EP2543111A1 - Structure antennaire à dipôles - Google Patents
Structure antennaire à dipôlesInfo
- Publication number
- EP2543111A1 EP2543111A1 EP11706290A EP11706290A EP2543111A1 EP 2543111 A1 EP2543111 A1 EP 2543111A1 EP 11706290 A EP11706290 A EP 11706290A EP 11706290 A EP11706290 A EP 11706290A EP 2543111 A1 EP2543111 A1 EP 2543111A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dipoles
- reflector
- horns
- dipole
- feet
- 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
- 229910052751 metal Inorganic materials 0.000 claims abstract description 51
- 239000002184 metal Substances 0.000 claims abstract description 51
- 239000004020 conductor Substances 0.000 claims description 8
- 230000010287 polarization Effects 0.000 abstract description 26
- 230000005855 radiation Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 abstract description 4
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
Definitions
- the present invention relates to a broadband antennal structure of the type comprising a dipole with two metal cones.
- the antennal structure may be used in reception for the interception of radio signals, or in transmission for broadcasting radio signals, particularly in the VHF and UHF bands.
- Directional antenna structures having several dipoles are known.
- such a dual polarization antennal structure comprises two first parallel strand dipoles forming a directional assembly with a vertical rectilinear polarization and two second parallel stranded dipoles forming another directional assembly for a horizontal rectilinear polarization.
- the strands of each dipole are collinear.
- the four dipoles are arranged along the sides of a square and fixed by four feet above a grid reflector panel much wider than the square.
- the operating frequency band of this antenna structure is narrow, for example between 174 MHz and 240 MHz, and thus much less than an octave.
- the radiation and gain performances of the antennal structures are strongly degraded over an octave.
- the reflector has dimensions much larger than the half-wavelength associated with the low frequency of operation.
- the object of the invention is to provide an antenna structure with two dipoles associated with a linear polarization, adapted to a wider operating frequency band and a smaller footprint for a predetermined low frequency of operation.
- the antenna structure is usable in a group of antenna structures having an omnidirectional radiation pattern for the entire operating frequency band.
- an antenna structure according to the invention comprising a flat reflector, two dipoles symmetrical with respect to a plane of symmetry perpendicular to the reflector and a dipole supply network, is characterized in that
- the length of the sides of the reflector is at most equal to half the wavelength corresponding to the low frequency of an operating frequency band
- each of the dipoles has two metal cones forming a vee, hollow metal feet are fixed transversely to the horns and on the reflector so that projections of the dipoles orthogonal to the reflector are contained in the reflector,
- the horns and the feet have lengths less than a quarter of the wavelength
- the supply network extends for each dipole in the foot of one of the horns and in said each dipole between the foot of said one horn and the small base of the other horn to feed the dipoles symmetrically.
- the antenna structure of the invention has dipoles and a reflector carrying the dipoles having small dimensions vis-à-vis the wavelength associated with the low frequency of operation.
- This characteristic associated with the vee shape of the horned dipoles confers a small footprint on the antenna structure and thus allows a grouping of several antenna structures according to the invention on a pylon, while providing a better omnidirectionality of the radiation patterns over a wide area. frequency band of at least one octave.
- the low losses and the good high power performance of the dipole horns, the vee shape, the positioning and spacing of the dipoles and their distances to the reflector as well as the orientation of the cones of the dipoles, for example frustoconical or truncated pyramidal, above the reflector contribute to obtaining radiation patterns and controlled gains on octave bandwidths.
- Various characteristics of the antenna structure set forth below in combination with those set forth above contribute to the improvement of these results.
- Each dipole may comprise a dielectric bent sleeve attached to the small bases of the horns, sealing one end of the supply network.
- the axes of the horns of each dipole and the axes of the feet of the horns may be situated on a plane perpendicular to the reflector, and the large bases of the horns may be closer to the reflector than the vertices of the ves formed by the dipoles. .
- the axis of one of the horns of each dipole and the axis of the foot of said one horn may be coplanar to the half-plane of an obtuse dihedron whose other half-plane is coplanar to the axis of the other horn of said each dipole and the axis of the foot of the other horn, and the large bases of two horns of the dipoles oriented towards one side of the reflector may be further apart than the vertices of the vés formed by the dipoles and may be closer to the reflector than the tops of the ves.
