EP2309598A2 - Directional support such as a reflector with a sectoral pattern for a 3G mobile terminal - Google Patents

Directional support such as a reflector with a sectoral pattern for a 3G mobile terminal Download PDF

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Publication number
EP2309598A2
EP2309598A2 EP10178781A EP10178781A EP2309598A2 EP 2309598 A2 EP2309598 A2 EP 2309598A2 EP 10178781 A EP10178781 A EP 10178781A EP 10178781 A EP10178781 A EP 10178781A EP 2309598 A2 EP2309598 A2 EP 2309598A2
Authority
EP
European Patent Office
Prior art keywords
support
symmetry
plane
plate
panel
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.)
Withdrawn
Application number
EP10178781A
Other languages
German (de)
French (fr)
Other versions
EP2309598A3 (en
Inventor
Eduardo Motta Cruz
Julien Hautcoeur
Laurent Dantec
Nathalie Rabu-Guiouillier
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.)
Bouygues Telecom SA
Original Assignee
Bouygues Telecom SA
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Filing date
Publication date
Application filed by Bouygues Telecom SA filed Critical Bouygues Telecom SA
Publication of EP2309598A2 publication Critical patent/EP2309598A2/en
Publication of EP2309598A3 publication Critical patent/EP2309598A3/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/18—Reflecting surfaces; Equivalent structures comprising plurality of mutually inclined plane surfaces, e.g. corner reflector
    • H01Q15/20—Collapsible reflectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/106—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using two or more intersecting plane surfaces, e.g. corner reflector antennas

