EP0439970A1 - Slotted wave guide radiator with non-inclined slots excited by conductive printed patterns - Google Patents

Slotted wave guide radiator with non-inclined slots excited by conductive printed patterns Download PDF

Info

Publication number
EP0439970A1
EP0439970A1 EP90403194A EP90403194A EP0439970A1 EP 0439970 A1 EP0439970 A1 EP 0439970A1 EP 90403194 A EP90403194 A EP 90403194A EP 90403194 A EP90403194 A EP 90403194A EP 0439970 A1 EP0439970 A1 EP 0439970A1
Authority
EP
European Patent Office
Prior art keywords
guide
slots
pattern
slot
radiating
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.)
Granted
Application number
EP90403194A
Other languages
German (de)
French (fr)
Other versions
EP0439970B1 (en
Inventor
Daniel Caer
Jean Le Foll
Joseph Roger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0439970A1 publication Critical patent/EP0439970A1/en
Application granted granted Critical
Publication of EP0439970B1 publication Critical patent/EP0439970B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0037—Particular feeding systems linear waveguide fed arrays
    • H01Q21/0043—Slotted waveguides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas

Definitions

  • the present invention relates to a guide with non-inclined radiating slots excited by radiating pattern of the type comprising slots perpendicular to the axis of the guide, cut out on a short side of the guide with a spacing substantially equal to half a length of operating wave in the guide.
  • Slotted guides are frequently used as linear arrays of radiating sources in array antennas, for example in radar. Their advantages are low cost and low losses. To obtain a radiation close to normal to the guide and a good adaptation, it is necessary on the one hand a distance between successive slits close to ⁇ g / 2, where ⁇ g is the wavelength in the guide, and on the other hand a additional phase shift of ⁇ between two consecutive slots.
  • slots arranged on the long side of a rectangular section guide or on the short side have several drawbacks and in particular a large pitch between successive guides, which limits the scanning angle of the beam in a plane perpendicular to the guides. We therefore prefer to use slots on the short side of the guides.
  • a first solution therefore consists in tilting the slots alternately on one side and on the other to obtain the necessary conditions specified above.
  • this solution to the drawback due to the inclination of the slits, of radiating a cross-polarized component which can reach levels incompatible with proper operation of the antenna using these guides.
  • Another known solution then consists in using non-inclined slots (perpendicular to the axis of the guide) and in exciting them by means of an obstacle placed in the guide (iris, rods).
  • US patent US 4,435,715 (Hughes Aircraft) describes a guide with non-inclined slits in which the excitation of a slit is obtained by placing conductive rods on either side of the slit. Each rod is arranged between an edge of the slot and one of the long sides of the guide.
  • a solution has the drawback of being costly to produce. Indeed, it is necessary to individually fix the rods inside the guide, for example by welding in a bath.
  • the subject of the invention is a guide with slits which remedies these drawbacks by using flat radiating conductive patterns (called “patches” in the English literature) to excite each slit.
  • a guide with non-inclined radiating slots excited by radiating pattern of the type comprising slots perpendicular to the axis of the guide cut out on a small side of the guide with a spacing substantially equal to half a length d operating wave in the guide, characterized in that each slot is excited by means of a radiating pattern arranged in the guide near the slot, parallel to said short side, and serving as an antenna for coupling with the energy propagating in the guide, said pattern transmitting the energy captured to said associated slot via a transmission line connected to said pattern.
  • Figures 1 and 2 show a waveguide 1 comprising, cut on the short side, radiating slots 2, 3 not inclined, that is to say perpendicular to the axis of the guide. As already mentioned, such slots are normally not coupled to the energy propagating in the guide 1 and therefore do not radiate.
  • the radiating patterns 5, 7 serve as a coupling antenna with the electromagnetic energy propagating in the guide 1; the energy taken up by a pattern 5, 7 feeds the line 6, 8 which is connected to it and the latter comes to excite the associated slot 2, 3 which then radiates the energy which is thus transmitted to it.
  • the radiating patterns 5, 7 and the lines 6, 8 are produced according to the technique of printed circuits on the face of the wafer 4 which is not in contact with the short side carrying the slots.
  • This short side serves as a ground plane for the radiating patterns 5, 7 and for the microstrip lines 6, 8.
  • the plate 4 is fixed against the short side for example by gluing.
  • the radiating patterns are not placed in front of the slots so as not to disturb the behavior of the latter and the radiation they provide.
  • the microstrip lines 6, 8 sse extend by a length substantially equal to ⁇ g / 4 beyond the associated slot, which substantially reduces a short circuit at the level of the slot.
  • the slots are spaced approximately ⁇ g / 2 apart and it is necessary to provide an additional phase shift of ⁇ between two consecutive slots.
  • This phase shift is obtained by taking the energy alternately from one side and the other of the corresponding pattern and, consequently, by exciting the slots 2, 3 alternately at one end 2 ′ and at the other 3 ⁇ ( Figure 2 ).
  • the slot following the slot 3 would thus be excited at its end situated on the side of the end 2 ′.
  • the value of the coupling of the radiating pattern with the wave propagated in the guide can be adjusted by the diameter of the pattern (or its dimensions in the case of shapes other than circular).
  • Another way of adjusting the coupling coefficient of the slit is to modify the position of the connection point of the microstrip line on the pattern. Indeed, the coupling is theoretically zero for a point located in the median plane of the guide and increases to a maximum when the connection point moves away towards the points located in the median plane of the pattern parallel to the slots, this is that is to say moves away towards the long sides of the guide.
  • FIG. 3 represents a variant in which the holding in position of the plate 4 is obtained by giving the latter a width slightly greater than the internal width of the short side carrying the slots.
  • two grooves 40, 41 are provided in the long sides of the guide 1, adjacent to the short side carrying the slots. The plate 4 is then slid into the grooves 40, 41 where it is thus held in position. Any fixing and any stop allows correct centering of the pattern-line microstrip assemblies on the associated slots.
  • Figure 4 similar to Figure 2, shows another alternative embodiment in which the microstrip line 6 ′, 8 ′ is electrically connected to a longitudinal edge of the slot 2, 3. This can be achieved for example via a metallized hole 6 monll, 8 ⁇ through the dielectric plate. In this case, the microstrip line does not need to extend beyond the metallized hole.

