EP0605338A1 - Patch antenna with dual polarisation and corresponding device for transmission/reception - Google Patents

Patch antenna with dual polarisation and corresponding device for transmission/reception Download PDF

Info

Publication number
EP0605338A1
EP0605338A1 EP93460038A EP93460038A EP0605338A1 EP 0605338 A1 EP0605338 A1 EP 0605338A1 EP 93460038 A EP93460038 A EP 93460038A EP 93460038 A EP93460038 A EP 93460038A EP 0605338 A1 EP0605338 A1 EP 0605338A1
Authority
EP
European Patent Office
Prior art keywords
resonance
hand
slots
axis
slot
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
EP93460038A
Other languages
German (de)
French (fr)
Other versions
EP0605338B1 (en
Inventor
Jean-Marc Baracco
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.)
Orange SA
Original Assignee
France Telecom 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 France Telecom SA filed Critical France Telecom SA
Publication of EP0605338A1 publication Critical patent/EP0605338A1/en
Application granted granted Critical
Publication of EP0605338B1 publication Critical patent/EP0605338B1/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
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line

Definitions

  • the field of the invention is that of antennas produced in printed technology and working in frequency reuse by diversity of polarization.
  • the invention relates to a double polarized plated antenna, of the type comprising two radiating elements both participating in the generation of two microwave waves with distinct linear polarizations, each radiating element being supplied, through at least two cut slits in a ground plane, by two power supplies each corresponding to one of the two distinct polarizations.
  • This type of antenna is of great interest for the realization of electronically controlled antenna networks.
  • the invention has many applications, such as for example the production of antennas to be carried on a satellite. Indeed, in this case, the frequency reuse makes it possible to significantly limit the spectral congestion of the antennas used.
  • a known solution of a double polarized plated antenna making it possible to obtain a wide passband, consists in supplying a radiating element, through two coupling slots cut out in a ground plane, by two supply lines each corresponding to one of the two polarizations.
  • This antenna therefore comprises two separate transmission channels, each channel being associated with a feed line and a slot.
  • the supply lines are either of the microstrip type or of the triplate type.
  • the radiating element resonates on the one hand along a first resonance axis perpendicular to the axis of the first slot, and on the other hand along a second resonance axis perpendicular to the axis of the second slot.
  • the intersection of the first and second resonance axes is made at a right angle and defines a center of resonance.
  • This known antenna has numerous drawbacks, and in particular a deflection of the beam, a cross polarization and a coupling between the two channels.
  • transverse offset of each slot causes the appearance of transverse currents which generate cross-polarization.
  • the invention particularly aims to overcome these various drawbacks of the state of the art.
  • an objective of the invention is to provide a double polarized plated antenna, of the type comprising at least one radiating element participating in the generation of two microwave waves with distinct polarizations, each radiating element being supplied, through at least two slots cut out in a ground plane, by two feeds each corresponding to one of the two distinct polarizations, this antenna having a large passband.
  • the invention also aims to provide such an antenna which makes it possible to greatly reduce the coupling and the level of cross polarization, and to eliminate the deflection of the beam, while retaining a large bandwidth.
  • the symmetry of the slots with respect to their respective resonance axis also makes it possible to greatly reduce the coupling between the two channels corresponding to the two polarizations, namely on the one hand the first channel comprising the first supply line and the first slot, and secondly the second path comprising the second supply line and the second and third slots. Indeed, this symmetry makes it possible to eliminate two by two the capacitive couplings between the first slit directed along the second resonance axis, and the second and third slits directed along the first resonance axis.
  • the radiating elements both participate in the generation of two distinctly polarized microwave waves, and it is possible to reduce the size of the first slit and increase the frequency decoupling between the two channels.
  • said resonance center is located on a straight line on the one hand perpendicular to the plane or planes containing said radiating element (s) and on the other hand passing through the center of said radiating element (s).
  • the center of resonance is aligned with the center of each of the two radiating elements. Therefore, the beam deflection is eliminated.
  • the length of said first slot is less the length of said second and third slots.
  • the slots do not resonate at the same frequency and the decoupling between the two channels is further improved.
  • said second and third slots are remote from said first slot.
  • This distance of the slots from each other also improves the decoupling between the two channels.
  • said slots are of substantially rectangular shape and said radiating elements are of substantially square shape.
  • the invention also relates to a transmission / reception device comprising at least one antenna according to the invention.
  • This device can include several antennas, in particular in the form of networks.
  • the invention therefore relates to a double polarized plated antenna.
  • Figures 1 and 2 respectively show a top view and a sectional view of a preferred embodiment of an antenna according to the invention.
  • the first supply line 13 cooperates with the first slot 15.
  • the second supply line 14 comprises two arms 14 A , 14 B , each arm of this second supply line cooperating with one of the second and third slot (namely the first arm, referenced 14 A , with the second slot 16 and the second arm, referenced 14 B , with the third slot 17).
  • the second and third slots 16, 17 are of the same length L2 and parallel to each other.
  • the second resonance axis 118 is identical to the axis 117 of the first slot 15, and the first resonance axis 116 is identical to the axis 119 of the second and third slots.
  • the intersection of the first and second resonance axes 116, 118 takes place at a right angle and defines a resonance center 120.
  • the first slot 15 is perpendicular to the second and third slots 16, 17, and is placed equidistant from each of the second and third slots 16, 17.
  • the axis 117 of this first slot 15 passes through the center of each of the second and third slots 16, 17.
  • the slots are rectangular and the length L1 of the first slot 15 is less than the length L2 of each of the second and third slots 16, 17.
  • the first and second radiating elements 11, 12 are of substantially square shape. For each of these two elements, a geometric center is defined (121 and 122 respectively).
  • the center 121 of the first radiating element 11, the center 122 of the second radiating element 12 and the resonance center 120 of the slots 15, 16, 17 are aligned on a straight line 123 perpendicular to the planes containing the first and second radiating elements 11, 12.
  • the first slot 15 is superimposed with the central zone of each of the first and second radiating elements 11, 12.
  • the second and third slots 16, 17 are superimposed with the peripheral zones of the first and second radiating elements 11, 12, these zones being located on either side of the central area and away from it.
  • the first and second supply lines 13, 14 are for example three-plate lines. It can also be microstrip lines.
  • FIG. 3 presents a logic diagram summarizing the operating principle of an antenna according to the invention.
  • Such an antenna includes two transmission channels.
  • the antenna emits two waves 31, 32 of the same frequency but with distinct polarizations, each polarization corresponding to one of the two transmission channels.
  • the two distinct polarizations are linear polarizations.
  • the first transmission path is represented by arrows in solid lines, the second transmission path being represented by dotted arrows.
  • the information of the first transmission channel is provided by the first supply line 33.
  • This first supply line 33 feeds, through the first slot 34, on the one hand the first radiating element 35 and on the other hand the second radiating element 36.
  • These two radiating elements 35, 36 participate in the generation of the first wave 31 having the first polarization.
  • the information of the second transmission channel is supplied by the second supply line 37.
  • This second supply line supplies, through the second and third slots 38, 39, on the one hand the first radiating element 35 and d on the other hand the second radiating element 36.
  • These two radiating elements 35, 36 participate in the generation of the second wave 32 having the second polarization.
  • Figure 4 shows the decoupling variation curve (in dB) between the two transmission channels as a function of frequency (in GHz).
  • This decoupling is less than -35 dB over the entire bandwidth 41 of the two transmission channels, ie between 1.4 GHz and 1.7 GHz approximately.
  • the bandwidth of each transmission channel is defined as the set of wave frequencies for which the Standing Wave Ratio (ROS) is less than 2.
  • This very large decoupling value is due to the topological arrangement of the coupling slots. Indeed, this symmetrical arrangement makes it possible to eliminate two by two the capacitive couplings between the first slot on the one hand, and the second and third slots on the other hand.
  • Figures 5 and 6 each show the variation curve of the standing wave ratio (ROS) as a function of the frequency, respectively for the first and the second transmission channel.
  • ROS standing wave ratio
  • Each of these two curves makes it possible to calculate the passband [f1, f2] of a transmission channel, the passband being equal to the frequency band for which the ROS is less than 2.
  • This passband can also be expressed in percentage, obtained by dividing the width (f2 - f1) of the passband by the center frequency (f3) of this passband.
  • the antenna according to the invention has a large bandwidth on each of the two transmission channels.
  • FIG. 7 shows the co-polarization diagram of the second antenna transmission channel presented in FIGS. 1 and 2, for a frequency equal to 1.43 GHz.
  • This copolarization diagram comprises a plurality of curves represented in a reference frame whose axes correspond substantially to the resonance axes of the slots (axes referenced 116, 118 in FIG. 1).
  • Each curve corresponds to a distinct level of field radiated by the antenna.
  • the different possible levels are represented in the table in FIG. 9 which indicates the correspondence between the curve references and the associated values of radiated field level.
  • the inventors have also shown that the antenna according to the invention makes it possible to avoid depointing also for all the other frequencies of the passband.
  • Elimination of the deflection of the beam is obtained in particular thanks to the alignment of the center of each of the two radiating elements with the center of resonance of the slits.
  • FIG. 8 shows the diagram in cross polarization of the second transmission path of the antenna presented in FIGS. 1 and 2, for a frequency equal to 1.43 GHz.
  • This cross-polarization diagram includes, like the copolarization diagram presented in relation to FIG. 7, a plurality of contour lines.
  • This low level of cross polarization is obtained with the antenna according to the invention, in particular thanks to the transverse symmetry of the slots with respect to their respective resonance axis.
  • the preferred embodiment of an antenna according to the invention comprises two radiating elements.
  • the invention is not limited to this single case but also relates to the case where the antenna only comprises a radiating element.

