EP3262709A1 - Radom sowie zugehörige mobilfunkantenne und verfahren zur herstellung des radoms oder der mobilfunkantenne - Google Patents
Radom sowie zugehörige mobilfunkantenne und verfahren zur herstellung des radoms oder der mobilfunkantenneInfo
- Publication number
- EP3262709A1 EP3262709A1 EP16705543.3A EP16705543A EP3262709A1 EP 3262709 A1 EP3262709 A1 EP 3262709A1 EP 16705543 A EP16705543 A EP 16705543A EP 3262709 A1 EP3262709 A1 EP 3262709A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radome
- composite film
- layer
- structures
- radom
- 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
Links
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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
- H01Q1/22—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
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
-
- 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
- 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
-
- 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
- Radome and associated mobile radio antenna and method for the production of the radome or the mobile radio antenna
- the invention relates to a radome and to an associated mobile radio antenna with a radome and to a method for producing the radome or the mobile radio antenna.
- Mobile radio antennas for base stations usually have a vertically extending conductive reflector, which may also be provided with longitudinal or Verti ⁇ kalraum extending and offset from the center to the outside webs, edge boundaries, etc., which are aligned at an angle or perpendicular to the reflector plane.
- a plurality of vertically offset radiators, radiator elements or radiator groups are arranged, which can transmit and / or receive, for example, in a polarization plane or in two mutually perpendicular polarization planes.
- the dual polarized radiators are at an angle of +45 deg. or -45 deg. aligned with the vertical (or horizontal), which is why we speak of X polarization emitters.
- radiators, radiator elements and radiator groups can be arranged side by side in one or more columns.
- antenna arrays which comprise several columns next to one another, generally also have a common reflector or a common reflector plate.
- Such antenna arrangements are usually housed in ei ⁇ nem radome, which serves to protect the radiator from the weather.
- the radome itself is permeable to electromagnetic waves and usually consists of a glass fiber reinforced plastic.
- the radome In widely used mobile radio antennas, the radome is generally designed in the circumferential direction as a closed overall housing, on the upper and lower end of which corresponding cover caps can be placed. Corresponding cable connections for the HF signals and / or for the control of antenna components (in For example, a downtilt angle) can be connected to the underside ⁇ side of the antenna and / or on the back of the antenna. It is known that mobile radio antennas are usually designed for radiation only in a specific sector, for example, for a sector of 120 deg. , 30 deg. or 180 deg. 30 deg. etc. Therefore, a high back-attenuation is often desired, which should be greater than 20 dB, often even greater than 25 dB or even greater than 30 dB.
- Such a structure has become known for example from DE 102 17 330 B4.
- FTBR antenna return loss
- FTSR side damping
- All reflectors side bars which rise from the respective reflector plane in the beam direction to the front. This results in a shell structure, wherein the outermost Re ⁇ reflector with its side bars the middle reflector and this surrounds the actual, the radiator-bearing reflector not only on the back, but also laterally and shields.
- JP 2005-033404 Al a radome for an antenna is shown, with reflector side bars, which rise from the Radom back in the beam direction.
- the reflector side bars are provided as plate-shaped strips on the outer skin of the radome.
- These plates can also be arranged at a certain distance from the rear wall of the radome on the side wall regions of the radome. It is even possible that these strip-shaped plates are attached to the transition region from the side surfaces of the radome to the front region, for which they must be slightly arcuate in cross section, since here the radome usually passes over an arc section from the side wall section to the front section.
- the conductive surface structure according to the DE 10 2005 005 781 Al or EP 1689022 Al is incorporated into the mate rial ⁇ of the radome, the radome to slight ter (compared with that state of the art, in which additional reflector plates are mounted in the distance to the radome se ⁇ ready).
- the incorporated in the Radommateri- al reflector should be better protected.
- the risk is to be counteracted that these reflectors detach from the wheel material again when heat is applied.
- the incorporated in the wheel material conductive surface structure for example, from a conductive fabric structure, in particular a form of a wire mesh structure, a hole structure, a grid structure, a felicitngit- terpatented or a metal foil consist of at least one side and preferably on both sides with a Paper existing or paper comprehensive layer is laminated.
- the object of the present invention is to provide a further improved radome and an associated mobile radio antenna with such a radome and a method of manufacturing the radome or of the mobile radio antenna to sheep ⁇ fen.
- the object is achieved according to the invention with respect to the radome according to the claim 1, with respect to the mobile radio antenna according to the in claim 17 and with respect to the method according to the features given in claim 18.
- Advantageous embodiments of the invention are specified in the subclaims.
- passive radiation structures formed on the surface that is to say the outer skin of the radome, are realized, in particular in the form of frequency-selective surfaces.
