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
  • H01Q1/12—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
  • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
  • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
  • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
  • H01Q19/108—Combination of a dipole with a plane reflecting surface
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q21/00—Antenna arrays or systems
  • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
  • H01Q21/061—Two dimensional planar arrays
  • H01Q21/062—Two dimensional planar arrays using dipole aerials
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q21/00—Antenna arrays or systems
  • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
  • H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre

Definitions

• Antenna arrangement in particular for a mobile radio base station
• the invention relates to an antenna arrangement, in particular for a mobile radio base station, according to the preamble of claim 1.
• Antenna arrangements in particular for a mobile radio base station, have become known, for example, from WO 00/039894 A1.
• a vertically alignable reflector is described, on whose two vertically and mutually parallel outer side boundaries each one in the radiation direction and thus formed transversely to the reflector plane side web.
• a plurality of dipole arrangements which radiate in two planes of polarization oriented perpendicular to one another and which consist of so-called vector dipoles. These vector dipoles are designed structurally similar to dipole squares.
• the design and the feed are such that, in spite of the horizontally or vertically oriented dipoles, the dipole arrangement as a whole is called an X-pole ized antenna acts in which the two mutually perpendicular polarization planes are aligned at an angle of +45 'and -45' relative to the vertical or the horizontal.
• the dual-polarized radiators sitting in front of a reflector can be provided with a capacitive outer conductor coupling.
• each half of the two by 90 "twisted to each other lying symmetries are therefore perpendicular to the reflector plane extending axial bores introduced in the region with the reflector galvanically connected rod-shaped coupling elements 21 sit, which are surrounded by cylindrical insulators, on which with the total provided four axial holes and to 90 * twisted to each other arranged pairs of symmetry halves of the dual-polarized antenna element arrangement can be placed.
• Within two rod-shaped coupling elements can each have a inner scalariform moved to feed the two orthogonal polarizations of the radiator assembly from the rear side of the reflector forth.
• An emitter arrangement has also become known from EP 1 588 454 B1.
• a vertically alignable antenna arrangement with a reflector is described on the vertical lateral boundary lines two transverse and in particular perpendicular to the reflector plane in the beam direction projecting side webs are formed, between which sit in the vertical direction superposed dual polarized radiator.
• the laying of the inner conductor can be carried out as described in the aforementioned prior art.
• antenna arrangements with reflectors are known, on whose longitudinal side areas, that is to say on their longitudinal or vertical side areas, webs projecting forwardly from the reflector plane are provided, as can be seen, for example, from the prior publications WO 99/62138 A1, US Pat. No. 5,710,569 A or EP 0 916 169 B1 is.
• an electrically conductive reflector usually in the form of a metal sheet
• a printed circuit board can be used, on which the reflector is constructed.
• the electrically conductive ground plane is preferably omitted on one side of the printed circuit board or the base is also provided with an insulation in this area.
• a reflector for a radiator arrangement is not assembled from a plurality of sheet metal parts, but may consist of a casting, a deep-drawn part, a stamped part or a milled part.
• the reflector thus produced may also be formed at least with an additionally integrated functional part, which is integrally connected to the reflector.
• This functional part can be one or more housing parts for HF components. It is described how, for example, on the reflector back side, a housing attachment is produced in one piece with the reflector, in which supply lines can be accommodated for the supply of radiators arranged on the front side.
• the object of the present invention is, starting from the generic state of the art according to WO 2004/091041 Al to provide an antenna arrangement in which the risk of the occurrence of intermodulation products is minimized.
• the production-related assembly effort should also be as low as possible.
• the invention provides an improved antenna arrangement that can be manufactured easily and with high accuracy with exactly predetermined radiation characteristics while avoiding potential sources of interference such as unwanted intermodulation.
• the antenna arrangement according to the invention is characterized in that the at least one radiator arrangement and an associated reflector or at least one associated reflector frame are produced in common, in particular cast, ie consist of a common part or, for example, cast part.