Abstract

The invention relates to a patch antenna, of the type comprising at least one radiating element generating two UHF waves with separate linear polarisations. According to the invention, the radiating element or elements (11, 12) are fed, on the one hand, through a first slot (15), by a first feed line (13), and, on the other hand, through a second (16) and a third (17) slot, by a second feed line (14), the second and third slots (16, 17) being of the same length (L2) and parallel to each other. Each radiating element (11, 12) resonates, on the one hand, along a first resonance axis (116) perpendicular to the axis (117) of the first slot (15) and, on the other hand, along a second resonance axis (118) perpendicular to the axis (119) of the second and third slots (16, 17), the intersection of these two resonance axes (116, 118) being at a right angle and defining a resonance centre (120). The first slot (15) is centred transversely with respect to the said first resonance axis (116) and longitudinally with respect to the said resonance centre (120). The second (16) and third (17) slots are centred transversely with respect to the said second resonance axis (118) and placed at equal distances from the said resonance centre (120). <IMAGE>

Description

Le domaine de l'invention est celui des antennes réalisées en technologie imprimée et travaillant en réutilisation de fréquence par diversité de polarisation.The field of the invention is that of antennas produced in printed technology and working in frequency reuse by diversity of polarization.

Plus précisément, l'invention concerne une antenne plaquée à double polarisation, du type comprenant deux éléments rayonnants participant tous les deux à l'engendrement de deux ondes hyperfréquences à polarisations linéaires distinctes, chaque élément rayonnant étant alimenté, à travers au moins deux fentes découpées dans un plan de masse, par deux alimentations correspondant chacune à une des deux polarisations distinctes.More specifically, the invention relates to a double polarized plated antenna, of the type comprising two radiating elements both participating in the generation of two microwave waves with distinct linear polarizations, each radiating element being supplied, through at least two cut slits in a ground plane, by two power supplies each corresponding to one of the two distinct polarizations.

Ce type d'antennes est d'un grand intérêt pour la réalisation de réseaux d'antennes à commande électronique.This type of antenna is of great interest for the realization of electronically controlled antenna networks.

L'invention a de nombreuses applications, telles que par exemple la réalisation d'antennes devant être embarquées sur un satellite. En effet, dans ce cas, la réutilisation de fréquence permet de limiter de façon significative l'encombrement spectral des antennes mises en oeuvre.The invention has many applications, such as for example the production of antennas to be carried on a satellite. Indeed, in this case, the frequency reuse makes it possible to significantly limit the spectral congestion of the antennas used.

Les techniques d'alimentation les plus classiques des antennes imprimées, que ce soit par une ligne microruban à contact direct ou bien par une sonde coaxiale, ne permettent pas d'obtenir une large bande passante avec un faible niveau de polarisation croisée.The most conventional feeding techniques for printed antennas, whether by a microstrip line with direct contact or by a coaxial probe, do not make it possible to obtain a large passband with a low level of cross polarization.

Une solution connue d'antenne plaquée à double polarisation, permettant l'obtention d'une large bande passante, consiste à alimenter un élément rayonnant, à travers deux fentes de couplage découpées dans un plan de masse, par deux lignes d'alimentation correspondant chacune à une des deux polarisations.A known solution of a double polarized plated antenna, making it possible to obtain a wide passband, consists in supplying a radiating element, through two coupling slots cut out in a ground plane, by two supply lines each corresponding to one of the two polarizations.

Cette antenne comprend donc deux voies de transmission distinctes, chaque voie étant associée à une ligne d'alimentation et à une fente.This antenna therefore comprises two separate transmission channels, each channel being associated with a feed line and a slot.

Généralement, les lignes d'alimentation sont soit du type microruban, soit du type triplaque.Generally, the supply lines are either of the microstrip type or of the triplate type.

Dans une telle antenne connue, l'élément rayonnant résonne d'une part selon un premier axe de résonance perpendiculaire à l'axe de la première fente, et d'autre part selon un second axe de résonance perpendiculaire à l'axe de la seconde fente. L'intersection des premier et second axes de résonance se fait selon un angle droit et définit un centre de résonance.In such a known antenna, the radiating element resonates on the one hand along a first resonance axis perpendicular to the axis of the first slot, and on the other hand along a second resonance axis perpendicular to the axis of the second slot. The intersection of the first and second resonance axes is made at a right angle and defines a center of resonance.

Cette antenne connue présente de nombreux inconvénients, et notamment un dépointage du faisceau, une polarisation croisée et un couplage entre les deux voies.This known antenna has numerous drawbacks, and in particular a deflection of the beam, a cross polarization and a coupling between the two channels.

En effet, l'obtention d'une large bande passante, à l'aide des deux résonateurs que sont la fente et l'élément rayonnant, nécessite que ceux-ci aient des dimensions longitudinales proches. Par conséquent, les fentes sont de tailles importantes, ce qui oblige à les décaler longitudinalement et transversalement par rapport à leur axe de résonance respectif.Indeed, obtaining a wide bandwidth, using the two resonators that are the slot and the radiating element, requires that these have close longitudinal dimensions. Consequently, the slots are of large sizes, which means that they have to be offset longitudinally and transversely with respect to their respective resonance axis.

Du fait du décalage longitudinal de chaque fente, le centre de résonance des fentes n'est pas aligné avec le centre de l'élément rayonnant. Ceci crée, pour le résonateur, une différence de phase entre les deux éléments constituant ce résonateur (à savoir la fente et l'élément rayonnant), et donc un dépointage du faisceau.Due to the longitudinal offset of each slot, the center of resonance of the slots is not aligned with the center of the radiating element. This creates, for the resonator, a phase difference between the two elements constituting this resonator (namely the slit and the radiating element), and therefore a depointing of the beam.

