EP0982793A2 - Mât d'antenne - Google Patents

Mât d'antenne Download PDF

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Publication number
EP0982793A2
EP0982793A2 EP99306419A EP99306419A EP0982793A2 EP 0982793 A2 EP0982793 A2 EP 0982793A2 EP 99306419 A EP99306419 A EP 99306419A EP 99306419 A EP99306419 A EP 99306419A EP 0982793 A2 EP0982793 A2 EP 0982793A2
Authority
EP
European Patent Office
Prior art keywords
mast
aerial
mast part
region
operating equipment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99306419A
Other languages
German (de)
English (en)
Other versions
EP0982793A3 (fr
Inventor
Richard Anthony Smith
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.)
Portasilo Ltd
Original Assignee
Portasilo 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 Portasilo Ltd filed Critical Portasilo Ltd
Publication of EP0982793A2 publication Critical patent/EP0982793A2/fr
Publication of EP0982793A3 publication Critical patent/EP0982793A3/fr
Withdrawn legal-status Critical Current

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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
    • H01Q1/1242—Rigid masts specially adapted for supporting an aerial

Definitions

  • the present invention relates to an aerial mast.
  • Aerial masts comprising an upstanding mast part having communication means for receiving and/or transmitting electromagnetic signals such as analogue and/or digital radio signals and/or microwave signals at or adjacent the top of the mast part, require operating equipment which comprises, for example, a transceiver system and a power supply unit.
  • Conventional aerial masts have the operating equipment located in an equipment housing, which is separate from the mast part.
  • aerial masts Another problem encountered with aerial masts is that of security. With conventional aerial masts, it is necessary to provide a perimeter fence and gates, which enclose a site on which the mast part and equipment housing are installed, to deter an unauthorised person from gaining access to the mast part and equipment housing, as well as the radio frequency cabling.
  • An object of the present invention is to overcome or reduce the problems relating to aerial masts as described above.
  • an aerial mast comprising an upstanding mast part having communication means at or adjacent the top of the mast part for receiving and/or transmitting electromagnetic signals such as analogue and/or digital radio signals and/or microwave signals, and a chamber within a lower region of the mast part.
  • the mast part preferably comprises an upper region generally of smaller cross-section than the lower region.
  • the cross-section of a lower end of the upper region of the mast part may be smaller than the cross-section of an upper end of the lower region of the mast part, such that the lower region is visually distinct from the upper region.
  • the mast part may comprise a middle region having an upper end adjacent the lower end of the upper region of the mast part, and a lower end adjacent the upper end of the lower region of the mast part.
  • the middle region of the mast part may be tapered such that its upper end has a cross-section substantially equal to that of the lower end of the upper region of the mast part, and its lower end has a cross-section substantially equal to that of the upper end of the lower region of the mast part.
  • the upper region of the mast part preferably extends substantially from the top of the mast part downwards towards the lower region.
  • the chamber is preferably adapted to house operating equipment, and operating equipment may be housed within the chamber.
  • the operating equipment preferably comprises a transceiver system capable of receiving and/or transmitting electrical signals such as analogue and/or digital radio frequency signals and/or microwave frequency signals.
  • the operating equipment preferably further comprises a power supply unit, and may also comprise a back up power supply from a battery.
  • the operating means may comprise means for controlling the environmental conditions within the chamber.
  • the communication means may comprise at least one antenna and/or one microwave dish.
  • the mast part preferably comprises means capable of relaying signals between the operating equipment and the communication means.
  • the relaying means may comprise radio frequency cabling, for example coaxial cable.
  • the chamber is preferably adapted to accommodate, and provide access for, at least one person to carry out maintenance on the operating equipment.
  • the mast part is preferably prefabricated.
  • the mast part may comprise a generally circular cross-sectional configuration.
  • the mast part may comprise a generally polygonal cross-sectional configuration, for example a sixteen sided polygonal cross-sectional configuration.
  • the mast part may be provided with means for a person to carry out maintenance on the communication means, for example a ladder located on an outer surface of the mast part.
  • the mast part may have a height of up to fifteen metres.