Definitions

  • the field of the invention is that of telecommunication antennas, and more particularly that of antennas for wireless networks and in particular cellular mobile communication networks and more particularly those of third generation (3G) based on the UMTS standard ( in English, " Universal Mobile Telecommunications System ").
  • a service offered by mobile communication operators is mobile access to the 3G cellular network via a computer to connect to the Internet.
  • a 3G antenna usually in the form of a USB ( Universal Serial Bus ).
  • a problem with this type of device is that when the user is inside a building the performance in terms of receiving the 3G signal is limited and the user must to improve the quality of signal reception out of the building or deploy expensive means of the active amplification type (repeaters, pico / micro / macro base stations).
  • the invention makes it possible to improve the balance of the transmission / reception power of a signal originating / going to a cellular network.
  • the invention relates to a reflective support of a point or quasi-point radiating source, the support being defined by a longitudinal plane of symmetry and comprising: a first panel and a second panel, each panel being rectangular and is disposed divergently with respect to the plane of symmetry; a rectangular adapter plate disposed perpendicularly to the plane of symmetry, the plane of symmetry and the plate having at its intersection the longitudinal axis of symmetry of the plate; a support plate for supporting the radiating source, the support plate being arranged with respect to the first and second panels such that the longitudinal axis of symmetry of the source is in the plane of symmetry of the reflective support.
  • the invention relates to an antenna assembly comprising a reflective support according to the first aspect of the invention and a point or quasi-point radiating source defined by a longitudinal axis of symmetry, the reflective support plate being intended to support the radiating source so that the longitudinal axis of symmetry of the source is in the plane of symmetry of the reflective support, the antenna assembly producing in operation radiation along the longitudinal plane of symmetry.
  • the longitudinal symmetry axis of the point or quasi-point radiating source is situated at a distance of between 0.5 and 0.8 wavelength, typically 0.7 wavelength of the intersection of the planes in which are respectively located the first and second panels of the reflective support.
  • the antennal assembly of the invention makes it possible to improve the directivity to exchange with a cellular network in particular which is characterized by a sectoral opening in the horizontal plane, in other words a quasi-constant maximum directivity in a given angular range in this plane.
  • the invention relates to a communication assembly comprising a terminal and an antenna assembly according to the second aspect of the invention, the assembly being intended for exchanging signals with base stations of a cellular network.
  • the figure 1 illustrates a dwelling 1000 in which a communication set is arranged.
  • the communication set comprises a 3G type terminal 100 and is connected to a 3G cellular network via a point or quasi-point radiating source, for example a USB 3G key (not shown).
  • a point or quasi-point radiating source for example a USB 3G key (not shown).
  • the 3G network is broadcast by several base stations B1, B2, B3, B4 of a cellular network.
  • a mobile terminal located on the plane of the opening 10 for example a window or a bay window, there is a preferred area favorable to communications between the terminal and the base stations located in a zone Z where there are one or more base stations.
  • the 3G key is fixed on a reflector support 1 having a directivity oriented towards the zone Z and which improves the quality of transmission / reception of the transmitted / received signal.
  • the reflector support 1 is preferably disposed on an opening 10 for example a window or a bay window.
  • the improvement results in an amplification of the transmitted / received signal in the zone Z of optimal directivity.
  • the Figures 2a and 2b generally illustrate an antennal assembly comprising a reflector support 1 and a point source radiating 2 or quasi-point.
  • the set illustrated on the figure 2b includes a foldable stand.
  • the figure 3 illustrates in more detail the geometrical structure of the antenna assembly of the figure 2a .
  • the reflective support is defined by a longitudinal plane of symmetry P and comprises a rectangular bottom plate 13; a first panel 11 and a second panel 12.
  • Each panel 11, 12 is rectangular and is disposed divergently with respect to the plane of symmetry P.
  • the panels are in particular arranged so as to each form an angle of 45 ° with the plane of symmetry P and an angle of 90 ° between them.
  • each panel is of length L between 100 and 250 mm, typically 200 mm and the width is between 100 and 200, typically 141 mm.
  • the bottom plate 13 is of length L identical to the length L of the long sides of the panels and the width l "'of the bottom plate is between 25 and 50 mm, typically 40 mm.
  • the reflector support further comprises a trapezoidal support plate 21 arranged perpendicular to the plane of symmetry P. It is noted that the trapezoidal plate is defined by a small edge, a large edge and two sides.
  • the support plate 21 is arranged such that the small edge of the support plate coincides with a small edge of the base plate and each side of the support plate coincides with one side of the first panel and one side of the second panel, respectively. .
  • a second support plate (not shown) can also be envisaged. In this case it is arranged in the same way as the other but at the opposite end of the reflector support.
  • the dimensions of the support plate are adapted to those of the panels 11, 12.
  • the figure 4 illustrates the geometric structure of the support plate.
  • the reflector support comprises an adapter plate 31 arranged parallel to the bottom plate 13.
  • the adapter plate is disposed at a distance between 0.1 and 0.3 wavelength, typically 0.25 wavelength from the intersection of the planes in which are respectively located the first and second panels. For 3G applications, the distance is about 38 mm.
  • the adapter plate 31 is of length L "of between 50 and 150 mm, typically 100 mm and of width" "is between 50 and 80 mm, typically 60 mm.
  • the reflective support comprises two lips 41, 42, each located adjacent to the long side of each panel 11, 12.
  • These lips may be disposed inwardly of the substantially dihedral form formed by the diverging panels 11, 12.
  • the support comprises fastening means to an opening, such fastening means are for example suckers 40 and are arranged on the lips 11, 12.
  • lips 11, 12 have dimensions adapted to the fixing of the support on the opening.
  • the length L of the lips 41, 42 is identical to the length L of the long sides of each panel, the width l 'of the lips is in turn between 10 and 30 mm, typically 20 mm.
  • the first panel, the second panel and the bottom plate have a thickness e of between 2 and 10 mm, typically 5 mm.
  • the adapter plate has a thickness e 'which is not necessarily equal to the thickness e of the first panel, the second panel and the bottom plate, between 2 and 10 mm, typically mm.
  • the part of the bottom plate under the adapter plate does not play any role of radio reflector, it can match the plane of the adapter plate for reasons of simplicity of manufacture.
  • the first panel, the second panel, the adapter plate and the bottom plate are made of metallic material.
  • the plate (s) support (s) are not metal material, this to avoid having any influence on the operation of the antennal assembly comprising the reflector support.
  • PETG polyethylene terephthalate
  • This polymer is relatively soft, transparent and UV resistant. Its choice is also dictated by the metallization technology: the metallization of this material is in particular ensured by a very thin metal fabric, consisting of a square mesh of 80 micron wires spaced at 930 microns, offering a transparency greater than 80% .
  • the figure 9 illustrates such a mesh seen from the front 91, side view 91 and seen from below 92.
  • the metal fabric is "melted" in the PETG by a known type of thermoforming process.
  • FIGS. 10a to 10b illustrate a foldable reflective support.
  • the foldable support differs from that presented above in that the support plate 21 ', made of an electrically transparent radio material, is disposed perpendicularly to the plane of symmetry P.
  • This support plate is adapted to receive the radiating source 2, typically a 3G USB key.
  • Such a foldable support obviously has the advantage of being of reduced size.
  • the figure 10a illustrates the foldable support in folded configuration.
  • the figure 10b illustrates the foldable support in unfolded configuration, in particular exposing the metal surfaces which are the panels 11 and 12 and the plate 31.
  • the figure 10c illustrates the foldable support in operational configuration.
  • the figure 10d illustrates a bottom view of the foldable support in operational configuration.
  • the support comprises means for attachment to an opening, such fastening means are for example suckers 40 and are in this case fixed on the support plate 21 '.
  • the reflective support has the effect of improving the transmission / reception performance of a 3G key.
  • the antennal assembly thus comprises a reflective support and a radiating source 2 point or quasi-point.
  • the source of point or quasi-point radiation is defined by a longitudinal axis of symmetry LL '.
  • the support plate of the reflector which is intended to support the radiating source such that the longitudinal axis of symmetry LL 'of the source is in the plane of symmetry of the reflective support.
  • the longitudinal axis of symmetry LL 'of the point or quasi-point radiating source 2 is situated at a distance of between 0.5 and 0.8 wavelength, typically 0.7 wavelength. of the intersection of the planes in which are respectively located the first and second panels of the reflective support.
  • the radiant source is preferably isotropic and is between 8 and 10 mm in length.
  • the antennal assembly produces radiation along the longitudinal plane of symmetry P of the reflective support.
  • the support adaptation plate has for effect of flattening the radiation pattern in the horizontal plane (that is to say the plane of symmetry P of the support). This is called sectoral openness.
  • the radiation is intended for a cellular network which has, by definition, an optimum zone Z situated in a horizontal plane.
  • the radiation of the antenna assembly is independent of the type of 3G key used.
  • the reflector support has been tested and has been placed on a window (see figure 1 ).
  • the Figures 8a and 8b respectively illustrate the radiation pattern in the horizontal plane and the radiation pattern in the vertical plane.
  • the figure 7 illustrates the convention used for the definition of the horizontal plane H and the vertical plane V.
  • the support makes it possible to maintain the quasi-constant directivity in the horizontal plane over an angular sector varying between -60 ° and + 60 °. It should also be noted that the support provides directivity to the radiating source of about 10 dBi.

Abstract

The support (1) has rectangular metal panels (11, 12) placed in a divergent manner with respect to a symmetry plane (P) of the support. A rectangular metal matching plate (31) is placed perpendicular to the plane. The symmetry plane and the matching plate intersect with a longitudinal symmetry axis of the plate. A trapezoidal support plate (21) supports a point or quasi point radiating source (2). The support plate is arranged with respect to the panels, such that a longitudinal symmetry axis of the source is in the symmetry plane.

Description

DOMAINE TECHNIQUE GENERALGENERAL TECHNICAL FIELD

Le domaine de l'invention est celui des antennes de télécommunication, et plus particulièrement celui des antennes pour les réseaux sans fils et notamment les réseaux cellulaires de communication mobile et plus particulièrement ceux de troisième génération (3G) s'appuyant sur la norme UMTS (en anglais, « Universal Mobile Telecommunications System »).The field of the invention is that of telecommunication antennas, and more particularly that of antennas for wireless networks and in particular cellular mobile communication networks and more particularly those of third generation (3G) based on the UMTS standard ( in English, " Universal Mobile Telecommunications System ").

