |
| EP2493020A4 (en) * | 2009-10-21 | 2014-04-16 | Mitsubishi Electric Corp | Antenna device |
| US8766865B2 (en) | 2009-10-21 | 2014-07-01 | Mitsubishi Electric Corporation | Antenna device |
| EP2466688A1 (en) * | 2010-12-14 | 2012-06-20 | Alcatel Lucent | Parabolic reflector antenna |
| RU2464677C1 (en) * | 2011-09-27 | 2012-10-20 | Константин Павлович Харченко | Method of generating surface electromagnetic process on conical antenna component |
| RU2464678C1 (en) * | 2011-10-27 | 2012-10-20 | Константин Павлович Харченко | Method of achieving ultrabandwidth of linearly polarised antennae |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE51471T1 (en) | 1990-04-15 |
| DE3669958D1 (en) | 1990-05-03 |
| EP0192048B1 (en) | 1990-03-28 |
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