EP2750245B1 - Flachantennensystem mit Kreuzpolarisation und variabler elektrischer Inklination - Google Patents

Flachantennensystem mit Kreuzpolarisation und variabler elektrischer Inklination 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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EP
European Patent Office
Prior art keywords
panel antenna
antenna system
ports
cross
polarization
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EP12306677.1A
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English (en)
French (fr)
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EP2750245A1 (de
Inventor
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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Application filed by Alcatel Lucent Shanghai Bell Co Ltd filed Critical Alcatel Lucent Shanghai Bell Co Ltd
Priority to EP12306677.1A priority Critical patent/EP2750245B1/de
Publication of EP2750245A1 publication Critical patent/EP2750245A1/de
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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.

Landscapes

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

Claims (2)

  1. Planarantennensystem mit Kreuzpolarisation und variabler elektrischer Neigung mit mehreren Anschlüssen, umfassend mindestens zwei einheitliche Planarantennen (2A, 2B), die jeweils zwei Anschlüsse mit unterschiedlicher Polarisation (6A, 6B; 7A, 7B) und zwei Reihen von ausgerichteten Strahlenelementen aufweisen, und mindestens zwei mechanische Schnittstellen (8A, 8B), die mit dem Versorgungsnetzwerk (4A, 4B; 5A, 5B) von Strahlenelementen jeder Polarität verbunden sind, dadurch gekennzeichnet, dass jede mechanische Schnittstelle (8A, 8B) mit den Anschlüssen derselben Polarität (6A, 6B; 7A, 7B) verbunden ist, die zu der ersten einheitlichen Planarantenne (2A) bzw. der zweiten einheitlichen Planarantenne (2B) gehören.
  2. Planarantennensystem nach Anspruch 1, wobei jede mechanische Schnittstelle (8A, 8B) mit einer Einheit zur Fernsteuerung der elektrischen Neigung (9, 10) dieser Polarität verbunden ist.
EP12306677.1A 2012-12-27 2012-12-27 Flachantennensystem mit Kreuzpolarisation und variabler elektrischer Inklination Active EP2750245B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12306677.1A EP2750245B1 (de) 2012-12-27 2012-12-27 Flachantennensystem mit Kreuzpolarisation und variabler elektrischer Inklination

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12306677.1A EP2750245B1 (de) 2012-12-27 2012-12-27 Flachantennensystem mit Kreuzpolarisation und variabler elektrischer Inklination

Publications (2)

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EP2750245A1 EP2750245A1 (de) 2014-07-02
EP2750245B1 true EP2750245B1 (de) 2015-12-16

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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EP2750245A1 (de) 2014-07-02

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