EP0047684A1 - Missile antenna and missile provided with such an antenna - Google Patents

Missile antenna and missile provided with such an antenna Download PDF

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Publication number
EP0047684A1
EP0047684A1 EP81401287A EP81401287A EP0047684A1 EP 0047684 A1 EP0047684 A1 EP 0047684A1 EP 81401287 A EP81401287 A EP 81401287A EP 81401287 A EP81401287 A EP 81401287A EP 0047684 A1 EP0047684 A1 EP 0047684A1
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EP
European Patent Office
Prior art keywords
missile
antenna
slots
waveguide
tip
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.)
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EP81401287A
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German (de)
French (fr)
Inventor
Francois Gautier
Pierre Crochet
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Thales SA
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Thomson CSF SA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/281—Nose antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0012—Radial guide fed arrays

Definitions

  • the present invention relates to a missile antenna; it also relates to the missile on which such an antenna is installed.
  • the present invention aims to overcome this drawback by the use of an antenna arranged in the wall of the radome serving as a tip for the missile, thereby almost completely freeing the interior volume of this tip.
  • the missile antenna comprises a waveguide formed by two equidistant parallel conductive surfaces having an axis of symmetry coinciding with that of the missile, the outer conductive surface of this waveguide being pierced with slots, and the constituent surfaces of the guide having a shape such that they are part of the tip of the missile.
  • the prior art shows different types of antennas for missiles.
  • the most common are made up of one or more rectilinear waveguides pierced with slots distributed in such a way that the radiation pattern has the desired characteristics.
  • These waveguides are generally placed in the radome of the missile so that their axis of symmetry coincides with that of the missile.
  • the invention remedies these drawbacks by using, for this antenna, only the thickness of the missile tip, thus leaving the interior volume of this tip entirely available for the implantation of various devices, such as for example the circuits electronics associated with these antennas.
  • FIG. 1 represents a diagram of a missile point. It has three distinct parts 2, 3, 10.
  • the upper part 3 represents the end of the tip of the missile and because of its size and its tapered shape it is made of a solid material resistant to mechanical and thermal stresses, very important in the case of a missile.
  • the lower part 10 of the tip of the missile which is fixed to the body 1 of the missile can be reduced, and even eliminated if the radioelectric characteristics of the antenna formed by the central part 2 require large dimensions.
  • Figure 3 shows by way of example a sectional view of a missile point shown in Figures 1 and 2.
  • it comprises the two parallel conductive surfaces 6 and 7 having a same axis of symmetry 12 coinciding with the axis of symmetry of the missile and a coaxial supply outlet 9 whose central core ends in a plunger 8; the latter enters the waveguide and thus makes it possible to excite a mode of propagation with symmetry of revolution in the radial waveguide 2 constituted by the two conductive surfaces 6 and 7.
  • the electric field E is is at all times perpendicular to the conductive walls 6 and 7.
  • the wall 7 is pierced with slots 4 (Fig. 2) allowing the radiation of the electromagnetic wave.
  • the material between the conductive surfaces 6 and 7 may be both air and a dielectric material.
  • the latter will have the advantage of reducing the guided wavelength and thus allow a reduction in the distance between the two conductive surfaces 6 and 7.
  • the antenna may consist of two metal surfaces deposited on a substrate dielectric forming the radome proper and the slots are then obtained by etching.
  • the dielectric it can be protected by a varnish, a paint or a plastic skin. This technique allows the kind of producing with low cost antennas that can operate even in the millimeter wave field.
  • the antenna may also be made of metal and the slots will be protected by a plastic skin.
  • This antenna produced according to the teachings of the invention functions like a conventional slot antenna in resonant mode and in non-resonant mode.
  • the rectangular waveguide for example is closed by a short circuit
  • the "shunt" type slots are arranged every ⁇ g / 2 to take account of the direction of the current lines and make them radiate in phase.
  • the slot near the short circuit is located at Ag / 4 of the latter.
  • the direction of the beam is perpendicular to the surface of the antenna.
  • non-resonant mode also called "progressive mode" the guide is traversed by a progressive wave which attenuates as one approaches the end of the guide. This generally consists of a charge which absorbs the remainder of the non-radiated power. In certain cases this absorbent load can be eliminated, the last slots of the guide play the role of a suitable radiating load.
  • This mode of operation is generally used to tilt the beam or modify the shape (cosecant diagram). The inclination of the beam is for example obtained by spacing the slits by a quantity - where 9 is the desired depointing angle relative to the normal of the antenna.
  • the antenna according to the invention has been described as constituting the radome of a missile whose end is pointed, the waveguide which it constitutes then being of conical shape.
  • the antenna according to the invention is just as easily achievable on a machine whose front end has an ogivate or semi-hemispherical shape. It can also be carried out on the cylindrical part of a machine whose diameter would be small with respect to the wavelength, that is to say that the diameter would be a few wavelengths.
  • Figure 4 shows in schematic form such an antenna made on the cylindrical body of a missile, the slots being made along generatrices of the cylinder. This figure does not require a particular description, there are elements quite similar to those of Figure 1 for example.

