EP3025394A1 - Breitbandige omnidirektionale antenne - Google Patents
Breitbandige omnidirektionale antenneInfo
- Publication number
- EP3025394A1 EP3025394A1 EP14736620.7A EP14736620A EP3025394A1 EP 3025394 A1 EP3025394 A1 EP 3025394A1 EP 14736620 A EP14736620 A EP 14736620A EP 3025394 A1 EP3025394 A1 EP 3025394A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- antenna according
- feed
- reflector
- antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005404 monopole Effects 0.000 claims abstract description 55
- 230000005855 radiation Effects 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 65
- 239000002184 metal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000004020 conductor Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- 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
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
- H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
- H01Q13/085—Slot-line radiating ends
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/40—Element having extended radiating surface
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/007—Details of, or arrangements associated with, antennas specially adapted for indoor communication
-
- 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
Definitions
- the invention relates to a broadband omnidirectional antenna according to the preamble of claim 1.
- Omnidirectional antennas are used, for example, as indoor antennas. They are multiband capable and can radiate in a vertical and / or horizontal polarization orientation. As a rule, they are arranged in front of a base or ground surface, which can be designed as disk-shaped, for example. The entire antenna arrangement is further arranged below a protective housing, ie an antenna cover (radome).
- An omnidirectional and thereby vertically polarized antenna has become known, for example, from EP 1 695 416 B1.
- the known monopole radiator rises vertically above a base plate or counterweight surface, from which it is galvanically isolated.
- the vertically polarized monopole radiator thus, at least approximately comprises a conical or frusto-conical radiator portion (which with a diverging extension of the base plate or counterweight surface facing away) and / or a cylindrical or cup-shaped radiator portion.
- the counterweight surface is adjoined first by the cone-shaped or frustoconical radiator section facing away from the counterweight surface with its divergent extension, which then merges into a tubular radiator section.
- An omnidirectional indoor antenna comparable in this respect has become known, for example, from EP 2 490 296 A1.
- EP 2 490 296 A1 does not use a disc-shaped reflector, but instead uses a cone-shaped reflector arrangement which also tapers conically in the direction of monopole-shaped radiators.
- a broadband, dual-polarized omnidirectional antenna arrangement can also be taken from WO 2012/101633 AI as known. It can be mounted, for example, on a ceiling underside in a room. In front of a reflector, a dipole arrangement offset by 90 ° relative to each other is provided, which results in a square structure in plan view.
- each at 90 ° on the sides of a square in front of a reflector rising dipole radiator is still an electrically conductive, vertically aligned to the reflector plane and in contrast uplifting monopoly provided as a vertically polarized radiator, which also again, as in the above-mentioned prior art, a reflector remote cylindrical section and the reflector closer and in the direction of the reflector conically tapered cone section comprises.
- An omnidirectional antenna arrangement is also known from WO 2011/157172 A2 as known.
- a generic omnidirectional and dual polarized antenna arrangement is finally shown and described in DE 10 2010 011 867 B4.
- This generic broadband omnidirectional and thereby dualpolarized antenna has, in addition to a monopole-shaped radiator, which is vertically polarized, still a dual-polarized radiator arrangement.
- the monopole is designed as a cylindrical radiator arrangement, in the cylinder jacket in the circumferential direction offset lying each vertically extending slots are formed.
- the slots are excited in a preferred embodiment by means of Vivaldi antennas.
- the Vivaldi antennas thus serve both as a stand-alone horizontally polarized radiator element and as a feed device for the vertical slots, which causes an increase in the bandwidth.
- the object of the present invention is to provide a further improved omnidirectional and dual-polarized antenna on the basis of the aforementioned generic state of the art.
- the present invention again achieves a clear improvement over the conventional omnidirectional antennas.
- the omnidirectional antenna according to the invention is distinguished by the fact that it again has a much broader bandwidth with a total of reduced installation space required.
- the vertically polarized radiator can be easily used in a frequency range of 790 MHz to 960 MHz and from 1710 MHz to 2700 MHz.
- the horizontally polarized radiator device can be operated for example in a frequency range of 1710 MHz to 2700 MHz. But even these values are only exemplary, since the antenna according to the invention is not limited to these frequency ranges.