• the velvet antenna arrangement at least one radiator arrangement and the reflector or the partial reflector or a reflector frame, which are formed from a common die cast part, in particular a metal diecasting part such as an aluminum casting. It is also possible to cast the entire arrangement of a dielectric material, in particular plastic material, and then to provide it with a metallized, ie electrically conductive surface.
• the antenna arrangement in its essential parts so for example with the mentioned radiator arrangement (ie, for example, the dipole and / or radiator halves and the associated support or Symmetriereinrich- device and the associated reflector or a partial reflector) is made of metal
• the essential parts of such an antenna arrangement comprising the radiator arrangement with the associated support means and / or balancing and the associated reflector or associated reflector part, consist of a jointly produced part, which can also be described as one-piece or in one piece , Frequently, parts produced in this way are also referred to as so-called "original molding processes".
• the reflector arrangement may also comprise at least one longitudinal and / or transverse web.
• the antenna arrangement according to the invention becomes particular When used as a base station for a mobile radio antenna, it usually comprises a plurality of spaced-apart radiator arrangements when installed in vertical alignment, so that such inventive, uniformly cast antenna with multiple radiators and / or radiator arrangements and the molded reflector or reflector frame two lateral comprises longitudinal webs extending in vertical direction (which may be arranged offset at a lateral edge or rather offset from the center). Furthermore, however, the antenna arrangement according to the invention may also comprise an upper and lower transverse web. If a plurality of radiator arrangements are arranged offset to one another in the direction of attachment, transversal webs can also be designed to extend between them, which are likewise cast in one piece with the entire antenna arrangement. An entire such antenna arrangement can thus be produced as a uniformly manageable casting.
• the with the reflector or the reflector frame cast with radiator assembly can also consist of dual-polarized radiator arrangements, which radiate in two mutually perpendicular polarization planes.
• cross-shaped dipole radiators could be used, but also so-called vector dipoles, as they are known in principle from WO 00/039894 Al.
• vector dipoles are used, as are known from WO 2004/100315 A1, in which the diagonally arranged ones belonging to each plane of polarization and considered individually in plan view are square or square square shaped radiator halves can be configured with a closed partial surface or even closed over the entire surface.
• corresponding recesses are provided in the region of the reflector plane in the region of these dipole or radiator halves. Namely, in the region of the individual dipole halves or radiator halves separating slots that merge into recesses of the radiator supporting symmetry or support means, preferably lying in the reflector plane holding webs or holding connections can be provided, about which held in the center emitter array held by the surrounding reflector frame is.
• the latter embodiment also offers the advantage that a corresponding tool can be used which has a cavity defining the upper surface during the casting process, which forms the lower surface of the respective dipole half or radiator half. This tool can then be pulled downwards, ie with a transverse component to the reflector plane through the corresponding fenk-shaped recess, wherein the entire radiator assembly is held by the mentioned holding webs or Haietteucunsabête, about which the radiator assembly is connected to the surrounding reflector.
• a reflector is formed without longitudinal and / or transverse webs, it would also be possible to remove tools laterally with a withdrawal movement parallel to the reflector plane during demolding, so that then the reflector plane could also be closed.
• the base of the symmetrization of the radiator arrangement with the reflector plane would be galvanic, i. be DC connected.
• the dual-polarized radiator arrangement and the associated reflector frame can be made of an electrically conductive material.
• the radiator assembly and the reflector frame may also be molded from a plastic or generally dielectric material, i. be poured, in which case the corresponding parts are provided with an electrically conductive surface layer.
• the abovementioned retaining webs or retaining connections between the support device and the radiator device and the reflector frame are designed to be electrically conductive.
• the radiator device and in particular its support device and / or the balancing and the reflector frame can be galvanically separated from each other.
• the antenna arrangement according to the invention with a reflector arrangement comprising preferably a plurality of radiators and a reflector frame with longitudinal and / or transverse webs can also be capacitively coupled to a ground area or capacitively coupled to a ground area arranged below the so-called reflector frame.
• a capacitive coupling of the reflector frame is preferably provided on a printed circuit board without galvanic connection between reflector and printed circuit board ground plane.
• the invention is characterized by a stable intermodulation-free connection.