Abstract

The invention relates to slot antennas. The utilisation of an axially symmetric wave guide consisting of two parallel metal plates (6, 7) one of these plates (7) being drilled with slots, and fed with the aid of an exciting probe (8), permits utilisation of the volume inside the antenna. Application to missiles. <IMAGE>

Description

La présente invention concerne une antenne pour missile ; elle concerne également le missile sur lequel une telle antenne est installée.The present invention relates to a missile antenna; it also relates to the missile on which such an antenna is installed.

Les missiles actuels sont généralement équipés de dispositifs électromagnétiques permettant soit leur guidage soit la commande de mise à feu lorsque la cible est située à une distance inférieure à une distance donnée du missile. Ces dispositifs comportent une antenne dont les dimensions sont non négligeables et cette antenne est généralement disposée dans la pointe du missile interdisant ainsi l'implantation d'éléments divers dans cette partie du missile et occasionnant une perte importante de place.Current missiles are generally equipped with electromagnetic devices allowing either their guidance or the firing control when the target is located at a distance less than a given distance from the missile. These devices include an antenna whose dimensions are not negligible and this antenna is generally placed in the tip of the missile thus preventing the implantation of various elements in this part of the missile and causing a significant loss of space.

La présente invention vise à pallier cet inconvénient par l'utilisation d'une antenne disposée dans la paroi du radome servant de pointe au missile, libérant de ce fait presque complètement le volume intérieur de cette pointe.The present invention aims to overcome this drawback by the use of an antenna arranged in the wall of the radome serving as a tip for the missile, thereby almost completely freeing the interior volume of this tip.

Selon une caractéristique de l'invention, l'antenne pour missile comporte un guide d'onde formé par deux surfaces conductrices parallèles équidistantes possédant un axe de symétrie coincidant avec celui du missile, la surface conductrice extérieure de ce guide d'onde étant percée de fentes, et les surfaces constitutives du guide ayant une forme telle qu'elles sont partie de la pointe du missile.According to a characteristic of the invention, the missile antenna comprises a waveguide formed by two equidistant parallel conductive surfaces having an axis of symmetry coinciding with that of the missile, the outer conductive surface of this waveguide being pierced with slots, and the constituent surfaces of the guide having a shape such that they are part of the tip of the missile.