- the present omnidirectional antenna is furthermore distinguished by the fact that at least two Vivaldi antennas which are offset in the circumferential direction about a central axis are arranged in front of a reflector plane, for example a disk-shaped flat reflector plane. Above the level of this virus valdi antennas are then positioned the raonopole-shaped and vertically polarized radiator.
- the antenna according to the invention preferably comprises at least three or at least four Vivaldi antennas lying in the circumferential direction of the central axis. Vivaldi antennas are also known as tapered-slot antennas (TSA), which are fed via a slot line.
- TSA tapered-slot antennas
- the actual antenna is in this case a two-dimensional exponential horn, in which the slot-shaped structure running away from the feed point to the outside expands horn-like.
- the Vivaldi antennas according to the invention have the peculiarity that the slot that merges into the exponential horn does not extend exclusively in a plane parallel to the reflector, but the remaining, electrically conductive and the slot and the exponential horn bounding surfaces arcuate or gradations (buckling ) in the direction of the reflector.
- the monopole radiator may have any suitable shapes. Preferably, it is designed to be rotationally symmetrical about a central axis. In this case, it is preferably not only cylindrical, but at least slightly conical, so that its lateral surface is designed diverging from the side facing the reflector or the Vivaldi antennas toward its open side. It is also possible to use monopoles, which have a stepped or kinked outer contour, pass from a more divergent cone portion into a more easily diverging cone portion. Further modifications can be implemented.
- the shape of the monopole, the shape of the Vivaldi radiators and the distance to the reflector influence the radiation characteristics of the V and H pole radiators.
- Dual polarized antennas are mainly used for MIMO applications, which usually require the highest possible level of coverage in the far field. By a suitable choice of o.g. Parameter can be improved in this antenna, the congruence in the vertical diagrams.
- the most important advantages of the solution according to the invention are the reduction in the size of the antenna arrangement in which ken and the double use of the radiator elements and in the special form of the horizontally polarized radiator.
- the bandwidth of the vertically polarized radiator can also be increased by extending the counterweight surface to the reflector.
- FIG. 1 shows a spatial representation of the omnidirectional, dual-polarized antenna according to the invention
- a side view of the exemplary embodiment of Figure 1 three representations of a differently shaped monopole
- a plan view of the antenna according to the invention shown in Figures 1 and 2 a bottom view of the antenna with a quasi-transparent reflector
- an enlarged detail of Figure 5a an axial sectional view through the monopole and the central portion of the Vivalddi antennas to illustrate the feeding of the monopoly
- Figure 7 a plan view of the reflector below
- FIG. 8 shows a corresponding illustration to explain the feeding of the Vivaldi antennas
- FIG. 9 shows a vertical similar to FIG.
- FIG. 10 shows a corresponding illustration (side view) of FIG. 2, in which certain distances and heights are still drawn in, which serve for the description of dimension specifications with regard to the omnidirectional antenna explained.
- FIG. 1 shows the omnidirectional dual-polarized antenna, namely with a reflector 1, which is designed flat in the exemplary embodiment shown and has a disc-shaped, ie circular, structure in plan view.
- a reflector plane 1 ' is defined.
- four Vivaldi antennas 5 are provided at a distance above the reflector plane 1 'and are arranged at an equidistant distance from one another about a central axis Z (in FIGS. 4 and 5) perpendicular to the reflector plane 1'.
- the four Vivaldi antennas 5 used are each arranged offset by 90 ° about the central axis Z around.
- the central axis Z is in the embodiment shown centrally and centrally to the reflector 1 and / or centrally and centrally positioned to the four Vivaldi antennas 5 and thereby aligned at right angles to the reflector plane 1 'extending.
- the Vivaldi antennas 5 are arranged at a distance A ( Figure 9) in parallel alignment with the reflector plane 1 '.
- the monopole radiator 11 is arranged, which in the following is sometimes also referred to as monopole or radiator monopole 11. It is rotationally symmetrical to a perpendicular to the reflector plane 1 'sitting axis formed and positioned. This axis is also referred to below as a vertical axis V, which in turn is also perpendicular to the reflector plane l 1 in the embodiment shown. As will be seen below, the vertical axis V and the central axis Z are arranged parallel to each other but with slight lateral offset.
- the monopole radiator is - although it is cylindrical. may be designed in the form of a hollow or cylindrical shape - in the embodiment shown conical or formed in the manner of a truncated cone.
