EP2750245B1 - Cross-polarised panel antenna system with variable electrical tilt - Google Patents

Cross-polarised panel antenna system with variable electrical tilt Download PDF

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Publication number
EP2750245B1
EP2750245B1 EP12306677.1A EP12306677A EP2750245B1 EP 2750245 B1 EP2750245 B1 EP 2750245B1 EP 12306677 A EP12306677 A EP 12306677A EP 2750245 B1 EP2750245 B1 EP 2750245B1
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Prior art keywords
panel antenna
antenna system
ports
cross
polarization
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German (de)
French (fr)
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EP2750245A1 (en
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Stéphane Dauguet
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Nokia Shanghai Bell Co Ltd
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Alcatel Lucent Shanghai Bell Co Ltd
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    • 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
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation

Definitions

  • the present invention relates to the field of wireless telecommunications networks using the MIMO technique (for "Multiple-Input Multiple-Output").
  • MIMO multiple-Input Multiple-Output
  • VET cross-polarized and variable-tilt panel antenna system having a plurality of transmit / receive ports for use in a base station of a mobile telecommunication network.
  • a public land mobile network PLMN is a telecommunication network that allows authorized users to access different services (telephony, messaging, data transmission, broadcasting of audiovisual content ...) in mobility situation from portable terminals.
  • Wireless telecommunication networks using the MIMO technique enable long-range and high-speed data transfer.
  • a MIMO network uses several antennas at both the transmitter and the receiver.
  • receiving multi-channel spatial diversity reception makes it possible to increase the signal-to-noise ratio of the transmission by virtue of the diversity gain. It is to use the plurality of paths created by the environment to simultaneously receive the same message on different antennas. The signals received on each of the receiving antennas are then re-phased and summed coherently.
  • the MIMO antenna array comprising several antennas on transmission and on reception, is used to orient and control the radio wave beam. to create constructive and / or destructive lobes and optimize transmission between the transmitter and the target.
  • VET Variable Electrical Tilt
  • RET Remote Electrical tilt control device
  • the traditional architecture of a four-port VET cross-polarized and variable-tilt panel antenna system consists, for example, of two traditional cross-polarized (+ 45 ° and -45 °) cross-polarized panel unit antennas with VET variable electrical inclination. each having an RX receive port and a TX / RX transmit / receive port. Each of these unitary panel antennas is associated with a remote electrical tilt control unit RET for individually controlling the tilt parameters of each of the unitary panel antennas respectively.
  • the values of the inclination parameters are imposed independently for each of the unitary panel antennas via each associated remote electrical tilt control unit RET. The value of the inclination is therefore identical for the two + 45 ° and -45 ° polarizations of the same unitary panel antenna.
  • the present invention aims to overcome these two main disadvantages of the prior art by providing a panel antenna system architecture that offers an additional degree of freedom in the implementation of advanced antenna techniques, such as MIMO and MIMO + beamforming, using VET cross-polarized and variable-tilt panel antenna systems with at least four ports, to help improve the performance of the network to which it belongs.
  • the object of the present invention is a cross-polarized, variable-inclination panel antenna system comprising a plurality of ports, comprising at least two unitary panel antennas, each having two ports of different polarization and two sets of aligned radiating elements, and at least two mechanical interfaces connected to the supply network of the radiating elements of each polarity.
  • Each mechanical interface is connected to the ports of the same polarity respectively belonging to the first unitary panel antenna and the second unitary panel antenna.
  • This architecture for a four-port VET cross-polarized and variable-tilt panel antenna system is equipped with two remote electrical tilt control units RET where each of these RET control units respectively control the +45 polarization. ° of the two unitary panel antennas on the one hand, and the -45 ° polarization of the two unitary panel antennas on the other hand.
  • each mechanical interface is connected to an electrical tilt control unit remote from this polarity.
  • the remote electrical tilt control unit RET is a component which is connected to a mechanical interface ensuring the transition between this component and the device which makes it possible to control electromechanically the variable electrical inclination of the antenna. modifying the phases of the supply network of the radiating elements belonging to each of the polarizations.
