EP3664214B1 - Mehrfachzugriff strahlelemente - Google Patents

Mehrfachzugriff strahlelemente Download PDF

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Publication number
EP3664214B1
EP3664214B1 EP19212776.9A EP19212776A EP3664214B1 EP 3664214 B1 EP3664214 B1 EP 3664214B1 EP 19212776 A EP19212776 A EP 19212776A EP 3664214 B1 EP3664214 B1 EP 3664214B1
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European Patent Office
Prior art keywords
guide
excitation
horn
radiating element
radiating
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EP19212776.9A
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English (en)
French (fr)
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EP3664214C0 (de
EP3664214A1 (de
Inventor
Jean-Philippe Fraysse
Charalampos STOUMPOS
Hervé Legay
Ségolène TUBAU
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Thales SA
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Thales SA
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    • 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
    • H01Q13/02—Waveguide horns
    • H01Q13/025—Multimode horn antennas; Horns using higher mode of propagation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • 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
    • H01Q13/02—Waveguide horns
    • H01Q13/0208—Corrugated horns
    • H01Q13/0225—Corrugated horns of non-circular cross-section
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/064—Two dimensional planar arrays using horn or slot aerials

Definitions

  • the invention relates to the general field of antennas, in particular satellite antennas, in particular active antennas, array antennas or multibeam antennas.
  • antennas comprise several radiating elements, the invention relates more specifically to radiating elements with compact multiple accesses and high radiation efficiency.
  • An array antenna is made up of radiating elements which must respect certain characteristics. They must in particular have a radiating surface whose maximum dimensions depend on the operating frequency and on the desired angular spacing between the main lobe generated by the antenna and its array lobes. Taking these dimensional constraints into account, they must have the maximum surface efficiency, ie close to 100%.
  • the surface efficiency characterizes the coefficient between the directivity of the radiating element and that which would be obtained by a radiating aperture occupying the space allocated to the radiating element, and on which a uniform distribution of the electric field is imposed. Maximizing the area efficiency of the radiating elements helps to optimize array antenna gain and reduce sidelobe and arraylobe levels.
  • the gain will be maximized, and it will thus be possible to minimize the power of the amplifiers of the transmitting antennas or to maximize the G/T ratio of the receiving antennas.
  • the radiating elements must also have a small size and a low mass and/or the ability to be excited in a compact manner in single or bi-polarization and a passband compatible with the intended application.
  • a general problem which the invention seeks to solve consists in designing radiating elements which make it possible to obtain at the output of the radiating aperture an electric field which is as uniform as possible while respecting the imposed sizing constraints.
  • each radiating element must be compact and have a short profile.
  • the radiating element of the figure 1 comprises a first access waveguide 101 and a second waveguide 102 in the shape of a flared horn towards the radiating opening.
  • the section of the horn is square in shape. This type of known radiating element makes it possible to ensure a smooth transition between the signal guided via the access guide 101 and the signal radiated at the output of the horn 102.
  • the radiating element 100 of the figure 1 however, has the disadvantage of low radiation efficiency because it does not make it possible to obtain an electric field uniformly distributed over its opening. Indeed, the structure of the horn 102 only favors the propagation of the fundamental mode of the wave excited at the level of the access guide 101.
  • FIG. 2 schematically represents a profile sectional view of the radiating element 100.
  • the curve 103 schematizes the distribution of the density of the electric field radiated at the opening of the horn 102. As indicated on the figure 2 , the maximum energy of the radiated electric field is reached at the center of the opening while the energy decreases progressively from the center towards the edges of the opening.
  • the profile of the horn can be modified in the way described on the example of the picture 3 .
  • the horn 302 no longer has a straight linear profile but an undulating profile or so-called “spline” profile.
  • Such a profile consists in producing undulations on the wall of the horn 302 in order to excite and control the propagation of higher modes of the wave radiated inside the horn. This example is described in publication (1).
  • FIG 4 schematizes another example of radiating element 400 as described in publication (2).
  • an array of horns each having a small aperture is used in an attempt to achieve better overall radiation efficiency for the radiating aperture of the antenna.