- the radiator jacket 13 is formed from its mounting side or bottom region 14, facing the Vivaldi antennas, out of the open end 13a, which is remote from the reflector, preferably in a conically widened manner.
- the monopole radiator 11 already shown in Figure 2 is again shown separately in its axial section. It can be seen that the monopole emitter 11 is closed at its lower, the Vivaldi antennas 5 facing end, by a flat bottom 12. The outer contour of the emitter monopoly 11 is in its bottom portion 14 even more towards Vivaldi antennas tapered, ie in the manner of a cone.
- This monopole emitter 11 can be held by means of a holding device 15, which can consist of a cylinder 15 ', for example, adapted in the cylinder interior to the outer contour or the shell 15 "of the monopoly 11 in the bottom region 14, with the monopoly Emitter 11 is immersed in the holding device 15.
- This holding device 15 is preferably electrically nonconductive, ie it consists of a dielectric material
- the mentioned cylinder 15 ' is furthermore positioned and held (at least indirectly) on the Vivaldi antennas.
- the monopole emitter 11 may also have other cross-sectional shapes.
- the lower he floor area 14 designed flat, so not only on its inside, but also on its outer bottom, so that there is an upwardly to the opening extended cup shape.
- FIG. 3c shows a further modification of a monopole radiator 11 in a side view. It can be seen that its radiator jacket 13 may have multiple bends at different heights, so that the conical or conical shape can be formed from the bottom 14 of the monopole 11 to the opposite, in the illustrated embodiment open top 23a with diverging wall sections at different angles ,
- FIG. 4 shows the upper side of the Vivaldi antennas and, on the basis of FIG. 5a, the underside of the Vivalvaldi antennas.
- FIG. 5b shows an enlarged detailed representation of FIG. 5a.
- Vivaldi antennas are so-called tape-red-slot antennas (TSA), ie so-called expanded slot antennas. These are broadband antennas. Often they are realized on a double-sided metallized substrate.
- TSA tape-red-slot antennas
- the power of the Vivaldi antennas is realized by means of microstrip lines.
- a dielectric or substrate 23 is designed plate-shaped in the form of a printed circuit board 9. In top sees this substrate 23, dielectric 23 or this printed circuit board 9 in the illustrated embodiment has a square shape and generally a regular n-polygonal shape, where n is a natural number> 2. It is a regular n-polygonal.
- the substrate may be made of any suitable materials. It is possible that the substrate is formed for example of a plastic body. In this case, the substrate itself may be more or less strong, ie inflexible or substantially non-flexible or deformable. But it is also possible that the substrate is formed of a flexible material, so that in total can be spoken of a flexible substrate. The conductive layers are then on this flexible substrate or in the form of coatings on said plastic body, when it forms the substrate.
- the mentioned Vivaldi antennas 5 are provided and formed.
- four Vivaldi antennas 5 are formed on this plate-shaped substrate 23 at a 90 ° distance in a circumferential direction offset from each other.
- the Vivaldi or Vivaldi-like antenna devices 5, ie in general the "tapered slot” antennas 5, in the exemplary embodiment shown include the abovementioned carrier material or substrate 23 (dielectric 23), in which, for example, on the upper side 23a facing away from the counterweight or reflector surface 1 , So on the side of the substrate 23, on which the monopole emitter 11 is disposed, a conductive layer 27 is formed, which offset by 90 ° in the circumferential direction offset radial slot-shaped or groove-shaped recesses 29 (see Figure 4).
- Each of the slot-shaped recesses 29 begins with a circular recess 33 usually adjacent to the vicinity of the center Z of the substrate 23, wherein of the four circular, also offset in the circumferential direction at 90 ° recesses 33 each outwardly funnel-shaped widening slot-shaped structure 29th goes out in the area of the substrate 23 is freed from a conductive layer.
- the slot line 29 'formed by the slot-shaped recess 29 is completed in a broadband manner, this circular clearance 33 preferably being long by a quarter wavelength (based on an average operating wavelength).
- the slot-shaped recesses 29, which widen outwards in the shape of a funnel extend in the radial direction, ie they are preferably symmetrical. metric to a through the center Z (through which the central axis Z extends) extending radial vector.
- edges 29 "of the slot-shaped recess (structure) 29 delimiting the slot lines 29 ' can be designed differently to adapt the broadband nature of the antenna 'bounding edges 29' can follow an exponential function.