De plus, le décalage transversal de chaque fente provoque l'apparition de courants transversaux qui sont générateurs de polarisation croisée.In addition, the transverse offset of each slot causes the appearance of transverse currents which generate cross-polarization.

Enfin, la proximité des fentes entre elles, ainsi que la dissymétrie générée par les divers décalages des fentes par rapport à leur axe de résonance respectif, ne permettent pas d'obtenir un très grand découplage entre les deux voies.Finally, the proximity of the slots to each other, as well as the asymmetry generated by the various offsets of the slots with respect to their respective resonance axis, do not make it possible to obtain very great decoupling between the two channels.

L'invention a notamment pour objectif de pallier ces différents inconvénients de l'état de la technique.The invention particularly aims to overcome these various drawbacks of the state of the art.

Plus précisément, un objectif de l'invention est de fournir une antenne plaquée à double polarisation, du type comprenant au moins un élément rayonnant participant à la génération de deux ondes hyperfréquences à polarisations distinctes, chaque élément rayonnant étant alimenté, à travers au moins deux fentes découpées dans un plan de masse, par deux alimentations correspondant chacune à une des deux polarisations distinctes, cette antenne possédant une large bande passante.More specifically, an objective of the invention is to provide a double polarized plated antenna, of the type comprising at least one radiating element participating in the generation of two microwave waves with distinct polarizations, each radiating element being supplied, through at least two slots cut out in a ground plane, by two feeds each corresponding to one of the two distinct polarizations, this antenna having a large passband.

L'invention a également pour objectif de fournir une telle antenne qui permette de diminuer fortement le couplage et le niveau de polarisation croisée, et d'éliminer le dépointage du faisceau, tout en conservant une large bande passante.The invention also aims to provide such an antenna which makes it possible to greatly reduce the coupling and the level of cross polarization, and to eliminate the deflection of the beam, while retaining a large bandwidth.

Ces objectifs ainsi que d'autres qui apparaîtront par la suite, sont atteints selon l'invention à l'aide d'une antenne plaquée à double polarisation, du type comprenant au moins un élément rayonnant engendrant deux ondes hyperfréquences à polarisations linéaires distinctes, chacun desdits éléments rayonnants étant alimenté, à travers au moins deux fentes découpées dans un plan de masse, par une première et une seconde lignes d'alimentation correspondant chacune à une desdites polarisations distinctes,
   chacun desdits éléments rayonnants étant alimenté :

  • d'une part par ladite première ligne d'alimentation à travers une première fente, et
  • d'autre part par ladite seconde ligne d'alimentation à travers une seconde et une troisième fentes de même longueur (L2) et parallèles entre elles, chacun desdits éléments rayonnants résonant :
  • d'une part, selon un premier axe de résonance perpendiculaire à l'axe de ladite première fente, et
  • d'autre part, selon un second axe de résonance perpendiculaire à l'axe de chacune desdites seconde et troisième fentes,

l'intersection desdits premier et second axes de résonance se faisant selon un angle droit et définissant un centre de résonance,
   ladite première fente étant d'une part centrée transversalement par rapport audit premier axe de résonance et d'autre part centrée longitudinalement par rapport audit centre de résonance,
   et lesdites seconde et troisième fentes étant d'une part centrées transversalement par rapport audit second axe de résonance et d'autre part placées à égale distance dudit centre de résonance.These objectives, as well as others which will appear subsequently, are achieved according to the invention using a double polarized plated antenna, of the type comprising at least one radiating element generating two microwave waves with distinct linear polarizations, each said radiating elements being supplied, through at least two slots cut out in a ground plane, by first and second supply lines each corresponding to one of said distinct polarizations,
each of said radiating elements being supplied:
  • on the one hand by said first supply line through a first slot, and
  • on the other hand by said second supply line through a second and a third slots of the same length (L2) and parallel to each other, each of said radiating elements resonating:
  • on the one hand, along a first resonance axis perpendicular to the axis of said first slot, and
  • on the other hand, along a second resonance axis perpendicular to the axis of each of said second and third slots,

the intersection of said first and second resonance axes being made at a right angle and defining a resonance center,
said first slot being on the one hand centered transversely to said first resonance axis and on the other hand centered longitudinally with respect to said resonance center,
and said second and third slots being on the one hand centered transversely with respect to said second resonance axis and on the other hand placed at equal distance from said resonance center.

De cette façon, les fentes ne sont pas décalées transversalement. Cette disposition topologique des fentes de couplage permet d'éviter l'apparition de courants transversaux, et par là-même la génération d'une polarisation croisée.In this way, the slots are not offset transversely. This topological arrangement of the coupling slots makes it possible to avoid the appearance of transverse currents, and thereby the generation of a cross polarization.

De plus, la symétrie des fentes par rapport à leur axe de résonance respectif permet également de diminuer fortement le couplage entre les deux voies correspondant aux deux polarisations, à savoir d'une part la première voie comprenant la première ligne d'alimentation et la première fente, et d'autre part la seconde voie comprenant la seconde ligne d'alimentation et les seconde et troisième fentes. En effet, cette symétrie permet d'éliminer deux à deux les couplages capacitifs entre la première fente dirigée selon le second axe de résonance, et les seconde et troisième fentes dirigées selon le premier axe de résonance.In addition, the symmetry of the slots with respect to their respective resonance axis also makes it possible to greatly reduce the coupling between the two channels corresponding to the two polarizations, namely on the one hand the first channel comprising the first supply line and the first slot, and secondly the second path comprising the second supply line and the second and third slots. Indeed, this symmetry makes it possible to eliminate two by two the capacitive couplings between the first slit directed along the second resonance axis, and the second and third slits directed along the first resonance axis.

Dans un mode de réalisation préférentiel de l'invention, l'antenne comprend un premier et un second éléments rayonnants, ledit second élément rayonnant étant disposé selon un plan sensiblement parallèle au plan dudit premier élément rayonnant, lesdits premier et second éléments rayonnants étant alimentés:

  • d'une part par ladite première ligne d'alimentation à travers ladite première fente, et
  • d'autre part par ladite seconde ligne d'alimentation à travers lesdites seconde et troisième fentes, lesdits premier et second éléments rayonnants résonant d'une part selon ledit premier axe de résonance et d'autre part selon ledit second axe de résonance.
In a preferred embodiment of the invention, the antenna comprises first and second radiating elements, said second radiating element being arranged in a plane substantially parallel to the plane of said first radiating element, said first and second radiating elements being supplied:
  • on the one hand by said first supply line through said first slot, and
  • on the other hand by said second supply line through said second and third slots, said first and second radiating elements resonating on the one hand along said first resonance axis and on the other hand along said second resonance axis.

Ainsi, les éléments rayonnants participent tous les deux à la génération des deux ondes hyperfréquences à polarisations distinctes, et il est possible de diminuer la taille de la première fente et augmenter le découplage fréquentiel entre les deux voies.Thus, the radiating elements both participate in the generation of two distinctly polarized microwave waves, and it is possible to reduce the size of the first slit and increase the frequency decoupling between the two channels.

Avantageusement, ledit centre de résonance est situé sur une droite d'une part perpendiculaire au ou aux plans contenant le ou lesdits éléments rayonnants et d'autre part passant par le centre du ou desdits éléments rayonnants.Advantageously, said resonance center is located on a straight line on the one hand perpendicular to the plane or planes containing said radiating element (s) and on the other hand passing through the center of said radiating element (s).

