FR2769409A1 - Television satellite signal receiving aerial reflector assembly - Google Patents

Television satellite signal receiving aerial reflector assembly Download PDF

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Publication number
FR2769409A1
FR2769409A1 FR9712565A FR9712565A FR2769409A1 FR 2769409 A1 FR2769409 A1 FR 2769409A1 FR 9712565 A FR9712565 A FR 9712565A FR 9712565 A FR9712565 A FR 9712565A FR 2769409 A1 FR2769409 A1 FR 2769409A1
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France
Prior art keywords
index
parabola
shadow
graduated scale
parabolic reflector
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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.)
Granted
Application number
FR9712565A
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French (fr)
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FR2769409B1 (en
Inventor
Roger Pochet
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Individual
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Individual
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Publication date
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Priority to FR9712565A priority Critical patent/FR2769409B1/en
Publication of FR2769409A1 publication Critical patent/FR2769409A1/en
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Publication of FR2769409B1 publication Critical patent/FR2769409B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation

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  • Aerials With Secondary Devices (AREA)

Abstract

The shadow of the index mark falls on a graduated scale to enable alignment of the satellite dish. The aerial for receiving HF satellite television broadcasts is in the form of a parabolic reflector (11) at the focus of which is the signal receiver (18). The precise orientation of the parabolic reflector is achieved with the aid of an index (12,13) whose shadow cast by the sun is projected on to a graduated scale (14,15) formed on the surface of the parabolic reflector. The detection of the location of the index shadow at specific times in the day provides the possibility of optimum alignment of the aerial for receiving the television programmes transmitted by satellite.

Description

La présente invention se rapporte au domaine de la radioéléctricité, et concerne les dispositifs de. réception des ondes radio-électriques émises notamment dans les transmissions hertzziennes, telles que des messages de télévision, particulièrement entre un émetteur mobile porté par- un satellite artificiel de la
Terre, et un récepteur muni d'une antenne de réception.The present invention relates to the field of radioelectricity, and relates to radio devices. reception of radio waves emitted in particular in radio transmissions, such as television messages, particularly between a mobile transmitter carried by an artificial satellite of the
Earth, and a receiver with a receiving antenna.

Compte tenu des fréquences élevées mises en oeuvre, les ondes radio-électriques se comportent suivant les lois de l'optique, et 1 antenne de réception affecte la forme dun réflecteur métallique concave, ce réflecteur, de surface parabolique, concentrant les ondes en son foyer situé sur son axe. En ce foyer est placé l'or- gane d'entrée d'un circuit de réception, permettant d'exploiter le message reçu vers les appareils d'utilisation (radio-diffusion télévision). Taking into account the high frequencies used, the radio waves behave according to the laws of optics, and 1 receiving antenna has the shape of a concave metal reflector, this reflector, of parabolic surface, concentrating the waves in its focus located on its axis. In this foyer is placed the input organ of a reception circuit, making it possible to exploit the received message towards the devices of use (radio-diffusion television).

Pour la réception d'une émission provenant d'un satellite, il est nécessaire dorienter avec précision vers celui-ci l'axe du réflecteur parabolique, ou "parabole". To receive a broadcast from a satellite, it is necessary to orient the axis of the parabolic reflector, or "parabola", precisely towards the latter.

Pourréaliser l'orientation précise, la parabole est solidaire d'un support orientable, suivant deux axes pivotants, permettant de régler horizontalement (azimut) et verticalement (élévation) son orientation. To achieve the precise orientation, the dish is secured to an orientable support, along two pivoting axes, making it possible to adjust its orientation horizontally (azimuth) and vertically (elevation).

L obtention de l orientation rigoureuse de la parabole vers le satellite à recevoir exige la connaissance préalable3 en azimut et en élévation, de la position de celui-ci par rapport au lieu de réception, variable, de plus, en fonction de l'heure en ce lieu. Obtaining the rigorous orientation of the parabola towards the satellite to receive requires prior knowledge3 in azimuth and in elevation, of its position relative to the place of reception, variable, moreover, according to the time in this location.

En pratique, cette orientation exige I emploi d une boussole, ainsi. qu'un appareil de mesure de l'énergie reçue, ou mesureur de champ, pour affiner l'orientation. Cependant, un tel ensemble d'informations et de moyens est en général hors de portée de l'utilisateur non technicien, et entraîne, en leur absence, pour celui-ci, un ensemble d'opérations aléatoires, longues et incertaines.In practice, this orientation requires the use of a compass, as well. than a device for measuring the energy received, or field meter, to refine the orientation. However, such a set of information and means is generally out of reach of the non-technical user, and entails, in their absence, for the latter, a set of random, long and uncertain operations.