  • the mast part may have a height of up to twenty two and a half metres.
  • the mast part may have a height of up to thirty or even forty five metres.
  • an installation comprising a single foundation having mounted thereon an aerial mast as described above wherein the installation has no separate structure mounted thereon for housing operating equipment.
  • An advantage of the present invention is that the operating equipment may be housed within the chamber of the mast part, and so no separate equipment housing is required. Consequently there is no need for radio frequency cabling to extend between the mast part and the equipment housing to connect the operating equipment and the communication means, and so no corresponding glands or means for supporting the cabling are required.
  • the mast part itself substantially provides sufficient security for the operating equipment, and so there is no need for security fencing and gates to be provided around the perimeter of a site on which the mast is installed.
  • Another advantage of there being no separate structures is that earthing strips are only required around the perimeter of the single, relatively small foundation, rather than around a plurality of foundations, or a relatively large foundation upon which both the mast part and the separate equipment housing are installed.
  • an aerial mast 10 mounted on a single foundation 15 comprising an upstanding mast part 11 having an upper region 12 and a lower region 14. Substantially at a top end of the upper region 12 there is provided communication means 16 for receiving and transmitting electromagnetic signals such as digital and/or analogue radio signals and microwave signals.
  • the communication means 16 illustrated in Figure 1 comprises antennae 18 and microwave dishes 20, although any other suitable form of aerial may be provided.
  • the upper region 12 generally comprises a smaller cross-section than the lower region 14, and the mast part 11 further comprises a middle region 22, between a lower end and an upper end of the upper and lower regions 12, 14 respectively.
  • the cross-section of the middle region 22 is tapered such that the upper end of the middle region 22 has a cross-section substantially equal to that of the lower end of the upper region 12, and the lower end of the middle region 22 has a cross-section substantially equal to that of the upper end of the lower region 14.
  • the lower region 14 is bolted to the foundation 15, the foundation bolts being within the chamber for increased security.
  • the chamber 13 preferably comprises no floor to allow easy location of, and access for torquing down, the foundation bolts.
  • the operating equipment 17 is preferably wall mounted to keep it clear of the ground, and comprises a transceiver system, capable of transmitting and receiving electrical signals such as digital and/or analogue radio frequency signals and microwave frequency signals.
  • the operating equipment further comprises a power supply unit to provide an interface between a power supply, such as a mains power supply or a power supply from an on site generator, and the rest of the operating equipment 17.
  • the operating equipment 17 may also comprise any other equipment required, e.g. a back up power supply from a battery.
  • the operating equipment 17 preferably also comprises means for controlling the environmental conditions within the chamber 13, for example air-cooling means, heating means and/or refrigeration means. Such environmental controlled means may utilise a chimney effect provided by the mast part 11.
  • the chamber 13 is provided with thermal insulation in order to assist in the control of the environmental conditions within the chamber 13.
  • the mast part 11 is capable of providing sufficient security for the operating equipment 17 and so no fencing or gates are required around the perimeter of a site on which the aerial mast 10 is installed.
  • the aerial mast 10 is also provided with a means 19, generally illustrated by a third set of broken lines, for relaying signals between the operating equipment 17 and the communication means 16.
  • Such relaying means 19 may be in the form of radio frequency cabling, e.g. coaxial cable, which extends up the inside of the mast part 11.
  • electromagnetic signals are transmitted/received by the communication means 16, which converts them from/to electrical signals which are relayed from/to the operating equipment 17.
  • Cable management is preferably provided, such that the cabling is routed within the mast part 11, and hatches are provided in the mast part 11, at strategic points along the mast part 11, allowing access and inspection tasks to be performed in relation to the cabling.
  • Mounting brackets are provided to support the cabling, and earthed outer sheaths are provided for the cabling to reside therein.
  • An access door 24 is provided in the lower region 14 of the mast part 11 to allow a person 21 access to the chamber 13 so that maintenance may be carried out on the operating equipment 17 by the person 21.
  • the access door 24 is preferably provided with means for it to be securely locked to prevent unauthorised access.