Landscapes

  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The device relates to a guide with non-inclined radiating slots, excited by a radiating pattern. <??>In a waveguide (1) containing slots (2, 3) which are perpendicular to the axis of the guide and cut out from a small side of the guide, there are arranged a printed circuit board (4) carrying radiating patterns (5, 7) for coupling with the energy propagating in the guide and microstrip lines (6, 8) connected to the patterns in order to excite the slots (2, 3) with the energy thus extracted. <??>The device applies to slotted guides, in particular of array antennas. <IMAGE>

Description

La présente invention se rapporte à un guide à fentes rayonnantes non inclinées à excitation par motif rayonnant du type comportant des fentes perpendiculaires à l'axe du guide, découpées sur un petit côté du guide avec un espacement sensiblement égal à une demi-longueur d'onde de fonctionnement dans le guide.The present invention relates to a guide with non-inclined radiating slots excited by radiating pattern of the type comprising slots perpendicular to the axis of the guide, cut out on a short side of the guide with a spacing substantially equal to half a length of operating wave in the guide.

Les guides à fentes sont fréquemment utilisés comme réseaux linéaires de sources rayonnantes dans des antennes réseaux, par exemple en radar. Ils ont pour avantages un faible coût et des pertes faibles. Pour obtenir un rayonnement voisin de la normale au guide et une bonne adaptation, il faut d'une part une distance entre fentes successives voisine de λg/2, où λg est la longueur d'onde dans le guide, et d'autre part un déphasage supplémentaire de ¶ entre deux fentes consécutives.Slotted guides are frequently used as linear arrays of radiating sources in array antennas, for example in radar. Their advantages are low cost and low losses. To obtain a radiation close to normal to the guide and a good adaptation, it is necessary on the one hand a distance between successive slits close to λg / 2, where λg is the wavelength in the guide, and on the other hand a additional phase shift of ¶ between two consecutive slots.

On peut remplir ces conditions avec des fentes disposées sur le grand côté d'un guide de section rectangulaire ou sur le petit côté. Les fentes sur le grand côté ont plusieurs inconvénients et notamment un pas important entre guides successifs, ce qui limite l'angle de balayage du faisceau dans un plan perpendiculaire aux guides. On préfère donc utiliser des fentes sur le petit côté des guides.These conditions can be fulfilled with slots arranged on the long side of a rectangular section guide or on the short side. The slots on the long side have several drawbacks and in particular a large pitch between successive guides, which limits the scanning angle of the beam in a plane perpendicular to the guides. We therefore prefer to use slots on the short side of the guides.