Le dispositif d'orientation d'antenne parabolique faisant l'objet de la présente invention ne comporte aucun de ces inconvénients. Dans son fondement, l'invention fait appel à la lumière du soleil, et exploite la position de l'ombre portée, sur la parabole, d'une tige ou index@ solidaire de celle-ci. The parabolic antenna orientation device which is the subject of the present invention does not have any of these drawbacks. In its foundation, the invention uses sunlight, and exploits the position of the shadow cast, on the parabola, of a rod or index @ secured to it.

Cette ombre est portée sur une échelle graduée solidaire de la parabole, sur laquelle, en fabrication ont été marqués des repères, en fonction du lieu géographique et des différents satel- lites choisis. Compte tenu de la nécessité de réaliser deux réglages distincts en azimut et élévation, l'index est constitué de de parties disposées à angle droit, projetant leur ombre sur une échelle graduée également en deux parties à angle droit. This shadow is carried on a graduated scale secured to the parabola, on which, during manufacture, marks have been marked, depending on the geographic location and the different satellites chosen. Given the need to make two separate adjustments in azimuth and elevation, the index consists of parts arranged at right angles, casting their shadow on a scale also graduated in two parts at right angles.

Plus précisément, l'invention concerne une antenne radioélectrique de réception à réflecteur parabolique ou 'parabole', à orientation réglable, comportant une parabole (il), orientable en azimut et en élévation par deux pivots (16) et (17), caractérisée en ce que le repérage de ladite orientation est réalisé par la coopération d' un index (12) (13), et d'une échelle à graduation (14) (15), l'index et l'échelle étant soliclaires de la parabole, et disposés suivant un arrangement mutuel assumant ledit repérage par la projection de l'ombre de l'index sur l'échelle, SOLS l'action de la lumière du soleil. More specifically, the invention relates to a radio receiving antenna with parabolic reflector or 'parabola', with adjustable orientation, comprising a parabola (ii), orientable in azimuth and in elevation by two pivots (16) and (17), characterized in that the identification of said orientation is achieved by the cooperation of an index (12) (13), and of a graduated scale (14) (15), the index and the scale being soliclaires of the parabola, and arranged in a mutual arrangement assuming said location by the projection of the shadow of the index finger on the scale, SOLS the action of sunlight.

L'invention sera mieux comprise à l'aide de la description ci-après, en s'appuyant sur les figures annexées, ou -- La figure 1 représente une antenne de réception orientable suivant l'art connu. The invention will be better understood with the aid of the description below, based on the appended figures, or - Figure 1 represents a steerable receiving antenna according to the known art.

- La figure 2 représente une antenne de réception orientable suivant l'invention. - Figure 2 shows a steerable receiving antenna according to the invention.

La figure 1 représente schématiquement un dispositif récepteur hert2ien a antenne parabolique. Il 1 se compose de l'antenne parabolique elle-même 1, @ ou ou "parabole", orientable en direction de la source de signaux haute fréquence portée par le satellite. La parabole peut être orientée suivant deux axes verticaux et horizontaux, et des tambours gradués (2) et (3) permettent de retrouver les positions en élévation et en azimuts après les réglages longs et minutieux indiqués plus haut.FIG. 1 schematically represents a radio receiver device with a parabolic antenna. It 1 is composed of the parabolic antenna itself 1, @ or or "parabola", orientable towards the source of high frequency signals carried by the satellite. The dish can be oriented along two vertical and horizontal axes, and graduated drums (2) and (3) allow to find the positions in elevation and azimuth after the long and meticulous adjustments indicated above.

La parabole concentre l'énergie reçue en son foyer, ON un boîtier de réception (4) est placé, et achemine 1 énergie haute-fréquence par la connexion (5) vers les circuits d'utili- sation. Le réglage des tambours est peu lisible, car ils sont placés à l'extérieur, et leurs graduations sont dégradées par les intempéries. The dish concentrates the energy received in its home, ON a receiving box (4) is placed, and routes 1 high-frequency energy through the connection (5) to the user circuits. The setting of the drums is difficult to read, because they are placed outside, and their graduations are degraded by the weather.

La figure 2 représente une antenne de réception à parabole orientable suivant l'invention. FIG. 2 represents a receiving antenna with a orientable parabola according to the invention.

Elle @ comporte la parabole (11), munie de pivots à frottement doux (16) et (17). It @ comprises the parabola (11), provided with pivots with gentle friction (16) and (17).

Le système d'orientation, suivant l'invention, est constitué respectivement d'une tige formant index, en deux parties (12) et (17) perpendiculaires entre elles, et d'une échelle grauée, également en deux parties (14) et (l5)3 solidaire de la parabole. The orientation system according to the invention consists respectively of a rod forming an index, in two parts (12) and (17) perpendicular to each other, and of a grained scale, also in two parts (14) and (15) 3 secured to the parabola.