  • the radiating element 400 thus consists of several sub-elements each comprising an access guide 401.411 and a horn 402.412 of the type described in figure 1 .
  • a power splitter 404 ensures the uniform and phased supply of the various sub-elements of the network.
  • the distribution 403 of the density of the electric field radiated at the opening of the horn array is also not uniform. In particular, it has a minima close to 0 at the center of the distribution.
  • the solution of the figure 4 has the advantage of using radiating sub-elements with a small opening and which therefore have a length that is markedly less than that of a radiating element of the type of figure 1 .
  • This solution thus makes it possible to develop compact radiating elements.
  • it does not make it possible to obtain a uniform distribution of the electric field on the radiating opening because, as schematized by the curve 403 on the figure 4 , the tangential electric field is canceled on the metal walls of this radiating element, and minimum levels of the electric field are identified between the various horns 402,412 which penalizes the overall radiation efficiency.
  • Another disadvantage of the solution of the figure 4 is that it requires the use of a power splitter 404 connected to the radiating sub-elements to supply them in phase. The splitter 404 must respect the mesh of the antenna and be very compact so as not to penalize the overall profile of the antenna.
  • FIG. 5 diagrams yet another example of radiating element 500 as described in US patent US6211838 .
  • This solution consists of a radiating aperture network supplied by a power splitter integrated in the horn 502 as the latter flares out.
  • This solution has a radiation efficiency comparable to that of the example of the figure 4 with the same drawback of electric field level minima between the different openings as illustrated by the electric field curve 503.
  • the radiating element 600 consists of several Fabry-Pérot cavities 603,613,604 which are superimposed, the assembly being fed by several access guides 602,612.
  • Each Fabry-Pérot cavity 603,613,604 is a metal cavity closed by a gate 606,616,626 which is configured to reflect part of the signal injected at the center of the cavity towards its periphery.
  • This approach achieves better surface radiation efficiency than the solutions described previously, as illustrated by the electric field curve 605.
  • it has the disadvantage of being difficult to apply over a wide frequency band while guaranteeing a good adaptation to the accesses.
  • the invention proposes a new type of radiating element which is based on the excitation of a single radiating opening by several accesses. Unlike a known array of radiating elements, the proposed radiating element comprises a horn common to all the ports which are coupled to the common horn at an excitation interface and via excitation guides.
  • the excitation guides In order to control the excitation and combination levels of the different wave propagation modes on the radiating aperture, the excitation guides also work in several modes. The excitation and the control of these modes in the excitation guides are obtained in particular thanks to their asymmetry.
  • the subject of the invention is a radiating element comprising at least two supply guides and a horn common to the at least two supply guides and having an excitation interface, each supply guide being separate from the other supply guides.
  • each power guide consisting of an access guide and an excitation guide connected to the access guide by an access interface and connected to the common horn by the excitation interface, each guide excitation being flared in the direction of the access interface towards the excitation interface, each excitation guide having no axis of symmetry
  • the at least two supply guides being identical and arranged symmetrically 'one with respect to the other with respect to a plane of symmetry of the radiating element, and the flare profile of each excitation guide is configured so as to control, in amplitude and in phase, the modes of propagation of a radiating wave propagated from each access guide to the output of the horn, so that the electric field obtained at the output of the horn is substantially uniform.
  • the splaying profile of each excitation guide is configured in such a way as to promote the propagation of a fundamental mode of propagation and of a higher propagation mode of order two in the guide. of excitement.
  • each excitation guide is configured so as to favor the propagation, in the horn, of several modes of propagation of odd orders, from the mode of fundamental propagation and of the second order upper propagation mode propagated in each excitation guide.
  • the flare profile of each excitation guide is configured so as to control the amplitude and the phase of each mode of propagation propagated in the horn so that the electric field resulting from the combination of all the propagation modes propagated in the horn is uniform at the output of the horn.
  • the radiating element according to the invention comprises at least four supply guides, the horn being common to four supply guides, the four supply guides being arranged symmetrically with one another with respect to two planes of orthogonal symmetry.
  • each supply guide is configured so that the longitudinal axis of an access guide is off-center with respect to the center of the opening of the excitation guide connected to the interface of excitement.
