EP0613208B1 - Drehbares Vorhangantennensystem - Google Patents
Drehbares Vorhangantennensystem Download PDFInfo
- Publication number
- EP0613208B1 EP0613208B1 EP94102391A EP94102391A EP0613208B1 EP 0613208 B1 EP0613208 B1 EP 0613208B1 EP 94102391 A EP94102391 A EP 94102391A EP 94102391 A EP94102391 A EP 94102391A EP 0613208 B1 EP0613208 B1 EP 0613208B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- curtain
- curtains
- dipole
- reflector
- tower shaft
- 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
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Classifications
-
- 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 invention relates to a rotatable curtain antenna system, according to the preamble of claim 1.
- the invention System is preferably higher for broadcasting Suitable transmission powers in the shortwave range.
- a short-wave rotating antenna is known from DE-A1-3241057, which has a central, rotating tower on which Boom for clamping dipole and reflector curtains are braced.
- the tower with the brackets and curtains is self-supporting and turns around its longitudinal axis on a tower base anchored in the ground.
- the curtains are stretched from the side Distance parallel to the boom level from this level outstanding arms of the boom.
- On the upper arms the ropes run over rollers and are at their free Provide tensioning ends at the ends.
- Each of the lower arms is included two suspension cables are held, each on both sides of the reflector curtain - between the reflector and the neighboring dipole curtain - are arranged.
- the antenna consists of two dipole curtains and a reflector curtain, which is suspended between the two dipole curtains.
- the Suspension of the reflector curtain on the tower which, as a lattice construction executed, a square cross-sectional shape is carried out on two adjacent edges of the tower, which are in the plane of the reflector curtain.
- the dipole curtains are suspended from the tower with support arms, which are positioned in the central axis of the tower.
- Another rotatable antenna system is known from FR-A-2591806.
- This Antenna system are two dipole curtains and one between the dipole curtains arranged reflector curtain stretched on horizontal brackets.
- the cantilever arms are attached to the tower shaft with one end above and below the curtains and the other end is held with suspension cables, which are outside the clamping surfaces the curtains run.
- the reflector curtain stretched between the brackets is additionally attached directly to the tower shaft. The location of the curtain level of the reflector curtain is thus fixed on the tower shaft.
- the dipole curtains are open only held on the brackets and are without in the middle of the respective curtain surface Support.
- the invention has for its object a rotatable To create curtain antenna system that even with wind load the antenna curtains touch between metallic Parts of the curtains and the structure are prevented while keeping the curtain spacing constant.
- the invention has the advantage that with rotating antennas a central mast touches between the curtains and the structure can be avoided under wind load.
- This The advantage is according to the invention without increasing the tension weights achieves what heavy and expensive structures require would. Because shortwave broadcasts regardless of the weather should be broadcast at all times in accordance with the schedule, is the limitation of operability to moderate large wind speeds that are significantly below the maximum occurring, a serious shortage of known rotatable curtain antenna systems with a central Tower.
- the invention one can enter due to wind load Avoid deterioration in impedance matching because the distances between the curtains are also in the area of the suspensions remain constant under wind load. By attaching to the tower, the wind deflection the curtains near the tower are restricted and those on the Boom transmitted forces reduced.
- the rotatable curtain antenna system shown in Fig. 1 exists from a central one, rotatable about its longitudinal axis Tower. There are two lower ones on the tower shaft 1 of this tower Bracket 4 and two upper brackets 5 attached and guyed.
- the arms 4, 5 are braced on the tower shaft 1 so that they are in pairs from the tower shaft 1 extending to opposite sides and that this for all booms 4, 5 in a vertical Level is done.
- the brackets are braced by the top of the turret 31 starting from the upper cantilever support ropes 6 and by means of lower boom support ropes 7.
- the tower shaft 1 is firmly anchored in the ground Tower base 3 rotatably supported via a torque bearing 2.
- the antenna system is with a dipole curtain 17 - for the 6- to 11-MHz radio bands - and with a dipole curtain 18, which is designed for the 11 to 21 MHz radio bands is equipped (the dipole curtain 17 is off in FIG. 1 Omitted for clarity been).