- this frequenzselek ⁇ tive surfaces (form the magnetic dipoles then) be implemented as the preferred passive radiation ⁇ structures preferably in the form of periodically arranged dipoles or periodically arranged slots.
- the difference is in the reflected or transmitted wave. Looking only at the transmission, a band stop filter can be realized with the electric dipoles. If you only consider the reflection, then you can use the magnetic dipoles to create a bandpass filter.
- passive radiation structures in particular in the form of the so-called frequency-selective surfaces, it is possible to choose a wide variety of designs, ie different structural forms. Preference is given to forms, for example in the form of the so-called Jerusalem cross or a hexagon loop. These passive radiation structures may be suitably applied to the outer skin of the radome.
- a Trä ⁇ carrier layer comprises a metal foil or metal layer adjacent to at least preferred.
- the radiation pattern can be specifically acted upon.
- the present invention therefore, only a relatively thin composite film having a Me ⁇ tallfolie or - layer adhered to the outer skin of the radome, preferably full-surface bonded.
- This process is easy and inexpensive to perform.
- the Schir ⁇ tion improving rear reflector are formed, as well as corresponding second reflector side webs when the metal foil is provided in the side region or in the side region of the radome.
- the side area also can be adjusted individually, which also applies to the dimensioning.
- the corresponding composite film may be adapted entspre ⁇ accordingly provided to the radome in the desired width.
- springn- this example NEN be formed as a single conductive surface structures on a backing layer serving as a plastic film.
- a corresponding metal layer or metal foil is provided which has certain recesses, such as Schiitzaus principles traditions in the metal foil or metal layer for generating passive radiation structures, wherein at least one intended plastic carrier layer for the metal foil preferably passes through the entire surface , So no recesses in the plastic film material.
- a self-adhesive composite film is used, whether ⁇ also the adhesive layer may be the same be separately applied separately on the outside of the radome and / or on the side to be glued of the metal foil or film combination prior to adhesion.
- the material film or layer of material comprehensive composite film can slightest material thicknesses aufwei ⁇ sen, for example, less than 1 mm, possibly even un ⁇ ter 0, 5 mm.
- the bonded composite film has a multilayer structure and comprises at least one carrier layer next to the actual metal layer.
- a carrier layer can be provided on each side of the metal layer, so that these composite films comprising at least three layers can then be adhered to the outer skin of the radome by means of a pressure-sensitive adhesive layer.
- the carrier layer is preferably made of polyethylene terephthalate (PET). It is therefore a thermoplastic produced by polycondensation from the family polyester.
- PET polyethylene
- the carrier film can also consist of polyethylene (PE), for example of PE-LD (LDPE), ie highly branched polymer chains with the formation of a comparatively lower density.
- the film easily arbitrarily far glued or at all desired areas, for example, over the entire length of the radome, and also in the side regions generally applied who the can ⁇ , can be compared to conventional solutions, also with respect to the incorporated in the radome material conductive surface structure very especially optimal shielding in the rear and / or side area of the radome, which not only In general, an improved antenna return, an improvement of the side attenuation, a lighter radiation waveform, but above all, an optimal shielding, for example, to a so-called Remote Radio Head (RRH) can realize, as he often nowadays between the back of the radome and example ⁇ as an antenna mast is provided separately.
- RRH Remote Radio Head
- the composite film can be cut to any desired size and placed. It is also possible to choose from a selection of different slides, each optimized for the specific application.
- Figure 1 is a schematic perspective view of a mobile radio antenna with a radome, which is attached to a mast;
- Figure 2 is a schematic perspective Thomasdar ⁇ position by an antenna with a inventions to the invention radome on the outer skin of the rear side and a partial area of the sidewall portions of the radome farkleb ⁇ th composite film that holds a metal layer environmentally;
- Figure 3 a cross section through an inventive
- FIG. 4 shows an excerpt cross-sectional view through the composite film adhered to the back of a radome and comprising a metal layer;
- Figure 5 a modified to Figure 3settingsbei ⁇ game
- Figure 6 a further cross-sectional view through a
- FIG. 8b corresponding illustrations to FIGS. 7a and 7b, but with the corresponding preferably passive radiation structures formed by cut-outs in the metal foil area, which is made metal-free;
- FIG. 9a shows a representation of passive radiation structures on the radome using periodically electric dipoles;
- FIG. 9b shows a representation of passive radiation structures on the radome using periodically magnetic dipoles
- FIG. 10a to 10c a first group A of rotationally symmetric passive radiation structures
- FIG. 12a is a diagrammatic representation of FIG. 12a
- FIG. 13 shows a representation of periodically arranged passive radiation structures which start in the sidewall region of the radome and via which
- Range of curvature extend into the adjoining edge region of the front
- FIG. 13a an enlarged detailed representation of a so-called
- FIG 14 shows a modified from FIG 14mony angeord- Neten Hexagon loop structures (hexagon);
- FIG. 14a is an enlarged detailed view of the hexagonal passive conductive structure as used in FIG. 15; and FIG. 15a
- FIG. 1 shows a schematic representation of a mobile radio antenna 1 is shown, for example, part of a Ba ⁇ sisstation.