  • This panel antenna system has many advantages over the prior art.
  • this panel antenna system makes it possible to improve the decoupling parameters between the TX / RX and RX ports of the same unitary panel antenna, to allow a precise adjustment of the decoupling between the ports. It gives operators more flexibility by allowing them to better adjust the decoupling between the TX / RX and RX ports of this panel antenna system,
  • this panel antenna system allows the introduction of vertical sectoring in the cell covered by the transmitter, by differentiating the TX / RX coverage of the RX coverage by adjusting a different inclination by means of each one.
  • Remote Tilt Control Units RET It improves system performance in MIMO and MIMO + beamforming modes by providing the ability to apply different tilt configurations to the beams formed in reception. This adds to the diversity of polarization between these beams, a diversity linked to the vertical sectoring of the cell covered by the transmitter.
  • the panel antenna system 1 comprises two unitary panel antennas 2A and 2B each comprising two sets of aligned radiating elements.
  • Each radiating element of each unitary panel antenna 2A, 2B is powered by a branch 3A, 3B of a supply network 4A, 4B for the -45 ° polarization and a supply network 5A, 5B for the polarization + 45 ° respectively
  • the radiating elements are aligned and fixed on a reflector which can be common.
  • the first 2A unitary panel antenna has two ports, a TX / RX 6A -45 ° polarization port for reception and transmission, and a + 45 ° polarization RX 7A port for receiving.
  • the TX / RX port 6A is connected to the power supply 4A which controls the variable inclination of the -45 ° polarity of the antenna 2A.
  • the RX 7A port is connected to the 5A power supply that drives the variable inclination of the + 45 ° polarity of the 2A antenna .
  • the second unitary panel antenna 2B has two ports, a TX / RX port 6B with -45 ° polarization for reception and transmission, and a + 45 ° polarization RX 7B port for reception.
  • the TX / RX port 6B is connected to the power supply 4B which controls the variable inclination of the -45 ° polarity of the antenna 2B.
  • the RX 7B port is connected to the power supply 5B which controls the variable inclination of the + 45 ° polarity of the antenna 2B.
  • the TX / RX ports 6A, 6B are connected by means of a mechanical interface 8A belonging to the panel antenna system 1, and the RX ports 7A , 7B are connected by means of a mechanical interface 8B.
  • Two remote electrical tilt control units RET 9 and 10 are respectively connected to the mechanical interfaces 8A and 8B.
  • a first remote electrical tilt control unit RET 9 is connected to the OMC operation and maintenance center by an analog cable 11 and a second remote electrical tilt control unit RET 10 is connected to the OMC center by an analog cable 12.
  • the first remote control unit RET 9 controls the TX / RX port 6A of -45 ° polarization of the first unitary panel antenna 2A and the TX / RX port 6B of -45 ° polarization of the second antenna unitary panel 2B.
  • the second remote control unit RET 10 controls the + 45 ° polarization port RX 7A of the first unitary panel antenna 2A and the + 45 ° polarization port RX 7B of the second unitary panel antenna 2B.
  • This panel antenna system thus offers the possibility of applying a different inclination to the two TX / RX and RX reception beams for each antenna in case of vertical sectorization, thus giving another dimension to the decoupling between the polarizations.
  • This panel antenna system improves the decoupling between the four RX ports in the VET cross-polarized and variable-tilt panel antenna system by combining spatial segmentation, polarization and vertical which is achieved via different inclination settings for the implementation of advanced antenna techniques such as diversity in four-way reception, MIMO and MIMO + beam forming.
  • the change made to the antenna consists in mechanically connecting the power supply networks 4A, 4B and 5A, 5B, controlling the variable electrical inclination VET of the same polarization of the unitary panel antenna 2A on the one hand and secondly of the unitary panel antenna 2B, by means of mechanical interfaces 8A, 8B included in the panel antenna system 1.
  • This connection allows simultaneous control of the RF radio frequency components ensuring the control of the electrical inclination.
  • Each of the remote electrical inclination control units RET 9 and 10 is thus connected, via one of these mechanical interfaces 8A and 8B respectively, to the ports of the same polarization 6A, 6B on the one hand and to the ports of the same polarization 7A, 7B on the other hand of each of the unitary panel antennas 2A and 2B.
  • the present invention is not limited to the described embodiments, but it is capable of many variants accessible to those skilled in the art without departing from the spirit of the invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Description