Si les fentes sont perpendiculaires à l'axe du guide, il n'y a pas couplage d'énergie entre les fentes et le guide et le rayonnement est nul.If the slots are perpendicular to the axis of the guide, there is no energy coupling between the slots and the guide and the radiation is zero.

Une première solution consiste donc à incliner les fentes alternativement d'un côté et de l'autre pour obtenir les conditions nécessaires spécifiées précédemment. Cependant cette solution à l'inconvénient, du fait de l'inclinaison des fentes, de rayonner une composante en polarisation croisée qui peut atteindre des niveaux incompatibles avec un bon fonctionnement de l'antenne utilisant ces guides.A first solution therefore consists in tilting the slots alternately on one side and on the other to obtain the necessary conditions specified above. However, this solution to the drawback, due to the inclination of the slits, of radiating a cross-polarized component which can reach levels incompatible with proper operation of the antenna using these guides.

Une autre solution connue consiste alors à utiliser des fentes non inclinées (perpendiculaires à l'axe du guide) et à les exciter au moyen d'un obstacle disposé dans le guide (iris, tiges).Another known solution then consists in using non-inclined slots (perpendicular to the axis of the guide) and in exciting them by means of an obstacle placed in the guide (iris, rods).

En particulier, le brevet américain US 4 435 715 (Hughes Aircraft) décrit un guide à fentes non inclinées dans lequel l'excitation d'une fente est obtenu en disposant des tiges conductrices de part et d'autre de la fente. Chaque tige est disposée entre un bord de la fente et un des grands côtés du guide. Cependant une telle solution a l'inconvénient d'être coûteuse à réaliser. En effet, il est nécessaire de fixer individuellement les tiges à l'intérieur du guide, par exemple par soudure au bain.In particular, US patent US 4,435,715 (Hughes Aircraft) describes a guide with non-inclined slits in which the excitation of a slit is obtained by placing conductive rods on either side of the slit. Each rod is arranged between an edge of the slot and one of the long sides of the guide. However, such a solution has the drawback of being costly to produce. Indeed, it is necessary to individually fix the rods inside the guide, for example by welding in a bath.

L'invention a pour objet un guide à fentes remédiant à ces inconvénients grâce à l'utilisation de motifs conducteurs rayonnants plats (appelés "patch" dans la littérature anglo-saxonne) pour exciter chaque fente.The subject of the invention is a guide with slits which remedies these drawbacks by using flat radiating conductive patterns (called "patches" in the English literature) to excite each slit.

Selon l'invention, il est prévu un guide à fentes rayonnantes non inclinées à excitation par motif rayonnant du type comportant des fentes perpendiculaires à l'axe du guide découpées sur un petit côté du guide avec un espacement sensiblement égal à une demi-longueur d'onde de fonctionnement dans le guide, caractérisé en ce que chaque fente est excitée par l'intermédiaire d'un motif rayonnant disposé dans le guide à proximité de la fente, parallèlement audit petit côté, et servant d'antenne de couplage avec l'énergie se propageant dans le guide, ledit motif transmettant l'énergie captée à ladite fente associée par l'intermédiaire d'une ligne de transmission reliée audit motif.According to the invention, there is provided a guide with non-inclined radiating slots excited by radiating pattern of the type comprising slots perpendicular to the axis of the guide cut out on a small side of the guide with a spacing substantially equal to half a length d operating wave in the guide, characterized in that each slot is excited by means of a radiating pattern arranged in the guide near the slot, parallel to said short side, and serving as an antenna for coupling with the energy propagating in the guide, said pattern transmitting the energy captured to said associated slot via a transmission line connected to said pattern.