- the mobile radio antenna 1 is held and adjusted via a mast 2, for example.
- the mobile radio antenna 1 comprises inside a reflector 3, not yet visible in FIG. 1, in front of which, as a rule, a large number of radiators, for example dipole radiators, patch radiators, etc., are arranged offset to one another in the vertical direction.
- radiators there may be any suitable radiators, radiator elements or radiator groups, as this principle, for example from the Vorveröf ⁇ fentlichungen DE 197 22 742 Al, DE 196 27 015 Al, US 5, 710, 569, WO 00/39894 or DE 101 50 150 AI are known.
- the radiator, radiator elements or radiator groups are housed protected below a radome 5, wherein the radome 5 is usually made as a one-piece body which is closed in the circumferential direction and a rather bulged front side 7, sowandab sections 10 and a tend sooner flat back 9 includes.
- the radome 5 is usually made as a one-piece body which is closed in the circumferential direction and a rather bulged front side 7, sowandab sections 10 and a tend sooner flat back 9 includes.
- At the top of an upper cap 11 is placed and fastened and at the bottom of a corresponding lower end cap 13 ( Figure 1).
- the lower end cap 13 often also consists of a metal flange on which the electrical connection
- Conclusions are provided for the antenna located in the antenna or other control devices to adjust, for example, a downtilt angle etc. under ⁇ differently.
- cables 8 are drawn in, which lead to the connections on the underside of the antenna cover. In this respect, reference is made to known solutions.
- FIG. 2 also shows a perspective, partially sectional view of the mobile radio antenna, with a radome closed in the circumferential direction, within which a conductive reflector 3 is accommodated.
- This is usually made of metal or metal ⁇ sheet.
- the reflector 3 may further comprise two reflector side wall sections or side wall webs 5a (reflector side wall webs) extending in the longitudinal direction and therewith usually in the vertical direction with a corresponding orientation of the antenna and positioned perpendicular or at a different angle relative to the reflector plane RE could be.
- each other the appropriate or desired for the mobile communications antenna elements 15 are arranged, which can radiate in egg ner polarization plane or in two planes of polarization, that is, send and receive.
- the emitters can transmit and / or receive in a single band or in a dual or multi-band mode.
- a single dual-polarized emitter 15 is partially visible in perspective, which consists of a dipole square 15 'and is mounted on the reflector 3 via an associated carrier 17.
- the above-mentioned conductive surface structure 39 in the form of a composite foil 41 comprising a metal layer or foil can now be applied over the whole surface or in partial surface areas on the outer side 19 of the radome, ie the outer skin 19 ' ,
- the corresponding composite film 41 is indicated by dashed lines in the cross-sectional ⁇ representation in Figure 3.
- the aforementioned composite sheet 41 can be included with the metal layer or metal foil example ⁇ as the entire surface on the back 9 and / or on the side wall portions 10 of the radome 5 at least with respect to a part of the height region of Hl to the overall height or Total thickness H (starting from the back 9 of the radome) may be formed, as is indicated by dashed lines in the Querterrorismsdarstel ⁇ ment according to Figure 3. Due to the attachment of the composite film on the outside 19 on the radome here is no delay.
- the metal structures in the composite film are optimally plat ed ⁇ , since the composite film in terms of their color ⁇ handy design may further be configured as desired, is also results in the advantage that the optical An ⁇ pressure of the antenna targeted through a desired design and / or by a preferred cut of the film can be changed.
- FIG. 4 a possible structure of the detail X shown in FIG. 3 is shown in an enlarged, fragmentary cross-section, which is fragmentary the composite foil 41 reproduces how it is glued on the remindsei ⁇ te 51 of the radome 5.
- the profile 5 'of the radome 5 can be seen in the cross-section, for example, as it is formed on the rear side 9 of the radome 5, for example.
- Glued since ⁇ up is the aforementioned composite film 41, the outboard, that is opposite to the radome 5, a plastic support layer 55, and then following the electrically conductive metal layer 57, and thereon an adhesive layer comprising at ⁇ closing 61, via which the composite film thus formed 41 on the material or the Pro ⁇ fil 5 'of the radome 5 is glued.
