WO2013026204A1 - Ensemble antenne - Google Patents

Ensemble antenne Download PDF

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Publication number
WO2013026204A1
WO2013026204A1 PCT/CN2011/078890 CN2011078890W WO2013026204A1 WO 2013026204 A1 WO2013026204 A1 WO 2013026204A1 CN 2011078890 W CN2011078890 W CN 2011078890W WO 2013026204 A1 WO2013026204 A1 WO 2013026204A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
antenna assembly
signal processing
assembly according
intermediate cover
Prior art date
Application number
PCT/CN2011/078890
Other languages
English (en)
Inventor
Stephen Haworth
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to CN201180072803.2A priority Critical patent/CN103718378B/zh
Priority to EP11871316.3A priority patent/EP2676328B1/fr
Priority to PCT/CN2011/078890 priority patent/WO2013026204A1/fr
Publication of WO2013026204A1 publication Critical patent/WO2013026204A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
    • 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

Definitions

  • the present invention relates to an antenna assembly for wireless communication systems, and more especially to an integrated antenna assembly.
  • an antenna is a passive component in a wireless communication system.
  • Communication cables from the antenna feed radio frequency signals to a Remote Radio Unit (RRU) which is located a distance from the antenna.
  • RRU Remote Radio Unit
  • Typical functionalities of a RRU is e.g. filtering and converting of analogue radio frequency signals to digital signals, baseband processing of incoming data, signal processing, and signal strength boosting of transmission signals, etc.
  • Figure 1 schematically shows a traditional antenna system with a passive antenna unit connected to a RRU via a communication cable.
  • An active antenna system integrates one or more of the functionalities of a RRU with the passive antenna and allows for other performance enhancements.
  • the RRU comprises active electronics, such as power amplifiers, signal processing devices, AD converters, high speed fibre optic devices and power supply.
  • active electronics such as power amplifiers, signal processing devices, AD converters, high speed fibre optic devices and power supply.
  • the inclusion of active electronics within the integrated antenna requires that the antenna housing has the same environmental protection classification required as for the RRU.
  • the housing simply encases the antenna array from the outdoor environment, since the antenna is a passive part of the network and does not house active electronics.
  • Passive antennas require a level of outdoor environmental protection to prevent corrosion of elements and contacts, but it does not need to be fully sealed against water or dust ingress as there are no active electrical components in a passive antenna.
  • active antennas having active electronics have to be sealed against water and dust ingress.
  • the introduction of active electronics into the antenna also require cooling of the electronics, which adds a further level of complexity to the antenna design, including the incorporation of a heat sink which is exposed to the air to allow for natural convection cooling of the active components of the antenna.
  • the object of the present invention is to provide an antenna assembly which mitigates and/or solves the disadvantages of prior art solutions.
  • the invention especially aims to solve the problem of sealing integrated active antennas.
  • an antenna assembly for wireless communication systems comprising an antenna part and an antenna signal processing part together forming an integrated antenna assembly
  • said antenna part comprising at least one antenna element adapted for receiving/transmitting wireless communication signals
  • said antenna signal processing part comprising at least one processing unit adapted for signal processing communication signals to and/or from said at least one antenna element;
  • said antenna assembly further comprises a first gasket (Gl) and a second gasket (G2) for sealing said antenna assembly,
  • the present invention provides a water tight seal which protects the internal electronics built into integrated antennas from being damaged by moisture or dust ingress into the antenna unit.
  • the seal provides protection against moisture and dust ingress to sensitive electronics and allows for an embodiment with a heat sink to aid with the cooling of the aforementioned electronics.
  • gasket seals according to the invention allows for maintenance operations to be performed by being easier to separate the parts of the antenna for repair, upgrade and for recycling when the antenna reaches the end of its useable life. Further applications and advantageous of the invention will be apparent from the following detailed description.
  • Figure 1 schematically shows a traditional antenna system with a passive antenna unit connected to RRU;
  • Figure 2 schematically shows a first embodiment of an antenna assembly according to the present invention
  • FIG. 3 schematically shows a part of a second embodiment of an antenna assembly according to the invention.
  • Figure 4 schematically shows an antenna assembly viewed from above.
  • the present invention relates to an integrated antenna assembly comprising a passive antenna part and an active antenna signal processing part.
