EP0925618B1 - Satellite reception antenna - Google Patents

Satellite reception antenna Download PDF

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Publication number
EP0925618B1
EP0925618B1 EP97937641A EP97937641A EP0925618B1 EP 0925618 B1 EP0925618 B1 EP 0925618B1 EP 97937641 A EP97937641 A EP 97937641A EP 97937641 A EP97937641 A EP 97937641A EP 0925618 B1 EP0925618 B1 EP 0925618B1
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EP
European Patent Office
Prior art keywords
box
receiving antenna
antenna according
source
reflector
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
Application number
EP97937641A
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German (de)
French (fr)
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EP0925618A1 (en
Inventor
Patrick Bourquin
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Tele-Equipement
Tele Equipement
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Tele-Equipement
Tele Equipement
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Publication of EP0925618A1 publication Critical patent/EP0925618A1/en
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Classifications

    • 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
    • H01Q19/10—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 using reflecting surfaces
    • H01Q19/12—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 using reflecting surfaces wherein the surfaces are concave
    • H01Q19/13—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 using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • H01Q19/132—Horn reflector antennas; Off-set feeding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/04—Adaptation for subterranean or subaqueous use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/125—Means for positioning
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome

Definitions

  • the present invention relates to a reception antenna intended for receive signals from a geostationary satellite.
  • the invention finds a particularly advantageous application in the field of transmission of television signals, whether intended for individual or collective use.
  • the reflector is composed of a reflector, a source and a frequency converter.
  • the reflector has a paraboloid or portion shape dish. The signals received from the satellite are thus reflected and concentrated in one focal point. This is where the source, accessory intended to guide the waves towards the converter charged with change the frequency.
  • the reception antennas used are essentially of the offset type due to their great compactness. Thanks to its decentralization, the source of this family of satellite dishes does not make any shadow on the surface reflecting the signal, which provides better gain and therefore reduces the dimensions of the antenna.
  • reception antennas Due to their design, these reception antennas are also directly exposed to natural elements such as the sun, the wind, humidity or snow as many factors detrimental to their good operation.
  • the technical problem to be solved by the subject of this invention is to provide a receiving antenna intended to receive signals from a geostationary satellite, including in particular a reflector in the form of a paraboloid capable of reflecting the received signals and concentrate them at a focal point where a source capable of guiding is placed said signals to a frequency converter, receiving antenna which would avoid the problems of the state of the art by being almost insensitive to weather conditions and very easy while offering a more discreet appearance.
  • the solution to the technical problem posed consists, according to this invention, in that the source as well as the reflector are arranged at inside a polyhedral housing, permeable to electromagnetic waves and the underside of which is intended to be placed horizontally when the use of the receiving antenna, the relative positioning of said source and said reflector relative to said underside of the housing integrating from the outset a specific site setting, that is to say that said relative positioning takes into account the elevation angle corresponding to the position of the target satellite.
  • the invention as defined has the advantage of being excessively easy to install since the fact of leveling the housing on a horizontal surface eliminates the need for adjustment elevation. It then suffices simply to orient said housing in the direction azimuth of the satellite to be able to perfectly capture the waves emitted.
  • the housing polyhedral presents an entirely arbitrary aesthetic allowing it to blend easily into the urban landscape. This ability may be still accentuated by the fact that it is possible to cover it with paint, color identical or similar to its direct environment. It also offers effective protection against UV rays from the sun or humidity, plus low wind resistance and the ability to operate perfectly even covered in snow.
  • the frequency converter is also mounted inside the polyhedral housing.
  • the source and the converter are directly coupled together so as not to form a single piece whose compactness induces greater ease of use.
  • the single figure represents a longitudinal section view of a reception antenna according to a particular embodiment of the invention.
  • the housing 1 illustrated in the figure is heptahedral.