- the structure can also be such that the composite foil 41 is constructed from the outside in the direction of the outer skin 19 or surface 19 'of the radome 5. in that initially an outer plastic carrier layer 55 is provided, to which the side facing the radome 5 follows a metal layer 57 onto which a further plastic carrier layer 59 is provided, which then glues over the mentioned adhesive layer 61 on the outer surface 19 'of the radome 5 is.
- the conductive metal layer 57 may, for example, a copper layer, a brass layer, a Alumi ⁇ nium Anlagen or a tin or zinc layer consist.
- the metal layer or foil 57 is made of a material which does not comprise steel or iron, that is, consists of a stainless material.
- the plastic carrier layer 55, 57, in particular the au ⁇ . Communa ⁇ , chelate (PET, PETP) are made, so from a prepared by polycondensation of thermoplastic material preferably selected from the Fami ⁇ lie of the polyesters.
- the second plastic support layer to the radome material closer can be composed of Polyethylien (PE) examples of play, that is, from egg ⁇ nem prepared by chain polymerization of ethene thermoplastic.
- PE Polyethylien
- PE-LD highly branched polymer chains with low density
- PE-HD high density PE-HD PE
- LLDPE linear low-density polyethylene whose polymer molecule has only short branches
- HMW high molecular weight polyethylene
- UHMW mitt ⁇ sized molecular weight
- an adhesion promoter layer can still be provided between the respectively mentioned plastic carrier layer and the metal layer, which, however, is significantly thinner in relation to the individual plastic carrier layer or metal layer.
- the entire structure of the composite film 41 thus formed may be such that its thickness is less than 1 mm, in particular less than 0.9 mm, 0.8 mm, 0.7 mm, 0.6 mm, 0.5 mm, 0, 4 mm, 0.3 mm or 0.2 mm.
- the aforementioned composite foil 41 comprising the metal layer 57 is adhesively bonded to the outer skin 19 'of the radome until it extends into the side wall region 10 of the radome 5.
- the adhesive layer ends here, for example, at a height relative to the reflector plane RE of a reflector 3 mounted inside the radome 5, which comes to rest, for example, the position of the free web edges 3'a of the reflector side webs 3a.
- the composite film may terminate in size yet ⁇ rem or lesser distance from the reflector plane RE, so notwithstanding the amount of the freely ending web edges 3'a of the side webs 3a of the reflector. 3
- the metal foil or metal layer 57 include ⁇ de composite film 41 even more portions of the sidewall portions 10 of the radome to the outer skin covers or even circumferentially around the entire radome around is glued.
- the radiating elements and / or the composite ⁇ film can be asymmetric and / or arranged on only one side of the radome or generally provided symmetrically on either side of the radome 41 with or without hereinafter more fully ER- örterten radiating structures.
- the illustrated composite film 41 may preferably be adhered during a pultrusion process (extrusion process) in the corresponding production of the radome with integrated.
- the advantage of such a Pultru ⁇ sion process that thereby a radome listed glued laminated film 41 can be prepared in virtually an endless process. Also Nachbearbei ⁇ preparation steps or additional further steps are avoided. However, it should be noted that the Folienauf ⁇ brin supply can also take place in a further process step.
- the composite film 41 to be adhered would be suitably cut in certain sections and, for example, applied to the radome by means of a rolling mechanism, ie adhesively bonded. Preference is given here in turn to a self-adhesive or self-adhesive composite film 41.
- the outer skin or outer surface 19 'of the radome 5 is first provided with an adhesive layer (on the outer skin 19 at ⁇ play' an adhesive ⁇ layer of the radome is sprayed on) before then the plastic-metal foil 41 is glued.
- an adhesive or subbing layer on the side of the composite sheet 41 first be applied, with which the composite film 41 to be then adhered to the outer skin 19 'of the Ra ⁇ dome. 5
- a further advantage of a thus formed plastic-metal foil composite 41 that the plastic support layer mainly outside ⁇ lying 55 may be configured not only transpa rent ⁇ , but also even in color. It would even be possible to apply certain print images.
- the exterior design of a radome could additionally be designed, for example, in different colors with the least expenditure, or be provided with any desired patterns, printing contours, etc. It could also be printed advertising.
- the individual mobile radio antennas could be provided according to the appearance of the individual ⁇ nen mobile operators with their logos or typically used origin function triggering colors. It has already been explained, under reference ⁇ exception to Figure 6 that the aforementioned composite film with ⁇ can play as surround the entire Radom in the circumferential direction, that is covered.