ETAT DE LA TECHNIQUESTATE OF THE ART

Un service proposé par les opérateurs de communication mobile est l'accès mobile au réseau cellulaire 3G via un ordinateur pour se connecter au réseau Internet.A service offered by mobile communication operators is mobile access to the 3G cellular network via a computer to connect to the Internet.

A cet égard, les opérateurs mettent à la disposition des usagers une antenne 3G se présentant habituellement sous la forme d'une clé USB (en anglais « Universal Serial Bus »).In this respect, the operators make available to users a 3G antenna usually in the form of a USB ( Universal Serial Bus ).

Un problème avec ce type de dispositif est que lorsque l'usager se trouve à l'intérieur d'un bâtiment les performances en termes de réception du signal 3G sont limitées et l'usager doit pour améliorer la qualité de réception du signal sortir du bâtiment ou bien déployer des moyens onéreux du type amplification active (répéteurs, pico/micro/macro stations de base).A problem with this type of device is that when the user is inside a building the performance in terms of receiving the 3G signal is limited and the user must to improve the quality of signal reception out of the building or deploy expensive means of the active amplification type (repeaters, pico / micro / macro base stations).

PRESENTATION DE L'INVENTIONPRESENTATION OF THE INVENTION

L'invention permet d'améliorer le bilan de la puissance d'émission/réception d'un signal issu/à destination d'un réseau cellulaire.The invention makes it possible to improve the balance of the transmission / reception power of a signal originating / going to a cellular network.

A cet effet, selon un premier aspect, l'invention concerne un support réflecteur d'une source rayonnante ponctuelle ou quasi-ponctuelle, le support étant défini par un plan de symétrie longitudinal et comprenant : un premier panneau et un second panneau, chaque panneau étant rectangulaire et est disposé de manière divergente par rapport au plan de symétrie ; une plaque d'adaptation rectangulaire disposée perpendiculairement au plan de symétrie, le plan de symétrie et la plaque ayant pour intersection l'axe de symétrie longitudinal de la plaque ; une plaque support destinée à supporter la source rayonnante, la plaque support étant agencée par rapport au premier et au second panneau de telle sorte que l'axe de symétrie longitudinal de la source soit dans le plan de symétrie du support réflecteur.For this purpose, according to a first aspect, the invention relates to a reflective support of a point or quasi-point radiating source, the support being defined by a longitudinal plane of symmetry and comprising: a first panel and a second panel, each panel being rectangular and is disposed divergently with respect to the plane of symmetry; a rectangular adapter plate disposed perpendicularly to the plane of symmetry, the plane of symmetry and the plate having at its intersection the longitudinal axis of symmetry of the plate; a support plate for supporting the radiating source, the support plate being arranged with respect to the first and second panels such that the longitudinal axis of symmetry of the source is in the plane of symmetry of the reflective support.

Le support selon le premier aspect de l'invention est avantageusement complété par les caractéristiques suivantes, prises seules ou en une quelconque de leurs combinaisons techniquement possibles :

  • les panneaux sont en outre disposés de manière à former chacun un angle compris entre 45° et 90° avec le plan de plan de symétrie et de 90° à 180° entre eux ;
  • les panneaux sont en outre disposés de manière à former chacun un angle de 45° avec le plan de plan de symétrie et un angle de 90° entre eux ;
  • chaque grand côté de la plaque d'adaptation est adjacent respectivement au premier panneau et au second panneau ;
  • la plaque support est trapézoïdale et est disposée perpendiculairement au plan de symétrie, chaque côté de la plaque support étant confondu avec respectivement un côté du premier panneau et un côté du second panneau ;
  • la plaque support est disposée perpendiculairement au plan de symétrie ;
  • le support comprend une plaque de fond rectangulaire, la petite arête de la plaque support est confondue avec une petite arête de la plaque de fond ;
  • la plaque d'adaptation est disposée à une distance comprise entre 0,1 et 0,3 longueur d'onde, typiquement 0,25 longueur d'onde de l'intersection des plans dans lesquels sont respectivement situés les premier et second panneaux.
  • le premier panneau, le second panneau et la plaque d'adaptation sont métalliques.
The support according to the first aspect of the invention is advantageously completed by the following features, taken alone or in any of their technically possible combinations:
  • the panels are furthermore arranged so as to each form an angle of between 45 ° and 90 ° with the plane of plane of symmetry and 90 ° to 180 ° between them;
  • the panels are furthermore arranged so as to each form an angle of 45 ° with the plane of plane of symmetry and an angle of 90 ° between them;
  • each large side of the adapter plate is adjacent respectively to the first panel and the second panel;
  • the support plate is trapezoidal and is arranged perpendicularly to the plane of symmetry, each side of the support plate coinciding with one side of the first panel and one side of the second panel respectively;
  • the support plate is arranged perpendicular to the plane of symmetry;
  • the support comprises a rectangular bottom plate, the small edge of the support plate coincides with a small edge of the bottom plate;
  • the adapter plate is disposed at a distance of between 0.1 and 0.3 wavelength, typically 0.25 wavelength of the intersection of the planes in which are located respectively the first and second panels.
  • the first panel, the second panel and the adapter plate are metallic.

Selon un second aspect, l'invention concerne un ensemble antennaire comprenant un support réflecteur selon le premier aspect de l'invention et une source rayonnante ponctuelle ou quasi-ponctuelle définie par un axe de symétrie longitudinal, la plaque support réflecteur étant destinée à supporter la source rayonnante de telle sorte que l'axe de symétrie longitudinal de la source soit dans le plan de symétrie du support réflecteur, l'ensemble antennaire produisant en fonctionnement un rayonnement selon le plan de symétrie longitudinal.According to a second aspect, the invention relates to an antenna assembly comprising a reflective support according to the first aspect of the invention and a point or quasi-point radiating source defined by a longitudinal axis of symmetry, the reflective support plate being intended to support the radiating source so that the longitudinal axis of symmetry of the source is in the plane of symmetry of the reflective support, the antenna assembly producing in operation radiation along the longitudinal plane of symmetry.