Ainsi, le centre de résonance est aligné avec le centre de chacun des deux éléments rayonnants. Par conséquent, le dépointage du faisceau est éliminé.Thus, the center of resonance is aligned with the center of each of the two radiating elements. Therefore, the beam deflection is eliminated.

De façon avantageuse, la longueur de ladite première fente est inférieure à la longueur desdites seconde et troisième fentes.Advantageously, the length of said first slot is less the length of said second and third slots.

Du fait de cette différence de taille, les fentes ne résonnent pas à la même fréquence et le découplage entre les deux voies est encore amélioré.Due to this difference in size, the slots do not resonate at the same frequency and the decoupling between the two channels is further improved.

Préférentiellement, lesdites seconde et troisième fentes sont éloignées de ladite première fente.Preferably, said second and third slots are remote from said first slot.

Cet éloignement des fentes les unes par rapport aux autres permet également d'améliorer le découplage entre les deux voies.This distance of the slots from each other also improves the decoupling between the two channels.

Avantageusement, lesdites première et seconde lignes d'alimentation appartiennent au groupe comprenant :

  • les lignes microruban ;
  • les lignes triplaque.
Advantageously, said first and second supply lines belong to the group comprising:
  • microstrip lines;
  • the triplate lines.

Dans un mode de réalisation préférentiel, lesdites fentes sont de forme sensiblement rectangulaire et lesdits éléments rayonnants sont de forme sensiblement carrée.In a preferred embodiment, said slots are of substantially rectangular shape and said radiating elements are of substantially square shape.

Enfin, l'invention concerne également un dispositif d'émission/réception comportant au moins une antenne selon l'invention.Finally, the invention also relates to a transmission / reception device comprising at least one antenna according to the invention.

Ce dispositif peut comprendre plusieurs antennes, notamment sous forme de réseaux.This device can include several antennas, in particular in the form of networks.

D'autres caractéristiques de l'invention apparaîtront à la lecture de la description suivante d'un mode de réalisation préférentiel de l'invention, donné à titre d'exemple indicatif et non limitatif, et des dessins annexés, dans lesquels :

  • la figure 1 présente une vue de dessus d'un mode de réalisation préférentiel d'une antenne selon l'invention ;
  • la figure 2 présente une vue en coupe de l'antenne présentée sur la figure 1 ;
  • la figure 3 présente un diagramme logique résumant le principe de fonctionnement d'une antenne selon l'invention telle que présentée sur les figures 1 et 2 ;
  • la figure 4 présente la courbe de variation, en fonction de la fréquence, du découplage entre les deux voies de transmission d'une antenne telle que présentée sur les figures 1 et 2 ;
  • les figures 5 et 6 présentent chacune la courbe de variation, en fonction de la fréquence, du rapport d'onde stationnaire, respectivement pour la première et la seconde voie de transmission d'une antenne telle que présentée sur les figures 1 et 2 ;
  • la figure 7 présente un diagramme en copolarisation de l'une des deux voies de transmission d'une antenne telle que présentée sur les figures 1 et 2 ;
  • la figure 8 présente un diagramme en polarisation croisée de l'une des deux voies de transmission d'une antenne telle que présentée sur les figures 1 et 2 ;
  • la figure 9 présente un tableau de correspondance entre les références des courbes présentées sur les figures 7 et 8 et les différents niveaux de champ rayonné par l'antenne.
Other characteristics of the invention will appear on reading the following description of a preferred embodiment of the invention, given by way of non-limiting example, and the accompanying drawings, in which:
  • Figure 1 shows a top view of a preferred embodiment of an antenna according to the invention;
  • Figure 2 shows a sectional view of the antenna shown in Figure 1;
  • FIG. 3 presents a logic diagram summarizing the operating principle of an antenna according to the invention as presented in FIGS. 1 and 2;
  • FIG. 4 shows the variation curve, as a function of the frequency, of the decoupling between the two transmission channels of an antenna such that shown in Figures 1 and 2;
  • Figures 5 and 6 each show the variation curve, as a function of frequency, of the standing wave ratio, respectively for the first and the second transmission path of an antenna as presented in Figures 1 and 2;
  • FIG. 7 presents a diagram in co-polarization of one of the two transmission channels of an antenna as presented in FIGS. 1 and 2;
  • FIG. 8 shows a diagram in crossed polarization of one of the two transmission channels of an antenna as presented in FIGS. 1 and 2;
  • FIG. 9 presents a table of correspondence between the references of the curves presented in FIGS. 7 and 8 and the different levels of field radiated by the antenna.

L'invention concerne donc une antenne plaquée à double polarisation.The invention therefore relates to a double polarized plated antenna.

Les figures 1 et 2 présentent respectivement une vue de dessus et une vue en coupe d'un mode de réalisation préférentiel d'une antenne selon l'invention.Figures 1 and 2 respectively show a top view and a sectional view of a preferred embodiment of an antenna according to the invention.

Une telle antenne comprend notamment :

  • un premier 11 et un second 12 éléments rayonnants ;
  • une première 13 et une seconde 14 lignes d'alimentation ;
  • une première 15, une seconde 16 et une troisième 17 fentes découpées dans un second 18 plan de masse ;
  • un premier plan de masse 19 et plusieurs couches de substrat 110 à 115.
Such an antenna includes in particular:
  • a first 11 and a second 12 radiating elements;
  • first 13 and second 14 supply lines;
  • a first 15, a second 16 and a third 17 slots cut in a second 18 ground plane;
  • a first ground plane 19 and several layers of substrate 110 to 115.

Ces différents éléments constitutifs de l'antenne sont disposés selon des plans superposés dans l'ordre suivant, en partant du plan inférieur :

  • le premier plan de masse 19 ;
  • deux couches de substrat 115, 114 ;
  • les deux lignes d'alimentation 13, 14 ;
  • une couche de substrat 113 ;
  • le second plan de masse 18 dans lequel sont découpées les trois fentes 15, 16, 17 ;
  • une couche de substrat 112 ;
  • le premier élément rayonnant 11 ;
  • une couche de substrat 111 ;
  • le second élément rayonnant 12 ;
  • une couche de substrat 110.
These various constituent elements of the antenna are arranged in superimposed planes in the following order, starting from the lower plane:
  • the first ground plane 19;
  • two layers of substrate 115, 114;
  • the two supply lines 13, 14;
  • a substrate layer 113;
  • the second ground plane 18 in which the three slots 15, 16, 17 are cut;
  • a substrate layer 112;
  • the first radiating element 11;
  • a substrate layer 111;
  • the second radiating element 12;
  • a layer of substrate 110.

La première ligne d'alimentation 13 coopère avec la première fente 15. La seconde ligne d'alimentation 14 comprend deux bras 14A, 14B, chaque bras de cette seconde ligne d'alimentation coopérant avec une des seconde et troisième fente (à savoir le premier bras, référencé 14A, avec la seconde fente 16 et le second bras, référencé 14B, avec la troisième fente 17).The first supply line 13 cooperates with the first slot 15. The second supply line 14 comprises two arms 14 A , 14 B , each arm of this second supply line cooperating with one of the second and third slot (namely the first arm, referenced 14 A , with the second slot 16 and the second arm, referenced 14 B , with the third slot 17).

Les seconde et troisième fentes 16, 17 sont de même longueur L2 et parallèles entre elles.The second and third slots 16, 17 are of the same length L2 and parallel to each other.

