EP0978154B1 - Antenna tower in the form of a tree - Google Patents
Antenna tower in the form of a tree Download PDFInfo
- Publication number
- EP0978154B1 EP0978154B1 EP98917455A EP98917455A EP0978154B1 EP 0978154 B1 EP0978154 B1 EP 0978154B1 EP 98917455 A EP98917455 A EP 98917455A EP 98917455 A EP98917455 A EP 98917455A EP 0978154 B1 EP0978154 B1 EP 0978154B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- trunk
- antennae
- branches
- mounting
- antenna
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- This invention relates to support structures for antennae and in particular, but not exclusively, such structures for use in mobile telephone communication systems.
- US-A-5 611 176 describes a support structure for antennae in the form of a tree.
- the present invention consists in a support structure for antennae in the form of a tree having a trunk, branches and means for mounting an antenna characterised in that the means for mounting the antenna are disposed on the trunk and in that the adjacent branches diverge outwardly from the means for mounting to leave a clear arc of sight.
- the main portions of the branches may now be made of metal, because they no longer extend across the line of sight of the antennae and so will not have any detrimental effect on the signals being received or transmitted by the antennae. This can both increase strength and significantly reduce cost. In particular it can reduce the wind loading on the structure and hence allow for reduced trunk diameter.
- these main portions of the branch may be made of sections of metal tubing, each succeeding section, as the branch extends from the trunk, being of a smaller diameter than its immediately preceding section. In this case, the outward end of at least some sections may be curved inwardly to provide a transition between the diameters. From a distance this arrangement provides an authentic looking tapering branch, without the necessity for complex forming of tubing.
- the branches may include leaf portions comprising leaves and twigs and these may be formed from wires twisted on to or to form a central core with their free ends diverging progressively, layer by layer towards the tip so as to provide the constant bifurcation seen in nature. These portions may be coated in sibriolaced propopylene (MILON) to enhance strength and appearance and then dipped in chlorinated rubber paint.
- MILON sibriolaced propopylene
- the trunk may be formed by a metal tube, which preferably tapers, and the branches may extend through the trunk to be fixed to the other side either directly or via sockets.
- the structure may further comprise dish antennae mounting means locatable at the top of the trunk and comprising at least a pair of divergent upwardly extended branches, each defining vertical portion to provide a dish antenna mounting.
- the mounting dish antenna means may be locatable at at least a range of rotational orientations relative to the trunk to allow for a variety of combinations of line of shoot, for the microwave antennae, and branch location.
- the trunk may define a cable housing and access doors may be provided in the trunk.
- the trunk may also define or carry step locations up at least part of its length. In certain cases the stress locations may be removable.
- the tower may further comprise dual polarised antennae mounted on the trunk by respective mounting means and these may be painted or otherwise decorated to blend in with the trunk. It is particularly preferred that these antennae are formed as set out in our co-pending European Patent Application EP-A-685900.
- the tower may further comprise respective dish antenna, which may be mounted on the dish antenna mountings mentioned above.
- the dish antenna mounting means may include a stub portion for insertion in or around the upper end of the trunk. This or other location arrangements preferably allow a variety of rotational orientations of the mounting means relative to the trunk to be achieved.
- a support structure in the form of an antennae tower, generally indicated at 10, includes a trunk 11, branches 12 and antennae 13 and 14.
- the trunk 11 comprises a stack of tapering sections 15-18, each of which are in the form of hollow steel tube.
- the bottom section 15 has an annular flange 19 through which bolts (not shown) can be fixed into a concrete foundation 20.
- the trunk sections would normally be sleeved onto or slipped onto each other but they may be welded together on erection, or connected by any suitable attachment mechanism may be used.
- the trunk sections may be painted or otherwise coated to be provided with a bark-like appearance either before or after erection. After erection the application of which occurs between trunk sections.
- the paint may be Micaceous Iron Oxide (MIO) and may be applied by hand.