La présente invention se rapporte au domaine des réseaux de télécommunication sans fil utilisant la technique MIMO (pour « Multiple-Input Multiple-Output » en anglais). Elle concerne en particulier un système d'antenne panneau à polarisation croisée et inclinaison électrique variable VET comportant plusieurs ports de transmission / réception destiné à être utilisé dans une station de base d'un réseau de télécommunication mobile.The present invention relates to the field of wireless telecommunications networks using the MIMO technique (for "Multiple-Input Multiple-Output"). In particular, it relates to a VET cross-polarized and variable-tilt panel antenna system having a plurality of transmit / receive ports for use in a base station of a mobile telecommunication network.

Un réseau mobile terrestre public PLMN (pour « Public Land Mobile Network » en anglais) est un réseau de télécommunication qui permet aux utilisateurs autorisés d'accéder à différents services (téléphonie, messagerie, transmissions de données, diffusions de contenus audiovisuels...) en situation de mobilité à partir de terminaux portatifs. Les réseaux de télécommunication sans fil utilisant la technique MIMO permettent des transferts de données à longue portée et à grande vitesse. Un réseau MIMO utilise plusieurs antennes tant au niveau de l'émetteur que du récepteur.A public land mobile network PLMN (PLMN) is a telecommunication network that allows authorized users to access different services (telephony, messaging, data transmission, broadcasting of audiovisual content ...) in mobility situation from portable terminals. Wireless telecommunication networks using the MIMO technique enable long-range and high-speed data transfer. A MIMO network uses several antennas at both the transmitter and the receiver.

Différents principes ont été mis en oeuvre afin d'augmenter le débit du réseau. Par exemple la réception en diversité spatiale à plusieurs voies de réception permet d'augmenter le rapport signal / bruit de la transmission grâce au gain de diversité. Il s'agit d'utiliser la pluralité de trajets créés par l'environnement pour réceptionner simultanément un même message sur différentes antennes. Les signaux reçus sur chacune des antennes de réception sont ensuite remis en phase et sommés de façon cohérente. Dans le système utilisant la formation de faisceau (« Beamforming » en anglais) par exemple encore, le réseau d'antenne MIMO, comportant plusieurs antennes à l'émission et à la réception, est utilisé pour orienter et contrôler le faisceau d'onde radio afin de créer des lobes constructifs et/ou destructifs et d'optimiser la transmission entre l'émetteur et la cible. Ces techniques de formation de faisceau permettent d'étendre une couverture radio et de limiter les interférences entre utilisateurs.Different principles have been implemented to increase the network throughput. For example, receiving multi-channel spatial diversity reception makes it possible to increase the signal-to-noise ratio of the transmission by virtue of the diversity gain. It is to use the plurality of paths created by the environment to simultaneously receive the same message on different antennas. The signals received on each of the receiving antennas are then re-phased and summed coherently. In the system using beamforming, for example, the MIMO antenna array, comprising several antennas on transmission and on reception, is used to orient and control the radio wave beam. to create constructive and / or destructive lobes and optimize transmission between the transmitter and the target. These beamforming techniques extend radio coverage and limit interference between users.