D'autres avantages et caractéristiques de l'invention apparaîtront dans la description qui suit, illustrée à l'aide des figures qui représentent :

  • - la figure 1, l'emplacement de l'antenne selon l'invention sur la pointe du missile,
  • - la figure 2, un exemple de disposition des fentes rayonnantes sur la surface extérieure de l'antenne selon l'invention, f
  • - la figure 3, un schéma montrant une vue en coupe de l'antenne selon l'invention montée dans la pointe d'un missile et,
  • - la figure 4 une antenne selon l'invention réalisée sur le corps cylindrique d'un missile.
Other advantages and characteristics of the invention will appear in the description which follows, illustrated with the aid of the figures which represent:
  • FIG. 1, the location of the antenna according to the invention on the tip of the missile,
  • - Figure 2, an example of arrangement of the radiating slots on the outer surface of the antenna according to the invention, f
  • FIG. 3, a diagram showing a sectional view of the antenna according to the invention mounted in the tip of a missile and,
  • - Figure 4 an antenna according to the invention produced on the body cylindrical of a missile.

L'art antérieur présente différents types d'antennes pour les missiles. Les plus courantes sont constituées d'un ou de plusieurs guides d'ondes rectilignes percés de fentes réparties de telle façon que le diagramme de rayonnement présente les caractéristiques souhaitées. Ces guides d'ondes sont généralement placés dans le radome du missile de façon que leur axe de symétrie coincide avec celui du missile. Les dimensions importantes de ces antennes à guides d'ondes et plus particulièrement leur longueur, interdisent l'implantation d'autres dispositifs dans la pointe du missile.The prior art shows different types of antennas for missiles. The most common are made up of one or more rectilinear waveguides pierced with slots distributed in such a way that the radiation pattern has the desired characteristics. These waveguides are generally placed in the radome of the missile so that their axis of symmetry coincides with that of the missile. The large dimensions of these waveguide antennas and more particularly their length, prohibit the implantation of other devices in the tip of the missile.

L'invention remédie à ces inconvénients en n'utilisant, pour cette antenne, que l'épaisseur de la pointe du missile, laissant ainsi entièrement disponible le volume intérieur de cette pointe pour l'implantation de dispositifs divers, tel que par exemple les circuits électroniques associés à ces antennes.The invention remedies these drawbacks by using, for this antenna, only the thickness of the missile tip, thus leaving the interior volume of this tip entirely available for the implantation of various devices, such as for example the circuits electronics associated with these antennas.

La figure 1 représente un schéma d'une pointe de missile. Elle comporte trois parties 2, 3, 10 distinctes. La partie supérieure 3 représente l'extrémité de la pointe du missile et du fait de sa taille et de sa forme effilée elle est constituée d'un matériau massif résistant aux contraintes mécaniques et thermiques, très importantes dans le cas d'un missile. La partie inférieure 10 de la pointe du missile qui est fixée sur le corps 1 du missile peut être réduite, et même supprimée si les caractéristiques radioélectriques de l'antenne constituée par la partie centale 2 nécessitent des dimensions importantes.FIG. 1 represents a diagram of a missile point. It has three distinct parts 2, 3, 10. The upper part 3 represents the end of the tip of the missile and because of its size and its tapered shape it is made of a solid material resistant to mechanical and thermal stresses, very important in the case of a missile. The lower part 10 of the tip of the missile which is fixed to the body 1 of the missile can be reduced, and even eliminated if the radioelectric characteristics of the antenna formed by the central part 2 require large dimensions.

La figure 2 représente un schéma de la surface de l'antenne 2 suivant l'invention dans le cas particulier d'une pointe de missile de forme conique. Sur cette figure, les fentes rayonnantes 4 sont disposées selon des génératrices 5 du cone 2 constituant le guide d'onde suivant ainsi les lignes de courant générées par l'excitation de ce guide d'onde. Ces fentes n'ont pas une forme particulière imposée. Elles peuvent être rectangulaires, oblongues, en haltère, ellipsoïdales également, et dans la pratique, elles présentent les mêmes caractéristiques que celles utilisées dans les guides d'ondes rectangulaires :