Dans l'ensemble selon le second aspect de l'invention, l'axe symétrie longitudinal de la source rayonnante ponctuelle ou quasi-ponctuelle est situé à une distance comprise entre 0,5 et 0,8 longueur d'onde, typiquement 0,7 longueur d'onde de l'intersection des plans dans lesquels sont respectivement situés les premier et second panneaux du support réflecteur.In the assembly according to the second aspect of the invention, the longitudinal symmetry axis of the point or quasi-point radiating source is situated at a distance of between 0.5 and 0.8 wavelength, typically 0.7 wavelength of the intersection of the planes in which are respectively located the first and second panels of the reflective support.

L'ensemble antennaire de l'invention permet d'améliorer la directivité pour échanger avec un réseau cellulaire notamment qui est caractérisé par une ouverture sectorielle dans le plan horizontal, autrement dit une directivité maximale quasi constante dans une plage angulaire donnée dans ce plan.The antennal assembly of the invention makes it possible to improve the directivity to exchange with a cellular network in particular which is characterized by a sectoral opening in the horizontal plane, in other words a quasi-constant maximum directivity in a given angular range in this plane.

Selon un troisième aspect, l'invention concerne un ensemble de communication comprenant un terminal et un ensemble antennaire selon le second aspect de l'invention, l'ensemble étant destiné à échanger des signaux avec des stations de base d'un réseau cellulaire.According to a third aspect, the invention relates to a communication assembly comprising a terminal and an antenna assembly according to the second aspect of the invention, the assembly being intended for exchanging signals with base stations of a cellular network.

PRESENTATION DES FIGURESPRESENTATION OF FIGURES

D'autres caractéristiques et avantages de l'invention ressortiront encore de la description qui suit laquelle est purement illustrative et non limitative et doit être lue en regard des dessins annexés sur lesquels :

  • la figure 1 illustre schématiquement le contexte général de l'invention ;
  • les figures 2a et 2b illustrent un ensemble antennaire selon l'invention ;
  • la figure 3 illustre la structure géométrique de l'ensemble antennaire selon l'invention ;
  • la figure 4 illustre la structure géométrique de la plaque support de l'ensemble antennaire selon l'invention ;
  • la figure 5 illustre une vue de selon un axe perpendiculaire à l'axe longitudinal du support réflecteur selon l'invention ;
  • la figure 6 illustre une vue selon l'axe longitudinal du support réflecteur selon l'invention ;
  • la figure 7 illustre l'ensemble antennaire de l'invention avec la convention utilisée pour le plan horizontal et le plan vertical ;
  • les figures 8a et 8b illustrent respectivement le diagramme de rayonnement de l'ensemble antennaire selon le plan horizontal et le diagramme de rayonnement de l'ensemble antennaire selon le plan vertical ;
  • la figure 9 illustre une vue du maillage utilisé pour le support réflecteur de l'invention.
  • Les figures 10a à 10d illustrent le support de l'invention en configuration pliable.
Other features and advantages of the invention will become apparent from the description which follows, which is purely illustrative and nonlimiting, and should be read with reference to the accompanying drawings in which:
  • the figure 1 schematically illustrates the general context of the invention;
  • the Figures 2a and 2b illustrate an antenna assembly according to the invention;
  • the figure 3 illustrates the geometrical structure of the antenna assembly according to the invention;
  • the figure 4 illustrates the geometric structure of the support plate of the antennal assembly according to the invention;
  • the figure 5 illustrates a view of an axis perpendicular to the longitudinal axis of the reflective support according to the invention;
  • the figure 6 illustrates a view along the longitudinal axis of the reflective support according to the invention;
  • the figure 7 illustrates the antennal assembly of the invention with the convention used for the horizontal plane and the vertical plane;
  • the Figures 8a and 8b respectively illustrate the radiation pattern of the antennal assembly in the horizontal plane and the radiation pattern of the antennal assembly in the vertical plane;
  • the figure 9 illustrates a view of the mesh used for the reflective support of the invention.
  • The Figures 10a to 10d illustrate the support of the invention in foldable configuration.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

On décrit ci-dessus une application au réseau cellulaire 3G avec une utilisation dans la bande de l'UMTS 2100 à savoir la bande fréquentielle 1900 MHz - 2170 MHz. On précise que dans ce qui suit la notion de longueur d'onde est considérée par rapport à la fréquence centrale de la bande d'utilisation.An application to the 3G cellular network with use in the UMTS 2100 band namely the 1900 MHz - 2170 MHz frequency band is described above. It is specified that in the following the notion of wavelength is considered with respect to the central frequency of the band of use.

Contexte généralGeneral context

La figure 1 illustre une habitation 1000 dans laquelle un ensemble de communication est disposé.The figure 1 illustrates a dwelling 1000 in which a communication set is arranged.

L'ensemble de communication comprend un terminal 100 de type 3G et est connecté à un réseau cellulaire 3G via une source rayonnante ponctuelle ou quasi-ponctuelle, par exemple une clé 3G USB (non représentée).The communication set comprises a 3G type terminal 100 and is connected to a 3G cellular network via a point or quasi-point radiating source, for example a USB 3G key (not shown).

Le réseau 3G est diffusé par plusieurs stations de base B1, B2, B3, B4 d'un réseau cellulaire. Tel que connu, pour un terminal mobile se situant sur le plan de l'ouvrant 10, par exemple une fenêtre ou une baie vitrée, il existe un secteur privilégié favorable aux communications entre le terminal et les stations de base se situant dans une zone Z où se trouvent une ou plusieurs stations de base.The 3G network is broadcast by several base stations B1, B2, B3, B4 of a cellular network. As known, for a mobile terminal located on the plane of the opening 10, for example a window or a bay window, there is a preferred area favorable to communications between the terminal and the base stations located in a zone Z where there are one or more base stations.

