EP2389710A1 - Coffret et ensemble de montage pour une antenne - Google Patents

Coffret et ensemble de montage pour une antenne

Info

Publication number
EP2389710A1
EP2389710A1 EP09738156A EP09738156A EP2389710A1 EP 2389710 A1 EP2389710 A1 EP 2389710A1 EP 09738156 A EP09738156 A EP 09738156A EP 09738156 A EP09738156 A EP 09738156A EP 2389710 A1 EP2389710 A1 EP 2389710A1
Authority
EP
European Patent Office
Prior art keywords
tube
radome
chimney
mounting
base station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09738156A
Other languages
German (de)
English (en)
Other versions
EP2389710B1 (fr
Inventor
Matti Mikkola
Tuomas Nylén
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.)
Nokia Solutions and Networks Oy
Original Assignee
Nokia Siemens Networks Oy
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 Nokia Siemens Networks Oy filed Critical Nokia Siemens Networks Oy
Priority to EP09738156A priority Critical patent/EP2389710B1/fr
Publication of EP2389710A1 publication Critical patent/EP2389710A1/fr
Application granted granted Critical
Publication of EP2389710B1 publication Critical patent/EP2389710B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect

Definitions

  • Embodiments of the present invention relate to an enclosure and mounting assembly for an antenna.
  • base stations provide the coverage for end user access.
  • the most popular macro base station has one or several radios or transmitters and receivers (TRX) inside, configured in one or several sector fashion, and covers a radius of a few kilometres.
  • TRX transmitters and receivers
  • Antennas are mostly external, large in size, and connected to the TRX via cables and connectors.
  • the whole base station needs a specialized cellular site to install, due to the physical size of equipment, high power consumption, and height requirements.
  • the traditional Macro cells have to be scaled down to Micro or even Pico cells, with a radius shrinking from a few kilometres to a few hundred meters.
  • the mounting sites for such small base stations are less cellular specific, such as walls of building, rooftop of building, street light post, utility poles, traffic lights, etc...
  • an apparatus comprising: a radome; and a tube disposed within, and mounted to, the radome, wherein the tube has an outer surface adapted for mounting transmitter and/or receiver components thereon and an inner surface defining a cooling chimney, and wherein the radome has an opening at each end of the tube for allowing air to circulate through the cooling chimney.
  • the aforementioned arrangement has been found to provide a low cost, compact, and readily constructed apparatus for embedding multiple active antennas in an enclosed structure.
  • the central tube serves to form both a mounting and isolation structure for the transmitter and/or receiver components and also a cooling chimney for removing heat generated by the transmitter and/or receiver components.
  • the tube also acts as a structural backbone for the apparatus.
  • the tube may have a plurality of sides and be adapted for mounting a transmitter and/or receiver on each one of the sides.
  • the tube may have a substantially triangular cross-section.
  • An active antenna may be mounted on each of the three sides of the triangular cross-sectioned tube.
  • the radome may also have a substantially triangular cross- section for compactness and ease of mounting the tube therein.
  • the complementary shape of the tube and radome also aids in sealing areas where the transmitter and/or receiver components are mounted.
  • the tube may be made of aluminium.
  • An aluminium tube is lightweight and has been found to be ideal in functioning as a structural backbone, a radio frequency insulator among sectors, and a heat sink for electronic components.
  • the tube may comprise one or more cross-bracing elements disposed within the cooling chimney between points on the inner surface of the tube. The one or more cross-bracing elements function to strengthening the apparatus while still allowing air to flow through the cooling chimney.
  • the radome may be made of plastic which is lightweight and provides RF- transparency to embedded antennas.
  • the radome may comprise a handle on an outer surface thereof for carrying the apparatus.
  • the handle is disposed over one of the openings in the radome for reducing ingress of moisture, dust, and/or other debris while still allowing air to exit the opening.
  • the apparatus may be adapted to be mounted with the tube orientated in a vertical direction with a top and bottom opening. Air can then circulate up the chimney with cool air entering through the bottom opening and heated air exiting through the top opening by convection.
  • the handle may be disposed thereover.
  • a bottom plate may be provided for mounting the tube to the radome.