  • the radiating element according to the invention further comprises a power splitter to excite the access guides in phase.
  • a cross section of the excitation guide is of square, rectangular or circular shape.
  • the radiating element operates in mono-polarization or in bi-polarization.
  • each excitation guide has a continuous or discontinuous widening profile.
  • the common horn is axisymmetric.
  • each excitation guide has a flared profile on a first plane and an invariant profile on a second plane orthogonal to the first plane.
  • the invention also relates to a radiating device comprising at least four radiating elements according to one of the preceding claims and a secondary horn common to the four radiating elements and connected via a input interface to the openings of the respective horns of each radiating element.
  • the invention also relates to an antenna comprising a plurality of radiating elements or a plurality of radiating devices according to the invention.
  • FIG. 7 shows a diagram, in side view according to a longitudinal section, of an example of an antenna element according to a first embodiment of the invention.
  • the antenna element 700 comprises two supply guides coupled to a common horn 703 via an excitation interface 704.
  • the common horn 703 is, for example, an axisymmetric horn of square or rectangular section or circular, the choice of the section being made according to the dimensioning constraints of the network of antenna elements, in particular the mesh of the network.
  • Each power guide includes an access guide 701.711 coupled to an excitation guide 702.712.
  • the access guides and the excitation guides are, for example, produced in waveguide technology.
  • Each excitation guide is flared in the direction of the access guide towards the excitation interface 704.
  • an important characteristic of the antenna element is that each excitation guide has no axis of symmetry, in particular its longitudinal section (as shown in the figure 7 ) is asymmetric.
  • the two supply guides are identical and arranged symmetrically with respect to each other with respect to a plane of symmetry 706 and coupled to the excitation interface 704 as illustrated in the figure 7 .
  • the access guides 701.711 are, for example, guides with a square or rectangular or circular section with a straight profile.
  • the excitation guides 702.712 may likewise have a square, rectangular or circular profile, but they have an asymmetric widening profile. The widening profile of an excitation guide is dimensioned so as to effectively excite and control a combination of propagation modes of the wave at the exit of the radiating aperture 705 of the common horn 703.
  • FIG 8 diagrams a side view of an 800 feed guide identical to one of the feed guides described in figure 7 .
  • the 800 feed guide has the particularity of having an asymmetrical profile. More precisely, the axis 806 of symmetry of the access guide 801 is offset with respect to the axis 805 passing through the center of the opening 804 of the excitation guide 802, the axis 805 being orthogonal to the interface of excitement. In other words, the axis 806 of symmetry of the access guide 801 intersects the surface defined by the opening 804 of the excitation guide at a point which is not the center of the surface.
  • asymmetrical profile it is also meant that the excitation guide 802 has no axis of orthogonal symmetry, unlike the horns usually used in the known solutions.
  • a longitudinal section of an excitation guide (as shown in figure 8 ) has no axis of symmetry along the length.
  • the axis 805 is not an axis of symmetry since the flare profiles on the two sides of the axis 805 are not identical.
  • the splay profile of an excitation guide can be obtained by setting increasing values for the perimeters of the cross-sections of the guide according to planes orthogonal to the view of the figure 8 and which intersect the axis 805 in an increasing direction from the access guide 801 towards the excitation interface.
  • the asymmetry of the excitation guide requires that the centers of the cross sections of the excitation guide are not aligned on the same straight line perpendicular to the sections.
  • the cross-section of the excitation guide may have a variable perimeter with globally increasing values in the direction of the aforementioned axis 805 although locally the perimeter may decrease slightly.
  • FIG. 9 schematizes a perspective view of a first embodiment of the antenna element according to the invention.
  • the excitation guides 902.912 have a widening profile along a first plane and a straight profile along a second plane orthogonal to the first plane.
  • the radiating opening of the horn 903 is rectangular in shape with length a and width b.
  • an excitation guide 902.912 has no axis of symmetry, i.e. it does not exhibit invariance by rotation through an angle of 180° although it exhibits a plane of symmetry parallel to side a.