Il convient de façon avantageuse d'avoir une directivité dans laquelle l'émission/réception des signaux 3G est optimale.It is advantageous to have a directivity in which the transmission / reception of 3G signals is optimal.

Afin d'améliorer la qualité d'émission/réception du signal de l'intérieur de l'habitation vers la zone de directivité optimale du réseau cellulaire, la clé 3G est fixée sur un support réflecteur 1 disposant d'une directivité orientée vers la zone Z et qui permet d'améliorer la qualité d'émission/réception du signal émis/reçu. Le support réflecteur 1 est de préférence disposé sur un ouvrant 10 par exemple une fenêtre ou une baie vitrée.In order to improve the quality of transmission / reception of the signal from the interior of the dwelling to the optimal directivity zone of the cellular network, the 3G key is fixed on a reflector support 1 having a directivity oriented towards the zone Z and which improves the quality of transmission / reception of the transmitted / received signal. The reflector support 1 is preferably disposed on an opening 10 for example a window or a bay window.

L'amélioration se traduit par une amplification du signal émis/reçu dans la zone Z de directivité optimale.The improvement results in an amplification of the transmitted / received signal in the zone Z of optimal directivity.

Description générale d'un ensemble antennaireGeneral description of an antennal set

Les figures 2a et 2b illustrent de manière générale un ensemble antennaire comprenant un support réflecteur 1 et une source rayonnante 2 ponctuelle ou quasi-ponctuelle. L'ensemble illustré sur la figure 2b comprend un support pliable.The Figures 2a and 2b generally illustrate an antennal assembly comprising a reflector support 1 and a point source radiating 2 or quasi-point. The set illustrated on the figure 2b includes a foldable stand.

La figure 3 illustre de manière plus détaillée la structure géométrique de l'ensemble antennaire de la figure 2a.The figure 3 illustrates in more detail the geometrical structure of the antenna assembly of the figure 2a .

Plus précisément c'est la structure du support réflecteur qui permet d'obtenir les améliorations ci-dessus mentionnées.More precisely, it is the structure of the reflective support that makes it possible to obtain the improvements mentioned above.

Description détaillée du support réflecteurDetailed description of the reflective support

Le support réflecteur est défini par un plan de symétrie P longitudinal et comprend une plaque de fond 13 rectangulaire ; un premier panneau 11 et un second panneau 12.The reflective support is defined by a longitudinal plane of symmetry P and comprises a rectangular bottom plate 13; a first panel 11 and a second panel 12.

Chaque panneau 11, 12 est rectangulaire et est disposé de manière divergente par rapport au plan de symétrie P.Each panel 11, 12 is rectangular and is disposed divergently with respect to the plane of symmetry P.

Les panneaux sont en particulier disposés de manière à former chacun un angle de 45° avec le plan de symétrie P et un angle de 90° entre eux.The panels are in particular arranged so as to each form an angle of 45 ° with the plane of symmetry P and an angle of 90 ° between them.

Le grand côté de chaque panneau est de longueur L comprise entre 100 et 250 mm, typiquement 200 mm et la largeur est comprise entre 100 et 200, typiquement 141 mm.The long side of each panel is of length L between 100 and 250 mm, typically 200 mm and the width is between 100 and 200, typically 141 mm.

La plaque de fond 13 est de longueur L identique à la longueur L des grands côtés des panneaux et la largeur ℓ"' de la plaque de fond est comprise entre 25 et 50 mm, typiquement 40 mm.The bottom plate 13 is of length L identical to the length L of the long sides of the panels and the width ℓ "'of the bottom plate is between 25 and 50 mm, typically 40 mm.

Le support réflecteur comprend en outre une plaque support 21 trapézoïdale disposée perpendiculairement au plan de symétrie P. On note que l'on défini la plaque trapézoïdale par une petite arête, une grande arête et deux côtés. La plaque support 21 est disposée de telle sorte que la petite arête de la plaque support est confondue avec une petite arête de la plaque de fond et chaque côté de la plaque support est confondu avec respectivement un côté du premier panneau et un côté du second panneau.The reflector support further comprises a trapezoidal support plate 21 arranged perpendicular to the plane of symmetry P. It is noted that the trapezoidal plate is defined by a small edge, a large edge and two sides. The support plate 21 is arranged such that the small edge of the support plate coincides with a small edge of the base plate and each side of the support plate coincides with one side of the first panel and one side of the second panel, respectively. .

Une seconde plaque support (non représentée) peut être aussi envisagée. Dans ce cas elle est disposée de la même manière que l'autre mais à l'extrémité opposée du support réflecteur.A second support plate (not shown) can also be envisaged. In this case it is arranged in the same way as the other but at the opposite end of the reflector support.

Les dimensions de la plaque support sont adaptées à celles des panneaux 11, 12. La figure 4 illustre la structure géométrique de la plaque support.The dimensions of the support plate are adapted to those of the panels 11, 12. The figure 4 illustrates the geometric structure of the support plate.

Le support réflecteur comprend une plaque d'adaptation 31 disposée parallèlement à la plaque de fond 13.The reflector support comprises an adapter plate 31 arranged parallel to the bottom plate 13.

La plaque d'adaptation est disposée à une distance comprise entre 0,1 et 0,3 longueur d'onde, typiquement 0,25 longueur d'onde de l'intersection des plans dans lesquels sont respectivement situés les premier et second panneaux. Pour les applications 3G, la distance est d'environ 38 mm.The adapter plate is disposed at a distance between 0.1 and 0.3 wavelength, typically 0.25 wavelength from the intersection of the planes in which are respectively located the first and second panels. For 3G applications, the distance is about 38 mm.

La plaque d'adaptation 31 est de longueur L" comprise entre 50 et 150 mm, typiquement 100 mm et de largeur ℓ"est comprise entre 50 et 80 mm, typiquement 60 mm.The adapter plate 31 is of length L "of between 50 and 150 mm, typically 100 mm and of width" "is between 50 and 80 mm, typically 60 mm.