  • one of the openings in the radome for allowing air to circulate through the cooling chimney may be defined by the bottom plate.
  • the tube may be mounted to the radome to form a seal at each end of the tube isolating air within the cooling chimney from a region between the outer surface of the tube and an inner surface of the radome.
  • a gasket may be provided at each end of the tube to form the seal.
  • the region between the outer surface of the tube and the inner surface of the radome may be sealed to an ingress protection rating of at least 67 (IP67).
  • IP67 ingress protection rating of at least 67
  • Such a seal protects electronic components mounted therein from dust and moisture.
  • the transmitter and/or receiver components can be provided in various forms. In one arrangement the outer surface of the tube is adapted for mounting electronic boards comprising the transmitter and/or receiver components.
  • the apparatus of certain embodiments of the present invention may be provided with transmitter and/or receiver components to form a base station of a wireless communications network, for example, a mobile phone network.
  • a wireless communications network for example, a mobile phone network.
  • Figure 1 shows an exploded view of a wireless base station according to an embodiment of the invention
  • Figure 2 shows a top view illustrating the cross-section of a central triangular aluminium tube of the wireless base station of Figure 1 with electronic boards mounted thereon;
  • Figure 3 shows a side cross-section view of the wireless base station of Figure 1 illustrating convection cooling through a cooling chimney defined by the central triangular aluminium tube of Figure 2;
  • Figure 4 shows a perspective view of the fully constructed wireless base station of
  • Figure 5 shows the wireless base station mounted to a post.
  • Certain embodiments of the invention provide multiple-sector multiple-radio base stations with embedded antennas. These embodiments can be used as micro or pico base stations deployed outdoors in high density to provide broadband wireless access.
  • the mechanical design of one such wireless base station consists of the following three elements: a central aluminium chimney; a plastic radome disposed around the central aluminium chimney with a handle; and a bottom plate for mounting the chimney in the radome.
  • Figure 1 shows an exploded view of such a wireless base station.
  • This design centers around an aluminium chimney (1), which acts simultaneously as the structural backbone, a radio frequency insulator among sectors, a heat sink for electronic components, and a chimney for self convection.
  • the external enclosure, or radome (2) is integrated with a handle doubled as a rain/dust cover for the ventilation holes.
  • the plastic radome is transparent to radio waves so that the embedded antennas can function properly.
  • the bottom plate (3) provides an interface to a mounting unit (shown in Figure 5) and weather proof external connectors (4) for power and data. It is also the mechanical foundation for securing the aluminium chimney (1) and the radome (2). Cool air is flown inside the chimney through the bottom plate (3).
  • the bottom plate (3) is a single injection moulded part made of glass-reinforced PA66. With the aluminium chimney (1), it forms the rigid backbone of the base station.
  • the bottom plate (3) has a cylindrical interface for mounting to a cylindrical fastening element of a mounting unit (showing in Figure 5).
  • the cylindrical interface also doubles as an inlet channel for cool air. Cable entry areas are located on the bottom of the bottom plate (3) and provide fastening points for the cable glands.
  • Two cable hatches (4) (one for power, one for data connectors) provide weather protection for the areas of cable entry to an ingress protection rating of 67 (IP 67).
  • the two cable hatches (4) also provide strain relief to the cables. Cable glands are integrated with flexible drop stopper arms and captive screws to avoid accidental fall of parts.
  • a top gasket (5a) is provided between the aluminium chimney (1) and the radome (2).
  • a bottom gasket (5b) is provided between aluminium chimney (1) and the bottom plate (3).
  • a partition gasket (5c) is provided between the radome (2) and bottom plate (3).
  • Electronic boards (6a, 6b, 6c) are mounted on outer faces of the triangular aluminium chimney.
  • the gaskets serve to seal the electronics area within an enclosure between the outer surface of the aluminium chimney (1) and the inner surface of the radome (2) to an ingress protection rating of 67.
  • the top and bottom gaskets (5a, 5b) can be stamped out of a sheet of elastic material.
  • the partition gasket (5c) may be an injection moulded elastomer.