L'invention sera mieux comprise et d'autres caractéristiques et avantages apparaîtront à l'aide de la description ci-après et des dessins joints où :

  • - la figure 1 représente, vu en perspective, un guide à fentes selon l'invention ;
  • - la figure 2 représente le guide de la figure 1 vu de face, côté fentes rayonnantes ;
  • - les figures 3 et 4 montrent des variantes de réalisation du guide à fentes selon l'invention.
The invention will be better understood and other characteristics and advantages will emerge from the following description and the accompanying drawings, in which:
  • - Figure 1 shows, seen in perspective, a slotted guide according to the invention;
  • - Figure 2 shows the guide of Figure 1 seen from the front, radiating slots side;
  • - Figures 3 and 4 show alternative embodiments of the slotted guide according to the invention.

Sur toutes les figures, les mêmes éléments sont désignés par les mêmes numéros de référence.In all the figures, the same elements are designated by the same reference numbers.

Les figures 1 et 2 représentent un guide d'ondes 1 comportant, découpées sur le petit côté, des fentes rayonnantes 2, 3 non inclinées, c'est-à-dire perpendiculaires à l'axe du guide. Ainsi qu'on l'a déjà mentionné, de telles fentes ne sont normalement pas couplées à l'énergie se propageant dans le guide 1 et ne rayonnent donc pas.Figures 1 and 2 show a waveguide 1 comprising, cut on the short side, radiating slots 2, 3 not inclined, that is to say perpendicular to the axis of the guide. As already mentioned, such slots are normally not coupled to the energy propagating in the guide 1 and therefore do not radiate.

Selon l'invention, on prévoit, sur une plaquette diélectrique 4 fixée contre le petit côté portant les fentes, des motifs rayonnants ("patch") 5, 7 servant d'antenne associés chacun à une ligne de transmission de type microruban 6, 8 coupant transversalement les fentes associées. Les ensembles patch-ligne microruban se répètent au même pas que les fentes, c'est-à-dire sensiblement λg/2 où λg est la longueur d'onde de fonctionnement dans le guide 1.According to the invention, on a dielectric plate 4 fixed against the short side carrying the slots, there are radiating patterns ("patches") 5, 7 serving as antenna each associated with a microstrip type transmission line 6, 8 transversely cutting the associated slots. The microstrip patch-line assemblies are repeated at the same pace as the slots, that is to say substantially λg / 2 where λg is the operating wavelength in the guide 1.

Les motifs rayonnants 5, 7 servent d'antenne de couplage avec l'énergie électromagnétique se propageant dans le guide 1 ; l'énergie prélevée par un motif 5, 7 alimente la ligne 6, 8 qui lui est connectée et celle-ci vient exciter la fente associée 2, 3 qui rayonne alors l'énergie qui lui est ainsi transmise.The radiating patterns 5, 7 serve as a coupling antenna with the electromagnetic energy propagating in the guide 1; the energy taken up by a pattern 5, 7 feeds the line 6, 8 which is connected to it and the latter comes to excite the associated slot 2, 3 which then radiates the energy which is thus transmitted to it.

Les motifs rayonnants 5, 7 et les lignes 6, 8 sont réalisés selon la technique des circuits imprimés sur la face de la plaquette 4 qui n'est pas en contact avec le petit côté portant les fentes. Ce petit côté sert de plan de masse pour les motifs rayonnants 5, 7 et pour les lignes microrubans 6, 8. La plaquette 4 est fixée contre le petit côté par exemple par collage.The radiating patterns 5, 7 and the lines 6, 8 are produced according to the technique of printed circuits on the face of the wafer 4 which is not in contact with the short side carrying the slots. This short side serves as a ground plane for the radiating patterns 5, 7 and for the microstrip lines 6, 8. The plate 4 is fixed against the short side for example by gluing.

Comme on le voit mieux sur la figure 2, les motifs rayonnants ne sont pas placés en face des fentes de façon à ne pas perturber le comportement de celles-ci et le rayonnement qu'elles fournissent. D'autre part, les lignes microrubans 6, 8 sse prolongent d'une longueur sensiblement égale à λg/4 au-delà de la fente associée, ce qui ramène sensiblement un court-circuit au niveau de la fente.As best seen in Figure 2, the radiating patterns are not placed in front of the slots so as not to disturb the behavior of the latter and the radiation they provide. On the other hand, the microstrip lines 6, 8 sse extend by a length substantially equal to λg / 4 beyond the associated slot, which substantially reduces a short circuit at the level of the slot.