Afin de pouvoir fixer le support réflecteur sur un ouvrant notamment, le support réflecteur comprend deux lèvres 41, 42, chacune située de manière adjacente au grand côté de chaque panneau 11, 12.In order to be able to fix the reflective support on a particular opening, the reflective support comprises two lips 41, 42, each located adjacent to the long side of each panel 11, 12.

Ces lèvres peuvent être disposées vers l'intérieur de la forme sensiblement en dièdre formée par les panneaux divergents 11, 12.These lips may be disposed inwardly of the substantially dihedral form formed by the diverging panels 11, 12.

Le support comprend des moyens de fixation à un ouvrant, de tels moyens de fixation sont par exemple des ventouses 40 et sont disposés sur les lèvres 11, 12.The support comprises fastening means to an opening, such fastening means are for example suckers 40 and are arranged on the lips 11, 12.

Ces lèvres 11, 12 ont des dimensions adaptées à la fixation du support sur l'ouvrant. De manière avantageuse, la longueur L des lèvres 41, 42 est identique à la longueur L des grands côtés de chaque panneau, la largeur ℓ' des lèvres est quant à elle comprise entre 10 et 30 mm, typiquement 20 mm.These lips 11, 12 have dimensions adapted to the fixing of the support on the opening. Advantageously, the length L of the lips 41, 42 is identical to the length L of the long sides of each panel, the width ℓ 'of the lips is in turn between 10 and 30 mm, typically 20 mm.

Le premier panneau, le second panneau et la plaque de fond présentent une épaisseur e comprise entre 2 et 10 mm typiquement 5 mm.The first panel, the second panel and the bottom plate have a thickness e of between 2 and 10 mm, typically 5 mm.

On note que la plaque d'adaptation a une épaisseur e' qui n'est pas nécessairement égale à l'épaisseur e du premier panneau, du second panneau et de la plaque de fond, comprise entre 2 et 10 mm, typiquement 5 mm. La partie de la plaque de fond sous la plaque d'adaptation ne jouant aucun rôle de réflecteur radioélectrique, elle peut épouser le plan de la plaque d'adaptation pour des raisons de simplicité de fabrication.It is noted that the adapter plate has a thickness e 'which is not necessarily equal to the thickness e of the first panel, the second panel and the bottom plate, between 2 and 10 mm, typically mm. The part of the bottom plate under the adapter plate does not play any role of radio reflector, it can match the plane of the adapter plate for reasons of simplicity of manufacture.

Le premier panneau, le second panneau, la plaque d'adaptation et la plaque de fond sont en matériau métallique. En revanche, la ou les plaque(s) support ne sont pas en matériau métallique, ceci pour éviter d'avoir une quelconque influence sur le fonctionnement de l'ensemble antennaire comprenant le support réflecteur.The first panel, the second panel, the adapter plate and the bottom plate are made of metallic material. In contrast, the plate (s) support (s) are not metal material, this to avoid having any influence on the operation of the antennal assembly comprising the reflector support.

Afin de minimiser l'impact visuel du support directif, celui-ci a été réalisé en Polyethylene téréphtalate (PETG). Ce polymère est relativement souple, transparent et résistant aux UV. Son choix est aussi dicté par la technologie de métallisation : la métallisation de ce matériau est en particulier assurée par un tissu métallique très fin, constitué d'un maillage carré de fils de 80 microns espacés de 930 microns, offrant une transparence supérieure à 80 %. La figure 9 illustre un tel maillage vu de face 91, vue de côté 91 et vu de dessous 92. Le tissu métallique est « fondu » dans la PETG par un procédé de thermoformage de type connu.In order to minimize the visual impact of the directional support, it was made of polyethylene terephthalate (PETG). This polymer is relatively soft, transparent and UV resistant. Its choice is also dictated by the metallization technology: the metallization of this material is in particular ensured by a very thin metal fabric, consisting of a square mesh of 80 micron wires spaced at 930 microns, offering a transparency greater than 80% . The figure 9 illustrates such a mesh seen from the front 91, side view 91 and seen from below 92. The metal fabric is "melted" in the PETG by a known type of thermoforming process.

Support pliableFoldable stand

Les figures 10a à 10b illustrent un support réflecteur pliable. Dans cette configuration pliable, le support pliable diffère de celui présenté précédemment en ce que la plaque support 21', constituée d'un matériau radio électriquement transparent, est disposée perpendiculairement au plan de symétrie P. Cette plaque support est adaptée à recevoir la source rayonnante 2, typiquement une clé USB 3G.The Figures 10a to 10b illustrate a foldable reflective support. In this foldable configuration, the foldable support differs from that presented above in that the support plate 21 ', made of an electrically transparent radio material, is disposed perpendicularly to the plane of symmetry P. This support plate is adapted to receive the radiating source 2, typically a 3G USB key.

Un tel support pliable, présente évidemment l'avantage d'être d'un encombrement réduit.Such a foldable support obviously has the advantage of being of reduced size.

La figure 10a illustre le support pliable en configuration pliée. La figure 10b illustre le support pliable en configuration dépliée, exposant notamment les surfaces métalliques qui sont les panneaux 11 et 12 et la plaque d'adaptation 31. La figure 10c illustre le support pliable en configuration opérationnelle.The figure 10a illustrates the foldable support in folded configuration. The figure 10b illustrates the foldable support in unfolded configuration, in particular exposing the metal surfaces which are the panels 11 and 12 and the plate 31. The figure 10c illustrates the foldable support in operational configuration.

La figure 10d illustre une vue de dessous du support pliable en configuration opérationnelle.The figure 10d illustrates a bottom view of the foldable support in operational configuration.

Comme précédemment le support comprend des moyens de fixation à un ouvrant, de tels moyens de fixation sont par exemple des ventouses 40 et sont dans ce cas fixées sur la plaque support 21'.As previously the support comprises means for attachment to an opening, such fastening means are for example suckers 40 and are in this case fixed on the support plate 21 '.