- two slot feed lines 35a initially run in opposite directions initially with a radial line section 35a, to which two second line sections 35b extending at right angles and in opposite directions join at a further branch point 35 "in the embodiment shown.
- a third, again at right angles angled line section 35c, which intersects the respective slot line 29 'transversely and preferably vertically, is possible, as well as other curved courses of the feed lines 35.
- the strip line-shaped slot lines 35 on the substrate 23 are terminated with a corresponding surface element 35d which is triangular or circular-sector-shaped or a may be formed similar ( Figure 5b).
- the respective multiple angled portions of the feed slot lines 35 can be made running in the same direction in the circumferential direction, so that a next slot line section 35b and so on adjoin each radial line section 35a in the circumferential direction continuously in the same direction, whereas in the exemplary embodiment shown, the point of intersection 35 in each case two oppositely extending feed line sections emanate, which then each branch off again at a subsequent branch point 35 "in respective further line sections which intersect the slot lines for feeding.
- the slot feed lines 35 mentioned are formed lying on the lower side 23b of the substrate 23, that is to say facing the reflector 1, wherein the slot lines 29 'formed on the opposite upper side 23a of the substrate 23 are shown by dashed lines in FIGS. 5a and 5b ,
- the peculiarity in the exemplary embodiment shown consists in the fact that the slot-shaped structure 29, which widens in a funnel shape from the inside to the outside, is not continuous in one plane, corresponding to the substrate plane 23 ', to one end, but rather that the conductive layer 27, which also can be formed as a sheet 127, on the boundary edges 23 "(longitudinal and transverse sides) of the printed circuit board 9, that are extended beyond the substrate 23 and now, as can be seen by way of example from Figure 1 or Figure 2, via arcuate and / or kinks 43 if applicable. varying tilt angle in the direction of reflector 1 run.
- the slot width that the width of the funnel-shaped widening slot line 29 ', also in the transition region where the conductive layer 27 or the electrically conductive sheet 127, the printed circuit board plane 9 'leaves, maintained., that is, that the slots here also steadily un d continuously widen and the slot width is not distorted by the formation of corners or gradations. is continuously expanded.
- the exponential form from the plane is "projected" onto the sheet, so to speak.
- the plan view of the antenna shows a steady exponential curve.
- the formation may also be such that the conductive layer or surface 27 is formed on the substrate 23 at the latest at the transition into the outwardly extending extension 27a, for example in the form of a sheet metal extension 127a.
- the conductive layer 27 may be formed in the region of the substrate as a conductive layer on the substrate, and then on leaving the substrate 23 into a sufficient rigidity and load-bearing metal sheet 127 in the manner of a sheet metal extension 127a passes.
- a support structure may be provided, for example, using a dielectric, on which the electrically conductive layer 27 via the central and / or dining area 123, ie beyond the central or dining area 123 as electrically conductive layer is formed.
- the conductive surface 27, which may be formed as mentioned in the form of a conductive plate 127, down, ie inclined in the direction of reflector 1, the propagating through the slots 29 electromagnetic waves at the end of the slot (at the level of the substrate 23) (late testens) start to come off the conductive surface 27, 127. Specifically, however, the electromagnetic waves dissipate before they reach the plate. The location at which they detach is frequency-dependent and depends on the slot width of the site in question.
- Vivaldi antenna is a tapered-slot antenna with a coplanar structure in which on a dielectric 23 on both sides an electrically conductive structure is applied, whereby a radiation of the electromagnetic waves in a direction parallel to the plane of the dielectric is generated.
- the electromagnetic waves propagate in the respective slot-shaped structures 29 in the substrate plane 23 '(which is also referred to as the feed plane 123'), these electromagnetic waves then emerging from the conductive surfaces 27, 127 and replace, since the slot-shaped structures 29 delimiting electrically conductive surfaces 27 led out of the substrate or feed plane 23 ', 123' and aligned in the direction of reflector 1 aligned or carried away.
- the monopole emitter 11 shaped accordingly, ie be shaped differently. Due to the sloping flanks of the conductive surface 27, it is obvious that the monopole radiator 11 widens conically in accordance with its lower feed and anchoring point to its open end 13a remote from the reflector, so that the lateral surfaces 13 direction rather perpendicular to the inclined plane 27 'of the conductive layer 27 is aligned outside of the substrate 9 or less deviates from a vertical. This shaping is therefore desirable and preferred in order to achieve the highest possible congruence of the radiation patterns of the V and H pole emitters. With reference to FIGS. 6, 7 and 8, further possible feeds of the antennas are shown.