- the composite film 41 when the composite film 41 is bonded around the entire radome 5 or is provided, for example, only on the front side 7 and / or on the side wall sections 10, the composite film with the at least one plastic carrier layer 55 or, for example, the one to ⁇
- at least two plastic carrier layers 55 and 57 do not additionally comprise a metal layer or metal foil 57 which is completely closed, but only metal layer sections or structures 157.
- These metal layer sections or structures 157 could, for example, be rectangular or rectangular as shown with reference to FIGS. 7a and 7b have cross-shaped metal structures 157, which are surrounded by a metal surface-free region 158.
- slot-shaped or cross-slot-shaped radiator structures in particular passive radiator structures, can be realized, especially on the front side of the radome.
- slot-shaped radiator structures in particular passive radiator structures, can be realized, especially on the front side of the radome.
- slot-shaped radiator structures could be formed, which serve a targeted beam shaping.
- the composite film is constructed 41
- the metal layer 57 is preferably quasi formed almost vollflä ⁇ chig, but that then recesses are formed 157 'in this vollflä ⁇ speaking metal layer, For example, again slot-shaped or cross ⁇ slot-shaped Ausstructureungs Quilten 157 ', about which also certain passive radiator structures generated who ⁇ can.
- passive radiator structures are particularly suitable for use in the sidewall region 10 of the radome 5.
- the above-mentioned electrically conductive surface structures 157 which are relatively small in area can be obtained be provided on the metal-free Jardinbeansen portions 158 of the composite film, preferably on the top or front side 7 of the radome 5.
- Slit-like structures preferably also in the form of recesses 157 '(which are formed at least only in the metallic layer from ⁇ that can be formed but also in the entire laminated film, that is, by setting all of the layers of the composite film) may preferably tenwandabroughen in the sides 10 of the radome can be implemented.
- a band stop filter can be created with the electric dipoles and a band pass filter with the magnetic dipoles.
- FIG. 9a schematically shows the use of periodic electric dipoles (that is to say conduction).
- the structures 157) and the figure 9b shows the use of periodic magnetic dipoles (ie of slots 157 ').
- the optimal size of the structures to be used depends on the one hand on the frequency (operating frequency of the corresponding mobile radio antenna) and the form of the structures used. Below will be explained with ⁇ schenliche examples of possible structures passive radiation ⁇ reference to the figures 10a to 12c. By selecting the structure, a specific narrowband or broadband radiator ⁇ formation can be achieved.
- FIGS. 11a to 11c show a second group of frequency-selective structural form B, which are referred to as loop structures, since they delimit an inner space 45. These so-called. Loop structures ( “Loop Types”) are generally smaller than the above structure forms A ( “center connected types”) and have the further advantage that they can be mounted as a group ⁇ today.
- This structure forms B typically have dimensions such that the order ⁇ fang this structure form is preferred in certain relation to the wavelength, preferably to the middle operation ⁇ wavelength of the transmitted frequency band, For example, a multiple of ⁇ / 2 with respect to the Be ⁇ drive wavelength or the average operating wavelength.
- Reference to the figures 12a to 12c are flat structural shape ⁇ C reproduced, namely the manner of a regular n-Polygonals or for example in a circular or disc-shaped, in which therefore the entire inner surface is completely enclosed.
- the first group A of the fre ⁇ quenzselektiven surface structure is rotationally symmetrical, with a 90 ° or 120 ° repetition period.
- the hexagonal structures not only have a 120 ° rotational symmetry but a 60 ° rotational symmetry.
- the circular or disk-shaped structures are point-symmetrical, that is to say they have a rotationally symmetrical design.
- a radome will be explained in RESIZE ⁇ ßeren detail with reference to Figure 13, where used in the representation according to Figure 13 in the transition area from the side wall portion 10 in the adjacent front region 7 of the radome 5 as a frequency-selective surface structure FSS, for example, a so-called. Jerusalem cross is offset with a periodic distance in the longitudinal direction of the radome to each other. It is therefore that representation which corresponds to FIG. 10c and is reproduced in enlarged detail on the basis of FIG. 13a.
- FSS frequency-selective surface structure
- ge ⁇ shows, by using a hexagon loop structure as with reference to FIG 11c on the one hand and in an enlarged view shown with reference to FIG 14a (the underlying portion of He- xagon loop structure could be made to the side surface be ⁇ restricts or a piece to be folded to the back side of the radome).
- This hex shaped structure (Hex) in the longitudinal ⁇ direction also formed at the transition area from the side wall 10 to the adjacent front side 9 via the DA between formed edge-like region of curvature 12 in the longitudinal direction of the radome 5, wherein the at ⁇ order of this honeycomb-shaped hexagon-loop structure so has been made that the individual periodically arranged frequency-selective surface structures FFS not only in the longitudinal direction L of the radome are offset to ⁇ ordered, but each successive with slight lateral offset, as can be seen from Figure 15.