• a precisely defined coupling between the ground plane of the printed circuit board and the reflector frame can be ensured within the scope of the invention by a clearly defined distance and / or by a clearly predefinable size of the coupling surfaces.
• the fully assembled unit consisting of the reflector frame and the associated radiator arrangement and the printed circuit board, forms a self-supporting unit.
• the Reflector frame and the base of the radiator arrangement or the radiator arrangements can be fixed on the board by any suitable means, for example by means of clips, by means of a double-sided adhesive tape, separate adhesive, etc.
• the ground surface on the printed circuit board is provided with a galvanic isolation from the reflector frame enabling insulating layer, for example in the form of a paint, in particular Lötstoplackes, a film or other plastic layer.
• insulating layer for example in the form of a paint, in particular Lötstoplackes, a film or other plastic layer.
• FIG. 1 shows a schematic three-dimensional representation of a basic type of antenna according to the invention with a dual-polarized radiator arrangement
• FIG. 2 shows an exploded view of the exemplary embodiment according to FIG. 1;
• FIG. 3 shows a corresponding schematic three-dimensional representation for a erfindungsge- antenna arrangement with three mutually offset and dual-polarized emitters
• Figure 4 is an exploded view of the embodiment of Figure 3;
• Figure 5 is a schematic cross-sectional view through a dual polarized radiator with a portion of the reflector assembly to illustrate the supply of the radiator;
• FIG. 6 shows an embodiment modified from FIG. 5.
• the basic type of an antenna arrangement according to the invention is shown, as it can be used for example for a mobile radio base station.
• the antenna arrangement comprises a reflector arrangement 1, in front of which a dual-polarized emitter or a dual-polarized emitter arrangement 3 is provided.
• this is a vector dipole which radiates in two mutually perpendicular planes of polarization P, which are perpendicular to the reflector plane and extend virtually diagonally through the corners of the emitter array which is formed quadratically in plan view.
• WO 00/039894 A1 With regard to the construction and the mode of operation of such a radiator type, reference is made, for example, to WO 00/039894 A1.
• any radiator or radiator type can be used within the scope of the invention, in particular Dipole radiators and / or patch radiators, as they are known for example from the prior publications DE 197 22 742 Al, DE 196 27 015 Al, US 5,710,569 A, WO 00/039894 Al or DE 101 50 150 Al.
• the antenna arrangement has a so-called reflector or reflector frame 11.
• This reflector or reflector frame 11 comprises a reflector surface 13, which will be referred to below as a coupling surface 13 'partly also with regard to an embodiment of the invention to be discussed later.
• This reflector surface 13 is provided in the embodiment shown with perpendicular to the reflector surface 13 extending longitudinal webs 15 and transverse webs 17 which are formed and / or provided in the embodiment shown on the outer boundaries of the reflector frame 11, but also offset from the outer boundaries of the reflector frame 11 further inward can, so that an outside of the webs 15, 17 projecting portion of the reflector remains.
• These longitudinal and transverse webs 15, 17 are also connected to each other at the corner regions 19.
• the longitudinal and transverse webs shown need not necessarily be aligned perpendicular to the reflector surface 13. Some of these webs can also run in a direction deviating from a 90 'angle to the reflector surface, for example, diverging or converging in the beam direction or rather inclined to the left or to the right, etc. In principle, there are no restrictions.
• the reflector surface 13 is provided with a recess 13a, which in the exemplary embodiment shown extends longitudinally. and transverse direction is dimensioned at least as large ' , as the dual-polarized radiator 3 with respect to its longitudinal and / or transverse extent.
• the cut-out surface with the formation of the corresponding recess 13a can be shaped as desired, ie it can deviate from the outer contour of the radiator and even comprise curved edge courses, so that the recess 13a thus formed is defined by curvy track sequences or by any other boundary lines.
• the two symmetries 21 (each symmetrical for each polarization of the radiator device 3) rotated by 90 ° have a base 121 connecting them together in FIG
• a supporting device 21 for the dipoles or radiators or dipole or radiator halves, etc. is used, the support means comprising corresponding slots 112 running axially from the top towards the base 121.