  • the core of the wireless base station is provided by the triangular cross-sectioned aluminium chimney (1) which is shown in more detail in Figure 2.
  • the chimney (1) has multiple functions: it forms the rigid chassis of the apparatus onto which electronics are fixed; and it defines a cooling chimney though which air can flow.
  • a cross-bracing structure (7) in the middle of the triangular profile adds additional heat sink capability to the chimney by increasing surface area.
  • the cross-bracing structure (7) also serves to strengthen the apparatus.
  • Electronic boards (6a, 6b, 6c) are mounted on outer faces of the triangular aluminium chimney.
  • Recesses (8) may be provided in the outer surface of the chimney for receiving electronic components (9) therein.
  • the recesses (8) allow mounting of electronic components (9) that have a building height beyond a few millimetres. This enables integration of an AC/DC power supply and external interface circuits m a compact arrangement.
  • the triangular, closed shape of the aluminium chimney (1) provides isolation and RF- shielding between antenna sectors. With the top and bottom gaskets (5a, 5b), the aluminium chimney (1) separates the IP-protected area and the open cooling area within.
  • the triangular shape that hides the antennas from each other delivers about 4OdB isolation in between the sectors.
  • the outer surface of the radome (2) is illustrated in Figure 4 showing the ventilation holes (10) and handle (14).
  • the radome may be formed as a single injection moulded PC/ABS part. With the chimney and the gaskets it protects the electronics and allows the heated air to flow outside the apparatus.
  • the radome provides RF-transparency to the embedded antennas.
  • the integrated handle (14) is disposed over the ventilation holes (10) to protect against ingress of rain and debris. This structure allows easy handling and installation of the apparatus, while also providing a protected thermal exit.
  • Figure 5 shows the wireless base station mounted to a post (15) by a mounting unit (16).
  • the mounting urrit (16) provides the means to install the wireless base station to vertical, horizontal or slanted poles (such as lamp posts) or onto a wall.
  • the mounting unit (16) has a swivel mechanism to provide tilt adjustment of 90 degrees.
  • the wireless base station is designed such that assembly is efficient and fast, following top to bottom logic. The steps involved in assembly are as follows:
  • the bottom gasket is placed in its position into the bottom plate and secured with adhesive
  • top gasket is placed in its position inside the top of the radoine and secured with adhesive;
  • the aluminium chimney is secured to the bottom plate with self-tapping screws;
  • the chimney equipped with electronics boards, is slid inside the radome and secured to it with screws through the bottom plate;
  • the wireless base station can be installed by one person only, in less than half an hours time.
  • the typical installation of the base station involves the following steps:
  • the base station is generally mounted in an upright position.
  • the base station After performing the aforementioned installation steps the base station is ready to be powered up.
  • Embodiments provide a small multi-sector base station design with embedded antenna without sacrificing high performance as all the benefits of multiple-sector design such as frequency re-use, noise reduction, and radio energy focusing are retained. Excellent heat dissipation is provided purely by self convection. No fans are required and there is no need for environmentally controlled site cabinets. Embodiments are cheap to manufacture and assemble.
  • the aluminium profile can be formed by extrusion and then cut to a desired length. No post-processing is needed. Self threading screw holes, alignment rails and heat sink are all designed into the profile.
  • the radome with integral handle and bottom plate can both be single-shot injection moulded parts well suited for mass production. Sectors may be symmetrical which enables per sector sub-assembly of antenna and radio.
  • Installation is simple due to the light weight of the apparatus and single hand operation via the built-in handle. No external antennas are required and few or no cables and connectors are required to be attached at mounting height. Little or no node orientation is needed.
  • the unit may be easily mounted on any vertical or horizontal pole or attached to a wall. The final assembly of the whole unit should not take one person more than 15 minutes of labour.
  • the base station may be used as a node in any broadband radio technology. Examples include WLAN, WiMAX, and 2G/3G/nG cellular base stations. Embodiments can significantly reduce the size and cost of multi-sector base station.