Comme on l'a déjà indiqué plus haut, les fentes sont espacées sensiblement de λg/2 et il est nécessaire de fournir un déphasage additionnel de ¶ entre deux fentes consécutives. Ce déphasage est obtenu en prélevant l'énergie alternativement d'un côté et de l'autre du motif correspondant et, par suite, en excitant les fentes 2, 3 alternativement à une extrémité 2′ et à l'autre 3˝ (Figure 2). La fente suivant la fente 3 serait ainsi excitée à son extrémité située du côté de l'extrémité 2′.As already indicated above, the slots are spaced approximately λg / 2 apart and it is necessary to provide an additional phase shift of ¶ between two consecutive slots. This phase shift is obtained by taking the energy alternately from one side and the other of the corresponding pattern and, consequently, by exciting the slots 2, 3 alternately at one end 2 ′ and at the other 3˝ (Figure 2 ). The slot following the slot 3 would thus be excited at its end situated on the side of the end 2 ′.

Sur les figures, on a représenté des motifs rayonnants circulaires. Mais on pourrait choisir toute autre forme géométrique telle que carré, rectangle ou triangle.The figures show circular radiating patterns. But we could choose any other geometric shape such as square, rectangle or triangle.

La valeur du couplage du motif rayonnant avec l'onde propagée dans le guide peut être réglée par le diamètre du motif (ou ses dimensions dans le cas de formes autres que circulaire).The value of the coupling of the radiating pattern with the wave propagated in the guide can be adjusted by the diameter of the pattern (or its dimensions in the case of shapes other than circular).

Une autre façon de régler le coefficient de couplage de la fente est de modifier la position du point de connexion de la ligne microruban sur le motif. En effet, le couplage est théoriquement nul pour un point situé dans le plan médian du guide et croit jusqu'à un maximum lorsque le point de connexion s'éloigne vers les points situés dans le plan médian du motif parallèle aux fentes, c'est-à-dire s'éloigne vers les grands côtés du guide.Another way of adjusting the coupling coefficient of the slit is to modify the position of the connection point of the microstrip line on the pattern. Indeed, the coupling is theoretically zero for a point located in the median plane of the guide and increases to a maximum when the connection point moves away towards the points located in the median plane of the pattern parallel to the slots, this is that is to say moves away towards the long sides of the guide.

La figure 3 représente une variante dans laquelle le maintien en position de la plaquette 4 est obtenu en donnant à celle-ci une largeur légèrement supérieure à la largeur interne du petit côté portant les fentes. On prévoit en outre deux rainures 40, 41 dans les grands côtés du guide 1, adjacentes au petit côté portant les fentes. La plaquette 4 est ensuite glissée dans les rainures 40, 41 où elle est ainsi maintenue en position. Une fixation et une butée quelconque permettent de centrer correctement les ensembles motif-ligne microruban sur les fentes associées.FIG. 3 represents a variant in which the holding in position of the plate 4 is obtained by giving the latter a width slightly greater than the internal width of the short side carrying the slots. In addition, two grooves 40, 41 are provided in the long sides of the guide 1, adjacent to the short side carrying the slots. The plate 4 is then slid into the grooves 40, 41 where it is thus held in position. Any fixing and any stop allows correct centering of the pattern-line microstrip assemblies on the associated slots.

La figure 4, similaire à la figure 2, représente une autre variante de réalisation dans laquelle la ligne microruban 6′, 8′ est reliée électriquement à un bord longitudinal de la fente 2, 3. Cela peut être réalisé par exemple par l'intermédiaire d'un trou métallisé 6˝, 8˝ à travers la plaquette diélectrique. Dans ce cas, la ligne microruban n'a pas besoin de se prolonger au-delà du trou métallisé.Figure 4, similar to Figure 2, shows another alternative embodiment in which the microstrip line 6 ′, 8 ′ is electrically connected to a longitudinal edge of the slot 2, 3. This can be achieved for example via a metallized hole 6 métall, 8˝ through the dielectric plate. In this case, the microstrip line does not need to extend beyond the metallized hole.

Bien entendu, les exemples de réalisation décrits ne sont nullement limitatifs de l'invention.Of course, the embodiments described are in no way limitative of the invention.