- a leading and a trailing hexagon is arranged to a hexagon arranged therebetween so that the leading and the trailing hexagon structure form a 120 ° angle to each other.
- the respective structures 157 may be formed as conductive structures formed in the composite foil 41, i. on the at least one plastic carrier layer 55, 59 are formed. These conductive structures are thus located in a surrounding region on the at least one plastic carrier layer 55, 59, which is otherwise formed completely or substantially free of metal film.
- the structure 157 ' would also be embodied as electrically conductive and thus periodically electric dipoles, but as slot-shaped recesses 157' and thus as periodic magnetic dipoles.
- the metal layer 57 would also be in the transition region shown from the side wall region to the adjacent front region of the radome be present, in which case the corresponding described structures according to figures 13 or 14 are provided as Schiitzausström traditions 157 'in this metallically conductive layer.
- the aforementioned structures may be relatively densely packed to raised stabili ⁇ hen the filter effect.
- the aforementioned cross structures can also be positioned in a very approximate position relative to one another without touching each other.
- the corresponding structures can be arranged by offset so that the above-mentioned ⁇ higher arrangement density is achieved.
- the size of the structures including the line width can be varied within wide ranges, especially in adaptation to the frequency range of the mobile radio antenna used.
- JK1 10 mm to 100 mm, in particular 20 mm to 80 mm or 30 mm to 60 mm, in particular by 40 mm.
- JK2 10 mm to 100 mm, in particular 20 mm to 80 mm or 30 mm to 60 mm, in particular by 40 mm.
- JK3 0.5 mm to 40 mm, in particular 5 mm to 30 mm, into ⁇ particular 8 mm to 20 mm, particularly 10 mm to 14 mm.
- the lower limit with respect to this measure can be set so that the corresponding measure to ⁇ least 0.5 mm and preferably more than 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 7.5 mm, 10 mm , 12.5 mm, 15 mm, 17.5 mm, 20 mm, 22.5 mm, 25 mm, 27.5 mm, 30 mm.
- the corresponding dimension is less than 40 mm, in particular less than 37.5 mm, 35 mm, 32.5 mm, 30 mm, 27.5 mm, 25 mm, 22.5 mm, 20 mm , 17.5 mm, 15 mm, 12.5 mm, 10 mm.
- a hexagonal frequency-selective surface structure FSS can be used which has a diameter between two parallel opposite sides with the following values:
- the measure can preference ⁇ , more than 10 mm, in particular more than 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, 65 mm, 70 mm, 75 mm, 80 mm.
- preferred dimensions should be less than 80 mm, 75 mm, 70 mm, 65 mm, 60 mm, 55 mm, 50 mm, 45 mm, 40 mm, 35 mm, 30 mm, 25 mm, 20 mm.
- HS2 1 mm to 40 mm, in particular 5 mm to 30 mm.
- the corresponding measure for HS2 preferably before ⁇ more than 2 mm, particularly more than 3 mm, 4 mm, 5 mm, 7.5 mm, 10 mm, 12.5 mm, 15 mm, 17.5 mm, 20 mm, 22, 5 mm, 25 mm, 27.5 mm, 30 mm.
- the corresponding dimension is preferably smaller than 35 mm, 32.5 mm, 30 mm, 27.5 mm, 25 mm, 22.5 mm, 20 mm, 17.5 mm, 15 mm, 12.5 mm, 10 mm, 7.5 mm, 5 mm, 2.5 mm.
- HS3 0.5 mm to 20 mm, in particular 0.8 mm to 15 mm or 1 mm to 1.6 mm.
- the measure for HS3 should preferably be greater than 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 7.5 mm, 10 mm, 12.5 mm, 15 mm, 17.5 mm. Then it is advantageous if the corresponding dimension is smaller than 17, 5 mm, 15 mm, 12.5 mm, 10 mm, 9 mm, 8 mm, 7 mm, 6 mm, 5 mm, 4 mm, 3 mm, 2 mm.
- the gap distance HS4 to an adjacent hexagon loop structure may preferably vary between 3 mm and 20 mm, in particular 8 mm and 15 mm, preferably 10 mm to 14 mm.
- the explained structures are formed as mentioned in the composite film 41, so that the composite film, as already explained with reference to the other embodiments, in a pultrusion process (pultrusion) or separately subsequently, for example, preferably using a rolling mechanism on the surface or outside of the radome are glued targeted in certain selectable areas of the outside of the radome or surrounding the radome over its entire surface.