- the feed 45 for the monopole emitter 11 comprises a coaxial cable 45a, which extends through a hole la in the reflector 1 ( Figure 7) starting from the back of the reflector 1, wherein the bore la in axial extension the vertical axis V can be arranged, which represents the axis of rotation of the monopole radiator.
- the coaxial line 45a extends through the bore la in the reflector 1 and z.
- B. a subsequent, perpendicular to the reflector plane 1 'standing distance and then passes through a further hole 9a in the Leiterplati- ne 9 / substrate 23 and in the conductive layer 27.
- the coaxial line in the axial extension so straight on to the lower Feeding point 11c led to the monopole emitter 11.
- the inner conductor of the coaxial cable is connected there at the feed point IIa with the electrically conductive Monopolstrahier 11, usually soldered.
- the monopole radiator 11 consist of electrically conductive material or of a dielectric material, which is then coated with an electrically conductive layer.
- the outer conductor of the coaxial cable 45a is connected to the ground surface of the board of the Vivaldi radiator, ie with the conductive layer 27 and with the electrically conductive sheet 127.
- the feed 47 for the Vivaldi radiators is here only by way of example by means of a coaxial line 47a, the through a second bore lb from the back of the reflector 1 leads, said second bore lb to the central axis Z, that is offset to the center of the disc-shaped reflector assembly, that is, at least slightly offset, as can be seen from Figure 7.
- the coaxial cable will be continued in a vertical extension to the reflector plane 1 1 towards the substrate 23 where the coaxial cable 47a, the substrate 23 and the layer 27 in a second bore 23b passes off center (see Figure 7) and then above the conductive layer 27 via an arcuate return 47 b to be returned towards the substrate 23.
- the cable should be routed as close as possible to the conductive layer in order not to influence the radiation characteristics of V-Pol-Strahlers. Since the slot feed line 35 below the printed circuit board / substrate (ie the reflector 1 facing) is provided, ie below the ground plane forming the conductive layer 27 to avoid interference by the conical monopole emitter 11, the coaxial feed cable 47a at its connection end from above through a bore 27b in the electrically conductive layer 27 or in the electrically conductive sheet 127 and a coaxial bore 27c in the printed circuit board, ie the substrate passed, ie the inner conductor is performed here to soldering the inner conductor at the branch point 37 of the Vivaldi antennas 5 from above, which thus represents the Anspei - ses.
- the outer conductor is in turn connected to the ground surface, ie the conductive layer 27 (plate 127) galvanically connected, usually soldered. Since the cable routing underneath the Vivaldi spotlights has hardly any influence on the antenna characteristics, since this area is almost field-free, this simplified connection situation does not lead to a disadvantageous change the radiation characteristic of the omnidirectional, dual polarized antenna.
- the feed line 45 or the coaxial cable 45a for the monopole 11 as well as for the feed line 47 with the coaxial cable 47a for the Vivaldi antennas 5 can also be done in a different way than described.
- FIG. 9 in which the previously described Vivaldi antennas 5 are formed from a metal sheet 127, that is to say without the substrate or dielectric 23 mentioned in the previous exemplary embodiments. All Vivaldi antennas 5 of a corresponding antenna arrangement can be used to this extent consist of a common metal sheet 127, from which the entire assembly is punched and brought by edges and / or bending (generally deforming) in the desired shape.
- the layer 27 described on the basis of the preceding exemplary embodiments is therefore part of the metal sheet 127 in the variant according to FIG. 9.
- the reproduced monopole 11 and the associated feed or coaxial line 45 is and can also be formed in this embodiment of Figure 9 as explained with reference to the preceding embodiments.
- Antennas not via micro-lines, but by means of coaxial cable 147 done, for example, in the field-free space between the metal plate 127 of the Vivaldi Antennas 5 and the reflector 1 run and can be merged, ie, that the coaxial cable 147 in particular in the field-free space between the reflector 1 and the central and / or dining area 123 extend, which also consists of a metal sheet 127 in this embodiment.