- the supply network can be advantageously embedded in the antenna structure without the use of visible cables or wires and while retaining the coaxial nature of the cable feeding the antenna structure and winding for example in a pylon whose top supports the antennal structure .
- parallel metal hollow sleepers may be attached to both sides of the reflector and each support the feet of two horns, and the feed network may extend from a connector attached to one of the cross between the two feet supported by said one cross member, to the dipoles through said one cross member and said two legs.
- the power supply network may comprise coaxial cables combined with impedance matching means and housed at inside said one crossbar and said two feet, the impedance matching of the dipoles and the supply network with the characteristic impedance of the coaxial cable feeding the antenna structure is facilitated when the power supply is in coaxial line having, as external conductor, the walls of said one crossbeam, said two feet and the horns supported by said two feet and, as inner conductor, metal cores centered in said one crossbeam and said two feet, and for each dipole a bent core passing centrally through the dipole from the level of the foot of the horn acting as an external conductor to at least one metal return element fixed in the vicinity of the small base of the other horn of the dipole.
- the impedance matching in each dipole can be achieved in particular by means of an impedance matching metal washer, acting as an iris at the small base of one of the horns, traversed without contact by the horn. bent core of the supply network in the dipole.
- the adaptation can also be done by successive modifications of the diameter of the metal core in different places inside the metal sleepers.
- the reflector may comprise a metal frame, for example square, and a wire mesh attached to the sides of the frame.
- the antennal structure can be used as a single unit as was presented above. However, its performance is optimized for use in bundling to provide an omnidirectional diagram.
- Several antenna structures according to the invention may be grouped by connecting two parallel sides of the reflector of each antenna structure to sides of the reflectors of two other antenna structures to form a polyhedral cage, having two parallel hollow faces, the dipoles being positioned at the outside the cage and oriented globally in a common direction.
- the hollow parallel faces are triangular equilateral for a group of three antennal structures or are square for a group of four antenna structures.
- An antenna structure according to the invention may be intended for operation with simple rectilinear polarization, as presented above. However, it may be intended for operation with two cross-polarized or circular or elliptically polarized polarizations, while covering a bandwidth of at least one octave.
- the antenna structure comprising a square flat reflector, two first dipoles symmetrical with respect to a first plane of symmetry perpendicular to the reflector, two second dipoles symmetrical with respect to a second plane of symmetry perpendicular to the reflector and the first plane of symmetry , a first power supply network of the first dipoles and a second supply network of the second dipoles, is characterized in that
- the length of the sides of the reflector is at most equal to half the wavelength corresponding to the low frequency of an operating frequency band
- each of the first dipoles has two metal cones forming a vee and supported transversely by first hollow metal feet fixed on the reflector so that projections of the first dipoles orthogonal to the reflector are contained in the reflector
- each of the second dipoles has two metal cones forming a vee and supported transversely by second hollow metal feet fixed on the reflector so that projections of the second dipoles orthogonal to the reflector are contained in the reflector
- the horns and the feet of all the dipoles have lengths less than a quarter of the length wave
- the first feed network has the first plane of symmetry and extends for each first dipole in the foot of one of said each first dipole horns and in said each dipole between the foot of said one horn and the small base of the another horn of said first dipole, for supplying phase to the first dipoles, and
- the second feed network has the second plane of symmetry and extends for each second dipole in the foot of one of said each second dipole cones and in said each dipole between the foot said one horn and the small base of the other horn of said each second dipole, for supplying phase to the second dipoles.
- the antenna structure with four dipoles may be such that for each first dipole, the axes of the horns and the axes of the feet of the horns are located on a plane perpendicular to the reflector, and the large bases of the horns are closer to the reflector than the top of the formed by said each first dipole, and
- the axis of one of the horns and the axis of the foot of said one horn are coplanar to the half-plane of an obtuse dihedron whose other half-plane is coplanar to the axis of the another horn and the axis of the foot of the other horn, and the large bases of two horns of the second dipoles oriented towards one side of the reflector are farther apart than the vertices of the vés formed by the second dipoles and are closer to the reflector that the vertices of vés formed by the second dipoles.
- first metal hollow sleepers fixed perpendicularly to two parallel sides of the reflector on one side of the reflector and each supporting the first feet of two horns of the first dipoles.
- the first power supply network can then extend from a connector fixed on one of the first cross members between the first two feet supported by said first cross member, to said first dipoles through said first cross member and said first two feet.