Claims (9)

1. Guide à fentes rayonnantes non inclinées à excitation par motif rayonnant du type comportant des fentes perpendiculaires à l'axe du guide découpées sur un petit côté du guide avec un espacement sensiblement égal à une demi-longueur d'onde de fonctionnement dans le guide, caractérisé en ce que chaque fente (2, 3) est excitée par l'intermédiaire d'un motif rayonnant (5, 7) disposé dans le guide (1) à proximité de la fente, parallèlement audit petit côté, et servant d'antenne de couplage avec l'énergie se propageant dans le guide, ledit motif transmettant l'énergie captée à ladite fente associée par l'intermédiaire d'une ligne de transmission (6, 8) reliée audit motif.1. Guide with non-inclined radiating slits excited by radiating pattern of the type comprising slits perpendicular to the axis of the guide cut out on a small side of the guide with a spacing substantially equal to an operating half-wavelength in the guide , characterized in that each slot (2, 3) is excited by means of a radiating pattern (5, 7) arranged in the guide (1) near the slot, parallel to said short side, and serving as antenna for coupling with the energy propagating in the guide, said pattern transmitting the energy captured to said associated slot via a transmission line (6, 8) connected to said pattern. 2. Guide à fentes selon la revendication 1, caractérisé en ce que ladite ligne de transmission est une ligne microruban (6, 8).2. Slotted guide according to claim 1, characterized in that said transmission line is a microstrip line (6, 8). 3. Guide à fentes selon la revendication 2, caractérisé en ce que ladite ligne microruban s'étend parallèlement audit petit côté et transversalement à la fente associée et se prolonge d'une longueur sensiblement égale à un quart de longueur d'onde de fonctionnement au-delà de la fente.3. Slotted guide according to claim 2, characterized in that said microstrip line extends parallel to said short side and transversely to the associated slot and extends a length substantially equal to a quarter wavelength of operation at beyond the slit. 4. Guide à fente selon l'une quelconque des revendications 2 ou 3, caractérisé en ce que lesdits motifs rayonnants (5, 7) et lesdites lignes microrubans (6, 8) sont réalisés par la technique des circuits imprimés sur une face d'une plaquette (4) en matériau diélectrique avec un pas égal à celui des fentes du guide et en ce que ladite plaquette est fixée avec son autre face contre la paroi interne du petit côté dudlt guide portant les fentes, ledit petit côté servant de plan de masse pour lesdites lignes microrubans.4. Slotted guide according to any one of claims 2 or 3, characterized in that said radiating patterns (5, 7) and said microstrip lines (6, 8) are produced by the technique of printed circuits on one side of a plate (4) of dielectric material with a pitch equal to that of the slots of the guide and in that said plate is fixed with its other face against the internal wall of the short side of the guide carrying the slots, said short side serving as a plane of mass for said microstrip lines. 5. Guide à fentes selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le point de liaison de chaque ligne (6, 8) avec le motif associé (5, 7) est situé sur la périphérie dudit motif sensiblement à proximité du plan médian du motif parallèle aux fentes.5. Slotted guide according to any one of claims 1 to 4, characterized in that the point of connection of each line (6, 8) with the associated pattern (5, 7) is located on the periphery of said pattern substantially at proximity of the median plane of the pattern parallel to the slits. 6. Guide à fentes selon l'une quelconque des revendications 1 à 5, caractérisé en ce que lesdites lignes (6, 8) prélèvent l'énergie captée par lesdits motifs (5, 7) alternativement d'un côté et de l'autre des motifs correspondants de manière à introduire un déphasage supplémentaire de ¶ entre les excitations de deux fentes consécutives.6. Slotted guide according to any one of claims 1 to 5, characterized in that said lines (6, 8) take the energy captured by said patterns (5, 7) alternately on one side and the other corresponding patterns so as to introduce an additional phase shift of ¶ between the excitations of two consecutive slits. 7. Guide à fentes selon la revendication 6, caractérisé en ce que lesdites lignes (6, 8) excitent les fentes associées alternativement à une extrémité (2′) et à l'autre (3˝) des fentes, correspondant au côté de prélèvement de l'énergie sur le motif associé.7. Slot guide according to claim 6, characterized in that said lines (6, 8) excite the slots associated alternately at one end (2 ′) and at the other (3˝) of the slots, corresponding to the sampling side energy on the associated pattern. 8. Guide à fentes selon la revendication 4, caractérisé en ce que ladite ligne microruban (6′, 8′) est reliée à un des bords longitudinaux de la fente associée (2, 3) par un trou métallisé (6˝, 8˝) percé à travers ladite plaquette (4), ladite ligne n'étant pas prolongée au-delà dudit trou.8. Slotted guide according to claim 4, characterized in that said microstrip line (6 ′, 8 ′) is connected to one of the longitudinal edges of the associated slot (2, 3) by a metallized hole (6˝, 8˝ ) drilled through said plate (4), said line not being extended beyond said hole. 9. Guide à fentes selon l'une quelconque des revendications 4 à 8, caractérisé en ce que ladite plaquette (4) est légèrement plus large que la largeur Interne du petit côté du guide portant les fentes (2, 3) et en ce que chacun des grands côtés du guide (1) comporte une rainure (40, 41) adjacente audit petit côté portant les fentes pour enfiler ladite plaquette dans lesdites rainures et la maintenir en place.9. Slot guide according to any one of claims 4 to 8, characterized in that said plate (4) is slightly wider than the internal width of the short side of the guide carrying the slots (2, 3) and in that each of the long sides of the guide (1) has a groove (40, 41) adjacent to said short side carrying the slots for threading said plate into said grooves and holding it in place.
EP90403194A 1989-11-14 1990-11-09 Slotted wave guide radiator with non-inclined slots excited by conductive printed patterns Expired - Lifetime EP0439970B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8914896 1989-11-14
FR8914896A FR2654555B1 (en) 1989-11-14 1989-11-14 GUIDE TO RADIANT SLOTS NOT INCLINED WITH EXCITATION BY RADIATION PATTERN.