  • the two walls side 2 parallel to the cutting plane are identical in shape. All like the rear wall 3, they are positioned orthogonally to the face lower 4, while the front face 5 is inclined outward.
  • the face upper 6 is broken down here into two parts of which the main 7, through which the majority of electromagnetic waves is intended to pass, is not parallel to the lower face 4; this in order to prohibit any deposit of object whose presence could disturb reception, and incidentally allow satisfactory flow of water or melted snow.
  • one of the side walls 2 is provided with a hatch 9 providing access to the interior of the housing 1; this opening concealable being intended for the maintenance of the various internal components of the receiving antenna.
  • a reflector 10 is attached to the rear wall 3, under a part secondary 8 of the upper face 6.
  • the outline of this paraboloid portion resumes here substantially the shape and dimensions of this location of the housing 1, that is to say that it is in the form of a rectangular parallelogram.
  • the reflector 10 can be constituted by a metallized concave element of any kind, such as molded plastic covered with copper or chromium; or just be metallic, like a mirror in aluminum.
  • the source 11 is in turn clipped onto a support 12 positioned in face of the reflector 10. It is directly coupled to the converter 13 for the convenience reasons already mentioned. Its orientation in the plan vertical, as is the position of the reflector relative to the underside 4, is determined as a function of the elevation of the target satellite 15, that is to say of the angle measured in a vertical plane between the horizon and said satellite 15. This inclination varying according to the latitude of the place of sight, the angle of elevation taken into account is an average of the values recorded in the area covered by the signal broadcast. In order to guarantee optimal reception quality in in the case of extremely extensive coverage, it is however possible to predict for the same region minor variations in this value of site; the space considered being divided into several zones, each of which a specific elevation angle is assigned.
  • the housing 1 is mounted perfectly waterproof and may possibly contain means for capture all traces of moisture, such as silica sachets. Of even, it can be equipped with a heating system allowing the case melt the snow, mainly on its upper face 6.
  • the receiving antenna is provided an internal lighting system 14 which, combined with the translucent nature of the material constituting the main part 7 of the upper face 6, provides a double benefit. On the one hand, it brings an undeniable once in motion decorative appeal, and on the other hand, it can form a heat source of likely to cause the same effects as an internal heating system.
  • the translucent face used in this configuration can be made in Plexiglas or Altuglas, materials which are otherwise permeable to waves electromagnetic.
  • the other faces of the housing 1 are made of expanded PVC, that is to say of a material resistant, also permeable to waves and which also offers very good held over time, even exposed to different weather conditions.
  • PVC honeycomb can optionally be used to further increase its resistance, towards hailstones for example.
  • the receiving antenna according to the invention is conventionally usable, that is to say fixed on a vertical support. But she can also, particularly advantageously, be placed directly the ground 16 or be partially buried. In the first case, care will be taken to have a perfectly horizontal surface. In the second, it will suffice to dig a hole 17 in the ground 16 with a volume substantially equal to dimensions of the housing 1 and oriented substantially in the azimuth direction from the target satellite 15, deposit a bed of sand 18 at the bottom and then position horizontally said housing 1 using a level, this time controlling precisely said azimuth direction with a compass.

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  • Aerials With Secondary Devices (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Details Of Aerials (AREA)
  • Radio Relay Systems (AREA)
  • Laminated Bodies (AREA)
  • Table Devices Or Equipment (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

A reception antenna, applicable to the field of television signal transmission, for picking up signals originating from a stationary satellite which has a paraboloid reflector capable of reflecting signals received and concentrating them in a focal point where a source is arranged for guiding the signals towards a frequency converter. The source and the reflector are located inside a polyhedral housing permeable to electromagnetic waves and its lower surface is designed to be placed horizontally when the receiving antenna is being used, the relative positioning of the source and the reflector with respect to the housing lower surface has a predetermined on-site adjustment originally built in. The relative positioning takes into account the elevation angle corresponding to the position of the targeted satellite.

Description

La présente invention concerne une antenne de réception destinée à capter des signaux en provenance d'un satellite géostationnaire.The present invention relates to a reception antenna intended for receive signals from a geostationary satellite.