Description détaillée de l'ensemble antennaireDetailed description of the antennal ensemble

Comme on l'a mentionné, le support réflecteur a pour effet d'améliorer les performances d'émission/réception d'une clé 3G.As mentioned, the reflective support has the effect of improving the transmission / reception performance of a 3G key.

L'ensemble antennaire comprend donc un support réflecteur et une source rayonnante 2 ponctuelle ou quasi-ponctuelle.The antennal assembly thus comprises a reflective support and a radiating source 2 point or quasi-point.

La source de rayonnement ponctuelle ou quasi-ponctuelle est définie par un axe de symétrie longitudinal LL'.The source of point or quasi-point radiation is defined by a longitudinal axis of symmetry LL '.

De manière préférée c'est la plaque support du réflecteur qui est destinée à supporter la source rayonnante de telle sorte que l'axe de symétrie longitudinal LL' de la source soit dans le plan de symétrie du support réflecteur.Preferably, it is the support plate of the reflector which is intended to support the radiating source such that the longitudinal axis of symmetry LL 'of the source is in the plane of symmetry of the reflective support.

De manière plus précise, l'axe de symétrie longitudinal LL' de la source rayonnante 2 ponctuelle ou quasi-ponctuelle est situé à une distance comprise entre 0,5 et 0,8 longueur d'onde, typiquement 0,7 longueur d'onde de l'intersection des plans dans lesquels sont respectivement situés les premier et second panneaux du support réflecteur.More precisely, the longitudinal axis of symmetry LL 'of the point or quasi-point radiating source 2 is situated at a distance of between 0.5 and 0.8 wavelength, typically 0.7 wavelength. of the intersection of the planes in which are respectively located the first and second panels of the reflective support.

La source rayonnante est de préférence isotrope et est de longueur comprise entre 8 et 10 mm.The radiant source is preferably isotropic and is between 8 and 10 mm in length.

En effet, le but est qu'en fonctionnement, l'ensemble antennaire produise un rayonnement selon le plan de symétrie longitudinal P du support réflecteur.Indeed, the purpose is that in operation, the antennal assembly produces radiation along the longitudinal plane of symmetry P of the reflective support.

En termes d'optimisation du diagramme de rayonnement de l'ensemble antennaire, il est à noter que la plaque d'adaptation du support a pour effet d'aplatir le diagramme de rayonnement dans le plan horizontal (c'est-à-dire le plan de symétrie P du support). On parle alors d'ouverture sectorielle.In terms of optimization of the radiation pattern of the antennal assembly, it should be noted that the support adaptation plate has for effect of flattening the radiation pattern in the horizontal plane (that is to say the plane of symmetry P of the support). This is called sectoral openness.

On rappelle que le rayonnement est à destination d'un réseau cellulaire qui présente par définition une zone optimale Z située dans un plan horizontale.It is recalled that the radiation is intended for a cellular network which has, by definition, an optimum zone Z situated in a horizontal plane.

Le rayonnement de l'ensemble antennaire est indépendant du type de clé 3G utilisé.The radiation of the antenna assembly is independent of the type of 3G key used.

Performancesperformances

Le support réflecteur a été testé et a été disposé sur une fenêtre (voir figure 1).The reflector support has been tested and has been placed on a window (see figure 1 ).

Les figures 8a et 8b illustrent respectivement le diagramme de rayonnement dans le plan horizontal et le diagramme de rayonnement dans le plan vertical. La figure 7 illustre la convention utilisée pour la définition du plan horizontal H et du plan vertical V.The Figures 8a and 8b respectively illustrate the radiation pattern in the horizontal plane and the radiation pattern in the vertical plane. The figure 7 illustrates the convention used for the definition of the horizontal plane H and the vertical plane V.

Il est à remarquer que le support permet de maintenir la directivité quasi-constante dans le plan horizontal sur un secteur angulaire variant entre -60° et +60°. Il est aussi à remarquer que le support procure une directivité à la source rayonnante d'environ 10 dBi.It should be noted that the support makes it possible to maintain the quasi-constant directivity in the horizontal plane over an angular sector varying between -60 ° and + 60 °. It should also be noted that the support provides directivity to the radiating source of about 10 dBi.

Claims (12)