- FIG 15a in the form of a simple strip (rectangular strip) and with reference to FIG 15b, in the form of such a rectangular strip at its opposite Ends each a crossbar is provided.
- Two such, shown with reference to Figure 15b and rotated by 90 ° to each other arranged structures is ultimately the so-called, formed on the basis of Figure 13a Jerusalem cross.
- the mentioned composite foil can comprise and have not only one metal layer or metal foil but a plurality of metal layers, ie a plurality of metal foils, which may optionally be provided with the structures explained, also with different structures.
- This composite film with at least two or more metal layers or foils Me ⁇ with the optionally thereto provided or different provided structures can for example be arranged offset to one another.
- the attachment of the composite film is also possible on the radome such that, for example, on the back side and / or a part of the side wall regions, the composite film with the at least one metal foil or metal layer is applied more or less over the entire area, and here acts as a subreflector, and that other parts of the composite film formed with the mentioned structures exclusively to influence the stunning ⁇ beam shape accordingly.
- mixed forms are possible, which are realized on a radome.
- a common composite film may be provided, which is formed over the entire surface, especially in the rear region of the radome and in parts of the side region, and / or is provided with corresponding structures in certain side wall regions or on the front side. Any mixed forms are conceivable here.
- the mentioned invention has been explained on the basis of a composite foil, which preferably always has at least one plastic carrier layer.
- a composite foil which preferably always has at least one plastic carrier layer.
- This metal foil can also be provided with a self-adhesive adhesive layer.
- all explained advantages and embodiments are also understood that instead of one or more ⁇ re plastic carrier plies of composite sheet 41 is always only a metal foil without additional plastic support layers and films used is or is vorgese ⁇ hen.
- the used adhesive layer may also general ⁇ my be used an adhesive layer such that also allows in some other way to apply the composite film or the metal foil on the outer surface of the radome to anchor and to fix it firmly.
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015002441.8A DE102015002441A1 (de) | 2015-02-26 | 2015-02-26 | Radom sowie zugehörige Mobilfunkantenne und Verfahren zur Herstellung des Radoms oder der Mobilfunkantenne |
PCT/EP2016/053634 WO2016135080A1 (de) | 2015-02-26 | 2016-02-22 | Radom sowie zugehörige mobilfunkantenne und verfahren zur herstellung des radoms oder der mobilfunkantenne |
Publications (2)
Publication Number | Publication Date |
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EP3262709A1 true EP3262709A1 (de) | 2018-01-03 |
EP3262709B1 EP3262709B1 (de) | 2018-08-01 |
Family
ID=55404733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16705543.3A Active EP3262709B1 (de) | 2015-02-26 | 2016-02-22 | Radom sowie zugehörige mobilfunkantenne und verfahren zur herstellung des radoms oder der mobilfunkantenne |
Country Status (5)
Country | Link |
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US (1) | US10879602B2 (de) |
EP (1) | EP3262709B1 (de) |
CN (1) | CN107408753B (de) |
DE (1) | DE102015002441A1 (de) |
WO (1) | WO2016135080A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107819198B (zh) * | 2017-09-19 | 2020-03-20 | 上海华为技术有限公司 | 一种基站天线的馈电网络,基站天线及基站 |
CN108777359A (zh) * | 2018-05-24 | 2018-11-09 | 西安电子科技大学 | 基于频率触发机制的超材料天线罩 |
US11165146B2 (en) * | 2018-08-28 | 2021-11-02 | Commscope Technologies Llc | Base station antenna radomes with non-uniform wall thickness |