L'invention trouve une application particulièrement avantageuse dans le domaine de la transmission des signaux de télévision, qu'ils soient destinés à un usage individuel ou collectif.The invention finds a particularly advantageous application in the field of transmission of television signals, whether intended for individual or collective use.

Le développement de la technologie numérique est à l'origine d'une véritable révolution dans le domaine audiovisuel. Outre une restitution inégalée de l'image et du son, la diffusion numérique par satellite procure une véritable interactivité ainsi qu'une très grande souplesse d'utilisation permettant de s'adapter au goût et au rythme de vie de chacun.The development of digital technology is at the origin of a a real revolution in the audiovisual field. Besides a restitution unmatched image and sound, digital satellite broadcasting provides real interactivity as well as great flexibility of use allowing to adapt to the taste and the rhythm of life of each.

Aussi, un nombre de plus en plus important de satellites géostationnaires sont opérationnels pour diffuser des programmes toujours plus nombreux et diversifiés. Avec eux commencent à se généraliser les systèmes de diffusion utilisant plusieurs satellites co-positionnés, c'est-à-dire émettant d'un point unique dans le ciel. C'est notamment le cas du système développé par ASTRA qui, comme ses homologues, présente l'avantage de ne requérir qu'un matériel de réception très simple pour accéder à un très grand nombre de programmes existants ou à venir, à savoir une unique antenne directionnelle fixe.Also, an increasing number of satellites geostationaries are operational to broadcast programs always more numerous and diversified. With them begin to generalize broadcasting systems using several co-positioned satellites, i.e. emitting from a single point in the sky. This is particularly the case with the system developed by ASTRA which, like its counterparts, has the advantage of only require very simple reception equipment to access a very large number of existing or future programs, namely a single fixed directional antenna.

Schématiquement, celle-ci est composée d'un réflecteur, d'une source et d'un convertisseur de fréquences. Afin de la rendre suffisamment directionnelle, le réflecteur présente une forme de paraboloïde ou de portion de paraboloïde. Les signaux reçus du satellite sont ainsi réfléchis et concentrés en un point focal. C'est à cet endroit précis qu'est positionnée la source, accessoire destiné à guider les ondes vers le convertisseur chargé d'en modifier la fréquence.Schematically, it is composed of a reflector, a source and a frequency converter. In order to make it sufficiently directional, the reflector has a paraboloid or portion shape dish. The signals received from the satellite are thus reflected and concentrated in one focal point. This is where the source, accessory intended to guide the waves towards the converter charged with change the frequency.

Les antennes de réception utilisées sont essentiellement de type offset en raison de leur grande compacité. Grâce à son décentrage, la source de cette famille de paraboles ne fait en effet aucune ombre sur la surface réfléchissant le signal, ce qui procure un meilleur gain et par conséquent permet de réduire les dimensions de l'antenne.The reception antennas used are essentially of the offset type due to their great compactness. Thanks to its decentralization, the source of this family of satellite dishes does not make any shadow on the surface reflecting the signal, which provides better gain and therefore reduces the dimensions of the antenna.

Cependant, le succès grandissant de cette technologie numérique dans le grand public se matérialise par une prolifération des antennes paraboliques sur les façades ou les toits des maisons individuelles ou des immeubles collectifs. D'un diamètre de 50 à 80 cm environ, elles sont souvent jugées particulièrement inesthétiques et parfois trop encombrantes lorsque la place est comptée, sur un rebord de fenêtre par exemple.However, the growing success of this digital technology in the general public is materialized by a proliferation of satellite dishes on the facades or roofs of individual houses or buildings collective. With a diameter of approximately 50 to 80 cm, they are often judged particularly unsightly and sometimes too bulky when the place is counted, on a window sill for example.