- MIO Micaceous Iron Oxide
- the bottom section 15 has an access door 21 to allow cables to be inspected and a cable insertion door 22.
- a corresponding door is provided at 23 in section 17 to provide a feed line exit.
- Sections 15 and 16 and 17 may be provided with locations 24 for steps to enable the trunk to be climbed.
- a permanent or replaceable climbing ladder section may be provided on 18.
- branches 12 which are shown on sections 16 and 17, simply have the function of making the tree life like and it would be seen that some of these branches may be in the form of cut off or broken branches as are often seen on the lower trunk portions of pines.
- branches at the top of the trunk 11 are formed and located in a way which reflects the purpose of the tower 10.
- the branches are fabricated in accordance with the same principle.
- the main branch portions 25 consist of successive tubes 26 of decreasing diameter the further the tubes are away from the trunk 11.
- Each tube is made of steel or other suitable metal.
- Some of the tubes 26 have side tubes or branches 27 to increase the branch like structure. From these side tubes 27 and the end of the final main tube 26, project twigs and leaf portions 28. These portions 28 may be formed in any suitable fashion and will depend on the type of tree which is being imitated.
- the twigs may be formed by winding layers of metal wires around a central core, or together to form a central core, and then progressively diverging the free ends of those wires so that the portion 28 gets thinner towards its end and the diverged wires form small twigs for carrying artificial pine needles.
- the wire structure may be coated with sibriolated propopylene (MILON) to enhance strength and appearance and then dipped in chlorinated rubber paint.
- MILON sibriolated propopylene
- the branches 26 and sub-branches 27 can be rotated to vary the appearance of the structure to suite particular circumstances.
- the main portions 26, which actually contacts the trunk, may be supported by sockets 29, with or without associated flanges or simply by flanges. Additionally or alternatively, they may extend through the trunk (forming a small stub on the other side) and be welded to that other side to give good structural strength and location.
- the remainder of the branch 25 may be removable from the main portion 26 for repair and maintenance.
- Section 18 carries three suitable antenna mounting means 13a, which may be brackets, bolt holes or the like, depending on the nature of the antenna to be mounted. These are preferably spaced at 120° and vertically offset by at least a small amount to enable the arcs to be present without a bare section appearing around the trunk. Branches 12 extend out radially between the mounting positions 13a so that they more or less bisect the arc between those positions. In this way it is possible to achieve an effective 360° line of sight for the combination of antennae 13 mounted on the mounting means without interference arising from the fact that the branches 12 are made of metal.
- suitable antenna mounting means 13a which may be brackets, bolt holes or the like, depending on the nature of the antenna to be mounted. These are preferably spaced at 120° and vertically offset by at least a small amount to enable the arcs to be present without a bare section appearing around the trunk. Branches 12 extend out radially between the mounting positions 13a so that they more or less bisect the arc between those positions. In
- the antenna 13 are in the form of elongate rectangles and can be decorated to blend in with the trunk. Only three antennae are needed, because dual polarisation antennae are utilised. If more antennae were required, greater vertical offset may be needed to achieve the same result.
- these antennae 13 receive and transmit the signals to and from the mobile phones.
- Further dish microwave antenna 14 are required to communicate with the network as a whole. These tend to have to be mounted on vertical tubes and can be particulary difficult to disguise effectively.
- the applicants have cleverly disguised the necessary vertical tubes 30 as part of a bifurcated branch structure 31, which has a dependent stub (not shown) that is sleeved inside the open end of trunk section 18. This arrangement lifts the dish antennae above the metallic sections of other branches 12, whilst enhancing the tree like appearance of the tower 10.
Landscapes
- Support Of Aerials (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Details Of Aerials (AREA)
Abstract
Description
Claims (17)
- A support structure for antennae (13) in the form of a tree having a trunk (11), branches (12) and means for mounting antenna (13a) characterised in that the means for mounting the antenna (13a) are disposed on the trunk (11) and in that the adjacent branches (12) diverge outwardly from the means for mounting (13a) to leave a clear arc of sight.