  • La conductance est d'autant plus forte que l'inclinaison des fentes est grande par rapport aux génératrices du cône, le maximum étant obtenu pour une inclinaison de 90° et le minimum pour une inclinaison de 0°.
  • - La résonance des fentes sera obtenue en ajustant leur longueur d'environ une demi-longueur d'onde corrigée des effets de bord et du couplage entre fentes et, si le guide est rempli de diélectrique, de la présence de ce diélectrique.
  • - La sélectivité sera obtenue en réglant la largeur des fentes qui est de quelques dizièmes de la longueur d'onde.
  • - Pour obtenir un rayonnement en phase de toutes les fentes, celles-ci seront inclinées dans un même sens par rapport aux lignes de courant, cette inclinaison peut être positive ou négative.
  • - Le diagramme de rayonnement suivant l'axe de l'engin sera obtenu en choisissant la répartition d'amplitude en jouant sur l'inclinaison des fentes.
  • - Le diagramme de rayonnement en roulis pourra être choisi parfaitement de révolution autour de l'axe de l'engin. Pour cela, il suffira de disposer sur la surface extérieure du cône un réseau de fentes espacées d'environ 0,7 longueur d'onde pour éviter les lobes de réseaux.
  • - Pour obtenir une loi de phase donnée pour le rayonnement des fentes, il est possible de faire varier la phase en modifiant correctement les distancces entre deux fentes consécutives.
2 shows a diagram of the surface of the antenna 2 according to the invention in the particular case of a missile tip of conical shape. In this figure, the radiating slots 4 are arranged along generatrices 5 of the cone 2 constituting the waveguide thus following the current lines generated by the excitation of this waveguide. These slots do not have a particular shape imposed. They can be rectangular, oblong, dumbbell, ellipsoidal also, and in practice, they have the same characteristics as those used in the waveguides rectangular:
  • The conductance is all the stronger as the inclination of the slots is large relative to the generatrices of the cone, the maximum being obtained for an inclination of 90 ° and the minimum for an inclination of 0 °.
  • - The resonance of the slits will be obtained by adjusting their length by about half a wavelength corrected for edge effects and the coupling between slits and, if the guide is filled with dielectric, the presence of this dielectric.
  • - Selectivity will be obtained by adjusting the width of the slits which is a few tenths of the wavelength.
  • - To obtain phase radiation from all the slits, these will be inclined in the same direction relative to the current lines, this inclination can be positive or negative.
  • - The radiation diagram along the axis of the machine will be obtained by choosing the amplitude distribution by playing on the inclination of the slots.
  • - The roll radiation pattern can be chosen to be perfectly rotational around the axis of the machine. For this, it will suffice to have on the outer surface of the cone a network of slots spaced about 0.7 wavelength to avoid the lobes of networks.
  • - To obtain a given phase law for the radiation of the slits, it is possible to vary the phase by correctly modifying the distances between two consecutive slits.