Par ailleurs, leur installation nécessite l'emploi d'une structure support spécifique et, bien entendu, certaines opérations de réglage plus ou moins complexes afin de positionner précisément la parabole dans les plans horizontaux et verticaux, en fonction de l'azimut et de l'élévation du satellite visé.Furthermore, their installation requires the use of a support structure specific and, of course, some more or less adjustment operations complex in order to precisely position the dish in the planes horizontal and vertical, depending on the azimuth and the satellite elevation referred.

De part leur conception, ces antennes de réception sont également directement exposées aux éléments naturels tels que le soleil, le vent, l'humidité ou la neige autant de facteurs préjudiciables à leur bon fonctionnement.Due to their design, these reception antennas are also directly exposed to natural elements such as the sun, the wind, humidity or snow as many factors detrimental to their good operation.

Aussi, le problème technique à résoudre par l'objet de la présente invention est de proposer une antenne de réception destinée à capter des signaux en provenance d'un satellite géostationnaire, comportant notamment un réflecteur en forme de paraboloïde apte à réfléchir les signaux reçus et à les concentrer en un point focal où est disposée une source apte à guider lesdits signaux vers un convertisseur de fréquences, antenne de réception qui permettrait d'éviter les problèmes de l'état de la technique en étant quasiment insensible aux conditions météorologiques et d'une grande facilité d'installation, tout en offrant une apparence plus discrète.Also, the technical problem to be solved by the subject of this invention is to provide a receiving antenna intended to receive signals from a geostationary satellite, including in particular a reflector in the form of a paraboloid capable of reflecting the received signals and concentrate them at a focal point where a source capable of guiding is placed said signals to a frequency converter, receiving antenna which would avoid the problems of the state of the art by being almost insensitive to weather conditions and very easy while offering a more discreet appearance.

La solution au problème technique posé consiste, selon la présente invention, en ce que la source ainsi que le réflecteur sont disposés à l'intérieur d'un boítier polyédrique, perméable aux ondes électromagnétiques et dont la face inférieure est destinée à être placée horizontalement lors de l'utilisation de l'antenne de réception, le positionnement relatif de ladite source et dudit réflecteur par rapport à ladite face inférieure du boítier intégrant d'origine un réglage en site déterminé, c'est-à-dire que ledit positionnement relatif prend en compte l'angle d'élévation correspondant à la position du satellite visé.The solution to the technical problem posed consists, according to this invention, in that the source as well as the reflector are arranged at inside a polyhedral housing, permeable to electromagnetic waves and the underside of which is intended to be placed horizontally when the use of the receiving antenna, the relative positioning of said source and said reflector relative to said underside of the housing integrating from the outset a specific site setting, that is to say that said relative positioning takes into account the elevation angle corresponding to the position of the target satellite.

L'invention telle qu'ainsi définie présente l'avantage d'être excessivement facile à mettre en place puisque le fait de poser de niveau le boítier sur une surface horizontale permet de s'affranchir du réglage en élévation. Il suffit alors simplement d'orienter ledit boítier dans la direction azimutale du satellite pour pouvoir capter parfaitement les ondes émises.The invention as defined has the advantage of being excessively easy to install since the fact of leveling the housing on a horizontal surface eliminates the need for adjustment elevation. It then suffices simply to orient said housing in the direction azimuth of the satellite to be able to perfectly capture the waves emitted.

Contrairement aux dispositifs de l'état de la technique, le boítier polyédrique présente une esthétique tout à fait quelconque lui permettant de se fondre facilement dans le paysage urbain. Cette capacité peut être encore accentuée par le fait qu'il est possible de le recouvrir de peinture, d'une couleur identique ou similaire à son environnement direct. Il offre de plus une protection efficace contre les U.V. du soleil ou l'humidité, une plus faible prise au vent ainsi que la possibilité de fonctionner parfaitement même recouvert de neige.Unlike the devices of the state of the art, the housing polyhedral presents an entirely arbitrary aesthetic allowing it to blend easily into the urban landscape. This ability may be still accentuated by the fact that it is possible to cover it with paint, color identical or similar to its direct environment. It also offers effective protection against UV rays from the sun or humidity, plus low wind resistance and the ability to operate perfectly even covered in snow.