Suivant une caractéristique fondamentale de l'invention, l'index et l'échelle graduée coopèrent, grâce à l'exploitation du rayonnement solaire, qui porte l'ombre de l'index (12) (13) et la projette, à une heure particulière sur l'échelle graduée (14) (15). According to a fundamental characteristic of the invention, the index and the graduated scale cooperate, thanks to the exploitation of solar radiation, which brings the shadow of the index (12) (13) and projects it at one o'clock. particular on the graduated scale (14) (15).

Four retrouver une orientation, il est possible de marquer un repère, soit en fabrication, soit au premier réglage sur place. La multiplicité des satellites conduit à plusieurs repères, qu'il est immédiat de faire coïncider avec l'ombre de l'index. De tels repères peuvent etre économiquement tracés à la peinture résistant aux intempéries, et leur position peut différer suivant la région de loclisation de l'antenne de réception.To find an orientation, it is possible to mark a benchmark, either in manufacturing or at the first setting on site. The multiplicity of satellites leads to several benchmarks, which it is immediate to make coincide with the shadow of the index. Such marks can be economically traced with weather-resistant paint, and their position may differ depending on the location region of the receiving antenna.

I1 est à noter que l'ensemble de la parabole et de l'inde se présente suivant une disposition proche d'un dispositifs connu sous le nom de "cadran solaire", permettant de connaître l'heure, et que doit être considéré comme faisant partie de l'invention l'emploi de graduations supplémentaires peintes sur l'intérieur de la parabole, fournissant une indication horaire avantageuse pour l'orientation de l'antenne et l'utilisation du récepteur.  I1 it should be noted that the whole of the parabola and the India is presented according to an arrangement close to a device known under the name of "sundial", making it possible to know the hour, and that must be regarded as making part of the invention the use of additional graduations painted on the inside of the dish, providing an advantageous time indication for the orientation of the antenna and the use of the receiver.

Claims (1)

REVENDICATIONS R i. Antenne radio-électrique de réception à réflecteur parabolique ou "parabole" à orientation réglableS comportant une parabole (11), orientable en azimut et en élévation par deux pivots (16) et (17), caractérisée en ce que le repérage de ladite orientation est réalisé par la coopération d'un inde (12) (13), et d'une échelle à graduations (14)(15), l'index et l'échelle étant solidaires de la parabole, et disposés suivant un arrangement mutuel assurant ledit repérage par la projection de l'ombre de l'index sur l'échelle, sous l'action de la lumière du soleil. R i. Radio reception antenna with parabolic reflector or "parabola" with adjustable orientationS comprising a parabola (11), orientable in azimuth and in elevation by two pivots (16) and (17), characterized in that the identification of said orientation is produced by the cooperation of an india (12) (13), and a graduated scale (14) (15), the index and the scale being integral with the parabola, and arranged in a mutual arrangement ensuring said identification by the projection of the shadow of the index finger on the scale, under the action of sunlight. R.2. Antenne suivant la R.1., caractérisée en ce que l'échelle à graduations porte des marques de repérage réalisées en fabrication. R.2. Antenna according to R.1., Characterized in that the graduated scale carries marking marks made in manufacturing. R.3. Antenne suivant la R.1., caractérisée en ce que l'échelle à graduations porte des marques de repérage assurant la, connaissance de l'heure solaire.  R.3. Antenna according to R.1., Characterized in that the graduated scale carries marking marks ensuring, knowledge of the solar time.
FR9712565A 1997-10-03 1997-10-03 TEMPORAL SOLAR INDEXED SATELLITE ANTENNA Expired - Fee Related FR2769409B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9712565A FR2769409B1 (en) 1997-10-03 1997-10-03 TEMPORAL SOLAR INDEXED SATELLITE ANTENNA

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9712565A FR2769409B1 (en) 1997-10-03 1997-10-03 TEMPORAL SOLAR INDEXED SATELLITE ANTENNA

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FR2769409A1 true FR2769409A1 (en) 1999-04-09
FR2769409B1 FR2769409B1 (en) 1999-12-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1151497A1 (en) * 1998-12-08 2001-11-07 T. I. Kwon Method and apparatus for antenna orientation and antenna with the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997206A (en) * 1982-11-26 1984-06-05 General Res Obu Erekutoronitsukusu:Kk Device for determining attaching direction of parabolic antenna

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997206A (en) * 1982-11-26 1984-06-05 General Res Obu Erekutoronitsukusu:Kk Device for determining attaching direction of parabolic antenna

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 213 (E - 269) 28 September 1984 (1984-09-28) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1151497A1 (en) * 1998-12-08 2001-11-07 T. I. Kwon Method and apparatus for antenna orientation and antenna with the same
EP1151497A4 (en) * 1998-12-08 2002-12-04 T I Kwon Method and apparatus for antenna orientation and antenna with the same

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Publication number Publication date
FR2769409B1 (en) 1999-12-24

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