- the antenna system shown is with a reflector curtain 19 equipped for both dipole curtains 17, 18 is effective.
- the dipole curtains 17, 18 are on the lower arms 4, on the cantilever arms 8, 9, on the cantilever arms 10, 11, 12 and attached to the tower arms 13, 14.
- a tower rail 16 is provided in the middle of the tower attached parallel to the tower spaced with tower arms 15 is. On the tower rail 16, the horizontal running wires of the reflector curtain 19 suspended.
- the dipole curtains exist 17, 18 from half-wave dipoles in each curtain in four horizontal dipole lines 20, 21 and in four vertical curtain columns 22, 23 are arranged.
- Each curtain column 22, 23 consists of in a known manner Feed lines for the dipoles and from ropes.
- Farther is each dipole curtain 17, 18 and also the reflector curtain 19 with ropes 24, 25, 26 and with roof ropes 27, 28, 29 provided. These ropes are used for the side Open and hang the curtains.
- the span is the structure between the ends of the booms 4, 5 about 90 m and the height of the turret 31 above the Earth also about 90 m.
- the tower shaft 1 has one Diameter (in the case of a cylindrical version) or one side length (with version with square cross-section) of about 4 m.
- the forces acting on the structure limit and to a defined compliance to ensure the curtains when exposed to wind and ice, it is provided that the edge ropes 24, 25, 26th and the roof ropes 27, 28, 29 of the curtains on the top Cantilever bowels 9 guided to the tower shaft 1 via rollers in which the ropes then hang with tensioning weights.
- This tensioning system is in the embodiment not shown.
- the high-frequency feed system, too on the lower arms 4 and in the lower part of the Turmes is not shown in the drawing.
- Fig. 2 shows the curtain antenna system shown in Fig. 1 with a view of the long-wave dipole curtain 17; for reasons of an understandable presentation without consideration of the reflector curtain 19 and the short-wave Dipole curtain 18. Details of FIG. 2 are given above taken into account in the description of FIG. 1.
- the arrangement is in the plan view shown in FIG. 3 of the individual curtains to each other.
- the reflector curtain 19 is spaced from the tower shaft 1 on a Side of this tower shaft arranged.
- the short-wave dipole curtain 18 at a distance from the reflector curtain 19th which is approximately a quarter wavelength of the dipole curtain 18 is.
- the longer-wave dipole curtain 17 On the other side of the tower shaft 1 is the longer-wave dipole curtain 17 arranged; corresponding the larger wavelength is the distance of this curtain to the reflector curtain 19, which is also a quarter wavelength is larger.
- Dipole curtains 17 and 18 are shown in simplified form in FIG. 3 only with their central plane, in which the dipole lines of a curtain are stacked are arranged. The aforementioned distances between the dipole curtains and the reflector curtain refer to the center plane of the dipole curtains shown in FIG. 3.
- All tower arms 13, 14, 15 and the tower rail 16 are arranged in a vertical plane 30-30, the perpendicular on the curtain levels. To for the two side halves the curtains receive the same deflections, is in the embodiment described here plane 30-30 in the plane of symmetry of the antenna system arranged.
- level 30-30 is not apparent to the person skilled in the art the above symmetrization of the level 30-30 is limited. If there is no symmetrical deflection behavior level 30-30 can also be moved to one side of the Plane of symmetry be spaced.
- the curtain columns are designed in a known manner 22, 23 recognizable.
- the feed lines and tethers a column are to the right and left of this Center of column between upper support beam and lower extension arms 10, 11, 12 excited.
- the supporting beams of the columns hang on the roof ropes 27, 28.
- FIG. 5 is a top view of an alternative embodiment shown.
- the attachment points of the dipole curtains 17, 18 on tower arms 13, 14 are arranged in two levels 30-30, that are perpendicular to the curtain levels and which are spaced parallel to each other on both sides the plane of symmetry.
- In each of the two levels 30-30 are the attachment points arranged for one half of the curtains 17, 18, 19. This version is applicable when the enlarged Distance between the curtain halves of the radio frequency function doesn't hurt.