Selon une particularité de l'invention, le convertisseur de fréquences est également monté à l'intérieur du boítier polyédrique. Dans la pratique en effet, la source et le convertisseur sont directement couplés entre eux pour ne former qu'une seule et unique pièce dont la compacité induit une plus grande facilité d'utilisation.According to a feature of the invention, the frequency converter is also mounted inside the polyhedral housing. In practice in effect, the source and the converter are directly coupled together so as not to form a single piece whose compactness induces greater ease of use.

La description qui va suivre en regard des dessins annexés, donnés à titre d'exemples non limitatifs, fera bien comprendre en quoi consiste l'invention et comment elle peut être réalisée.The description which follows with reference to the appended drawings, given at as nonlimiting examples, will make it clear what is the invention and how it can be realized.

La figure unique représente une vue en coupe longitudinale d'une antenne de réception selon un mode de réalisation particulier de l'invention.The single figure represents a longitudinal section view of a reception antenna according to a particular embodiment of the invention.

Pour des raisons de clarté, seuls les éléments essentiels pour la compréhension de l'invention ont été représentés, et ceci sans respect de l'échelle et de manière schématique.For reasons of clarity, only the essentials for the understanding of the invention have been shown, without regard for scale and schematically.

Le boítier 1 illustré sur la figure est heptaédrique. Les deux parois latérales 2 parallèles au plan de coupe sont de formes identiques. Tout comme la paroi arrière 3, elles sont positionnées orthogonalement à la face inférieure 4, tandis que la face avant 5 est inclinée vers l'extérieur. La face supérieure 6 se décompose ici en deux parties dont la principale 7, à travers laquelle la majorité des ondes électromagnétiques est destinée à passer, n'est pas parallèle à la face inférieure 4 ; ceci afin d'interdire tout dépôt d'objet dont la présence pourrait perturber la réception, et accessoirement de permettre un écoulement satisfaisant de l'eau ou de la neige fondue.The housing 1 illustrated in the figure is heptahedral. The two walls side 2 parallel to the cutting plane are identical in shape. All like the rear wall 3, they are positioned orthogonally to the face lower 4, while the front face 5 is inclined outward. The face upper 6 is broken down here into two parts of which the main 7, through which the majority of electromagnetic waves is intended to pass, is not parallel to the lower face 4; this in order to prohibit any deposit of object whose presence could disturb reception, and incidentally allow satisfactory flow of water or melted snow.

De manière avantageuse, une des parois latérales 2 est pourvue d'une trappe 9 permettant d'accéder à l'intérieur du boítier 1 ; cette ouverture occultable étant destinée à la maintenance des différents composants internes de l'antenne de réception.Advantageously, one of the side walls 2 is provided with a hatch 9 providing access to the interior of the housing 1; this opening concealable being intended for the maintenance of the various internal components of the receiving antenna.

Un réflecteur 10 est adossé à la paroi arrière 3, sous une partie secondaire 8 de la face supérieure 6. Afin de s'intégrer au mieux à l'espace interne disponible, le contour de cette portion de paraboloïde reprend ici sensiblement la forme et les dimensions de cet endroit du boítier 1, c'est-à-dire qu'il se présente sous la forme d'un parallélogramme rectangle. Bien entendu, le réflecteur 10 peut être constitué par un élément concave métallisé de nature quelconque, comme par exemple un plastique moulé recouvert de cuivre ou de chrome ; ou tout simplement être métallique, tel un miroir en aluminium.A reflector 10 is attached to the rear wall 3, under a part secondary 8 of the upper face 6. In order to best integrate into the space internal available, the outline of this paraboloid portion resumes here substantially the shape and dimensions of this location of the housing 1, that is to say that it is in the form of a rectangular parallelogram. Well understood, the reflector 10 can be constituted by a metallized concave element of any kind, such as molded plastic covered with copper or chromium; or just be metallic, like a mirror in aluminum.