Publications (2)

Publication Number Publication Date
EP0439970A1 true EP0439970A1 (en) 1991-08-07
EP0439970B1 EP0439970B1 (en) 1994-12-28

Family

ID=9387366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90403194A Expired - Lifetime EP0439970B1 (en) 1989-11-14 1990-11-09 Slotted wave guide radiator with non-inclined slots excited by conductive printed patterns

Country Status (6)

Country Link
US (1) US5170174A (en)
EP (1) EP0439970B1 (en)
JP (1) JPH03173205A (en)
CA (1) CA2029329A1 (en)
DE (1) DE69015608T2 (en)
FR (1) FR2654555B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685820B1 (en) * 1991-12-31 1994-03-18 Thomson Csf GUIDE TO RADIANT SLOTS NOT INCLINED EXCITED BY METAL SHUTTERS.
FR2697949B1 (en) * 1992-11-06 1995-01-06 Thomson Csf Antenna for radar, in particular for designation and trajectography.
FR2725075B1 (en) * 1994-09-23 1996-11-15 Thomson Csf METHOD AND DEVICE FOR ENLARGING THE RADIATION DIAGRAM OF AN ACTIVE ANTENNA
US5870061A (en) * 1996-05-30 1999-02-09 Howell Laboratories, Inc. Coaxial slot feed system
US7436361B1 (en) * 2006-09-26 2008-10-14 Rockwell Collins, Inc. Low-loss dual polarized antenna for satcom and polarimetric weather radar
US7498896B2 (en) * 2007-04-27 2009-03-03 Delphi Technologies, Inc. Waveguide to microstrip line coupling apparatus
US8743004B2 (en) * 2008-12-12 2014-06-03 Dedi David HAZIZA Integrated waveguide cavity antenna and reflector dish
DE102013012315B4 (en) * 2013-07-25 2018-05-24 Airbus Defence and Space GmbH Waveguide radiators. Group Antenna Emitter and Synthetic Aperture Radar System
JP6752394B2 (en) 2018-05-02 2020-09-09 三菱電機株式会社 Waveguide slot array antenna
WO2023117427A1 (en) 2021-12-23 2023-06-29 Huber+Suhner Ag Antenna device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574433A (en) * 1943-10-01 1951-11-06 Roger E Clapp System for directional interchange of energy between wave guides and free space
US3176300A (en) * 1964-01-24 1965-03-30 Avco Corp Adjustable slotted wave guide radiator with coupling element
US3806945A (en) * 1973-06-04 1974-04-23 Us Navy Stripline antenna
US4303923A (en) * 1979-08-09 1981-12-01 Motorola Inc. Probe loop feed for transverse edge waveguide slot radiator
EP0048817A1 (en) * 1980-09-29 1982-04-07 Hughes Aircraft Company Rod-excited waveguide slot antenna