- FIGS 1 and 2 show that the upper boom 5 and especially the upper boom support ropes 6 above the Roof ropes 27, 28, 29 are arranged.
- the lower suspension cables 7 are laterally at a greater distance from the tower shaft 1 arranged when the edge ropes 24, 25, 26 have it.
- the lower boom 4 are how even in the prior art, below the Dipole and reflector curtains. Even with a very large deflection the curtains by wind it is therefore impossible that the booms 4, 5 or their upper and lower suspension cables Touch 6, 7.
- the attachment points of the curtains or the curtain halves on the tower are all in levels 30-30, can be by suitable pretensioning of the ropes using the selection the tension weights easily set up that the wind Dipoles and the reflector wires approximately parallel to each other are deflected so that the distances between the dipoles and reflector wires even at high wind speeds remain almost unchanged.
- the distance the tower rail 16 from the tower shaft 1 is so large that the on the tower rail 16 suspended reflector wires Arrangement of the rail in the plane of symmetry on the rail can be deflected about 45 degrees before the Touch the edge of the tower shaft 1. Without being uneconomical to be able to transfer large forces to the structure the antenna curtains and tension weights are dimensioned so that the deflection even at very high wind speeds remains low.
- the dipole curtains with others Number of dipole rows and columns, with whole-wave dipoles instead of half-wave dipoles or for other frequency ranges be executed; other numbers of Curtains can be provided.
- Others can Support means provided instead of the cantilever support cables 6, 7 in order to hold the booms 4, 5 in their position e.g. B. steel grid structures or bars.
- Can too the supporting parts with attachment points for attachment The curtains on the tower can be recognized in another by the expert Way as in the form of tower arms 13, 14, 15 and one Tower rail 16 may be designed, as far as this invention arranged attachment points available put.
Landscapes
- Support Of Aerials (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
- Fig. 1
- zeigt die Ansicht eines drehbaren Vorhangantennensystems mit einem Dipolvorhang und einem dahinter angeordneten Reflektorvorhang,
- Fig. 2
- zeigt dieses Antennensystem mit seinem langwelligeren, zweiten Dipolvorhang in der gegenüberliegenden (in Bezug auf Fig. 1) Ansicht unter Weglassung der Darstellung des Reflektorvorhanges und des kurzwelligeren Dipolvorhanges,
- Fig. 3
- zeigt die Draufsicht dieses Antennensystems,
- Fig. 4
- zeigt die Seitenansicht und
- Fig. 5
- zeigt die Draufsicht einer anderen Ausführungsvariante.
Claims (5)
- Drehbares Vorhangantennensystem, vorzugsweise zur Ausstrahlung hoher Sendeleistung im Kurzwellenbereich, mit mindestens einem Dipol- und mindestens einem Reflektorvorhang und mit einem um seine Längsachse drehbaren, zentralen Turmschaft, der Befestigungspunkte für den Reflektorvorhang aufweist und der dicht über dem Boden und in seinem oberen Teil mit je zwei mit Tragemitteln abgespannten, gegenüberstehenden Auslegern versehen ist , die zum Aufspannen der Dipol - und Reflektorvorhänge dienen, die mit ihrem einen Ende am Turmschaft befestigt sind, die unterhalb und oberhalb der Vorhänge angeordnet sind und Tragemittel aufweisen, die außerhalb der Aufspannflächen der Dipol- und Reflektvorhänge angordnet sind, dadurch gekennzeichnet, daß am Turmschaft (1) angebrachte Befestigungsmittel für eine vom Turmschaft beabstandete Befestigung der Dipolvorhänge (17,18) und der Reflektorvorhänge (19) in einer vertikalen Ebene(30-30) angeordnet sind, die lotrecht auf den Vorhangebenen steht.
- Drehbares Vorhangantennensystem nach Anspruch 1, dadurch gekennzeichnet, daß die Ebene (30-30) Symmetrieebene des Antennensystems ist.