  • internal lighting is provided within the chamber 13 to aid the person 21 in carrying out the maintenance on the operating equipment.
  • Means to allow access to the communication means 16 for maintenance to be carried out is also provided, which for the embodiment illustrated in Figure 2 is in the form of a ladder 26, which is located on an outer surface of the mast part 11 and extends substantially to the top of the upper region 12, where the communication means 16 is located.
  • the lower end of the ladder 26 is located at a distance above the ground, out of reach of the unauthorised person.
  • Anti-climb means e.g. anti-climb paint, may be provided on the outer surface of the mast part 11, beneath the lower end of the ladder, to hinder an unauthorised person trying to reach the ladder.
  • an intruder alarm may also be provided.
  • foot holds, hand holds and lashing points are preferably provided at or adjacent the top of the mast part 11 for an authorised person to secure himself to when carrying out maintenance to the communication means 16.
  • a fall arrest system is provided on the ladder 26 to increase the safety of the authorised person when ascending and descending the ladder 26.
  • External lighting is preferably also provided to assist in poor light conditions when maintenance work is being carried out on the communication means 16.
  • the mast part 11 may have a height of up to fifteen meters, although it may alternatively have a height of up to twenty two and a half meters, or even thirty meters, or even forty five metres.
  • the mast part 11 is preferably prefabricated, in particular for mast lengths of twenty two and a half metres or more, comprising a plurality of sections 28. Sections 28 of the mast part 11 are fitted together by virtue of the upper end of one section 28 a tapering inwardly and being received within the lower end of the upwardly adjacent section 28 b , and forced together causing them to lock, in a similar fashion as a Morse taper system.
  • the lower and middle regions 14, 22 may be provided by separate sections 28, or alternatively may be provided by a single section 28. Alternatively, the top end of the middle region 22 may be welded to the bottom end of the upper region 12, whilst the bottom end of the middle region 22 is bolted, for example, to the top end of the lower region 14.
  • a separate mast head may be provided on top of the mast part 11, which is suitable for mounting thereon a dual polar and/or cross polar antenna arrangement, along with any other alternative communication means 17 required. This provides the further advantage of mounting the communication means 17 at ground level, prior to the head mast being located at the top of the mast part 11.
  • the cross-section of the mast part 11 is intended to have a sixteen sided polygonal simulating a substantially circular configuration, although the cross-section of the mast part 11 may have any other suitable configuration, e.g. any polygonal configuration of at least three sides, or a substantially oval configuration.
  • the mast part 11 is not limited to the configuration illustrated in the drawings. Any other configuration capable of providing a chamber in a lower region of the mast part may alternatively be provided, such as a mast part comprising a cross-section which increases substantially evenly from a smaller cross-section at the top of the mast part to a larger cross-section at the bottom of the mast part. In this case there are no separately identifiable upper, middle and lower regions.
  • the mast part comprises no middle region such that the upper end of the lower region is adjacent the lower end of the upper region, and the cross-sections of the lower and upper ends of the upper and lower regions respectively being such that the lower region is visually distinct from the upper region due to a discontinuity in the mast part, forming a generally step shaped configuration which may be of generally annular shape.
  • the present invention provides a controlled environment within the chamber 13 for the operating equipment 17, it allows full maintenance access to the operating equipment 17 in dry conditions in all weathers, smaller installation sites, no perimeter fences, smaller foundations, shorter radio frequency cabling required between operating equipment 17 and communication means 16, and higher level of security than conventional sites.
  • the mast part When installing the aerial mast 10, the mast part is preferably factory finished and shipped to the site, ready for site assembly in the case of the mast being prefabricated.
  • the communication means 16 and cabling can be installed at ground level.
  • the chamber 13 is factory fitted with the operating equipment 17. Lifting points at the top of the lower region 14 of the mast part 11 allows it to travel to the site and be manoeuvred by a crane directly into position over the prepared foundation 15. After securing the lower region 14 to the foundation 15, the remainder of the mast part 11 can be elevated into position.