  • the former comprising at least one antenna element (but often an array of antenna elements for antenna beam control in cellular communication systems) for receiving/transmitting wireless communication signals, and the latter comprising one or more signal processing units or any other active component for processing wireless communication signals.
  • the two parts are in communication with each other by means of one or more communication interfaces, such as communication cables.
  • a processing unit in this disclosure should have a wide interpretation and may incorporate such as Digital Signal Processor (DSP), power amplifier, AD or DA converters, etc.
  • DSP Digital Signal Processor
  • the antenna part and the antenna signal processing part are attached to each other by means of an intermediate cover C located between the two parts, which also separates mentioned two parts.
  • the intermediate cover C may comprises suitable connection means/interfaces for transmission of signals between the antenna elements and the signal processing unit in the two different parts.
  • the antenna assembly further comprises a first gasket Gl and a second gasket G2 for sealing the antenna assembly against water and dust.
  • the first gasket Gl is arranged to act in a first direction Dl on the intermediate cover C
  • the second gasket G2 is arranged to act in a second direction D2 on the intermediate cover C, wherein the second direction D2 is substantially opposite to the first direction Dl .
  • FIG 2 schematically shows an embodiment of an antenna assembly according to the invention.
  • the integrated antenna assembly in figure 2 is shown in cross section.
  • the upper part is the antenna signal processing part and the lower part is the antenna part.
  • an intermediate cover C is located between the upper and lower parts.
  • the mentioned three parts may be attached to each other by means of suitable fastening means, such as bolts, screws, rivets or adhesives.
  • suitable fastening means such as bolts, screws, rivets or adhesives.
  • the main radiation direction of the antenna is also illustrated in figure 2.
  • a first Gl and a second G2 gasket are provided in a first Grl and a second Gr2 groove, respectively.
  • the first gasket Gl acts on the intermediate cover C in a first direction Dl
  • the second gasket G2 acts on the intermediate cover C in a second direction D2 opposite to the first direction Dl.
  • a water tight and dust free seal is provided as the force acting on the intermediate cover C from the first gasket Gl is balanced by the force acting on the intermediate cover C from the second gasket G2 which results in a tight fit.
  • the intermediate cover C is made of a material, such as sheet metal of aluminium that may deflect when a force acts on it.
  • the gaskets Gl, G2 are made of a compressible material, such as silicon rubber or any other suitable material with the compression and sealing properties. It should further be noted that the first Grl and second Gr2 grooves in which the gaskets Gl, G2 run extend along the circumference of respective parts so as to achieve extra good sealing.
  • FIG. 3 schematically shows a cross section of a part of another embodiment of an antenna assembly according to the invention.
  • the embodiment in figure 3 comprises a heat sink HS (of which only a part is shown) made of aluminum having one or more cooling flanges (not shown).
  • the heat sink HS also functions as a cover for the antenna signal processing part in this embodiment.
  • the antenna assembly in figure 3 further comprises a (plastic) radome R protecting the antenna part.
  • the first groove Grl is located in the heat sink HS, while the second groove Gr2 is located in the radome R. Further, the first groove Grl extends on the inside of the fastening means (in this case screws) while the second groove Gr2 extends along the outside of said fastening means.
  • Figure 4 illustrates the antenna assembly from above.
  • the dotted lines illustrate the first Grl and second Gr2 grooves, respectively, and it is noted that the two grooves Grl, Gr2 extend on two different distances dl, d2 in relation to the edge of the antenna assembly.
  • the antenna assembly is preferably used as base station antenna in cellular wireless communication systems and therefore adapted for radio frequencies in such systems.
  • Examples of such systems are: GSM, UMTS, LTE, and LTE -Advanced.
  • the present invention is not limited to the embodiments described above, but also relates to and incorporates all embodiments within the scope of the appended independent claim.
  • Another aspect of the use of heat sinks in antennas is its weight. It is well known that it is preferable if the antenna assembly has a low weight as possible. The inventors have realized that the surface area that the heat sinks cover may be less then the surface area of the intermediate cover C so as to reduce weight. The cooling of the active components may still be achieved. A drawback with this solution is the asymmetry introduce by the different surface areas which complicates the sealing of such antennas further.
  • the present invention has proved in tests that it is possible to provide a satisfactory seal and reduce the number of fasteners using the sealing arrangement described in the application which also means that time and cost can be reduced when producing antenna assemblies according to the invention.
  • the benefits of using opposing forces according to the invention decrease the smaller the heat sink and the greater the offset between the two gaskets Gl, G2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)