Chacun des deux éléments rayonnants 11,12 résonne :

  • d'une part selon un premier axe de résonance 116 perpendiculaire à l'axe 117 de la première fente 15 ; et
  • d'autre part selon un second axe de résonance 118 perpendiculaire à l'axe 119 de chacune des seconde et troisième fente 16,17.
Each of the two radiating elements 11, 12 resonates:
  • on the one hand along a first resonance axis 116 perpendicular to the axis 117 of the first slot 15; and
  • on the other hand along a second resonance axis 118 perpendicular to the axis 119 of each of the second and third slots 16,17.

Dans le mode de réalisation présenté sur la figure 1, le second axe de résonance 118 est identique à l'axe 117 de la première fente 15, et le premier axe de résonance 116 est identique à l'axe 119 des seconde et troisième fentes.In the embodiment shown in FIG. 1, the second resonance axis 118 is identical to the axis 117 of the first slot 15, and the first resonance axis 116 is identical to the axis 119 of the second and third slots.

L'intersection des premier et second axes de résonance 116, 118 se fait selon un angle droit et définit un centre de résonance 120.The intersection of the first and second resonance axes 116, 118 takes place at a right angle and defines a resonance center 120.

Selon l'invention, la disposition topologique des fentes est la suivante :

  • la première fente 15 est d'une part centrée transversalement par rapport au premier axe de résonance 116, et d'autre part centrée longitudinalement par rapport au centre de résonance 120 ;
  • les seconde et troisième fentes 16, 17 sont d'une part centrées transversalement par rapport au second axe de résonance 118, et d'autre part placées à égale distance du centre de résonance 120. Ainsi, ces seconde et troisième fentes 16, 17 se comportent comme une fente unique centrée longitudinalement et transversalement.
According to the invention, the topological arrangement of the slots is as follows:
  • the first slot 15 is on the one hand centered transversely to the first resonance axis 116, and on the other hand centered longitudinally with respect to the resonance center 120;
  • the second and third slots 16, 17 are on the one hand centered transversely to the second resonance axis 118, and on the other hand placed at equal distance from the resonance center 120. Thus, these second and third slots 16, 17 behave like a single slot centered longitudinally and transversely.

En d'autres termes, la première fente 15 est perpendiculaire aux seconde et troisième fentes 16, 17, et est placée à égale distance de chacune des seconde et troisième fentes 16, 17. L'axe 117 de cette première fente 15 passe par le centre de chacune des seconde et troisième fentes 16, 17.In other words, the first slot 15 is perpendicular to the second and third slots 16, 17, and is placed equidistant from each of the second and third slots 16, 17. The axis 117 of this first slot 15 passes through the center of each of the second and third slots 16, 17.

Dans ce mode de réalisation, les fentes sont rectangulaires et la longueur L1 de la première fente 15 est inférieure à la longueur L2 de chacune des seconde et troisième fentes 16, 17.In this embodiment, the slots are rectangular and the length L1 of the first slot 15 is less than the length L2 of each of the second and third slots 16, 17.

Les premier et second éléments rayonnants 11, 12 sont de forme sensiblement carrée. Pour chacun de ces deux éléments, on définit un centre géométrique (121 et 122 respectivement).The first and second radiating elements 11, 12 are of substantially square shape. For each of these two elements, a geometric center is defined (121 and 122 respectively).

Le centre 121 du premier élément rayonnant 11, le centre 122 du second élément rayonnant 12 et le centre de résonance 120 des fentes 15, 16, 17 sont alignés sur une droite 123 perpendiculaire aux plans contenant les premier et second éléments rayonnants 11, 12.The center 121 of the first radiating element 11, the center 122 of the second radiating element 12 and the resonance center 120 of the slots 15, 16, 17 are aligned on a straight line 123 perpendicular to the planes containing the first and second radiating elements 11, 12.

La première fente 15 est superposée avec la zone centrale de chacun des premier et second éléments rayonnants 11, 12. Les seconde et troisième fentes 16, 17 sont superposées avec les zones périphériques des premier et second éléments rayonnants 11, 12, ces zones étant situées de part et d'autre de la zone centrale et éloignées de celle-ci.The first slot 15 is superimposed with the central zone of each of the first and second radiating elements 11, 12. The second and third slots 16, 17 are superimposed with the peripheral zones of the first and second radiating elements 11, 12, these zones being located on either side of the central area and away from it.

Les première et seconde lignes d'alimentation 13, 14 sont par exemple des lignes triplaque. Il peut également s'agir de lignes microruban.The first and second supply lines 13, 14 are for example three-plate lines. It can also be microstrip lines.

La figure 3 présente un diagramme logique résumant le principe de fonctionnement d'une antenne selon l'invention.FIG. 3 presents a logic diagram summarizing the operating principle of an antenna according to the invention.

Une telle antenne comprend deux voies de transmission.Such an antenna includes two transmission channels.

L'antenne émet deux ondes 31, 32 de même fréquence mais de polarisations distinctes, chaque polarisation correspondant à une des deux voies de transmission.The antenna emits two waves 31, 32 of the same frequency but with distinct polarizations, each polarization corresponding to one of the two transmission channels.

Généralement, les deux polarisations distinctes sont des polarisations linéaires.Generally, the two distinct polarizations are linear polarizations.

La première voie de transmission est représentée par des flèches en trait plein, la seconde voie de transmission étant représentée par des flèches en pointillé.The first transmission path is represented by arrows in solid lines, the second transmission path being represented by dotted arrows.

L'information de la première voie de transmission est fournie par la première ligne d'alimentation 33. Cette première ligne d'alimentation 33 alimente, à travers la première fente 34, d'une part le premier élément rayonnant 35 et d'autre part le second élément rayonnant 36. Ces deux éléments rayonnants 35, 36 participent à la génération de la première onde 31 possédant la première polarisation.The information of the first transmission channel is provided by the first supply line 33. This first supply line 33 feeds, through the first slot 34, on the one hand the first radiating element 35 and on the other hand the second radiating element 36. These two radiating elements 35, 36 participate in the generation of the first wave 31 having the first polarization.

L'information de la seconde voie de transmission est fournie par la seconde ligne d'alimentation 37. Cette seconde ligne d'alimentation alimente, à travers les seconde et troisième fentes 38, 39, d'une part le premier élément rayonnant 35 et d'autre part le second élément rayonnant 36. Ces deux éléments rayonnants 35, 36 participent à la génération de la seconde onde 32 possédant la seconde polarisation.The information of the second transmission channel is supplied by the second supply line 37. This second supply line supplies, through the second and third slots 38, 39, on the one hand the first radiating element 35 and d on the other hand the second radiating element 36. These two radiating elements 35, 36 participate in the generation of the second wave 32 having the second polarization.

Ainsi, en appliquant ce principe de fonctionnement à une antenne telle que présentée précédemment en relation avec les figures 1 et 2, on obtient une antenne plaquée à double polarisation (les deux polarisations étant linéaires et orthogonales l'une par rapport à l'autre) dont les performances sont présentées en relation avec les figures 4 à 8.Thus, by applying this principle of operation to an antenna as presented above in relation to FIGS. 1 and 2, we obtain a plated antenna with double polarization (the two polarizations being linear and orthogonal to each other) whose performances are presented in relation to FIGS. 4 to 8.

La figure 4 présente la courbe de variation du découplage (en dB) entre les deux voies de transmission en fonction de la fréquence (en GHz).Figure 4 shows the decoupling variation curve (in dB) between the two transmission channels as a function of frequency (in GHz).