La figure 3 montre à titre d'exemple une vue en coupe d'une pointe de missile représentée aux figures 1 et 2. Outre les éléments déjà décrits, elle comporte les deux surfaces conductrices parallèles 6 et 7 présentant un même axe de symétrie 12 coincidant avec l'axe de symétrie du missile et une prise coaxiale d'alimentation 9 dont l'âme centrale se termine par un plongeur 8 ; celui-ci pénètre dans le guide d'onde et permet ainsi d'exciter un mode de propagation à symétrie de révolution dans le guide d'onde radial 2 constitué par les deux surfaces conductrices 6 et 7. Ainsi le champ électrique E se trouve à tout moment perpendiculaire aux parois conductrices 6 et 7. La paroi 7 est percée de fentes 4 (Fig. 2) permettant le rayonnement de l'onde électromagnétique. Le matériau compris entre les surfaces conductrices 6 et 7 pourra être aussi bien de l'air qu'une matière diélectrique. Cette dernière aura l'avantage de réduire la longueur d'onde guidée et ainsi de permettre une réduction de la distance entre les deux surfaces conductrices 6 et 7. Ainsi, par exemple l'antenne pourra être constituée de deux surfaces métalliques déposées sur un substrat diélectrique formant le radome proprement dit et les fentes sont alors obtenues par gravure. Quant au diélectrique il peut être protégé par un vernis, une peinture ou une peau plastique. Cette technique permet de la sorte de réaliser avec un faible coût des antennes pouvant fonctionner même dans le domaine des ondes millimétriques. L'antenne pourra également être constituée en métal et les fentes seront protégées par une peau en plastique.Figure 3 shows by way of example a sectional view of a missile point shown in Figures 1 and 2. In addition to the elements already described, it comprises the two parallel conductive surfaces 6 and 7 having a same axis of symmetry 12 coinciding with the axis of symmetry of the missile and a coaxial supply outlet 9 whose central core ends in a plunger 8; the latter enters the waveguide and thus makes it possible to excite a mode of propagation with symmetry of revolution in the radial waveguide 2 constituted by the two conductive surfaces 6 and 7. Thus the electric field E is is at all times perpendicular to the conductive walls 6 and 7. The wall 7 is pierced with slots 4 (Fig. 2) allowing the radiation of the electromagnetic wave. The material between the conductive surfaces 6 and 7 may be both air and a dielectric material. The latter will have the advantage of reducing the guided wavelength and thus allow a reduction in the distance between the two conductive surfaces 6 and 7. Thus, for example the antenna may consist of two metal surfaces deposited on a substrate dielectric forming the radome proper and the slots are then obtained by etching. As for the dielectric, it can be protected by a varnish, a paint or a plastic skin. This technique allows the kind of producing with low cost antennas that can operate even in the millimeter wave field. The antenna may also be made of metal and the slots will be protected by a plastic skin.

Cette antenne réalisée suivant les enseignements de l'invention fonctionne comme une antenne à fentes classique en mode résonnant et en mode non résonnant.This antenna produced according to the teachings of the invention functions like a conventional slot antenna in resonant mode and in non-resonant mode.

En mode résonnant, une onde de mode TE 01 se propageant, le guide d'onde de forme rectangulaire par exemple est fermé par un court circuit, les fentes de type "shunt" sont disposées toutes les λg/2 pour tenir compte du sens des lignes de courant et les faire rayonner en phase. La fente proche du court-circuit est située à Ag/4 de ce dernier.In resonant mode, a TE 01 mode wave propagating, the rectangular waveguide for example is closed by a short circuit, the "shunt" type slots are arranged every λg / 2 to take account of the direction of the current lines and make them radiate in phase. The slot near the short circuit is located at Ag / 4 of the latter.

La direction du faisceau est perpendiculaire à la surface de l'antenne.The direction of the beam is perpendicular to the surface of the antenna.

En mode non résonnant encore appelé "mode progressif" le guide est parcouru par une onde progressive qui s'atténue à mesure qu'on s'approche de l'extrémité du guide. Celle-ci est généralement constituée par une charge qui absorbe le reliquat de puissance non rayonnée. Dans certains cas cette charge absorbante peut être supprimée, les dernières fentes du guide jouent le rôle d'une charge rayonnante adaptée. Ce mode de fonctionnement est généralement utilisé pour incliner le faisceau ou modifier la forme (diagramme en cosécante). L'inclinaison du faisceau est par exemple obtenue en espaçant les fentes d'une quantité

Figure imgb0001
- où 9 est l'angle de dépointage désiré par rapport à la normale de l'antenne.In non-resonant mode also called "progressive mode" the guide is traversed by a progressive wave which attenuates as one approaches the end of the guide. This generally consists of a charge which absorbs the remainder of the non-radiated power. In certain cases this absorbent load can be eliminated, the last slots of the guide play the role of a suitable radiating load. This mode of operation is generally used to tilt the beam or modify the shape (cosecant diagram). The inclination of the beam is for example obtained by spacing the slits by a quantity
Figure imgb0001
 - where 9 is the desired depointing angle relative to the normal of the antenna.