Pour améliorer le débit du réseau, on a introduit des techniques d'antennes avancées (diversité de polarisation, MIMO, formation de faisceau) pouvant s'appliquer à un système d'antenne panneau à polarisation croisée et inclinaison électrique variable dit VET (pour « Variable Electrical Tilt » en anglais) comportant plusieurs ports de réception RX. La plupart des systèmes d'antennes installés aujourd'hui sur les réseaux de télécommunication sans fil sont à inclinaison électrique variable et équipés d'unités de contrôle de l'inclinaison électrique à distance RET (pour « Remote Electrical Tilt » en anglais) permettant de piloter à distance les paramètres d'inclinaison d'un système d'antenne directement via le centre d'opération et de maintenance OMC (pour « Operation and Maintenance Center » en anglais) de l'opérateur.To improve the network throughput, advanced antenna techniques (polarization diversity, MIMO, beamforming) have been introduced that can be applied to a cross-polarized and variable electrical tilt panel antenna system known as VET (for Variable Electrical Tilt "with multiple RX receive ports. Most antenna systems installed today in wireless telecommunication networks have variable electrical tilt and are equipped with remote electrical tilt control device RET (for "Remote Electrical Tilt" in English) for remotely controlling the tilt parameters of an antenna system directly via the OMC operation and maintenance center (for Operation and Maintenance Center (English) of the operator.

L'architecture traditionnelle d'un système d'antenne panneau à polarisation croisée et inclinaison électrique variable VET comportant quatre ports est constituée par exemple de deux antennes panneaux unitaires traditionnelles à polarisation croisée (+45° et -45°) et inclinaison électrique variable VET comportant chacune un port de réception RX et un port de transmission/réception TX / RX. Chacune de ces antennes panneaux unitaires est associée à une unité de contrôle de l'inclinaison électrique à distance RET pour le pilotage individuel des paramètres d'inclinaison de chacune des antennes panneaux unitaires respectivement. Les valeurs des paramètres d'inclinaison sont imposées indépendamment pour chacune des antennes panneaux unitaires via chacune des unités de contrôle de l'inclinaison électrique à distance RET qui leur sont respectivement associées. La valeur de l'inclinaison est donc identique pour les deux polarisations +45° et -45° d'une même antenne panneau unitaire.The traditional architecture of a four-port VET cross-polarized and variable-tilt panel antenna system consists, for example, of two traditional cross-polarized (+ 45 ° and -45 °) cross-polarized panel unit antennas with VET variable electrical inclination. each having an RX receive port and a TX / RX transmit / receive port. Each of these unitary panel antennas is associated with a remote electrical tilt control unit RET for individually controlling the tilt parameters of each of the unitary panel antennas respectively. The values of the inclination parameters are imposed independently for each of the unitary panel antennas via each associated remote electrical tilt control unit RET. The value of the inclination is therefore identical for the two + 45 ° and -45 ° polarizations of the same unitary panel antenna.

D'une part, il est par exemple impossible avec cette architecture de différencier la couverture en transmission TX de la couverture en réception RX du système d'antenne panneau en changeant les paramètres d'inclinaison à partir des unités de contrôle de l'inclinaison électrique à distance RET. En effet, imposer des inclinaisons différentes aux deux antennes panneaux unitaires implique d'avoir aussi deux réglages différents de l'inclinaison pour la couverture en transmission TX ce qui n'est ni nécessaire, ni recommandé pour l'amélioration du fonctionnement de diversité en réception RX à quatre voies.On the one hand, it is for example impossible with this architecture to differentiate the TX transmission coverage from the RX reception coverage of the panel antenna system by changing the tilt parameters from the electrical tilt control units. remote RET. Indeed, imposing different inclinations to the two unitary panel antennas involves also having two different settings of the inclination for TX transmission coverage which is neither necessary nor recommended for the improvement of reception diversity operation. RX four-way.

D'autre part, dans le cas d'un fonctionnement de type formation de faisceau de ce système d'antenne panneau à quatre ports, il est nécessaire de combiner deux ports de polarisation identique (+45° ou -45°). Avec cette architecture habituelle, il est donc nécessaire d'appliquer des réglages identiques de l'inclinaison de chaque antenne panneau unitaire pour maintenir un fonctionnement de type formation de faisceau. En conséquence, les deux faisceaux combinés en mode réception RX ont la même inclinaison et ne diffèrent que par leur polarisation.On the other hand, in the case of a beam-forming type operation of this four-port panel antenna system, it is necessary to combine two ports of identical polarization (+ 45 ° or -45 °). With this usual architecture, it is therefore necessary to apply identical settings of the inclination of each unitary panel antenna to maintain beam-like operation. As a result, the two beams combined in RX receive mode have the same inclination and differ only in their polarization.