- second metal sleepers may be provided for the second supply network fixed perpendicularly to two other parallel sides of the reflector on another face of the reflector and each supporting the second feet of two horns. second dipoles.
- the second supply network can then extend from a connector attached to one of the second cross members between the two second feet supported by said second cross member, to said second dipoles through said second cross member and said two second legs.
- FIG. 1 is a perspective view of an antenna structure with two first dipoles and two second dipoles for orthogonal linear polarizations, according to the invention
- FIG. 2 is a view from above of the antenna structure showing in detail a first power supply network for the first dipoles and a second power supply network for the second dipoles;
- FIG. 3 is a view of the antenna structure with the supply networks, on the side of one of the first dipoles;
- FIG. 4 is a view of the antenna structure with the supply networks, on the side of one of the second dipoles;
- FIGS. 5 and 6 are views in perspective and from above of a cage grouping four antenna structures.
- FIG. 7 is a perspective view of a group of four stands according to FIG. 5.
- an antenna structure SA with a double polarization and two pairs of dipoles comprises two first dipoles in vee with cones 1 1 -12 for a first rectilinear polarization of the electric field, two second dipoles with cones 21 -22 for a second rectilinear polarization of the electric field orthogonal to the first polarization, and a square flat metal reflector 3 supporting the dipoles 1 1 -12 and 21-22 by tubular metal legs 13, 14 and 23, 24 fixed on square hollow metal crosspieces 15, 16 and 25, 26.
- the SA structure composed of the aforementioned elements is symmetrical with respect to an axis of symmetry ZZ perpendicular and central to the reflector.
- the first dipoles 1 1 -12 are arranged symmetrically with respect to a first plane of symmetry YY-ZZ perpendicular to the reflector and parallel to the first sides of the reflector.
- the seconds dipoles 21 -22 are arranged symmetrically with respect to a second plane of symmetry XX-ZZ perpendicular to the reflector and the first plane of symmetry YY-ZZ and parallel to the second sides of the reflector.
- a power supply network 4 of the dipoles 1 1 -12 and a supply network 5 of the dipoles 21 -22 are included in the feet 13 and 23 and the crosspieces 15 and 25.
- the structure is intended to operate in transmission and / or reception in a predetermined frequency band of an octave [f, 2f], included in the VHF and UHF bands, for example [100, 200] MHz or [200, 400] MHz.
- Each dipole 1 1 -12, 21 -22 as an antenna comprises two vee arms formed by identical metal cone cones 1 1 and 12, 21 and 22 and a dielectric elbow 17, 27 between the horns.
- the small bases of the frustoconical cones 1 1 and 12, 21 and 22 are fitted into the ends of the sleeve 17, 27.
- the sleeves 17 and 27 are made for example of fiberglass, or any other non-conductive electrical material not degrading the performance in impedance matching of the antenna structure.
- the sleeves consist of two half-shells having ends forming clamps around the small bases of the frustoconical cones.
- the sleeves participate in sealing the ends of the supply networks 4 and 5 in the cones.
- the large bases of the cones 1 1 and 12, 21 and 22 located opposite the sleeves 17, 27 are closed by thin circular plugs 18, 28.
- the plugs can be dielectric or metal and also participate in the sealing of the networks. feeding in the cornets.
- the horns January 1 and 12 of the first dipoles have dimensions different from those of the horns 21 and 22 of the second dipoles.
- the horns January 1 and 12 and the ends of the feed system 4 therein are sized and oriented so that the first dipoles radiate or pick up waves with the first rectilinear polarization in the frequency band [f, 2f].
- the horns 21 and 22 and the ends of the feed system 5 therein are dimensioned and oriented so that the second dipoles radiate or pick up waves with the second straight polarization in the band. frequency [f, 2f].
- the horns January 1 and 12 have small bases and large bases respectively larger than those of the horns 21 and 22 and are shorter than the horns 21 and 22.
- the ends of the tubular legs 13 and 14, 23 and 24 are welded to the horns 1 1 and 12, 21 and 23 at orifices substantially mid-length of the horns.
- the length of the horns and feet is less than ⁇ / 4, ⁇ being the wavelength corresponding to the low operating frequency f of the band [f, 2f].
- the length of the dielectric sleeves 17 and 27 is very small compared to the wavelength ⁇ .