KR102402206B1 (ko) | 2019-01-18 | 2022-05-26 | 삼성전자 주식회사 | 백 로브 방향으로 방사되는 전파를 감소시키기 위한 금속 구조물을 포함하는 안테나 모듈 |
USD954688S1 (en) | 2019-03-06 | 2022-06-14 | Aptiv Technologies Limited | Radome |
CN115088133A (zh) * | 2020-03-11 | 2022-09-20 | 华为技术有限公司 | 自适应毫米波天线罩 |
CN111555029A (zh) * | 2020-05-18 | 2020-08-18 | 西安朗普达通信科技有限公司 | 一种采用柔性超表面薄膜改善天线阵列耦合性能的方法 |
CN111883926A (zh) * | 2020-06-04 | 2020-11-03 | 华南理工大学 | 一种可改善天线性能的天线罩及信号收发装置 |
CN111834735B (zh) * | 2020-07-28 | 2022-09-27 | 武汉虹信科技发展有限责任公司 | 一种阵列天线及基站设备 |
CN112310648B (zh) * | 2020-10-28 | 2022-05-10 | 福耀玻璃工业集团股份有限公司 | 一种车辆玻璃天线 |
CN112635990B (zh) * | 2021-01-05 | 2023-06-13 | 大连海事大学 | 一种数字电视发射天线罩 |
CN115483543A (zh) * | 2021-06-15 | 2022-12-16 | 上海诺基亚贝尔股份有限公司 | 天线模块及其制造方法 |
CN113894542B (zh) * | 2021-10-29 | 2024-03-12 | 温州圣彼得电子科技有限公司 | 一种射频头组装设备 |
CN116454624A (zh) * | 2022-01-06 | 2023-07-18 | 康普技术有限责任公司 | 多频带天线 |
CN116207508B (zh) * | 2023-05-05 | 2023-08-01 | 北京玻钢院复合材料有限公司 | 一种用于频率选择表面多夹层复合材料、制备方法及相控阵雷达天线罩 |
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KR0185962B1 (ko) | 1995-03-03 | 1999-05-15 | 구관영 | 안테나 측면 복사에너지를 최소화한 안테나 |
DE19627015C2 (de) | 1996-07-04 | 2000-07-13 | Kathrein Werke Kg | Antennenfeld |
DE19722742C2 (de) | 1997-05-30 | 2002-07-18 | Kathrein Werke Kg | Dualpolarisierte Antennenanordnung |
US6069590A (en) * | 1998-02-20 | 2000-05-30 | Ems Technologies, Inc. | System and method for increasing the isolation characteristic of an antenna |
DE19860121A1 (de) | 1998-12-23 | 2000-07-13 | Kathrein Werke Kg | Dualpolarisierter Dipolstrahler |
US6229496B1 (en) * | 2000-05-05 | 2001-05-08 | Radiovector U.S.A., Llc | Multiple element antenna from a single piece |
US6473057B2 (en) * | 2000-11-30 | 2002-10-29 | Raytheon Company | Low profile scanning antenna |
DE10150150B4 (de) | 2001-10-11 | 2006-10-05 | Kathrein-Werke Kg | Dualpolarisiertes Antennenarray |
KR100441146B1 (ko) | 2001-11-16 | 2004-07-22 | (주)하이게인안테나 | 이동통신 서비스용 중계기의 노치형 안테나 |
JP2005033404A (ja) | 2003-07-10 | 2005-02-03 | Hitachi Cable Ltd | アンテナカバー |
TWI249875B (en) * | 2003-09-19 | 2006-02-21 | Univ Nat Taiwan Science Tech | Method and apparatus for improving antenna radiation patterns |
US7079079B2 (en) * | 2004-06-30 | 2006-07-18 | Skycross, Inc. | Low profile compact multi-band meanderline loaded antenna |
DE102005005781A1 (de) | 2005-02-08 | 2006-08-10 | Kathrein-Werke Kg | Radom, insbesondere für Mobilfunkantennen sowie zugehörige Mobilfunkantenne |
US7180469B2 (en) * | 2005-06-29 | 2007-02-20 | Cushcraft Corporation | System and method for providing antenna radiation pattern control |
US7412765B2 (en) * | 2006-07-14 | 2008-08-19 | Auden Techno Corp. | Method of manufacturing a sticker type antenna |
CN102299404A (zh) * | 2010-06-28 | 2011-12-28 | 深圳富泰宏精密工业有限公司 | 电子装置壳体及其制作方法 |
US20130009846A1 (en) * | 2011-06-27 | 2013-01-10 | Triton Systems, Inc. | Insert for radomes and methods of manufacturing insert for radomes |
US9231299B2 (en) | 2012-10-25 | 2016-01-05 | Raytheon Company | Multi-bandpass, dual-polarization radome with compressed grid |
-
2015
- 2015-02-26 DE DE102015002441.8A patent/DE102015002441A1/de not_active Withdrawn
-
2016
- 2016-02-22 WO PCT/EP2016/053634 patent/WO2016135080A1/de active Application Filing
- 2016-02-22 US US15/552,712 patent/US10879602B2/en active Active
- 2016-02-22 CN CN201680008000.3A patent/CN107408753B/zh active Active
- 2016-02-22 EP EP16705543.3A patent/EP3262709B1/de active Active
Also Published As
Publication number | Publication date |
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CN107408753A (zh) | 2017-11-28 |
US10879602B2 (en) | 2020-12-29 |
US20180040948A1 (en) | 2018-02-08 |
DE102015002441A1 (de) | 2016-09-01 |
CN107408753B (zh) | 2019-12-06 |
WO2016135080A1 (de) | 2016-09-01 |
EP3262709B1 (de) | 2018-08-01 |
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