Le document US 2009/0066595 A1 divulgue une antenne comme définie dans le préambule de la revendication 1.The document US 2009/0066595 A1 discloses an antenna as defined in the preamble of claim 1.

La présente invention a pour but de palier ces deux inconvénients principaux de l'art antérieur en proposant une architecture de système d'antenne panneau qui offre un degré de liberté supplémentaire dans la mise en oeuvre des techniques d'antennes avancées, tels que MIMO et MIMO + formation de faisceau, utilisant des systèmes d'antenne panneau à polarisation croisée et inclinaison électrique variable VET comportant au moins quatre ports, afin de contribuer à améliorer les performances du réseau auquel il appartient.The present invention aims to overcome these two main disadvantages of the prior art by providing a panel antenna system architecture that offers an additional degree of freedom in the implementation of advanced antenna techniques, such as MIMO and MIMO + beamforming, using VET cross-polarized and variable-tilt panel antenna systems with at least four ports, to help improve the performance of the network to which it belongs.

L'objet de la présente invention est un système d'antenne panneau à polarisation croisée et inclinaison électrique variable comportant plusieurs ports, comprenant au moins deux antennes panneaux unitaires, ayant chacune deux ports de polarisation différente et deux séries d'éléments rayonnants alignés, et au moins deux interfaces mécaniques reliées au réseau d'alimentation des éléments rayonnants de chaque polarité. Chaque interface mécanique est reliée aux ports de même polarité appartenant respectivement à la première antenne panneau unitaire et à la deuxième antenne panneau unitaire.The object of the present invention is a cross-polarized, variable-inclination panel antenna system comprising a plurality of ports, comprising at least two unitary panel antennas, each having two ports of different polarization and two sets of aligned radiating elements, and at least two mechanical interfaces connected to the supply network of the radiating elements of each polarity. Each mechanical interface is connected to the ports of the same polarity respectively belonging to the first unitary panel antenna and the second unitary panel antenna.

Cette architecture pour un système d'antenne panneau à polarisation croisée et inclinaison électrique variable VET comportant quatre ports, est équipé de deux unités de contrôle de l'inclinaison électrique à distance RET où chacune de ces unités de contrôle RET contrôlent respectivement la polarisation +45° des deux antennes panneaux unitaires d'une part, et la polarisation -45° des deux antennes panneaux unitaires d'autre part.This architecture for a four-port VET cross-polarized and variable-tilt panel antenna system is equipped with two remote electrical tilt control units RET where each of these RET control units respectively control the +45 polarization. ° of the two unitary panel antennas on the one hand, and the -45 ° polarization of the two unitary panel antennas on the other hand.

De préférence chaque interface mécanique est reliée à une unité de contrôle de l'inclinaison électrique à distance de cette polarité. L'unité de contrôle de l'inclinaison électrique à distance RET est un composant qui vient se brancher sur une interface mécanique assurant la transition entre ce composant et le dispositif qui permet de contrôler de manière électromécanique l'inclinaison électrique variable de l'antenne en modifiant les phases du réseau d'alimentation des éléments rayonnants appartenant à chacune des polarisations.Preferably each mechanical interface is connected to an electrical tilt control unit remote from this polarity. The remote electrical tilt control unit RET is a component which is connected to a mechanical interface ensuring the transition between this component and the device which makes it possible to control electromechanically the variable electrical inclination of the antenna. modifying the phases of the supply network of the radiating elements belonging to each of the polarizations.

Ce système d'antenne panneau présente de nombreux avantages par rapport à l'art antérieur.This panel antenna system has many advantages over the prior art.