Support réflecteur d'une source rayonnante ponctuelle ou quasi-ponctuelle, le support étant défini par un plan de symétrie (P) longitudinal et comprenant : - un premier panneau (11) et un second panneau (12), chaque panneau (11, 12) étant rectangulaire et est disposé de manière divergente par rapport au plan de symétrie (P) ; - une plaque d'adaptation (31) rectangulaire disposée perpendiculairement au plan de symétrie (P), le plan de symétrie et la plaque ayant pour intersection l'axe de symétrie longitudinal de la plaque (31) - une plaque support (21, 21') destinée à supporter la source rayonnante, la plaque support (21, 21') étant agencée par rapport au premier et au second panneau de telle sorte que l'axe de symétrie longitudinal de la source soit dans le plan de symétrie (P) du support réflecteur ; - une plaque de fond (13) disposée parallèlement à la plaque d'adaptation (31) et disposée de manière telle que la petite arête de la plaque support (21) est confondue avec une petite arête de la plaque de fond (13). Reflector support of a point or quasi-point radiating source, the support being defined by a longitudinal plane of symmetry (P) and comprising: - a first panel (11) and a second panel (12), each panel (11, 12) being rectangular and is disposed divergently with respect to the plane of symmetry (P); - a rectangular adapter plate (31) arranged perpendicular to the plane of symmetry (P), the plane of symmetry and the plate having the longitudinal axis of symmetry of the plate (31) intersect a support plate (21, 21 ') intended to support the radiating source, the support plate (21, 21') being arranged with respect to the first and second panels so that the longitudinal axis of symmetry of the source is in the plane of symmetry (P) of the reflective support; - a bottom plate (13) arranged parallel to the adapter plate (31) and arranged such that the small edge of the support plate (21) coincides with a small edge of the bottom plate (13). Support réflecteur selon la revendication 1 dans lequel les panneaux (11, 12) sont en outre disposés de manière à former chacun un angle compris entre 45° et 90° avec le plan de plan de symétrie (P) et de 90° à 180° entre eux.Reflector support according to claim 1 wherein the panels (11, 12) are furthermore arranged so as to each form an angle of between 45 ° and 90 ° with the plane of plane of symmetry (P) and from 90 ° to 180 ° between them. Support réflecteur selon la revendication 1 dans lequel les panneaux (11, 12) sont en outre disposés de manière à former chacun un angle de 45° avec le plan de plan de symétrie et un angle de 90° entre eux.Reflector support according to claim 1 wherein the panels (11, 12) are further arranged to each form an angle of 45 ° with the plane of plane of symmetry and an angle of 90 ° between them. Support réflecteur selon l'une des revendications 1 à 3 dans lequel chaque grand côté de la plaque (31) d'adaptation est adjacent respectivement au premier panneau (11) et au second panneau (12).Reflector support according to one of claims 1 to 3 wherein each large side of the plate (31) of adaptation is adjacent respectively to the first panel (11) and the second panel (12). Support selon l'une des revendications 1 à 4 dans lequel la plaque support (21) est trapézoïdale et est disposée perpendiculairement au plan de symétrie (P), chaque côté de la plaque support (21) étant confondu avec respectivement un côté du premier panneau et un côté du second panneau.Support according to one of claims 1 to 4 wherein the support plate (21) is trapezoidal and is arranged perpendicularly to the plane of symmetry (P), each side of the support plate (21) coinciding with respectively one side of the first panel and one side of the second panel. Support selon l'une des revendications 1 à 4 dans lequel la plaque support (21') est disposée perpendiculairement au plan de symétrie (P).Support according to one of claims 1 to 4 wherein the support plate (21 ') is disposed perpendicular to the plane of symmetry (P). Support réflecteur selon l'une des revendications 1 à 6 dans lequel la plaque de fond (13) est rectangulaire.Reflector support according to one of claims 1 to 6 wherein the bottom plate (13) is rectangular. Support réflecteur selon l'une des revendications précédentes dans lequel la plaque d'adaptation (31) est disposée à une distance comprise entre 0,1 et 0,3 longueur d'onde, typiquement 0,25 longueur d'onde de l'intersection des plans dans lesquels sont respectivement situés les premier et second panneaux.Reflector support according to one of the preceding claims, in which the adapter plate (31) is arranged at a distance of between 0.1 and 0.3 wavelength, typically 0.25 wavelength of the intersection. plans in which are respectively located the first and second panels. Support réflecteur selon l'une des revendications précédentes dans lequel le premier panneau, le second panneau et la plaque d'adaptation sont métalliques.Reflector support according to one of the preceding claims wherein the first panel, the second panel and the adapter plate are metallic. Ensemble antennaire comprenant un support réflecteur (1) selon l'une des revendications 6 à 9 et une source rayonnante (2) ponctuelle ou quasi-ponctuelle définie par un axe de symétrie longitudinal (LL'), la plaque support réflecteur étant destinée à supporter la source rayonnante de telle sorte que l'axe de symétrie longitudinal de la source soit dans le plan de symétrie du support réflecteur, l'ensemble antennaire produisant en fonctionnement un rayonnement selon le plan de symétrie longitudinal.Antenna assembly comprising a reflector support (1) according to one of claims 6 to 9 and a point or quasi-point radiating source (2) defined by a longitudinal axis of symmetry (LL '), the reflector support plate being intended to support the radiating source so that the longitudinal axis of symmetry of the source is in the plane of symmetry of the reflective support, the antennal assembly producing in operation radiation according to the longitudinal plane of symmetry. Ensemble antennaire selon la revendication 10 dans lequel l'axe de symétrie longitudinal (LL') de la source rayonnante (2) ponctuelle ou quasi-ponctuelle est situé à une distance comprise entre 0,5 et 0,8 longueur d'onde, typiquement 0,7 longueur d'onde de l'intersection des plans dans lesquels sont respectivement situés les premier et second panneaux du support réflecteur.Antenna assembly according to claim 10 wherein the longitudinal axis of symmetry (LL ') of the point or quasi-point radiating source (2) is at a distance between 0.5 and 0.8 wavelength, typically 0.7 wavelength of the intersection of the planes in which are respectively located the first and second panels of the reflective support. Ensemble de communication comprenant un terminal d'accès à un réseau cellulaire et un ensemble antennaire selon l'une des revendications 10 à 11, l'ensemble étant destiné à échanger des signaux avec des stations de base du réseau cellulaire.Communication assembly comprising a terminal for access to a cellular network and an antenna assembly according to one of Claims 10 to 11, the assembly being intended for exchanging signals with base stations of the cellular network.
EP10178781A 2009-09-24 2010-09-23 Directional support such as a reflector with a sectoral pattern for a 3G mobile terminal Withdrawn EP2309598A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0956593A FR2950483B1 (en) 2009-09-24 2009-09-24 SECTORAL DIAGRAM TYPE REFLECTOR TYPE REFERENCE GUIDE FOR 3G MOBILE TERMINAL

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EP2309598A2 true EP2309598A2 (en) 2011-04-13
EP2309598A3 EP2309598A3 (en) 2012-10-24

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Publication number Priority date Publication date Assignee Title
US6320509B1 (en) * 1998-03-16 2001-11-20 Intermec Ip Corp. Radio frequency identification transponder having a high gain antenna configuration
WO2002097923A1 (en) * 2001-04-28 2002-12-05 Anyans Corner antenna
US6977624B1 (en) * 2003-10-17 2005-12-20 Szente Pedro A Antenna directivity enhancer
TWI286399B (en) * 2004-03-17 2007-09-01 Arcadyan Technology Corp Antenna apparatus having reflector

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FR2950483A1 (en) 2011-03-25
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