Ce découplage est inférieur à -35 dB sur toute la bande passante 41 des deux voies de transmission, soit entre 1,4 GHz et 1,7 GHz environ. Comme expliqué par la suite en relation avec les figures 5 et 6, la bande passante de chaque voie de transmission est définie comme l'ensemble des fréquences d'ondes pour lesquelles le Rapport d'Onde Stationnaire (ROS) est inférieur à 2.This decoupling is less than -35 dB over the entire bandwidth 41 of the two transmission channels, ie between 1.4 GHz and 1.7 GHz approximately. As explained below in relation to FIGS. 5 and 6, the bandwidth of each transmission channel is defined as the set of wave frequencies for which the Standing Wave Ratio (ROS) is less than 2.

Cette très grande valeur de découplage est due à la disposition topologique des fentes de couplage. En effet, cette disposition symétrique permet d'éliminer deux à deux les couplages capacitifs entre la première fente d'une part, et les secondes et troisième fentes d'autre part.This very large decoupling value is due to the topological arrangement of the coupling slots. Indeed, this symmetrical arrangement makes it possible to eliminate two by two the capacitive couplings between the first slot on the one hand, and the second and third slots on the other hand.

Les figures 5 et 6 présentent chacune la courbe de variation du rapport d'onde stationnaire (ROS) en fonction de la fréquence, respectivement pour la première et la seconde voie de transmission.Figures 5 and 6 each show the variation curve of the standing wave ratio (ROS) as a function of the frequency, respectively for the first and the second transmission channel.

Chacune de ces deux courbes permet de calculer la bande passante [f₁, f₂] d'une voie de transmission, la bande passante étant égale à la bande de fréquences pour lesquelles le R.O.S est inférieur à 2. Cette bande passante peut également s'exprimer en pourcentage, obtenu par division de la largeur (f₂ - f₁) de la bande passante par la fréquence centrale (f₃) de cette bande passante.Each of these two curves makes it possible to calculate the passband [f₁, f₂] of a transmission channel, the passband being equal to the frequency band for which the ROS is less than 2. This passband can also be expressed in percentage, obtained by dividing the width (f₂ - f₁) of the passband by the center frequency (f₃) of this passband.

Pour la première voie de transmission (figure 5), la bande passante 51 est sensiblement comprise entre f₁ = 1,41 GHz et f₂ = 1,71 GHz. Avec une fréquence centrale f₃ = 1,55 GHz, cette bande passante 51 est égale à 19 %.For the first transmission channel (FIG. 5), the bandwidth 51 is substantially between f₁ = 1.41 GHz and f₂ = 1.71 GHz. With a central frequency f₃ = 1.55 GHz, this bandwidth 51 is equal to 19%.

Pour la seconde voie de transmission (figure 6), la bande passante 61 est sensiblement comprise entre f₁ = 1,38 GHz et f₂ = 1,70 GHz. Avec une fréquence centrale f₃ = 1,55 GHz, cette bande passante 61 est égale à 21 %.For the second transmission channel (FIG. 6), the bandwidth 61 is substantially between f₁ = 1.38 GHz and f₂ = 1.70 GHz. With a central frequency f₃ = 1.55 GHz, this bandwidth 61 is equal to 21%.

En résumé, l'antenne selon l'invention possède une large bande passante sur chacune des deux voies de transmission.In summary, the antenna according to the invention has a large bandwidth on each of the two transmission channels.

La figure 7 présente le diagramme en copolarisation de la seconde voie de transmission de l'antenne présentée sur les figures 1 et 2, pour une fréquence égale à 1,43 GHz.FIG. 7 shows the co-polarization diagram of the second antenna transmission channel presented in FIGS. 1 and 2, for a frequency equal to 1.43 GHz.

Ce diagramme en copolarisation comprend une pluralité de courbes représentées dans un repère dont les axes correspondent sensiblement aux axes de résonance des fentes (axes référencés 116, 118 sur la figure 1).This copolarization diagram comprises a plurality of curves represented in a reference frame whose axes correspond substantially to the resonance axes of the slots (axes referenced 116, 118 in FIG. 1).

Chaque courbe correspond à un niveau distinct de champ rayonné par l'antenne. Les différents niveaux possibles sont représentés sur le tableau de la figure 9 qui indique la correspondance entre les références de courbe et les valeurs associées de niveau de champ rayonné.Each curve corresponds to a distinct level of field radiated by the antenna. The different possible levels are represented in the table in FIG. 9 which indicates the correspondence between the curve references and the associated values of radiated field level.

L'analyse de ce diagramme en copolarisation montre que l'antenne selon l'invention permet d'éviter le dépointage du faisceau pour la fréquence 1,43 GHz puisque le maximum de champ rayonné correspond au centre de résonance.Analysis of this copolarization diagram shows that the antenna according to the invention makes it possible to avoid the deflection of the beam for the frequency 1.43 GHz since the maximum of radiated field corresponds to the center of resonance.

De plus, les inventeurs ont également montré que l'antenne selon l'invention permet d'éviter le dépointage également pour toutes les autres fréquences de la bande passante.In addition, the inventors have also shown that the antenna according to the invention makes it possible to avoid depointing also for all the other frequencies of the passband.

L'élimination du dépointage du faisceau est obtenue notamment grâce à l'alignement du centre de chacun des deux éléments rayonnants avec le centre de résonance des fentes.Elimination of the deflection of the beam is obtained in particular thanks to the alignment of the center of each of the two radiating elements with the center of resonance of the slits.

La figure 8 présente le diagramme en polarisation croisée de la seconde voie de transmission de l'antenne présentée sur les figures 1 et 2, pour une fréquence égale à 1,43 GHz.FIG. 8 shows the diagram in cross polarization of the second transmission path of the antenna presented in FIGS. 1 and 2, for a frequency equal to 1.43 GHz.

Ce diagramme en polarisation croisée comprend, comme le diagramme en copolarisation présenté en relation avec la figure 7, une pluralité de courbes de niveaux.This cross-polarization diagram includes, like the copolarization diagram presented in relation to FIG. 7, a plurality of contour lines.

L'analyse de ce diagramme montre que la polarisation croisée de la seconde voie de transmission est inférieure à -33 dB pour cette fréquence, dans l'axe radioélectrique de l'antenne. Les inventeurs ont par ailleurs montré que la polarisation croisée de la première voie de transmission présente les mêmes performances. Les inventeurs ont également montré que ces résultats sont valables pour toutes les fréquences de la bande passante.Analysis of this diagram shows that the cross polarization of the second transmission channel is less than -33 dB for this frequency, in the radio axis of the antenna. The inventors have also shown that the cross polarization of the first transmission channel has the same performance. The inventors have also shown that these results are valid for all the frequencies of the bandwidth.

Ce faible niveau de polarisation croisée est obtenu, avec l'antenne selon l'invention, notamment grâce à la symétrie transversale des fentes par rapport à leur axe de résonance respectif.This low level of cross polarization is obtained with the antenna according to the invention, in particular thanks to the transverse symmetry of the slots with respect to their respective resonance axis.

Le mode de réalisation préférentiel d'une antenne selon l'invention, présentée en relation avec les figures 1 à 8, comprend deux éléments rayonnants.The preferred embodiment of an antenna according to the invention, presented in relation to FIGS. 1 to 8, comprises two radiating elements.

Il est clair que l'invention n'est pas limitée à ce seul cas mais concerne également le cas où l'antenne ne comprend qu'un élément rayonnant.It is clear that the invention is not limited to this single case but also relates to the case where the antenna only comprises a radiating element.