Landscapes

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

Abstract

La présente invention concerne un appareil comprenant : un radôme ; et un tube disposé dans le radôme et monté sur celui-ci. Le tube présente une surface externe conçue pour le montage de composants d’émetteur et/ou de récepteur sur celui-ci et une surface interne définissant une cheminée de refroidissement et le radôme présente une ouverture à chaque extrémité du tube pour permettre que l’air circule par la cheminée de refroidissement.
EP09738156A 2008-05-02 2009-04-28 Coffret et ensemble de montage pour une antenne Active EP2389710B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09738156A EP2389710B1 (fr) 2008-05-02 2009-04-28 Coffret et ensemble de montage pour une antenne

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08155601A EP2113963A1 (fr) 2008-05-02 2008-05-02 Enceinte et ensemble de montage pour une antenne
EP09738156A EP2389710B1 (fr) 2008-05-02 2009-04-28 Coffret et ensemble de montage pour une antenne
PCT/EP2009/055143 WO2009133112A1 (fr) 2008-05-02 2009-04-28 Coffret et ensemble de montage pour une antenne

Publications (2)

Publication Number Publication Date
EP2389710A1 true EP2389710A1 (fr) 2011-11-30
EP2389710B1 EP2389710B1 (fr) 2012-08-01

Family

ID=39710838

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08155601A Withdrawn EP2113963A1 (fr) 2008-05-02 2008-05-02 Enceinte et ensemble de montage pour une antenne
EP09738156A Active EP2389710B1 (fr) 2008-05-02 2009-04-28 Coffret et ensemble de montage pour une antenne

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08155601A Withdrawn EP2113963A1 (fr) 2008-05-02 2008-05-02 Enceinte et ensemble de montage pour une antenne

Country Status (3)

Country Link
EP (2) EP2113963A1 (fr)
ES (1) ES2392353T3 (fr)
WO (1) WO2009133112A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2884676A4 (fr) * 2012-08-07 2016-02-24 Kmw Inc Petite station de base pour un système de communication mobile
EP3014964A4 (fr) * 2013-06-28 2017-02-22 CommScope Technologies LLC Module de suppression de tête radio distante (trd)/procédés de convection naturelle

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013026204A1 (fr) * 2011-08-25 2013-02-28 Huawei Technologies Co., Ltd. Ensemble antenne
ES2862457T3 (es) * 2012-11-16 2021-10-07 Kmw Inc Dispositivo de estación base de tamaño pequeño en un sistema móvil de comunicación
CN104032932B (zh) * 2013-03-05 2016-05-18 四川汇源信息技术有限公司 高效防尘的天线型出气装置
EP3033805B1 (fr) 2013-08-16 2017-05-24 CommScope Technologies LLC Architecture modulaire à petites cellules
EP3560030B1 (fr) 2016-12-22 2022-03-30 Signify Holding B.V. Mât, dispositif d' éclairage, lampadaire extérieur et segment du mât
CN112005438B (zh) * 2018-04-23 2024-05-31 奈特卡姆无线私人有限公司 用于容纳天线的天线罩和制造天线罩的方法
WO2023085988A1 (fr) * 2021-11-15 2023-05-19 Telefonaktiebolaget Lm Ericsson (Publ) Ensemble module de refroidissement pour noeud de réseau monté sur lampadaire

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
SE503948C2 (sv) * 1993-12-15 1996-10-07 Mafi Ab Mast
GB2289827B (en) * 1994-05-17 1998-05-20 Motorola Ltd Integrated mast base station
JP3661766B2 (ja) * 2000-06-22 2005-06-22 日本電気株式会社 通信機器の実装構造
US7043280B1 (en) * 2001-10-11 2006-05-09 Adaptix, Inc. Mechanically rotatable wireless RF data transmission subscriber station with multi-beam antenna
DE102005063234B4 (de) * 2005-12-19 2007-08-30 Fuß, Torsten, Dr.-Ing. Tragkonstruktion zum Aufbau von Antennenmasten und dergleichen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009133112A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2884676A4 (fr) * 2012-08-07 2016-02-24 Kmw Inc Petite station de base pour un système de communication mobile
KR101868869B1 (ko) * 2012-08-07 2018-06-19 주식회사 케이엠더블유 이동통신 시스템의 소형 기지국
EP3014964A4 (fr) * 2013-06-28 2017-02-22 CommScope Technologies LLC Module de suppression de tête radio distante (trd)/procédés de convection naturelle

Also Published As

Publication number Publication date
EP2389710B1 (fr) 2012-08-01
WO2009133112A1 (fr) 2009-11-05
ES2392353T3 (es) 2012-12-10
EP2113963A1 (fr) 2009-11-04

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