- Drehbares Vorhangantennensystem, vorzugsweise zur Ausstrahlung hoher Sendeleistung im Kurzwellenbereich, mit mindestens einem Dipol- und mindestens einem Reflektorvorhang und mit einem um seine Längsachse drehbaren, zentralen Turmschaft, der Befestigungspunkte für den Reflektorvorhang aufweist und der dicht über dem Boden und in seinem oberen Teil mit je zwei mit Tragemitteln abgespannten, gegenüberstehenden Auslegern versehen ist , die zum Aufspannen der Dipol - und Reflektorvorhänge dienen, die mit ihrem einen Ende am Turmschaft befestigt sind, die unterhalb und oberhalb der Vorhänge angeordnet sind und Tragemittel aufweisen, die außerhalb der Aufspannflächen der Dipol- und Reflektvorhänge angordnet sind, dadurch gekennzeichnet, daß am Turmschaft (1) angebrachte Befestigungsmittel für eine vom Turmschaft beabstandete Befestigung der Dipolvorhänge (17,18) und der Reflektorvorhänge (19) in zwei vertikalen Ebenen (30-30) angeordnet sind, die lotrecht auf den Vorhangebenen stehen und die sich parallel beabstandet zueinander auf beiden Seiten der Symmertieebene befinden.
- Drehbares Vorhangantennensystem nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die beiden oberen Ausleger (5) unmittelbar über der Höhe, welche die Reflektorvorhänge (19) zur Erfüllung ihrer Funktion haben müssen, am Turmschaft (1) befestigt sind.
- Drehbares Vorhangantennensystem nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die oberen Ausleger (5) vom Turmschaft (1) ausgehend schräg nach oben mit oberen Auslegertragseilen (6) abgespannt sind, daß der Turmschaft (1) mit seiner Turmschaftspitze (31) die freien Enden der oberen Ausleger (5) in der Höhe überragt und daß die oberen Auslegertragseile (6) zur Turmschaftspitze (31) geführt sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4305972 | 1993-02-26 | ||
DE4305972A DE4305972C2 (de) | 1993-02-26 | 1993-02-26 | Drehbare Vorhangantenne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0613208A1 EP0613208A1 (de) | 1994-08-31 |
EP0613208B1 true EP0613208B1 (de) | 1998-04-15 |
Family
ID=6481414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94102391A Expired - Lifetime EP0613208B1 (de) | 1993-02-26 | 1994-02-17 | Drehbares Vorhangantennensystem |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0613208B1 (de) |
DE (2) | DE4305972C2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1085596A1 (de) * | 1999-09-10 | 2001-03-21 | Peter Dr.-Ing. Bruger | Drehbares Vorhangantennensystem |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2752387C2 (de) * | 1977-11-24 | 1981-09-24 | Brown, Boveri & Cie Ag, 6800 Mannheim | Kurzwellen-Drehantennen-Stand |
DE3241057A1 (de) * | 1982-11-06 | 1984-05-10 | Brown, Boveri & Cie Ag, 6800 Mannheim | Kurzwellen-drehantenne |
DE3246917A1 (de) * | 1982-12-18 | 1984-07-19 | Brown, Boveri & Cie Ag, 6800 Mannheim | Kurzwellen-drehantenne |
FR2591806B1 (fr) * | 1985-12-17 | 1988-06-24 | Thomson Csf | Antenne rideau a mat central et reflecteur a fils |
FR2671233B1 (fr) * | 1990-12-28 | 1993-03-12 | Thomson Csf | Antenne rotative a dipoles filaires. |
-
1993
- 1993-02-26 DE DE4305972A patent/DE4305972C2/de not_active Expired - Fee Related
-
1994
- 1994-02-17 DE DE59405672T patent/DE59405672D1/de not_active Expired - Fee Related
- 1994-02-17 EP EP94102391A patent/EP0613208B1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1085596A1 (de) * | 1999-09-10 | 2001-03-21 | Peter Dr.-Ing. Bruger | Drehbares Vorhangantennensystem |
Also Published As
Publication number | Publication date |
---|---|
EP0613208A1 (de) | 1994-08-31 |
DE4305972A1 (de) | 1994-09-01 |
DE4305972C2 (de) | 1998-02-05 |
DE59405672D1 (de) | 1998-05-20 |
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