Dans ce qui précéde, on a décrit l'antenne suivant l'invention comme constituant le radome d'un missile dont l'extrémité est en pointe, le guide d'onde qu'elle constitue étant alors de forme conique.In the foregoing, the antenna according to the invention has been described as constituting the radome of a missile whose end is pointed, the waveguide which it constitutes then being of conical shape.

L'antenne selon l'invention est tout aussi bien réalisable sur un engin dont l'extrémité avant a une forme ogivate ou semi-hémisphérique. Elle est également réalisable sur la partie cylindrique d'un engin dont le diamètre serait faible vis à vis de la longueur d'onde c'est à dire que le diamètre serait de quelques longueurs d'onde. La figure 4 représente sous une forme schématique une telle antenne réalisée sur le corps cylindrique d'un missile, les fentes étant faites le long de génératrices du cylindre. Cette figure ne nécessite pas une description particulière, on y retrouve des éléments tout à fait semblables à ceux de la figure 1 par exemple.The antenna according to the invention is just as easily achievable on a machine whose front end has an ogivate or semi-hemispherical shape. It can also be carried out on the cylindrical part of a machine whose diameter would be small with respect to the wavelength, that is to say that the diameter would be a few wavelengths. Figure 4 shows in schematic form such an antenna made on the cylindrical body of a missile, the slots being made along generatrices of the cylinder. This figure does not require a particular description, there are elements quite similar to those of Figure 1 for example.

On a ainsi décrit une antenne pour missile, et un missile la comportant.We have thus described an antenna for a missile, and a missile comprising it.

Claims (10)

1. Antenne pour missile constituée par un ou plusieurs guides d'onde à fentes placés dans le radome du missile, caractérisée en ce qu'elle comporte un guide d'onde (2) formé par deux surface conductrices parallèle (6,7) équidistantes possèdant un axe de symétrie (12) coincidant avec celui du missile, la surface conductrice extérieure (7) de ce guide d'onde étant de plus percée de fentes (4), et les surfaces constitutives du guide ayant une forme telle qu'elles sont partie du corps du missile.1. Antenna for missile constituted by one or more waveguides with slits placed in the radome of the missile, characterized in that it comprises a waveguide (2) formed by two equidistant parallel conductive surfaces (6,7) having an axis of symmetry (12) coinciding with that of the missile, the outer conductive surface (7) of this waveguide also being pierced with slots (4), and the constituent surfaces of the guide having a shape such that they are part of the missile body. 2. Antenne pour missile suivant la revendication 1, caractérisée en ce que les surfaces constitutives (6, 7) du guide sont partie de la pointe du missile.2. Antenna for missile according to claim 1, characterized in that the constituent surfaces (6, 7) of the guide are part of the tip of the missile. 3. Antenne pour missile suivant la revendication 1, caractérisée en ce que les surfaces constitutives (6, 7) du guide sont partie du corps cylindrique du missile.3. Antenna for missile according to claim 1, characterized in that the constituent surfaces (6, 7) of the guide are part of the cylindrical body of the missile. 4. Antenne pour missile selon la revendication 1, caractérisée en ce que le guide d'onde (2) est alimenté en un point correspondant à l'intersection de ce guide d'onde (2) avec l'axe de symétrie (12) du missile.4. Antenna for missile according to claim 1, characterized in that the waveguide (2) is supplied at a point corresponding to the intersection of this waveguide (2) with the axis of symmetry (12) missile. 5. Antenne pour missile selon la revendication 4, caractérisée en ce que l'alimentation comporte une fiche coaxiale (9) dont l'âme centrale se termine par un plongeur (8) situé dans le guide d'onde.5. Antenna for missile according to claim 4, characterized in that the supply comprises a coaxial plug (9) whose central core terminates in a plunger (8) located in the waveguide. 6. Antenne pour missile selon la revendication 1, caractérisée en ce que les fentes (4) sont situées sur des lignes (5) appartenant à des plans comprenant l'axe de symétrie (12) du missile.6. Antenna for missile according to claim 1, characterized in that the slots (4) are located on lines (5) belonging to planes comprising the axis of symmetry (12) of the missile. 7. Antenne pour missile selon la revendication 1, caractérisée en ce que les fentes (4) forment un réseau rayonnant.7. Antenna for missile according to claim 1, characterized in that the slots (4) form a radiating network. 8. Antenne pour missile selon la revendication 4, caractérisée en ce que les fentes (4) situées sur une, même ligne (5) sont équidistantes et alimentées en phase.8. Antenna for missile according to claim 4, characterized in that the slots (4) located on a same line (5) are equidistant and supplied in phase. 9. Antenne pour missile selon la revendication 1, caractérisée en ce que les surfaces conductrices (6, 7) sont disposées de part et d'autre d'une matière diélectrique formant la pointe ou le corps cylindrique du missile.9. missile antenna according to claim 1, characterized in that the conductive surfaces (6, 7) are arranged on the side and on the other, a dielectric material forming the tip or the cylindrical body of the missile. 10. Missile, caractérisé en ce qu'il comporte une antenne selon l'une quelconque des revendications précédentes.10. Missile, characterized in that it comprises an antenna according to any one of the preceding claims.
EP81401287A 1980-09-05 1981-08-11 Missile antenna and missile provided with such an antenna Withdrawn EP0047684A1 (en)