- the waves relating to each dipole 1 1 -12, 21 -22 are more confined around the narrow portions of the dipole horns connected by the sleeve 17, 27 which is transparent to the radio waves and which seals the end of the supply network included in the dipole.
- the horns and sleeves may have a regular circular or polygonal cross section, for example hexagonal or octagonal.
- the cones can be made by rolling or folding a metal sheet or by discretizing the frustoconical profile by means of a frustoconical sheet of metal son stretched and welded to the bases of the cones.
- the horns, the reflector, the feet and the cross members may be for example aluminum or a light alloy so that the mass of the antennal structure is low.
- the orientations of the horns of the dipoles in vee 1 1 -12 and 21 -22 vis-à-vis the flat reflector 3 are also different to optimize the omnidirectionality of the radiated waves or captured by the pairs of dipoles 1 1 -12 and 21 - 22 for both polarizations.
- the obtuse angle cc1 of the bent sleeve 17 between the axes of revolution of the frustoconical cones 1 1 and 12 is greater than the obtuse angle cc2 of the bent sleeve 27 between the half-planes of an obtuse dihedral each containing the axis d a horn 21, 22 and the axis of the foot 23, 24 supporting the horn 21, 22.
- the axes of the frustoconical cones 1 1 and 12 of each first dipole and the axes of the feet 13 and 14 supporting these horns are located on a plane perpendicular to the reflector 3 and parallel to the plane of symmetry YY-ZZ, as shown in Figure 2.
- the large bases 18 of the horns are closer to the reflector 3 than the sleeve 17 to the top of the vee of the first dipole, as shown in Figure 3.
- the feet 13 and 14 of each first dipole 1 1 -12 are perpendicular respectively to the axes of the horns 1 1 and 12 of the dipole and form between them an angle of 180 ° - cc1.
- the dipole 1 1 -12 with its two feet is symmetrical with respect to the bisecting plane of the sleeve 17 perpendicular to the reflector 3.
- the axes of the horns 1 1 and 12 of the two first dipoles and their feet 13 and 14 are thus contained in plans parallel to each other and perpendicular to the reflector.
- the axes of the feet 23 and 24 supporting the horns 21 and 22 of each second dipole 21 -22 are perpendicular to the reflector 3 and each form with the axis of the overlying horn 21, 22 an acute angle ⁇ 2 greater than cc2 / 2, as shown in FIG. 4.
- the axes of the horns 21 and 22 are contained in a secant plane of the reflector, and the sleeve 27 at the top of the vee of the second dipole is further from the reflector than the large bases 28 of the reflector.
- horns 21 and 22 are inclined symmetrically with respect to the plane of symmetry XX-ZZ of the antenna structure above the reflector.
- the distance between the sleeves 27 of the second dipoles is smaller than the distance between the plugs 28 in the large bases of the horns 21, 22 of the second dipoles oriented towards a common side of the reflector and substantially equal to the distance between the sleeves 17 of the first dipoles.
- the spacing and the distance between the dipoles and the horn orientations make it possible to optimize the gain and the omnidirectionality of the grouping of each pair of dipoles 1 1 -12, 21 -22 over the entire frequency band of operation [f, 2 F].
- the angled shape of the dipoles also contributes to reducing the size of the antennal structure SA.
- the reflector 3 comprises a rigid square metal frame 31 formed by brackets and a wire mesh 32 fixed to the sides of the frame.
- the length of the sides of the frame is at most equal to ⁇ / 2.
- the mesh sides of the grid 32 are very small relative to the wavelength ⁇ so as to minimize the radiation towards the rear of the SA structure opposite the cones with respect to the reflector, while limiting the wind resistance and the weight of the structure.
- the mesh pattern of the grid 32 may be of any shape.
- the reflector is made by a solid metal surface, for example by a sheet.
- the antennal structure can be protected by a radome ensuring its sealing.
- the two crosspieces 15 and 16 and the two crosspieces 25 and 26 are perpendicular to each other and arranged parallel to the sides of the frame 31 respectively on the front and rear faces of the grid 32, and have fixed ends, for example screwed, to the sides of the frame which stiffens the grid and the frame. Ends of the legs 13 and 14 are welded at orifices respectively on the hollow crosspieces 15 and 16, and ends of the feet 23 and 24 are welded at orifices respectively on the hollow crosspieces 25 and 26.