Abstract

La présente invention concerne un ensemble antenne destiné à des systèmes de communication sans fil et comprenant une partie d'antenne et une partie de traitement des signaux d'antenne formant ensemble un ensemble antenne intégré. Ladite partie d'antenne comprend au moins un élément d'antenne conçu pour recevoir/émettre des signaux de communication sans fil. Ladite partie de traitement des signaux d'antenne comprend au moins une unité de traitement conçue pour traiter des signaux de communication à destination et/ou en provenance dudit au moins un élément d'antenne. Ladite partie d'antenne et ladite partie de traitement des signaux d'antenne sont fixées ensemble et séparées l'une de l'autre à l'aide d'un couvercle intermédiaire (C) situé entre ladite partie d'antenne et ladite partie de traitement des signaux d'antenne. Ledit ensemble antenne comprend en outre un premier joint d'étanchéité (G1) et un second joint d'étanchéité (G2) assurant l'étanchéité dudit ensemble antenne. Ledit premier joint d'étanchéité (G1) est placé de façon à agir dans une première direction (D1) sur ledit couvercle intermédiaire (C). Ledit second joint d'étanchéité (G2) est placé de façon à agir dans une seconde direction (D2) sur ledit couvercle intermédiaire (C). Ladite seconde direction (D2) est sensiblement opposée à ladite première direction (D1).
PCT/CN2011/078890 2011-08-25 2011-08-25 Ensemble antenne WO2013026204A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201180072803.2A CN103718378B (zh) 2011-08-25 2011-08-25 天线组件
EP11871316.3A EP2676328B1 (fr) 2011-08-25 2011-08-25 Ensemble antenne
PCT/CN2011/078890 WO2013026204A1 (fr) 2011-08-25 2011-08-25 Ensemble antenne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/078890 WO2013026204A1 (fr) 2011-08-25 2011-08-25 Ensemble antenne

Publications (1)

Publication Number Publication Date
WO2013026204A1 true WO2013026204A1 (fr) 2013-02-28

Family

ID=47745854

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/078890 WO2013026204A1 (fr) 2011-08-25 2011-08-25 Ensemble antenne

Country Status (3)

Country Link
EP (1) EP2676328B1 (fr)
CN (1) CN103718378B (fr)
WO (1) WO2013026204A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10224642B2 (en) 2014-06-03 2019-03-05 Airrays Gmbh Modular antenna system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267297A (en) 1990-08-22 1993-11-30 Mitsubishi Denki Kabushiki Kaisha Base station for a radio communication system
CN101895018A (zh) * 2009-05-04 2010-11-24 河北威奥电子科技有限公司 一种防雷型gnss有源天线
CN201689982U (zh) * 2010-06-08 2010-12-29 佛山市南海微波通讯设备有限公司 一种有源定向终端天线
CN101950846A (zh) * 2010-09-03 2011-01-19 广东通宇通讯设备有限公司 一种有源一体化天线系统
CN102035061A (zh) * 2010-12-10 2011-04-27 广东通宇通讯股份有限公司 一种一体化设计的有源天线散热器
US20110188205A1 (en) * 2010-02-04 2011-08-04 Powerwave Technologies, Inc. Active antenna array heatsink

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7043280B1 (en) * 2001-10-11 2006-05-09 Adaptix, Inc. Mechanically rotatable wireless RF data transmission subscriber station with multi-beam antenna
DE102006056501B4 (de) * 2006-11-30 2012-05-03 Saint-Gobain Sekurit Deutschland Gmbh & Co. Kg Verbundglasscheibe mit einer in ein Durchgangsloch eingesetzten Befestigungseinrichtung für eine Antenne
US20090002260A1 (en) * 2007-06-29 2009-01-01 Barry Booth EZ fit antenna base (side mount)
CN201112540Y (zh) * 2007-08-27 2008-09-10 寰波科技股份有限公司 整合式天线模组
EP2113963A1 (fr) * 2008-05-02 2009-11-04 Nokia Siemens Networks Oy Enceinte et ensemble de montage pour une antenne
DE102009028620A1 (de) * 2009-08-18 2011-02-24 Endress + Hauser Gmbh + Co. Kg Messgerät der Prozessautomatisierungstechnik zur Ermittlung und Überwachung einer chemischen oder physikalischen Prozessgröße in einem Hochtemperatur-Prozess in einem Behälter
CN201573775U (zh) * 2010-01-13 2010-09-08 赵平 改进型溢油跟踪定位浮标装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267297A (en) 1990-08-22 1993-11-30 Mitsubishi Denki Kabushiki Kaisha Base station for a radio communication system
CN101895018A (zh) * 2009-05-04 2010-11-24 河北威奥电子科技有限公司 一种防雷型gnss有源天线
US20110188205A1 (en) * 2010-02-04 2011-08-04 Powerwave Technologies, Inc. Active antenna array heatsink
CN201689982U (zh) * 2010-06-08 2010-12-29 佛山市南海微波通讯设备有限公司 一种有源定向终端天线
CN101950846A (zh) * 2010-09-03 2011-01-19 广东通宇通讯设备有限公司 一种有源一体化天线系统
CN102035061A (zh) * 2010-12-10 2011-04-27 广东通宇通讯股份有限公司 一种一体化设计的有源天线散热器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10224642B2 (en) 2014-06-03 2019-03-05 Airrays Gmbh Modular antenna system

Also Published As

Publication number Publication date
EP2676328A1 (fr) 2013-12-25
EP2676328A4 (fr) 2015-02-18
CN103718378A (zh) 2014-04-09
CN103718378B (zh) 2016-06-29
EP2676328B1 (fr) 2017-11-15

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