La source 11 est quant à elle clippée sur un support 12 positionné en face du réflecteur 10. Elle est directement couplé au convertisseur 13 pour les raisons de commodité déjà mentionnées. Son orientation dans le plan vertical, tout comme la position du réflecteur par rapport à la face inférieure 4, est déterminée en fonction de l'élévation du satellite visé 15, c'est-à-dire de l'angle mesuré dans un plan vertical entre l'horizon et ledit satellite 15. Cette inclinaison variant suivant la latitude du lieu de visée, l'angle d'élévation pris en compte est une moyenne des valeurs relevées dans la zone couverte par la diffusion du signal. Afin de garantir une qualité de réception optimale dans le cas d'une couverture extrêmement étendue, il est cependant possible de prévoir pour une même région des variations mineures de cette valeur du site; l'espace considéré étant divisé en plusieurs zones à chacune desquelles est attribuée un angle d'élévation spécifique. The source 11 is in turn clipped onto a support 12 positioned in face of the reflector 10. It is directly coupled to the converter 13 for the convenience reasons already mentioned. Its orientation in the plan vertical, as is the position of the reflector relative to the underside 4, is determined as a function of the elevation of the target satellite 15, that is to say of the angle measured in a vertical plane between the horizon and said satellite 15. This inclination varying according to the latitude of the place of sight, the angle of elevation taken into account is an average of the values recorded in the area covered by the signal broadcast. In order to guarantee optimal reception quality in in the case of extremely extensive coverage, it is however possible to predict for the same region minor variations in this value of site; the space considered being divided into several zones, each of which a specific elevation angle is assigned.

De manière particulièrement avantageuse, le boítier 1 est monté parfaitement étanche et peut éventuellement renfermer des moyens pour capter toutes traces d'humidité, comme par exemple des sachets de silice. De même, il peut être équipé d'un système de chauffage permettant le cas échéant de faire fondre la neige, essentiellement sur sa face supérieure 6.Particularly advantageously, the housing 1 is mounted perfectly waterproof and may possibly contain means for capture all traces of moisture, such as silica sachets. Of even, it can be equipped with a heating system allowing the case melt the snow, mainly on its upper face 6.

Ainsi qu'on peut le voir sur la figure, l'antenne de réception est pourvu d'un système d'éclairage interne 14 qui, combiné à la nature translucide du matériau constituant la partie principale 7 de la face supérieure 6, offre un double avantage. D'une part, il apporte une fois en marche un indéniable attrait décoratif, et d'autre part, il peut former une source de chaleur de nature à provoquer les mêmes effets qu'un système de chauffage interne. La face translucide utilisée dans cette configuration pourra être réalisée en Plexiglas ou en Altuglas, matières par ailleurs perméables aux ondes électromagnétiques.As can be seen in the figure, the receiving antenna is provided an internal lighting system 14 which, combined with the translucent nature of the material constituting the main part 7 of the upper face 6, provides a double benefit. On the one hand, it brings an undeniable once in motion decorative appeal, and on the other hand, it can form a heat source of likely to cause the same effects as an internal heating system. The translucent face used in this configuration can be made in Plexiglas or Altuglas, materials which are otherwise permeable to waves electromagnetic.

Dans ce mode de réalisation particulier de l'invention, les autres faces du boítier 1 sont réalisées en PVC expansé, c'est-à-dire en un matériau résistant, également perméable aux ondes et qui offre en outre une très bonne tenue dans le temps, même exposé aux différents intempéries. Un PVC alvéolé peut éventuellement être utilisé afin d'augmenter encore sa résistance, vis-à-vis de grêlons par exemple.In this particular embodiment of the invention, the other faces of the housing 1 are made of expanded PVC, that is to say of a material resistant, also permeable to waves and which also offers very good held over time, even exposed to different weather conditions. PVC honeycomb can optionally be used to further increase its resistance, towards hailstones for example.