- A structure as claimed in claim 1 comprising three means for mounting (13a) spaced around the trunk (11).
- A structure as claimed in claim 1 or claim 2 wherein the means for mounting (13a) are vertical offset.
- A structure as claimed in any one of the preceding claims wherein at least the main portion of the branches (12) are metal.
- A structure as claimed in any one of the preceding claims wherein the main portions of the branches (12) are made of sections (26) of metal tubing, each succeeding section, as the branch extends from the trunk, being of a smaller diameter than its immediately preceding section.
- A structure as claimed in claim 5 wherein the outward end of at least some sections (26) are curved inwardly to provide a transition between diameters.
- A structure as claimed in any one of the preceding claims wherein the branches (12) include leaf portions (28) comprising imitation leaves and twigs.
- A structure as claimed in any one of the preceding claims wherein the trunk (11) is formed by a metal tube or tubes (15-18) and wherein the branches (12) extend through the trunk (11) are fixed to the other side.
- A structure as claimed in claim 8 wherein the thick end of the branch (12) extends through the other side of the trunk (11) and is welded or otherwise fixed thereto.
- A structure as claimed in any one of the preceding claims further comprising dish antennae mounting means (30) locatable on the top of the trunk (11) and comprising at least a pair of divergent upwardly extending branches (31) each defining a vertical portion to provide a dish antenna mounting.
- A structure as claimed in any one of the preceding claims wherein the trunk (11) defines a cable housing and access doors (22, 23) are provided in the trunk (11).
- A structure as claimed in claim 11 wherein the trunk (11) defines or carry step ladder locations (24) up at least part of its length.
- A structure as claimed in any one of the preceding claims wherein the trunk (11) is formed from tapering sections (15-18).
- A structure as claimed in any one of the preceding claims further comprising three dual polarised antennae (13) mounted on the trunk (11) by respective mounting means (13a).
- A structure as claimed in claim 14 wherein the dual polarised antennae (13) are painted to blend in with the trunk (11).
- A structure as claimed in claim 14 or claim 15 further comprising respective dish antennae (14).
- A structure as claimed in claim 16 as dependent on claim 10 wherein the dish antennae (14) are mounted on respective dish antenna mountings (30).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9708433.9A GB9708433D0 (en) | 1997-04-26 | 1997-04-26 | Towers for antennae |
GB9708433 | 1997-04-26 | ||
PCT/GB1998/001191 WO1998049744A1 (en) | 1997-04-26 | 1998-04-23 | Antenna tower in the form of a tree |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0978154A1 EP0978154A1 (en) | 2000-02-09 |
EP0978154B1 true EP0978154B1 (en) | 2003-07-16 |
Family
ID=10811371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98917455A Expired - Lifetime EP0978154B1 (en) | 1997-04-26 | 1998-04-23 | Antenna tower in the form of a tree |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0978154B1 (en) |
AT (1) | ATE245312T1 (en) |
AU (1) | AU7068398A (en) |
DE (1) | DE69816435D1 (en) |
GB (2) | GB9708433D0 (en) |