• the antenna arrangement according to the invention is characterized in that the at least one radiator arrangement and an associated reflector or at least one associated reflector frame are cast together, ie consist of a common cast part.
• the entire antenna arrangement comprises at least one radiator arrangement and the reflector or the partial reflector or a reflector frame, which are formed from a common casting, in particular die-cast part such as a metal die-cast part or an aluminum casting.
• the entire arrangement is also possible To cast a dielectric material, in particular plastic material and then to provide a metallized, ie electrically conductive surface.
• the window-shaped recess 13a provided in the reflector plane of the reflector frame 11, that is to say at the level of the reflector surface 13, is approximately square in plan view.
• this window-shaped, square configuration is subdivided into four partial openings 13 'a, namely centrally and transversely, in each case by the base 121 of the support device and / or symmetrization 21, i. in particular perpendicular to the side boundaries of the window opening extending retaining webs 131, which are cast together during the casting process of the antenna assembly with the radiator assembly and the reflector frame 11.
• the support device and / or balancing 21 and thus the entire radiator assembly 3 is connected to the reflector frame 11 and thus held.
• the width of the holding webs 131 corresponds to the slot width of the slots 123 in the carrying device and / or balancing 21, via which the overhead dipole or laser halves 3a are held.
• the thickness of the holding webs 131 can be chosen arbitrarily.
• the thickness of the holding webs 131 for example, the thickness of the coupling surfaces 13 or even the thickness of the base 121 of the support means and / or balancing 21, i. the carrier device 21 correspond.
• the slots 123 extend approximately to the surface of the coupling surfaces 13 and the surface of the holding webs 131, but can also above end up.
• the reflector frame 11 is made together with the entire radiator assembly 3 of an electrically conductive material, for example of a metal casting (aluminum but other materials come into consideration for this). It may also be a plastic part, which is then metallized, that has been coated with a metallic conductive surface.
• other production methods come into consideration, for example, a production of the reflector frame by deep drawing, milling or the like.
• the antenna arrangement with the radiator arrangement 3 and the reflector or reflector frame can also be produced by other production methods as a common part, for example by milling, optionally by deep-drawing, etc. Often, this is also referred to here as a so-called "archetype method".
• a design of the antenna arrangement with the above-mentioned retaining struts 131 and the slots 123 and the illustrated window-shaped recesses 13 'a has the advantage that, for example, a casting tool can be used which has cruciform walls, which are perpendicular after casting in the representation of Figure 1 can be deducted to the reflector surface upwards, about which the cross-shaped separation and Symmetrierschlitze and the inner further recesses 151 (which are required to lay supply cable here) can be pulled upwards, whereas another part of the casting tool through the four Opera multaushyroid GmbH 13th 'a can be deducted down. Only if at least transverse and / or longitudinal webs would be dispensed with. de, such a tool could also laterally, ie be deducted parallel to the coupling surface plane 13, so that then could be dispensed with the window-shaped recesses 13a in the amount of the coupling surfaces 13.
• Such a formed antenna arrangement is in itself, after the corresponding wiring has been installed in particular for feeding the radiator assembly, fully functional.
• a uniformly manageable, mechanically fixed overall arrangement consisting of a dipole radiator (in the illustrated embodiment of a dual-polarized dipole radiator) and a reflector frame is formed by the explained with reference to Figure 1 antenna arrangement.
• this antenna arrangement can also be completed even further, namely with an additional ground plane resulting in the overall reflector, which is formed on a substrate.
• the antenna arrangement can also comprise a printed circuit board 5, namely a so-called “printed control board” (PCB), which is preferably on the side facing the emitter side 5a, the so-called radiator or mass surface side 5a, is provided with a preferably full-surface electrically conductive ground surface 7.
• PCB printed control board
• the ground surface 7 is covered with an insulating layer 8, not reproduced in FIG. 2, for example in the form of a plastic or foil layer, a lacquer layer or so-called solder resist layer, etc.
• antenna arrangement with the radiator assembly 3 and the reflector frame 11 can be firmly connected to the circuit board 5, through all appropriate measures.