D'une part ce système d'antenne panneau permet d'améliorer les paramètres de découplage entre les ports TX / RX et RX d'une même antenne panneau unitaire, pour permettre un ajustement précis du découplage entre les ports. Il apporte plus de souplesse aux opérateurs en leur permettant d'ajuster au mieux le découplage entre les ports TX / RX et RX de ce système d'antenne panneau,On the one hand, this panel antenna system makes it possible to improve the decoupling parameters between the TX / RX and RX ports of the same unitary panel antenna, to allow a precise adjustment of the decoupling between the ports. It gives operators more flexibility by allowing them to better adjust the decoupling between the TX / RX and RX ports of this panel antenna system,

D'autre part il permet aussi dans une application en diversité à plusieurs voies de définir des couvertures différentes pour les voies TX / RX et RX afin d'améliorer le gain en diversité de réception sans impacter la transmission, ceci via un réglage des paramètres d'inclinaison qui peut être différent pour chacune des unités de contrôle de l'inclinaison électrique à distance RET.On the other hand, it also allows in a multi-channel diversity application to define different covers for the TX / RX and RX channels in order to improve the reception diversity gain without impacting the transmission, this being achieved by adjusting the parameters of the transmission. tilt which may be different for each of the control units of the remote electrical inclination RET.

Enfin ce système d'antenne panneau autorise l'introduction d'une sectorisation verticale dans la cellule couverte par l'émetteur, en permettant de différencier la couverture TX / RX de la couverture RX par le réglage d'une inclinaison différente au moyen de chacune des unités de contrôle de l'inclinaison électrique à distance RET. Il permet d'améliorer les performances du système en mode MIMO et MIMO + formation de faisceau, en offrant la possibilité d'appliquer des configurations d'inclinaison différentes sur les faisceaux formés en réception. Ce qui ajoute ainsi à la diversité de polarisation entre ces faisceaux, une diversité liée à la sectorisation verticale de la cellule couverte par l'émetteur.Finally, this panel antenna system allows the introduction of vertical sectoring in the cell covered by the transmitter, by differentiating the TX / RX coverage of the RX coverage by adjusting a different inclination by means of each one. Remote Tilt Control Units RET. It improves system performance in MIMO and MIMO + beamforming modes by providing the ability to apply different tilt configurations to the beams formed in reception. This adds to the diversity of polarization between these beams, a diversity linked to the vertical sectoring of the cell covered by the transmitter.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description qui suit d'un mode de réalisation, donné bien entendu à titre illustratif et non limitatif, et dans le dessin annexé sur lequel la figure unique représente un système d'antenne panneau à polarisation croisée et inclinaison électrique variable VET comportant quatre ports associé à deux unités de contrôle de l'inclinaison électrique à distance RET.Other features and advantages of the present invention will appear on reading the following description of an embodiment, given of course by way of illustration and not limitation, and in the accompanying drawing in which the single figure shows a system of FIG. cross-polarized panel antenna with variable electrical inclination VET comprising four ports associated with two remote electrical tilt control units RET.

Dans le mode de réalisation de l'invention illustré sur la figure, le système d'antenne panneau 1 comporte deux antennes panneaux unitaires 2A et 2B comprenant chacune deux séries d'éléments rayonnants alignés. Chaque élément rayonnant de chaque antenne panneau unitaire 2A, 2B est alimenté par une ramification 3A, 3B d'un réseau d'alimentation 4A, 4B pour la polarisation -45° et un réseau d'alimentation 5A, 5B pour la polarisation +45° respectivement Les éléments rayonnants sont alignés et fixés sur un réflecteur qui peut être commun. La première antenne panneau unitaire 2A comporte deux ports, un port TX / RX 6A de polarisation -45° pour la réception et la transmission et un port RX 7A de polarisation +45° pour la réception. Le port TX / RX 6A est connecté au réseau d'alimentation 4A qui pilote l'inclinaison variable de la polarité -45° de l'antenne 2A. Et le port RX 7A est connecté au réseau d'alimentation 5A qui pilote l'inclinaison variable de la polarité +45° de l'antenne 2A. De même la deuxième antenne panneau unitaire 2B comporte deux ports, un port TX / RX 6B de polarisation -45° pour la réception et la transmission et un port RX 7B de polarisation +45° pour la réception. Le port TX/RX 6B est connecté au réseau d'alimentation 4B qui pilote l'inclinaison variable de la polarité -45° de l'antenne 2B. Et le port RX 7B est connecté au réseau d'alimentation 5B qui pilote l'inclinaison variable de la polarité +45° de l'antenne 2B. In the embodiment of the invention illustrated in the figure, the panel antenna system 1 comprises two unitary panel antennas 2A and 2B each comprising two sets of aligned radiating elements. Each radiating element of each unitary panel antenna 2A, 2B is powered by a branch 3A, 3B of a supply network 4A, 4B for the -45 ° polarization and a supply network 5A, 5B for the polarization + 45 ° respectively The radiating elements are aligned and fixed on a reflector which can be common. The first 2A unitary panel antenna has two ports, a TX / RX 6A -45 ° polarization port for reception and transmission, and a + 45 ° polarization RX 7A port for receiving. The TX / RX port 6A is connected to the power supply 4A which controls the variable inclination of the -45 ° polarity of the antenna 2A. And the RX 7A port is connected to the 5A power supply that drives the variable inclination of the + 45 ° polarity of the 2A antenna . Likewise, the second unitary panel antenna 2B has two ports, a TX / RX port 6B with -45 ° polarization for reception and transmission, and a + 45 ° polarization RX 7B port for reception. The TX / RX port 6B is connected to the power supply 4B which controls the variable inclination of the -45 ° polarity of the antenna 2B. And the RX 7B port is connected to the power supply 5B which controls the variable inclination of the + 45 ° polarity of the antenna 2B.