WO (1) | WO1998049744A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2333645B (en) * | 1998-06-12 | 2000-03-22 | Vodafone Ltd | Radio signal transmitting and/or receiving arrangements |
ES2186454B1 (en) * | 1998-08-17 | 2004-08-01 | Eladio Martin Ingenieria Energetica Y De Contaminacion S.A. (Inerco) | ENVIRONMENTAL SYSTEM FOR HIGH VOLTAGE POWER LINES. |
IT1311773B1 (en) * | 1999-01-26 | 2002-03-19 | Calzavara S P A | ARTIFICIAL TREE FOR ANTENNAS CAMOUFLAGE. |
IT1311622B1 (en) * | 1999-12-28 | 2002-03-14 | Calzavara S P A | ARTIFICIAL TREE FOR ANTENNAS CAMOUFLAGE. |
ES2160539B1 (en) * | 2000-02-10 | 2003-04-01 | Jimenez Belinchon S A | APPLICABLE CAMOUFLAGE PROVISION ON TOWERS SUPPORT OF ANTENNAS OF TECHNELOMUNICATIONS OR SIMILAR. |
IES20000857A2 (en) * | 2000-10-25 | 2001-12-12 | Eircell 2000 Plc | Cellular base station antenna unit |
US6658797B2 (en) * | 2001-01-31 | 2003-12-09 | Absolute Stealth Ltd. | Antenna support structure with palm tree skirt |
GB2374122A (en) * | 2001-04-03 | 2002-10-09 | David Mcknight | Wind turbine disguised as a tree |
DE10140441C2 (en) * | 2001-08-10 | 2003-06-18 | Fus Torsten | Mounting system for the installation of antenna systems with antenna covers |
ES2195762B1 (en) * | 2002-01-25 | 2005-03-01 | Ibelca Ingenieria De Telecomunicaciones, S.A. | CAMOUFLAGE SYSTEM OF TELECOMMUNICATIONS AND SIMILAR ANTENNAS. |
ES2196989B1 (en) * | 2002-01-30 | 2005-03-01 | Ibelca Ingenieria De Telecomunicaciones, S.A. | CAMOUFLAGE OF ANTENNAS INSTALLED IN BUILDINGS. |
ES2195767B1 (en) * | 2002-01-30 | 2005-03-01 | Ibelca Ingenieria De Telecomunicaciones, S.A. | CAMOUFLAGE FOR MOBILE TELEPHONY ANTENNAS AND ASSEMBLY SIMILARS IN OPEN SPACES. |
GB0609741D0 (en) * | 2006-05-17 | 2006-06-28 | Robinson Nicholas P | Cybertree |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1549526A (en) * | 1967-11-02 | 1968-12-13 | ||
US3646562A (en) * | 1970-06-03 | 1972-02-29 | Us Navy | Helical coil coupled to a live tree to provide a radiating antenna |
US5097647A (en) * | 1990-11-09 | 1992-03-24 | Canadian Communications Structures Inc. | Support tower for communications equipment |
GB2279813B (en) * | 1993-07-02 | 1997-05-14 | Northern Telecom Ltd | Polarisation diversity antenna |
US5611176A (en) * | 1994-03-02 | 1997-03-18 | Juengert; Robert P. | Antenna support structure |
ZA971475B (en) * | 1996-02-23 | 1997-08-28 | Sectional Poles Africa Pty | Concealment and disguisement of antenna structures. |
-
1997
- 1997-04-26 GB GBGB9708433.9A patent/GB9708433D0/en active Pending
-
1998
- 1998-04-23 AT AT98917455T patent/ATE245312T1/en not_active IP Right Cessation
- 1998-04-23 GB GB9808541A patent/GB2325569B/en not_active Expired - Fee Related
- 1998-04-23 DE DE69816435T patent/DE69816435D1/en not_active Expired - Lifetime
- 1998-04-23 AU AU70683/98A patent/AU7068398A/en not_active Abandoned
- 1998-04-23 EP EP98917455A patent/EP0978154B1/en not_active Expired - Lifetime
- 1998-04-23 WO PCT/GB1998/001191 patent/WO1998049744A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP0978154A1 (en) | 2000-02-09 |
GB9808541D0 (en) | 1998-06-17 |
AU7068398A (en) | 1998-11-24 |
DE69816435D1 (en) | 2003-08-21 |
GB2325569A (en) | 1998-11-25 |
GB2325569B (en) | 1999-08-11 |
GB9708433D0 (en) | 1997-06-18 |
ATE245312T1 (en) | 2003-08-15 |
WO1998049744A1 (en) | 1998-11-05 |
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