- the sleeves 17 and 27 are located in the middle of sides of a rectangle close to a square, coaxial with the frame and
- the antenna structure SA more compact and allows a grouping of several antenna structures by arranging their reflectors side by side, as for example according to the antenna structure groupings shown in FIGS. 5 to 7.
- the power supply networks 4 and 5 are connected to the outputs of a directional coupler by coaxial cables whose ends are connected to coaxial connectors 41 and 51 having bases welded to the middle of the rear sides of the cross member 15 supporting one 13 of the feet of each
- the directional coupler is replaced by a 90 ° and wideband hybrid coupler connected to the coaxial connectors 41 and 51 by the coaxial cables so that the antenna structure operates with a circular polarization.
- the supply networks 4 and 5 are in coaxial lines having, respectively, as external conductors, the walls of the square-section crosspieces 15 and 25, circular section legs 13 and 23 of the dipoles 11 -12 and 21 -22 5 as well as frustoconical cones 1 1 and 21 and, as internal conductors, cylindrical cores made of metal, for example aluminum, centered in these crosspieces and feet by dielectric line centerers 151, 131 and 251, 231.
- the section of the metal cores of the coaxial lines in the crosspieces 15 and 25 and the feet 13 and 23 vary regularly in order to improve the impedance matching in the frequency band [f, 2f].
- the coaxial lines formed in the crosspieces 15 and 25 and the feet 13 and 23 may be replaced by coaxial cables combined with impedance matching means and housed inside the crosspieces.
- the part of the supply network 4 for a first dipole 1 1 - 12 comprises from the connector 41 a coaxial line section 42 with a core passing through the centralizers 151 in the crosspiece 15, a coaxial line section 43 with a core passing through the centralizers
- the metal mass return element 121 constitutes a
- Coaxial line termination and may be a transverse metal disk, or evenly distributed diametrical metal wires, fixed inside the horn 12.
- the portion of the supply network 4 for the other first dipole 1 1 -12 is identical to that described above and symmetrical thereof with respect to the plane of symmetry YY-ZZ
- the part of the supply network 5 for a second dipole 21 - 22 comprises from the connector 51 a coaxial line section 52 with a core passing through the centralizers 251 in the crosspiece 25, a coaxial line section 53 with a core passing through the centralizers 5 231 in the foot 23 of the dipole 21 -22 and having an end opening into the horn 21 of the dipole 21 -22, a coaxial line section 54 with a core passing through a dielectric center 21 1 in the horn 21 located between the foot 23 and the sleeve 27 and a metal impedance matching washer 271 located at the junction of the horn 21 and the dielectric sleeve 27, and a bent core 55 passing through the dielectric sleeve 27 of the dipole 21 -22 and having a fixed end in the center of a metal return element 221 fixed in the vicinity of the small metal base of the other horn 22 of the dipole 21 -22.
- the metal mass return element 221 is similar to the return element
- the part of the supply network 5 for the other second dipole 21 -22 is identical to that described above and symmetrical thereof with respect to the plane of symmetry XX-ZZ passing through the connector 51 fixed to the crossbar 25 .
- the metal washers 171 and 271 are respectively fixed to the small bases of the dipoles 1 1 and 21 and crossed without electrical and mechanical contact by the ends of the webs of the supply networks 4 and 5.
- the metal washers are dimensioned to optimize the adaptation impedance of power supply networks
- the first two dipoles 1 1 -12 are energized in phase and the two second dipoles 21 -22 are also
- FIGS. 5 and 6 four dual polarization antenna structures SA1 to SA4 each with a pair of first dipoles 11-12 and a pair of second dipoles 21-22, such as the antenna structure SA, are grouped together to form a cubic cage CG.
- the reflectors 3 of the antenna structures SA1 to SA4 are arranged on two pairs of parallel faces of the cubic cage.
- the arrangement of the reflectors 3 of the antenna structures SA1 to SA4 is maintained by arrangement of rods and bars (not shown) supporting the reflectors and fixed for example at the top of a pylon.
- Two parallel sides of the reflector frame 31 of each antenna structure may be connected to sides of the reflector frames of two other antenna structures.
- Two parallel faces of the cubic cage CG are hollow.
- the dipoles of the antennal structures SA1 to SA4 are outside the cage CG.
- the edges of the cage have a length substantially equal to the half-wavelength ⁇ / 2.