  • a general objective of the invention is to obtain, on the radiating aperture 903 of the radiating element 900, a uniform distribution of the electric field of the radiated wave.
  • the width b of the horn is less than ⁇ /2, with ⁇ the wavelength of the signal.
  • FIG 10 schematically represents the radiating aperture of the antenna element of the figure 9 with a uniform distribution of the electric field over the entire aperture. This uniform distribution is represented by arrows of the same thickness which reflect transverse components of the electric field of the same intensity. There figure 10 represents the desired distribution of the electric field on the radiating aperture.
  • FIG 11 represents a distribution of the electric field on the same radiating aperture but this time considering that only the fundamental mode TE 10 is propagated.
  • the energy of the electric field presents a higher level in the center of the opening than on the edges as it is represented on the figure 11 by means of arrows whose thickness, which reflects the intensity of the electric field, decreases from the center towards the edges of the opening, each arrow representing a transverse component of the electric field.
  • FIG 12 schematically represents a combination of several modes making it possible to obtain a substantially uniform distribution 1200 of the electric field. It is a question of combining in phase several modes TE m0 , with m an odd integer, with an amplitude ratio equal to 1/m between the upper mode TE m0 , m being at least equal to 3, and the fundamental mode TE 10 . Ideally, to arrive at a strictly uniform electric field, it would be necessary to combine an infinity of modes TE m0 , m being odd and varying from 1 to infinity. However, each higher mode is associated with a decreasing cutoff wavelength ( ⁇ c ) mn (given by relation (Eq.1)).
  • the modes whose cut-off wavelength is greater than the wavelength of the signal cannot propagate.
  • FIG 12 illustrates, on a diagram, the distribution of the electric fields of the TE 10 , TE 30 and TE 50 modes as well as the result 1200 of the aforementioned combination. The direction of the arrows gives the orientation of the electric field.
  • the invention consists, in particular, in generating and controlling the level of the fundamental mode and of the higher modes of odd orders at the output of the common horn to obtain a substantially uniform electric field 1200 on the radiating aperture.
  • the common horn is excited via an excitation interface fed by several excitation guides which each promote the propagation of several modes.
  • the access guides 701,711 are powered in phase via an excitation source (not shown on the figure 7 ).
  • the access guides 701,711 are dimensioned so that only the fundamental modes TE 10 propagate in the access guides.
  • the access guides 701,711 are waveguides having a rectangular section and a straight profile, the section being dimensioned in such a way that only the fundamental modes can propagate.
  • There figure 13 represented schematically the electric fields corresponding to the fundamental modes TE 10.1 , TE 10.2 respectively observed at the output of the first access guide 701 and of the second access guide 711. These fundamental modes are excited in phase.
  • the gradual widening of the excitation guides 702,712 then allows the higher order two-order mode TE 20 to propagate.
  • a fundamental mode TE 10 and a higher mode of order two TE 20 are propagated in each of the excitation guides 702.712 .
  • There figure 14 schematically represents the electric fields corresponding to the two-order modes TE 20.1 , TE 20.2 generated in the excitation guides 702.712.
  • the two-order modes TE 20.1 , TE 20.2 are excited in phase opposition due to the plane of symmetry 706 between the two excitation guides 702.712.
  • the propagation of the second order modes in the excitation guides 702,712 is favored by the asymmetrical shape of the excitation guides and the misalignment between an access guide and the opening of an excitation guide (such as illustrated at figure 8 ).
  • the fundamental and second-order modes generated in the excitation guides 702,712 a suitable combination of the odd-order modes (in the present example, fundamental, third-order and fifth-order modes) is obtained.
  • the even order modes (for example of order two or four) cannot be excited in the common horn due to the excitation symmetry of the common horn which is linked to the symmetry of the antenna element with respect to the plane 706.
  • the second order modes generated in the excitation guides are in phase opposition and require an asymmetrical structure to propagate. Naturally, they cannot propagate into the common turbinate 703.
  • each of the modes TE 10.1 , TE 10.2 , TE 20.1 , TE 20.2 , generated in the excitation guides 702.712 makes it possible to generate modes TE 10, TE 30, TE 50, in the horn common 703 (due in particular to the larger section of the common horn compared to the section of an excitation guide).