- a common feed opening or feed 109 is provided at a corresponding opening in the reflector 1, through which a corresponding number of coaxial cables 147 are passed, wherein the outer conductor 147a in the feed plane 123 'with a sheet of metal 127th formed Vivaldi antennas (galvanic) are connected, and the inner conductor 147b (similar to the previous embodiments) to the feeders 35 leading or serve as feeders 35 and are formed accordingly, and thereby the recesses 29 in the form of the slot lines 29 'for feeding in the associated Vivaldi antennas 5, preferably perpendicular cross and thereby parallel to the feed plane 123 'run. Therefore, four coaxial cables 147 are provided in the embodiment shown when using four Vivaldi antennas.
- the supply of the Vivalvadi antennas 5, ie the Vivaldi radiators can also be effected in a different way than by means of microstrip lines.
- the level referred to in the preceding embodiments as the substrate level 23 1 is also referred to as a feed level 123 '.
- the substrate 23 or the electrically conductive surface 27 located thereon is arranged at a distance A from the reflector surface 1 ', this distance A being for example between 30 mm and 60 mm, in particular between 35 mm and 55 mm or between 40 mm and 50 mm. Values around 45 mm appear suitable.
- the overall height G of the entire dual-polarized omnidirectional antenna may be, for example, greater than 50 mm, in particular greater than 55 mm, 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, 90 mm, 95 mm, 100 mm ,
- the antenna according to the invention can be constructed very compact and in particular have a total height G which is smaller than 120 mm, in particular smaller than 115 mm, 110 mm, 105 mm, 100 mm, 95 mm, 90 mm.
- the actual height M of the monopole emitter 11 above the electrically conductive layer 27, 127 and thus above the substrate 23 may, for example, vary between 20 mm to 60 mm, in particular greater than 25 mm, 30 mm, 35 mm, 40 mm, 45 mm. However, this height is preferably less than 55 mm, 50 mm, 45 mm or 40 mm, for example.
- the opening width W of the monopole radiator 11 may, for example, be less than 60 mm, in particular less than 55 mm, 50 mm, 45 mm, 40 mm and in particular 35 mm. Values greater than 20 mm, in particular 25 mm, 30 mm or 35 mm prove to be favorable.
- the opening width W can be between 75% and 125% of the width Wl in the base region 12, 14, in particular between 80% and 120%, 85% and 115% or 90% and 110% or 95% and 105% , in particular about twice as large as the width Wl in the ground area.
- the length K that is, the edge length 23 'of the substrate 23, ie the printed circuit board 9, in the embodiment shown, between 30 mm and 70 mm preferably vary, so preferably greater than 35 mm, 40 mm, 45 mm. On the other hand, this edge length should be less than 65 mm, 60 mm or 55 mm to produce a compact antenna size. Values around 50 mm prove to be cheap.
- a circular reflector 1 whose outer dimension RD is greater than 200 mm, in particular greater than 210 mm, 220 mm, 230 mm or 240 mm.
- a compact antenna can be realized within the scope of the invention whose diameter dimension of the reflector 1 is less than 350 mm, in particular less than 330 mm, 310 mm, 300 mm, 290 mm, 280 mm, 270 mm and in particular less than 260 mm is. Values around 250 mm are possible.
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013012308.9A DE102013012308A1 (de) | 2013-07-24 | 2013-07-24 | Breitbandige omnidirektionale Antenne |
PCT/EP2014/001733 WO2015010761A1 (de) | 2013-07-24 | 2014-06-26 | Breitbandige omnidirektionale antenne |
Publications (2)
Publication Number | Publication Date |
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EP3025394A1 true EP3025394A1 (de) | 2016-06-01 |