- the reflectors 3 of the structures SA1 to SA4 are placed vertically at the top of the pylon so that the hollow faces of the cage CG are horizontal, the first dipoles January 1 -12 are oriented globally vertically to radiate or pick up omnidirectionally waves with a vertical rectilinear polarization, and the second dipoles 21-22 are oriented horizontally horizontally to radiate or pick up omnidirectionally waves with horizontal linear polarization.
- FIG. 7 shows a group of four cages CG1 to CG4 each having four antenna structures SA1 to SA4 and hollow faces stacked coaxially with their fixed edges to each other.
- This stack of cages side by side is compact thanks to the angled shape of the dipoles and the arrangement of the dipoles not overlapping the sides of the reflectors of each antennal structure.
- the omnidirectional character of the group of cages appears in the central annular zone lighter than the zones side of the DR diagram between the two pairs of cages CG1 -CG2 and CG3-CG4.
- the invention also relates to any antenna structure having a single polarization having two horned dipoles January 1 -12 or 21 -22 fixed on a reflector 3 and all grouping of several antennal structures with single polarization.
- the two second horned vee dipoles 21-22, the feet 23 and 24, the crosspieces 25 and 26 and the feed network 5 are omitted in FIGS. 1-4 when the single polarization antenna structure comprises only the first two dipoles in vee with cornets 1 1 -12.
- the first two horned vee dipoles January 1 -12, the feet 13 and 14, the crosspieces 15 and 16 and the feed network 4 are deleted in FIGS. 1 to 4 when the single polarization antenna structure comprises only the two second dipoles in vee with cones 21 -22.
Landscapes
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1051557A FR2957194B1 (fr) | 2010-03-04 | 2010-03-04 | Structure antennaire a dipoles |
PCT/EP2011/053318 WO2011107597A1 (fr) | 2010-03-04 | 2011-03-04 | Structure antennaire à dipôles |
Publications (2)
Publication Number | Publication Date |
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EP2543111A1 true EP2543111A1 (fr) | 2013-01-09 |
EP2543111B1 EP2543111B1 (fr) | 2014-05-07 |
Family
ID=42983647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP11706290.1A Active EP2543111B1 (fr) | 2010-03-04 | 2011-03-04 | Structure antennaire à dipôles |
Country Status (3)
Country | Link |
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EP (1) | EP2543111B1 (fr) |
FR (1) | FR2957194B1 (fr) |
WO (1) | WO2011107597A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108461905A (zh) * | 2018-03-16 | 2018-08-28 | 成都锦江电子***工程有限公司 | 开放套筒振子天线 |
CN109301503B (zh) * | 2018-11-12 | 2024-01-30 | 深圳市安拓浦科技有限公司 | 一种小型集成天线 |
CN110233335B (zh) * | 2019-05-09 | 2020-09-04 | 哈尔滨工业大学 | 基于人工磁导体的宽带小型化低剖面双极化天线 |
CN110752438B (zh) * | 2019-11-05 | 2022-04-19 | 中信科移动通信技术股份有限公司 | 双极化fad辐射单元 |
CN112563732B (zh) * | 2020-12-01 | 2021-12-31 | 中国人民解放军63923部队 | 一种uhf-s双频段抛物面天线改造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19823749C2 (de) * | 1998-05-27 | 2002-07-11 | Kathrein Werke Kg | Dualpolarisierte Mehrbereichsantenne |
DE19860121A1 (de) * | 1998-12-23 | 2000-07-13 | Kathrein Werke Kg | Dualpolarisierter Dipolstrahler |
US6275181B1 (en) * | 1999-04-19 | 2001-08-14 | Advantest Corporation | Radio hologram observation apparatus and method therefor |
CN101425626B (zh) * | 2007-10-30 | 2013-10-16 | 京信通信***(中国)有限公司 | 宽频带环状双极化辐射单元及线阵天线 |
-
2010
- 2010-03-04 FR FR1051557A patent/FR2957194B1/fr active Active
-
2011
- 2011-03-04 EP EP11706290.1A patent/EP2543111B1/fr active Active
- 2011-03-04 WO PCT/EP2011/053318 patent/WO2011107597A1/fr active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2011107597A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2957194B1 (fr) | 2012-03-02 |
FR2957194A1 (fr) | 2011-09-09 |
WO2011107597A1 (fr) | 2011-09-09 |
EP2543111B1 (fr) | 2014-05-07 |
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