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FR8019257A FR2490024B1 (en) 1980-09-05 1980-09-05 MISSILE AND MISSILE ANTENNA COMPRISING SUCH ANTENNA
FR8019257 1980-09-05

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250082A2 (en) * 1986-05-12 1987-12-23 British Aerospace Public Limited Company Vehicleincluding a radar antenna
EP0492010A1 (en) * 1989-11-29 1992-07-01 Ail Systems, Inc. Frequency independent circular array
EP0512487A1 (en) * 1991-05-06 1992-11-11 Alcatel Espace Antenna with shaped lobe and high gain
WO1999043046A1 (en) * 1998-02-18 1999-08-26 Ems Technologies, Inc. Geodesic slotted cylindrical antenna

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US3346865A (en) * 1964-12-10 1967-10-10 Jr Howard S Jones Slot antenna built into a dielectric radome

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US3308467A (en) * 1951-03-28 1967-03-07 Jr Robert F Morrison Waveguide antenna with non-resonant slots
US3074063A (en) * 1954-03-05 1963-01-15 Claude W Horton Missile mounted circular slot antenna
US2981949A (en) * 1956-09-04 1961-04-25 Hughes Aircraft Co Flush-mounted plural waveguide slot antenna
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US3032762A (en) * 1959-01-02 1962-05-01 John L Kerr Circularly arrayed slot antenna
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US3172113A (en) * 1962-06-06 1965-03-02 Whilden G Heinard Curved antenna with variably spaced slots
US3346865A (en) * 1964-12-10 1967-10-10 Jr Howard S Jones Slot antenna built into a dielectric radome

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250082A2 (en) * 1986-05-12 1987-12-23 British Aerospace Public Limited Company Vehicleincluding a radar antenna
EP0250082A3 (en) * 1986-05-12 1990-03-14 British Aerospace Public Limited Company Vehicleincluding a radar antenna
EP0492010A1 (en) * 1989-11-29 1992-07-01 Ail Systems, Inc. Frequency independent circular array
EP0512487A1 (en) * 1991-05-06 1992-11-11 Alcatel Espace Antenna with shaped lobe and high gain
FR2676310A1 (en) * 1991-05-06 1992-11-13 Alcatel Espace LOBE ANTENNA SHAPED AND GREAT GAIN.
WO1999043046A1 (en) * 1998-02-18 1999-08-26 Ems Technologies, Inc. Geodesic slotted cylindrical antenna
US6011520A (en) * 1998-02-18 2000-01-04 Ems Technologies, Inc. Geodesic slotted cylindrical antenna

Also Published As

Publication number Publication date
FR2490024A1 (en) 1982-03-12
FR2490024B1 (en) 1985-06-07

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