Claims (9)

Antenne plaquée à double polarisation, du type comprenant au moins un élément rayonnant (11, 12) engendrant deux ondes hyperfréquences à polarisations linéaires distinctes, chacun desdits éléments rayonnants (11,12) étant alimenté, à travers au moins deux fentes (15,16,17) découpées dans un plan de masse (18), par une première (13) et une seconde (14) lignes d'alimentation correspondant chacune à une desdites polarisations distinctes,
   caractérisée en ce que chacun desdits éléments rayonnants (11,12) est alimenté : - d'une part par ladite première ligne d'alimentation (13) à travers une première fente (15), et - d'autre part par ladite seconde ligne d'alimentation (14) à travers une seconde (16) et une troisième (17) fentes de même longueur (L2) et parallèles entre elles, chacun desdits éléments rayonnants résonant : - d'une part, selon un premier axe de résonance (116) perpendiculaire à l'axe (117) de ladite première fente (15), et - d'autre part, selon un second axe de résonance (118) perpendiculaire à l'axe (119) de chacune desdites seconde (16) et troisième (17) fentes, l'intersection desdits premier (116) et second (118) axes de résonance se faisant selon un angle droit et définissant un centre de résonance (120),
   en ce que ladite première fente (15) est d'une part centrée transversalement par rapport audit premier axe de résonance (116) et d'autre part centrée longitudinalement par rapport audit centre de résonance (120),
   et en ce que lesdites seconde (16) et troisième (17) fentes sont d'une part centrées transversalement par rapport audit second axe de résonance (118) et d'autre part placées à égale distance dudit centre de résonance (120).Double polarized plated antenna, of the type comprising at least one radiating element (11, 12) generating two microwave waves with distinct linear polarizations, each of said radiating elements (11,12) being supplied, through at least two slots (15,16 , 17) cut out in a ground plane (18), by a first (13) and a second (14) supply lines each corresponding to one of said distinct polarizations,
characterized in that each of said radiating elements (11,12) is supplied: - firstly by said first supply line (13) through a first slot (15), and - on the other hand by said second supply line (14) through a second (16) and a third (17) slots of the same length (L2) and parallel to each other, each of said resonant radiating elements: - on the one hand, along a first resonance axis (116) perpendicular to the axis (117) of said first slot (15), and - on the other hand, along a second resonance axis (118) perpendicular to the axis (119) of each of said second (16) and third (17) slots, the intersection of said first (116) and second (118) resonance axes being made at a right angle and defining a resonance center (120),
in that said first slot (15) is on the one hand centered transversely to said first resonance axis (116) and on the other hand centered longitudinally with respect to said resonance center (120),
and in that said second (16) and third (17) slots are on the one hand centered transversely with respect to said second resonance axis (118) and on the other hand placed at equal distance from said resonance center (120). Antenne selon la revendication 1, caractérisée en ce qu'elle comprend un premier et un second éléments rayonnants (12), ledit second élément rayonnant 12) étant disposé selon un plan sensiblement parallèle au plan dudit premier élément rayonnant (11),
   et en ce que lesdits premier (11) et second (12) éléments rayonnants sont alimentés : - d'une part par ladite première ligne d'alimentation (13) à travers ladite première fente, et - d'autre part par ladite seconde ligne d'alimentation (14) à travers lesdites seconde (16) et troisième (17) fentes, lesdits premier (11) et second (12) éléments rayonnants résonant d'une part selon ledit premier axe de résonance (116) et d'autre part selon ledit second axe de résonance (118).Antenna according to claim 1, characterized in that it comprises first and second radiating elements (12), said second radiating element 12) being arranged in a plane substantially parallel to the plane of said first radiating element (11),
and in that said first (11) and second (12) radiating elements are supplied: - firstly by said first supply line (13) through said first slot, and - on the other hand by said second supply line (14) through said second (16) and third (17) slots, said first (11) and second (12) radiating elements resonating on the one hand along said first resonance axis (116) and on the other hand along said second resonance axis (118). Antenne selon l'une quelconque des revendications 1 et 2, caractérisée en ce que ledit centre de résonance (120) est situé sur une droite (123) d'une part perpendiculaire au ou auxdits plans contenant le ou lesdits éléments rayonnants (11,12) et d'autre part passant par le centre (121, 122) du ou desdits éléments rayonnants (11,12).Antenna according to any one of claims 1 and 2, characterized in that said resonance center (120) is located on a straight line (123) on the one hand perpendicular to said plane or planes containing said radiating element (s) (11,12 ) and on the other hand passing through the center (121, 122) of the said radiating element (s) (11,12). Antenne selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la longueur (L1) de ladite première fente (15) est inférieure à la longueur (L2) desdites seconde (16) et troisième (17) fentes.Antenna according to any one of claims 1 to 3, characterized in that the length (L1) of said first slot (15) is less than the length (L2) of said second (16) and third (17) slots. Antenne selon l'une quelconque des revendications 1 à 4, caractérisée en ce que lesdites seconde (16) et troisième (17) fentes sont éloignées de ladite première fente (15).An antenna according to any one of claims 1 to 4, characterized in that said second (16) and third (17) slots are spaced from said first slot (15). Antenne selon l'une quelconque des revendications 1 à 5, caractérisée en ce que lesdites première (13) et seconde (14) lignes d'alimentation appartiennent au groupe comprenant : - les lignes microruban ; - les lignes triplaque. Antenna according to any one of claims 1 to 5, characterized in that said first (13) and second (14) supply lines belong to the group comprising: - microstrip lines; - triplate lines. Antenne selon l'une quelconque des revendications 1 à 6, caractérisé en ce que lesdites fentes (15, 16, 17) de forme sont de forme sensiblement rectangulaire.An antenna according to any one of claims 1 to 6, characterized in that said shaped slots (15, 16, 17) are of substantially rectangular shape. Antenne selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le ou lesdits éléments rayonnants (11, 12) sont de forme sensiblement carrée.Antenna according to any one of claims 1 to 7, characterized in that that the said radiating element (s) (11, 12) are of substantially square shape. Dispositif d'émission/réception comportant au moins une antenne selon l'une quelconque des revendications 1 à 8.Transmission / reception device comprising at least one antenna according to any one of Claims 1 to 8.
EP19930460038 1992-12-29 1993-12-20 Patch antenna with dual polarisation and corresponding device for transmission/reception Expired - Lifetime EP0605338B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9216048 1992-12-29
FR9216048A FR2700067B1 (en) 1992-12-29 1992-12-29 Double polarized plated antenna and corresponding transmission / reception device.

Publications (2)

Publication Number Publication Date
EP0605338A1 true EP0605338A1 (en) 1994-07-06
EP0605338B1 EP0605338B1 (en) 1999-02-24

Family

ID=9437391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930460038 Expired - Lifetime EP0605338B1 (en) 1992-12-29 1993-12-20 Patch antenna with dual polarisation and corresponding device for transmission/reception

Country Status (3)

Country Link
EP (1) EP0605338B1 (en)
DE (1) DE69323612T2 (en)
FR (1) FR2700067B1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0671779A1 (en) * 1994-03-09 1995-09-13 Matsushita Electric Works, Ltd. Low profile polarization diversity planar antenna
WO1998015030A1 (en) * 1996-09-30 1998-04-09 Italtel S.P.A. Microstrip antenna with control of the direction of the axis of maximum radiation
EP0901185A1 (en) * 1997-07-29 1999-03-10 Alcatel Dual polarisation patch antenna
FR2827430A1 (en) * 2001-07-11 2003-01-17 France Telecom Satellite biband receiver/transmitter printed circuit antenna having planar shapes radiating elements and first/second reactive coupling with radiating surface areas coupled simultaneously
FR2828014A1 (en) * 2001-07-27 2003-01-31 D Phy Espace Dev De Produits H Antenna for flat antennae receiving signals of Ultra and Very High Frequency incorporates a feed circuit, a parallel surface conductor and at least one conducting block connected to the micro-tape of the feed circuit and the earth surface
WO2014070298A1 (en) * 2012-11-01 2014-05-08 Ubiquiti Networks, Inc. Coax coupled slot antenna
EP3582326A1 (en) * 2018-06-15 2019-12-18 Nokia Solutions and Networks Oy Antenna coupling
GB2583567A (en) * 2019-02-27 2020-11-04 Secr Defence Dual polarised planar antenna, base station and method of manufacture
CN113519090A (en) * 2019-03-14 2021-10-19 华为技术有限公司 Feeding method and feeding structure for antenna element