EP3025394B1 EP3025394B1 (de) | 2017-08-30 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP14736620.7A Active EP3025394B1 (de) | 2013-07-24 | 2014-06-26 | Breitbandige omnidirektionale antenne |
Country Status (5)
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US (1) | US9748666B2 (de) |
EP (1) | EP3025394B1 (de) |
CN (1) | CN105393406B (de) |
DE (1) | DE102013012308A1 (de) |
WO (1) | WO2015010761A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105140628B (zh) * | 2015-07-20 | 2018-07-03 | 华为技术有限公司 | 一种微带全向天线及通信器件 |
US10042095B2 (en) * | 2015-07-30 | 2018-08-07 | Raytheon Company | Dual mode optical and RF reflector |
DE102016114093B4 (de) * | 2016-07-29 | 2020-01-16 | Huber + Suhner Ag | Breitbandige omnidirektionale Antenne, insbesondere für Schienenfahrzeuge und ein solches Schienenfahrzeug |
JP2020519136A (ja) * | 2017-05-04 | 2020-06-25 | 華為技術有限公司Huawei Technologies Co.,Ltd. | 二重偏波放射素子及びアンテナ |
CN110832699B (zh) * | 2017-09-12 | 2021-10-22 | 华为技术有限公司 | 双极化辐射元件和天线 |
CN109659674B (zh) * | 2019-01-23 | 2024-06-04 | 广东通宇通讯股份有限公司 | 一种通讯天线及其辐射单元 |
DE102019201029B3 (de) | 2019-01-28 | 2020-04-23 | Audi Ag | Antennenhaltevorrichtung für ein Kraftfahrzeug sowie Kraftfahrzeug mit einer Antennenhaltevorrichtung |
CN110112561B (zh) * | 2019-06-06 | 2024-01-02 | 昆山瀚德通信科技有限公司 | 一种单极化天线 |
EP4073881A1 (de) * | 2019-12-10 | 2022-10-19 | Huber+Suhner AG | Omnidirektionale horizontal polarisierte antenne mit hohem stromschutz |
CN112751177B (zh) * | 2021-02-02 | 2022-01-25 | 深圳市中天迅通信技术股份有限公司 | 一种高隔离度同极化的5g全频段全向天线 |
USD1026878S1 (en) * | 2021-04-15 | 2024-05-14 | Shenzhen Global Electronic Technology Co., Ltd. | HDTV antenna |
US11652298B2 (en) * | 2021-05-14 | 2023-05-16 | Vitesco Technologies USA, LLC | Vivaldi antenna wings |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH249408A (de) * | 1946-04-01 | 1947-06-30 | Patelhold Patentverwertung | Einrichtung zur Bestimmung der horizontalen Winkellage eines Empfängers. |
US6518931B1 (en) * | 2000-03-15 | 2003-02-11 | Hrl Laboratories, Llc | Vivaldi cloverleaf antenna |
US7298228B2 (en) * | 2002-05-15 | 2007-11-20 | Hrl Laboratories, Llc | Single-pole multi-throw switch having low parasitic reactance, and an antenna incorporating the same |
US7623868B2 (en) * | 2002-09-16 | 2009-11-24 | Andrew Llc | Multi-band wireless access point comprising coextensive coverage regions |
DE10359605B4 (de) | 2003-12-18 | 2006-05-24 | Kathrein-Werke Kg | Breitbandige Antenne |
US7271775B1 (en) | 2006-10-19 | 2007-09-18 | Bae Systems Information And Electronic Systems Integration Inc. | Deployable compact multi mode notch/loop hybrid antenna |
CN101694904B (zh) | 2009-10-16 | 2011-09-28 | 中国联合网络通信集团有限公司 | 移动通信网络室内分布系统中使用的全向吸顶天线 |
DE102010011867B4 (de) | 2010-03-18 | 2011-12-22 | Kathrein-Werke Kg | Breitbandige omnidirektionale Antenne |
US8570233B2 (en) * | 2010-09-29 | 2013-10-29 | Laird Technologies, Inc. | Antenna assemblies |
KR101872460B1 (ko) | 2011-01-27 | 2018-06-29 | 갈트로닉스 코포레이션 리미티드 | 광대역 이중 편파 안테나 |
CN102918711A (zh) | 2011-06-03 | 2013-02-06 | 华为技术有限公司 | 全向天线 |
-
2013
- 2013-07-24 DE DE102013012308.9A patent/DE102013012308A1/de not_active Withdrawn
-
2014
- 2014-06-26 EP EP14736620.7A patent/EP3025394B1/de active Active
- 2014-06-26 CN CN201480041505.0A patent/CN105393406B/zh active Active
- 2014-06-26 US US14/904,617 patent/US9748666B2/en active Active
- 2014-06-26 WO PCT/EP2014/001733 patent/WO2015010761A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2015010761A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN105393406B (zh) | 2018-07-27 |
EP3025394B1 (de) | 2017-08-30 |
WO2015010761A1 (de) | 2015-01-29 |
CN105393406A (zh) | 2016-03-09 |
US20160164190A1 (en) | 2016-06-09 |
US9748666B2 (en) | 2017-08-29 |
DE102013012308A1 (de) | 2015-01-29 |
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