Dans la pratique, l'antenne de réception conforme à l'invention est utilisable classiquement, c'est-à-dire fixé sur un support vertical. Mais elle peut également, de manière particulièrement avantageuse, être posé à même le sol 16 ou être partiellement enterré. Dans le premier cas, on veillera à avoir une surface parfaitement horizontale. Dans le second, il suffira de creuser dans le sol 16 un trou 17 d'un volume sensiblement égale aux dimensions du boítier 1 et orienté sensiblement suivant la direction azimutale du satellite visé 15, de déposer au fond un lit de sable 18 puis de positionner horizontalement ledit boítier 1 à l'aide d'un niveau, en contrôlant cette fois précisément ladite direction azimutale avec une boussole.In practice, the receiving antenna according to the invention is conventionally usable, that is to say fixed on a vertical support. But she can also, particularly advantageously, be placed directly the ground 16 or be partially buried. In the first case, care will be taken to have a perfectly horizontal surface. In the second, it will suffice to dig a hole 17 in the ground 16 with a volume substantially equal to dimensions of the housing 1 and oriented substantially in the azimuth direction from the target satellite 15, deposit a bed of sand 18 at the bottom and then position horizontally said housing 1 using a level, this time controlling precisely said azimuth direction with a compass.

Claims (10)

  1. Receiving antenna designed to receive signals coming from a geostationary satellite (15), comprising in particular a reflector (10) of paraboloid shape capable of reflecting the received signals and concentrating them at a focal point where an antenna source (11) is positioned, the source (11) being designed to guide the said signals to a frequency converter (13), characterised in that the source (11) and the reflector (10) are housed inside a polyhedral box (1) which is transparent to electromagnetic waves and has a lower surface (4) intended to be positioned horizontally when the receiving antenna is in use, the relative positioning of the said source (11) and the said reflector (10) with respect to the said lower surface (4) of the box (1) incorporating a pre-determined elevation setting i.e. the said relative positioning takes into account an angle of elevation corresponding to the position of the satellite concerned (15).
  2. Receiving antenna according to Claim 1, characterised in that the frequency converter (13) is located inside the polyhedral box (1).
  3. Receiving antenna according to either of Claims 1 and 2, characterised in that at least part of the upper surface (6) of the box (1) lies in a plane secant to the plane formed by the lower surface (4) of the said box (1).
  4. Receiving antenna according to any of Claims 1 to 3, characterised in that the box (1) has a closable aperture (9) to allow for maintenance of the various components inside the box(1).
  5. Receiving antenna according to any of Claims 1 to 4, characterised in that the box (1) is completely waterproof.
  6. Receiving antenna according to any of Claims 1 to 5, characterised in that the box (1) has a means of capturing moisture.
  7. Receiving antenna according to any of Claims 1 to 6, characterised in that the box (1) has a heating system which can remove any snow which may fall on the upper surface (6).
  8. Receiving antenna according to any of Claims 1 to 7, characterised in that the box (1) is at least partly made from PVC.
  9. Receiving antenna according to any of Claims 1 to 8, characterised in that the box (1) has an internal lighting system (14) and in that at least part (7) of the upper surface (6) of the said box (1) is made from a translucent material transparent to electromagnetic waves.
  10. Procedure for installing a receiving antenna according to any of the preceding Claims, characterised in that the procedure includes the following operations:
    digging in the ground (16) a hole (17) of a volume approximately equal to the size of the box (1), the said hole (17) being oriented on the azimuth of the satellite concerned (15)
    depositing a layer of sand (18) at the bottom of the hole (17)
    positioning the box (1) horizontally on the layer of sand (18), accurately verifying the azimuth by means of a compass.
EP97937641A 1996-09-04 1997-08-19 Satellite reception antenna Expired - Lifetime EP0925618B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9610945A FR2753007B1 (en) 1996-09-04 1996-09-04 SATELLITE RECEPTION ANTENNA
FR9610945 1996-09-04
PCT/FR1997/001505 WO1998010486A1 (en) 1996-09-04 1997-08-19 Satellite reception antenna