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  • Radio Relay Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP99306419A 1998-08-14 1999-08-13 Mât d'antenne Withdrawn EP0982793A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9817652 1998-08-14
GB9817652A GB2340513A (en) 1998-08-14 1998-08-14 An aerial mast

Publications (2)

Publication Number Publication Date
EP0982793A2 true EP0982793A2 (fr) 2000-03-01
EP0982793A3 EP0982793A3 (fr) 2000-08-23

Family

ID=10837204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99306419A Withdrawn EP0982793A3 (fr) 1998-08-14 1999-08-13 Mât d'antenne

Country Status (2)

Country Link
EP (1) EP0982793A3 (fr)
GB (1) GB2340513A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2358030A (en) * 1999-12-18 2001-07-11 Portasilo Ltd Foundation for combined aerial and housing structure
WO2002056410A2 (fr) * 2001-01-15 2002-07-18 Dafna Engineering Ltd. Colonne de communication conique avec une cavite
EP3513533A4 (fr) * 2016-09-16 2020-05-27 Waterford Consultants LLC Dispositif et procédé de surveillance de secteur d'antenne rf
CN114016799A (zh) * 2021-11-26 2022-02-08 航天科工深圳（集团）有限公司 一种带载波通讯的无线供电自运维多功能杆及其运维方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1315885B1 (it) * 2000-04-06 2003-03-26 So L E Societa Luce Elettrica Torre faro dotata di stazione radio base per telefonia mobile.
DE10026109C1 (de) * 2000-05-26 2002-01-31 Pfleiderer Infrastrukturt Gmbh Halterung einer Plattform an einem konischen Antennenmast
DE20210148U1 (de) 2002-07-02 2002-09-26 Grötz, Georg, 76597 Loffenau Sendemast für ein Telefon-, Radio- oder Funknetz
CN105580198B (zh) * 2013-02-20 2019-04-16 中兴西班牙有限责任公司 无线网络中的紧凑型微型基站

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9004802U1 (de) * 1990-04-27 1990-07-05 Hopstener Kabel TV GmbH, 4447 Hopsten Antennenturm
WO1995016840A1 (fr) * 1993-12-15 1995-06-22 Mafi Ab Tour d'antenne
US5581958A (en) * 1995-01-27 1996-12-10 Unr Industries, Inc. Pole and cabinet structure for antenna-mounting at communications site
FR2748860A1 (fr) * 1996-05-20 1997-11-21 Malhomme Thierry Yves Dispositif pour surelever par rapport au sol les systemes de diffusion de l'image et du son et autres systemes d'emissions et de receptions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5904004A (en) * 1997-02-25 1999-05-18 Monosite, Inc. Integrated communications equipment enclosure and antenna tower
WO1998054426A1 (fr) * 1997-05-28 1998-12-03 Siemens Ltda. Abri pour materiel de telecommunication et tour d'emission/reception de signaux electromagnetiques

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9004802U1 (de) * 1990-04-27 1990-07-05 Hopstener Kabel TV GmbH, 4447 Hopsten Antennenturm
WO1995016840A1 (fr) * 1993-12-15 1995-06-22 Mafi Ab Tour d'antenne
US5581958A (en) * 1995-01-27 1996-12-10 Unr Industries, Inc. Pole and cabinet structure for antenna-mounting at communications site
FR2748860A1 (fr) * 1996-05-20 1997-11-21 Malhomme Thierry Yves Dispositif pour surelever par rapport au sol les systemes de diffusion de l'image et du son et autres systemes d'emissions et de receptions

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2358030A (en) * 1999-12-18 2001-07-11 Portasilo Ltd Foundation for combined aerial and housing structure
GB2358031A (en) * 1999-12-18 2001-07-11 Portasilo Ltd Combined housing and mast structure
WO2002056410A2 (fr) * 2001-01-15 2002-07-18 Dafna Engineering Ltd. Colonne de communication conique avec une cavite
WO2002056410A3 (fr) * 2001-01-15 2002-11-28 Dafna Engineering Ltd Colonne de communication conique avec une cavite
EP3513533A4 (fr) * 2016-09-16 2020-05-27 Waterford Consultants LLC Dispositif et procédé de surveillance de secteur d'antenne rf
US10969415B2 (en) 2016-09-16 2021-04-06 Waterford Consultants Llc RF antenna sector monitoring device and method
CN114016799A (zh) * 2021-11-26 2022-02-08 航天科工深圳（集团）有限公司 一种带载波通讯的无线供电自运维多功能杆及其运维方法
CN114016799B (zh) * 2021-11-26 2022-12-20 航天科工深圳（集团）有限公司 一种带载波通讯的无线供电自运维多功能杆及其运维方法

Also Published As

Publication number Publication date
GB9817652D0 (en) 1998-10-07
GB2340513A (en) 2000-02-23
EP0982793A3 (fr) 2000-08-23

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