Les ports TX / RX 6A, 6B sont reliés au moyen d'une interface mécanique 8A appartenant au système d'antenne panneau 1, et les ports RX 7A, 7B sont reliés au moyen d'une interface mécanique 8B. Deux unités de contrôle de l'inclinaison électrique à distance RET 9 et 10 sont respectivement reliées aux interfaces mécaniques 8A et 8B. Une première unité de contrôle de l'inclinaison électrique à distance RET 9 est reliée au centre d'opération et de maintenance OMC par un câble analogique 11 et une deuxième unité de contrôle de l'inclinaison électrique à distance RET 10 est reliée au centre OMC par un câble analogique 12. La première unité de contrôle à distance RET 9 commande le port TX / RX 6A de polarisation -45° de la première antenne panneau unitaire 2A et le port TX / RX 6B de polarisation -45° de la deuxième antenne panneau unitaire 2B. La deuxième unité de contrôle à distance RET 10 commande le port RX 7A de polarisation +45° de la première antenne panneau unitaire 2A et le port RX 7B de polarisation +45° de la deuxième antenne panneau unitaire 2B. The TX / RX ports 6A, 6B are connected by means of a mechanical interface 8A belonging to the panel antenna system 1, and the RX ports 7A , 7B are connected by means of a mechanical interface 8B. Two remote electrical tilt control units RET 9 and 10 are respectively connected to the mechanical interfaces 8A and 8B. A first remote electrical tilt control unit RET 9 is connected to the OMC operation and maintenance center by an analog cable 11 and a second remote electrical tilt control unit RET 10 is connected to the OMC center by an analog cable 12. The first remote control unit RET 9 controls the TX / RX port 6A of -45 ° polarization of the first unitary panel antenna 2A and the TX / RX port 6B of -45 ° polarization of the second antenna unitary panel 2B. The second remote control unit RET 10 controls the + 45 ° polarization port RX 7A of the first unitary panel antenna 2A and the + 45 ° polarization port RX 7B of the second unitary panel antenna 2B.

Ce système d'antenne panneau offre ainsi la possibilité d'appliquer une inclinaison différente aux deux faisceaux en réception TX / RX et RX pour chaque antenne en cas de sectorisation verticale, donnant ainsi une autre dimension au découplage entre les polarisations. Ce système d'antenne panneau améliore le découplage entre les quatre ports RX dans le système d'antenne panneau à polarisation croisée et inclinaison électrique variable VET en combinant la sectorisation spatiale, en polarisation et verticale qui est réalisée via des réglages d'inclinaison différents pour la mise en oeuvre des techniques d'antennes avancées telles que la diversité en réception à quatre voies, MIMO et MIMO + formation de faisceau.This panel antenna system thus offers the possibility of applying a different inclination to the two TX / RX and RX reception beams for each antenna in case of vertical sectorization, thus giving another dimension to the decoupling between the polarizations. This panel antenna system improves the decoupling between the four RX ports in the VET cross-polarized and variable-tilt panel antenna system by combining spatial segmentation, polarization and vertical which is achieved via different inclination settings for the implementation of advanced antenna techniques such as diversity in four-way reception, MIMO and MIMO + beam forming.