Publications (2)

Publication Number Publication Date
EP0925618A1 EP0925618A1 (en) 1999-06-30
EP0925618B1 true EP0925618B1 (en) 2002-01-23

Family

ID=9495551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97937641A Expired - Lifetime EP0925618B1 (en) 1996-09-04 1997-08-19 Satellite reception antenna

Country Status (7)

Country Link
US (1) US6208314B1 (en)
EP (1) EP0925618B1 (en)
AT (1) ATE212479T1 (en)
AU (1) AU4019497A (en)
DE (1) DE69710081T2 (en)
FR (1) FR2753007B1 (en)
WO (1) WO1998010486A1 (en)

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FR2783360B1 (en) * 1998-09-11 2000-11-24 Daniel Bureau WAVE RECEIVING DEVICE HAVING A SATELLITE ANTENNA
US6709184B1 (en) 1999-12-20 2004-03-23 Bellsouth Intellectual Property Corp. Apparatus for mounting a receiver mast and associated method
US6753823B2 (en) 2000-12-29 2004-06-22 Bellsouth Intellectual Property Corporation Antenna with integral alignment devices
US6484987B2 (en) 2000-12-29 2002-11-26 Bellsouth Intellectual Property Corporation Mounting bracket
US20020083574A1 (en) 2000-12-29 2002-07-04 Matz William R. Method for aligning an antenna with a satellite
US6486851B2 (en) 2000-12-29 2002-11-26 Bellsouth Intellectual Property Corporation Antenna components and manufacturing method therefor
US6799364B2 (en) 2000-12-29 2004-10-05 Bellsouth Intellectual Property Corporation Antenna aligning methods
US6683581B2 (en) 2000-12-29 2004-01-27 Bellsouth Intellectual Property Corporation Antenna alignment devices
US6507325B2 (en) 2000-12-29 2003-01-14 Bellsouth Intellectual Property Corporation Antenna alignment configuration
US6559806B1 (en) 2000-12-29 2003-05-06 Bellsouth Intellectual Property Corporation Motorized antenna pointing device
US6480161B2 (en) 2000-12-29 2002-11-12 Bellsouth Intellectual Property Corporation Motorized antenna pointing device
US6937188B1 (en) 2001-11-13 2005-08-30 Bellsouth Intellectual Property Corporation Satellite antenna installation tool
EP1956677B1 (en) * 2007-02-08 2010-12-15 SISVEL Technology Srl High integrable flat antenna for satellite video receiving
GB2481016B (en) 2010-06-08 2014-10-29 Michael Cummings Antenna heating apparatus
FR3025946A1 (en) * 2014-09-16 2016-03-18 Tele Equipement SATELLITE RECEPTION ANTENNA

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US3790949A (en) * 1972-12-13 1974-02-05 T Mcgraw Survivable ground antenna system
NO802796L (en) * 1979-09-25 1981-03-26 Siemens Ag DIRECT DIRECT RECEIVING ANTENNA BY SATELITE
JPS60134604A (en) * 1983-12-23 1985-07-17 Mitsubishi Electric Corp Antenna device
US4920350A (en) * 1984-02-17 1990-04-24 Comsat Telesystems, Inc. Satellite tracking antenna system
US4710778A (en) * 1985-08-07 1987-12-01 Radov Mitchell C Satellite earth station
AU603900B2 (en) * 1987-08-06 1990-11-29 W.L. Gore & Associates, Inc. Protective electromagnetically transparent window
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Also Published As

Publication number Publication date
WO1998010486A1 (en) 1998-03-12
FR2753007A1 (en) 1998-03-06
DE69710081T2 (en) 2002-08-22
FR2753007B1 (en) 1998-11-27
DE69710081D1 (en) 2002-03-14
AU4019497A (en) 1998-03-26
ATE212479T1 (en) 2002-02-15
US6208314B1 (en) 2001-03-27
EP0925618A1 (en) 1999-06-30

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