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827054A (en) * 1973-07-24 1974-07-30 Us Air Force Reentry vehicle stripline slot antenna
US4360813A (en) * 1980-03-19 1982-11-23 The Boeing Company Power combining antenna structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574433A (en) * 1943-10-01 1951-11-06 Roger E Clapp System for directional interchange of energy between wave guides and free space
US3176300A (en) * 1964-01-24 1965-03-30 Avco Corp Adjustable slotted wave guide radiator with coupling element
US3806945A (en) * 1973-06-04 1974-04-23 Us Navy Stripline antenna
US4303923A (en) * 1979-08-09 1981-12-01 Motorola Inc. Probe loop feed for transverse edge waveguide slot radiator
EP0048817A1 (en) * 1980-09-29 1982-04-07 Hughes Aircraft Company Rod-excited waveguide slot antenna

Also Published As

Publication number Publication date
EP0439970B1 (en) 1994-12-28
JPH03173205A (en) 1991-07-26
DE69015608D1 (en) 1995-02-09
US5170174A (en) 1992-12-08
DE69015608T2 (en) 1995-05-11
FR2654555B1 (en) 1992-06-19
FR2654555A1 (en) 1991-05-17
CA2029329A1 (en) 1991-05-15

Similar Documents

Publication Publication Date Title
EP3547450A1 (en) Radiating element with circular polarisation implementing a resonance in a fabry-perot cavity
EP0899814B1 (en) Radiating structure
FR2647269A1 (en) SLOTTED ANTENNA SYSTEM
FR2614472A1 (en) ANTENNA NETWORK WITH HEXAGONAL CORS
FR2481526A1 (en) ANTENNA WITH THIN STRUCTURE
FR2619658A1 (en) SLOTTED ANTENNA
EP0082751B1 (en) Microwave radiator and its use in an electronically scanned antenna
EP0439970B1 (en) Slotted wave guide radiator with non-inclined slots excited by conductive printed patterns
EP0074311A1 (en) Broadband rectangular slotted wave guide
FR2638025A1 (en) SLOTTED ANTENNA
FR2704358A1 (en) Waveguide polarisation duplexer
CA2070705A1 (en) Dual polarization elementary microwave antenna
FR2646564A1 (en) SLOTTED FLAT ANTENNA SYSTEM FOR TE MODE WAVE
EP0149400B1 (en) Aerial with a circular-mode promotion system
FR2613140A1 (en) PARALLELEPIPEDIC CORNET ANTENNA WITH DISTRIBUTION OF THE LINEARIZED OPENING FIELD IN TWO POLARIZATIONS
FR2685130A1 (en) Square chip antenna with two crossed polarisations excited by two orthogonal slots
EP0456579A1 (en) Plane orientable antenna, functioning in the microwave range
FR2490025A1 (en) Monomode or multimode radar horn - contains radiating elements deposited on thin dielectric substrate located perpendicular to direction of polarisation
FR2638288A1 (en) Slot antenna
EP0550320B1 (en) Waveguide with non-inclined slots activated by metallic inserts
FR2470457A1 (en) SLOT NETWORK ANTENNA WITH AMPLITUDE DISTRIBUTION IN A SMALL CIRCULAR OPENING
EP1677385A1 (en) Electronically scanned wideband antenna
FR2808126A1 (en) Two band circular polarisation high frequency telecommunication satellite radiating element having first/second electromagnetic band and coaxial input frequency access
EP0551780B1 (en) A phase controlled reflector antenna array
EP3306746B1 (en) Cavity radiating element and radiating network comprising at least two radiating elements

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE DK ES GB IT SE

17P Request for examination filed

Effective date: 19920125

17Q First examination report despatched

Effective date: 19931112

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THOMSON-CSF

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE DK ES GB IT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19941228

Ref country code: DK

Effective date: 19941228

ITF It: translation for a ep patent filed

Owner name: JACOBACCI CASETTA & PERANI S.P.A.

EAL Se: european patent in force in sweden

Ref document number: 90403194.5

REF Corresponds to:

Ref document number: 69015608

Country of ref document: DE

Date of ref document: 19950209

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950303

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19951109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19951110

26N No opposition filed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19951109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960801

EUG Se: european patent has lapsed

Ref document number: 90403194.5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051109