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10114012B4 (en) * 2000-05-11 2011-02-24 Amtran Technology Co., Ltd., Chung Ho chip antenna
WO2011103841A2 (en) * 2011-04-19 2011-09-01 华为技术有限公司 Microstrip antenna
CN114597644B (en) * 2022-03-25 2024-03-29 常熟市泓博通讯技术股份有限公司 28GHz millimeter wave dual polarized antenna and array thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903033A (en) * 1988-04-01 1990-02-20 Ford Aerospace Corporation Planar dual polarization antenna
FR2666691A2 (en) * 1990-07-11 1992-03-13 Ct Reg Innovat Transfert Tech Microwave antenna
EP0481417A1 (en) * 1990-10-18 1992-04-22 Alcatel Espace Device for feeding an antenna element radiating two orthogonal polarisations

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903033A (en) * 1988-04-01 1990-02-20 Ford Aerospace Corporation Planar dual polarization antenna
FR2666691A2 (en) * 1990-07-11 1992-03-13 Ct Reg Innovat Transfert Tech Microwave antenna
EP0481417A1 (en) * 1990-10-18 1992-04-22 Alcatel Espace Device for feeding an antenna element radiating two orthogonal polarisations

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DAS ET POZAR: "Multiport Scattering Analysis of General Multilayered Printed Antennas Fed by Multiple Feed Ports : Part II - Applications", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. 40, no. 5, May 1992 (1992-05-01), NEW YORK US, pages 482 - 491, XP000279202, DOI: doi:10.1109/8.142622 *
EDIMO ET AL.: "OPTIMISED FEEDING OF DUAL POLARISED BROADBAND APERTURE-COUPLED PRINTED ANTENNA", ELECTRONICS LETTERS., vol. 28, no. 19, September 1992 (1992-09-01), STEVENAGE GB, pages 1785 - 1787 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5519406A (en) * 1994-03-09 1996-05-21 Matsushita Electric Works, Ltd. Low profile polarization diversity planar antenna
EP0671779A1 (en) * 1994-03-09 1995-09-13 Matsushita Electric Works, Ltd. Low profile polarization diversity planar antenna
WO1998015030A1 (en) * 1996-09-30 1998-04-09 Italtel S.P.A. Microstrip antenna with control of the direction of the axis of maximum radiation
EP0901185A1 (en) * 1997-07-29 1999-03-10 Alcatel Dual polarisation patch antenna
US7091907B2 (en) 2001-07-11 2006-08-15 France Telecom Reactive coupling antenna comprising two radiating elements
FR2827430A1 (en) * 2001-07-11 2003-01-17 France Telecom Satellite biband receiver/transmitter printed circuit antenna having planar shapes radiating elements and first/second reactive coupling with radiating surface areas coupled simultaneously
WO2003007423A1 (en) * 2001-07-11 2003-01-23 France Telecom Reactive coupling antenna comprising two radiating elements
FR2828014A1 (en) * 2001-07-27 2003-01-31 D Phy Espace Dev De Produits H Antenna for flat antennae receiving signals of Ultra and Very High Frequency incorporates a feed circuit, a parallel surface conductor and at least one conducting block connected to the micro-tape of the feed circuit and the earth surface
WO2003012921A1 (en) * 2001-07-27 2003-02-13 D.Phy Espace Antenna
WO2014070298A1 (en) * 2012-11-01 2014-05-08 Ubiquiti Networks, Inc. Coax coupled slot antenna
EP3582326A1 (en) * 2018-06-15 2019-12-18 Nokia Solutions and Networks Oy Antenna coupling
GB2583567A (en) * 2019-02-27 2020-11-04 Secr Defence Dual polarised planar antenna, base station and method of manufacture
CN113519090A (en) * 2019-03-14 2021-10-19 华为技术有限公司 Feeding method and feeding structure for antenna element

Also Published As

Publication number Publication date
DE69323612T2 (en) 1999-10-21
FR2700067B1 (en) 1995-03-17
DE69323612D1 (en) 1999-04-01
EP0605338B1 (en) 1999-02-24
FR2700067A1 (en) 1994-07-01

Similar Documents

Publication Publication Date Title
EP3547450B1 (en) Radiating element with circular polarisation implementing a resonance in a fabry-perot cavity
CA1290449C (en) Device for exciting a circularly polarized wage guide by means of a planar antenna
EP0714151B1 (en) Broadband monopole antenna in uniplanar printed circuit technology and transmit- and/or receive device with such an antenna
FR2752646A1 (en) PLANE PRINTED ANTENNA WITH OVERLAPPING ELEMENTS SHORT CIRCUITS
FR2810163A1 (en) IMPROVEMENT TO ELECTROMAGNETIC WAVE EMISSION / RECEPTION SOURCE ANTENNAS
EP0542595A1 (en) Microstrip antenna device especially for satellite telephone transmissions
FR2648626A1 (en) RADIANT ELEMENT DIPLEXANT
EP0605338B1 (en) Patch antenna with dual polarisation and corresponding device for transmission/reception
FR2652453A1 (en) COAXIAL ANTENNA HAVING A PROGRESSIVE WAVE POWER TYPE.
EP0430745B1 (en) Circular polarized antenna, particularly for array antenna
FR3105884A1 (en) Circular polarization dual band Ka satellite antenna horn
CA2006291C (en) Bifrequency radiating device
EP1346442A1 (en) Printed patch antenna
WO2003052872A1 (en) Circular polarization antenna
EP1188202B1 (en) Device for transmitting and/or receiving signals
FR2705167A1 (en) Small-sized, wide-band patch antenna, and corresponding transmitting/receiving device
EP0477102B1 (en) Directional network with adjacent radiator elements for radio communication system and unit with such a directional network
WO1996008055A1 (en) Very large band, double polarisation, miniature planar antenna
FR2629644A1 (en) DISSYMETRICAL BROADBAND LOOPED ANTENNA, IN PARTICULAR ANTENNA FOR TRANSMISSION, AND NETWORK ANTENNA FORMED OF A PLURALITY OF SUCH ANTENNAS
WO2020127854A1 (en) Elementary microstrip antenna and array antenna
EP0654845B1 (en) Adaptable dipole radiating element in printed circuit technology, method for adjustment of the adaptation and corresponding array
FR2799580A1 (en) PRINTED BROADBAND PRINTED ANTENNA WITH LOW CROSS POLARIZATION LEVEL AND CORRESPONDING ANTENNA ARRAY
EP0429338A1 (en) Circularly polarised antenna particularly for antenna arrays
FR2751138A1 (en) Microstrip array antenna
FR2635228A1 (en) Plane array antenna including supply lines printed as coplanar guides cooperating with recesses made in the earth plane

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 GB

17P Request for examination filed

Effective date: 19940819

17Q First examination report despatched

Effective date: 19960530

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB

REF Corresponds to:

Ref document number: 69323612

Country of ref document: DE

Date of ref document: 19990401

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

Effective date: 19990323

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

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20061124

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20061127

Year of fee payment: 14

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20071220

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080701

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071220