• An assembly of both parts can be done for example by fixing one of the printed circuit board back forth in the bottom, ie the base 121 of the support device and / or balancing 21 personallywarenden screw or other clip-like fasteners, wherein the support means and / or balancing 21, what the radiator elements 3a of the dual-polarized radiator 3, is capacitively coupled to the underlying ground surface 7 of the printed circuit board 5.
• the reflector frame 11 could also be connected to the printed circuit board by suitable mechanical measures.
• the reflector frame 11 is fixed by means of a double-sided adhesive film 9 on the upper side of the printed circuit board 5, wherein the adhesive film 9 in the illustrated embodiment with a window-like cutout 9 'is provided, the size and positioning of the cutout 13a in the coupling surface 13 of Reflector frame 11 corresponds or approximated.
• the adhesive film can also be continuous, ie without the standing mentioned window-like cutout 9 'be provided.
• a corresponding provided with a double-sided adhesive layer KIe- befolie 9 or another spacer may be provided so that between the bottom of the coupling surfaces 13 and the bottom of the base 121 to the underlying therewith covered with an insulating layer ground surface 7 of the printed circuit board 5, the same distance conditions and conditions are given.
• the ground surface 7 would be "bare" in this area.
• the base 121 that is to say the underside of the carrying device and / or balancing 21, could also be contacted galvanically with the ground surface 7.
• the above-mentioned double-sided adhesive tape 9 is used, whereby a fixed predetermined distance between the coupling surface 13 and the ground surface 7 ensures and at the same time a mechanically strong connection is realized.
• the reflector frame 11 with the printed circuit board 5 is a firmly connected self-supporting unit.
• a capacitive coupling is produced by the capacitive coupling of the reflector surface 13, which is therefore also partially referred to as the coupling surface 13 ', and the underlying ground surface 7 on the printed circuit board 5, which also for the longitudinal and / or transverse webs 15th 17 ensures the desired capacitive coupling of the ground plane.
• the corresponding antenna arrangement may also comprise a plurality of juxtaposed or superimposed in the mounting direction emitter assemblies 3, wherein such an antenna array is set up with the plurality of radiators usually in the vertical direction, so that the plurality of radiator arrays are arranged one above the other in a vertical plane spaced.
• the reflector frame can comprise a number of reflector fields 25 corresponding to the number of the radiator arrangement.
• the size of the antenna arrangement is as far as possible expandable.
• the double-sided adhesive tape 9 is preferably designed to be correspondingly long and provided with three recesses 9 1 , which correspond to the three recesses or windows 13 a with the respective four partial windows 13 'a in the three reflector fields 25 of the reflector frame 11.
• the bore 26 incorporated in the printed circuit board (see FIGS.
• this radiator device can be additionally fixed from below by screwing a screw into the base of the carrier device and / or symmetrizing the radiator device 13, similarly to the exemplary embodiment according to FIG , wherein preferably an electrically non-conductive screw is used, especially if the base of the support means and / or symmetrization of the radiator device 3 is to be capacitively coupled to the ground plane 7 of the printed circuit board 5.
• a double-sided adhesive film similar to the double-sided adhesive tape 9 is provided on the underside of the base 121, so that the bottom of the base 121 and the bottom of the coupling surfaces 13 sit at the same distance level to the top of the underlying printed circuit board 5.
• FIGS. 5 and 6 only in a schematic section through a corresponding radiator arrangement, as it is possible to supply a dual-polarized or, in a similar manner, a single-polarized radiator 3.
• the feeding is usually carried out by means of a coaxial cable which extends from the underside of the reflector through an axial bore 103 leading to the plane of the actual dipole and / or radiator halves 3a in the carrying device or symmetrization 21.
• a coaxial cable which extends from the underside of the reflector through an axial bore 103 leading to the plane of the actual dipole and / or radiator halves 3a in the carrying device or symmetrization 21.
• the coaxial cable is stripped so that the outer conductor, which is isolated in the axial bore 103 relative to the supporting and / or balancing 21, exposed and in the upper region then
• a solder 201 to the inner end of an associated dipole or radiator half 3a is electrically / galvanically connected.