Le changement apporté à l'antenne consiste à relier mécaniquement les réseaux d'alimentation 4A, 4B et 5A, 5B, contrôlant l'inclinaison électrique variable VET de même polarisation de l'antenne panneau unitaire 2A d'une part et d'autre part de l'antenne panneau unitaire 2B, au moyen d'interfaces mécaniques 8A, 8B inclues dans le système d'antenne panneau 1. Cette liaison permet un contrôle simultané des composants radiofréquences RF assurant le contrôle de l'inclinaison électrique. Chacune des unités de contrôle de l'inclinaison électrique à distance RET 9 et 10 est ainsi reliée, par l'intermédiaire de l'une de ces interfaces mécaniques 8A et 8B respectivement, aux ports de même polarisation 6A, 6B d'une part et aux ports de même polarisation 7A, 7B d'autre part de chacune des antennes panneaux unitaires 2A et 2B. The change made to the antenna consists in mechanically connecting the power supply networks 4A, 4B and 5A, 5B, controlling the variable electrical inclination VET of the same polarization of the unitary panel antenna 2A on the one hand and secondly of the unitary panel antenna 2B, by means of mechanical interfaces 8A, 8B included in the panel antenna system 1. This connection allows simultaneous control of the RF radio frequency components ensuring the control of the electrical inclination. Each of the remote electrical inclination control units RET 9 and 10 is thus connected, via one of these mechanical interfaces 8A and 8B respectively, to the ports of the same polarization 6A, 6B on the one hand and to the ports of the same polarization 7A, 7B on the other hand of each of the unitary panel antennas 2A and 2B.

Bien entendu, la présente invention n'est pas limitée aux modes de réalisation décrits, mais elle est susceptible de nombreuses variantes accessibles à l'homme de l'art sans que l'on s'écarte de l'esprit de l'invention. En particulier, on pourra sans sortir du cadre de l'invention modifier le nombre de ports, et appliquer l'invention à tout système d'antenne panneau ayant un nombre pair de ports comme des systèmes d'antenne à six ports, huit ports, etc...Of course, the present invention is not limited to the described embodiments, but it is capable of many variants accessible to those skilled in the art without departing from the spirit of the invention. In particular, it will be possible without departing from the scope of the invention to modify the number of ports, and to apply the invention to any panel antenna system having an even number of ports such as six-port antenna systems, eight ports, etc ...

Claims (2)

  1. Cross-polarised panel antenna system with variable electrical tilting comprising multiple ports, including at least two unitary panel antennas (2A, 2B), each having two different polarisation ports (6A, 6B; 7A, 7B) and two series of aligned radiating elements, and at least two mechanical interfaces (8A, 8B) connected to the supply network (4A, 4B; 5A, 5B) of the radiating elements of each polarity, characterised in that each mechanical interface (8A, 8B) is connected to the ports of the same polarity (6A, 6B; 7A, 7B) respectively belonging to the first unitary panel antenna (2A) and the second unitary panel antenna (2B).
  2. Panel antenna system according to claim 1, wherein each mechanical interface (8A, 8B) is connected to a remote electrical tilt control unit (9, 10) for this polarity.
EP12306677.1A 2012-12-27 2012-12-27 Cross-polarised panel antenna system with variable electrical tilt Active EP2750245B1 (en)

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GB0125349D0 (en) * 2001-10-22 2001-12-12 Qinetiq Ltd Antenna system
GB0616449D0 (en) * 2006-08-18 2006-09-27 Quintel Technology Ltd Diversity antenna system with electrical tilt
US9030363B2 (en) * 2009-12-29 2015-05-12 Kathrein-Werke Ag Method and apparatus for tilting beams in a mobile communications network

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