• FIG. 5 essentially only the inner conductor 101b is shown in the drawings.
• the coaxial cable would thus be laid through the axial bore 103 from below upwards, the outer conductor, as mentioned, then at the upper end of the support means 21 via the solder 201 with the associated dipole or radiator half 3a is electrically-galvanically connected. Up to this point, the outer conductor is insulated from the support device 21.
• a coaxial feed cable would be connected such that the outer conductor is held at the lower end of the bore 103, for example at a soldering point 201 'and the inner conductor 101b is held only by an insulator and separated upward in the bore 103 is guided.
• the bore in the support device thus acts as an outer conductor, which surrounds the inner conductor 101b, so that quasi a coaxial feed line is formed, via which the dipole and / or radiator halves, which are connected electrically conductive to the carrier device usually as a common component are to be fed.
• the corresponding supply can also be effected capacitively, for example by a capacitive coupling between the base of the support and the ground or reflector surface.
• the associated feed line usually the outer conductor of a coaxial cable, connected in an area below the support means, which is preferably perpendicular to the reflector in plan view in that area below the dipole or radiator half, which is fed thereto.
• the inner conductor 101b usually connected to the inner conductor of a coaxial cable is generally angled approximately at the level of the dipole and / or radiator halves 3a by 90 ° or approximately 90 ° and leads to the adjacent inner end of the associated second dipole and / or radiator half 3a and is usually contacted there electrically by means of soldering 203.
• radiator halves 3a corresponding, wherein the second, to the first inner conductor 101b cross-extending inner conductor is arranged on a different plane, so that the two inner conductors do not touch in the middle, but are passed to each other.
• the end 101b 1 of the inner conductor 101b ends freely in a further axial bore 103, this further axial bore 103 being provided in the supporting and / or balancing device 21.
• the freely ending end portion of the inner conductor 101b is guided downward over a certain axial length in this further bore 103 and held in the bore 103 via an insulator 203 (similar to the corresponding insulator 203 for fixing the inner conductor 101b in the other axial bore 103). , whereby a capacitive or serial coupling with respect to the second dipole and / or radiator half 3a 'is accomplished here.
• the slots 123 extend to the lower level or base 121 of the carrying and / or balancing device 21.
• the height of this support and / or balancing device 21 or the slots 123 should preferably be in a range of about 1/8 to 3/8 of a wavelength
• the respective operating frequency band to be transmitted or to be received is located, preferably the height should therefore be 1/8 to 3/8 relative to the mean wavelength ⁇ of the frequency band to be transmitted or received, ie preferably about 1/4 ⁇ .
• the radiator height relative to the reflector ie with respect to the ground or reflector surface should not fall below a value of ⁇ / 10, with a restriction upwards basically does not exist, so that the radiator height could even be an arbitrary multiple of ⁇ .
• the slots 123 can then be adapted accordingly in their length.

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• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Aerials With Secondary Devices (AREA)
• Variable-Direction Aerials And Aerial Arrays (AREA)
• Details Of Aerials (AREA)
• Support Of Aerials (AREA)
• Mobile Radio Communication Systems (AREA)

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• 2006
  • 2006-08-10 DE DE102006037517A patent/DE102006037517A1/de not_active Withdrawn
• 2007
  • 2007-07-26 DE DE502007002072T patent/DE502007002072D1/de active Active
  • 2007-07-26 WO PCT/EP2007/006636 patent/WO2008017385A1/fr active Application Filing
  • 2007-07-26 AT AT07786354T patent/ATE449436T1/de active
  • 2007-07-26 ES ES07786354T patent/ES2334288T3/es active Active
  • 2007-07-26 EP EP07786354A patent/EP2050165B1/fr not_active Not-in-force
  • 2007-07-26 CN CN2007800264648A patent/CN101490902B/zh not_active Expired - Fee Related
  • 2007-07-26 PL PL07786354T patent/PL2050165T3/pl unknown
  • 2007-07-30 US US11/882,085 patent/US7679576B2/en not_active Expired - Fee Related

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