  • the controlled association of the modes TE 10, TE 30, TE 50 generated on the one hand from the fundamental modes TE 10.1 , TE 10.2 and the modes TE 10, TE 30, TE 50 generated from on the other hand, from the fundamental modes TE 20.1 , TE 20.2 makes it possible to approach the desired amplitude ratios between the different modes:
  • 1/3 and
  • 1/5 and also allows correct phase alignment of these different modes.
  • the control of the amplitudes and phase of the TE 10, TE 30, TE 50 modes generated in the horn 703 from the TE 10, TE 20 modes generated in the excitation guides 702,712 is obtained by the asymmetrical widening profile of a excitement guide.
  • the flare profile can be obtained by numerical optimization by means of a software simulator making it possible to simulate the propagation of the various modes of the electric field as well as their phase and their amplitude, as a function of the flare profile.
  • the flare profile of an excitation guide can be obtained by determining, for different points on the longitudinal axis of the excitation guide, the dimension of the section of the guide at this point, this dimension increasing with the widening from the access guide to the excitation interface with the common horn.
  • the splay profile of an excitation guide can be obtained for a discrete number of sections, resulting in a discontinuous "step" shaped profile as shown in Fig. figure 7 or the figure 9 .
  • the profile can also be continuous as shown in the figure 15 which represents a variant embodiment 1500 of the antenna element described in figure 7 .
  • the antenna element has a flared and asymmetrical profile only on one plane, with an invariant straight profile on the other perpendicular plane.
  • the antenna element 1600 can also have a flared and asymmetrical profile on the two orthogonal planes in order to increase the radiation aperture.
  • the section of an excitation guide is rectangular.
  • the section of an excitation guide can also be square or circular, then allowing operation of the antenna element in bipolarization.
  • the excitation guides make it possible to propagate transverse modes TE 0n in addition to the transverse modes TE m0 described previously for the case of a guide of rectangular section.
  • the electric field can propagate with modes in the two perpendicular directions as shown in Fig. figure 17 for the case of the fundamental modes TE 10 and TE 01 and a square waveguide section.
  • the antenna element is not limited to operation with two ports as described so far. It may comprise a number greater than two of supply guides, preferably a number equal to a power of two.
  • the antenna element 1800 may comprise four feed guides 1801,1802,1803,1804, arranged symmetrically with respect to two orthogonal planes of symmetry, and a common horn 1810.
  • Each feed guide comprises an access guide and an asymmetrical excitation guide.
  • FIG 19 describes yet another embodiment of the antenna element 1900 this time comprising 16 supply guides arranged in groups of four. Each group of four feed guides is arranged as on the antenna element 1800 of the figure 19 .
  • the horn is common to the eight feed guides making it possible to further increase the radiating aperture.
  • the common horn may be composed of several levels or stages.
  • This principle is illustrated in the figure 20 by a side view of an antenna element with sixteen feed guides.
  • the antenna element 2000 of the figure 20 includes a common horn made up of five elementary horns, three of which are visible in the profile view of the figure 20 .
  • Four elementary cones 2001,2002 are positioned above the four sets of four feed guides.
  • Another elementary horn 2003 is positioned above the four horns 2001,2002 of the first level.
  • the 2003 cone of the second level combines the four cones 2001,2002 of the first level.
  • the principle described in figure 20 can easily be extended to cones arranged on more than two levels.
  • the antenna element may comprise three levels of horns, a first level with 16 horns each being common to four feed guides, a second level with 4 horns and a third level with a cornet.
  • the access guides must be excited in phase.
  • a power splitter can be coupled to the inputs of the access guides.
  • FIG 21 represents an example of an antenna element 2100 with two ports and operating in mono-polarization.
  • the in-phase excitation of the two access guides is carried out by means of a power splitter 2101 which mainly comprises an H-plane junction 2102 and matching sections 2103 to interface the H-plane junction with on the one hand the access guides of the antenna element and on the other hand the source of excitation.
  • FIG 22 represents another example of an antenna element 2200 with four ports operating in bi-polarization.
  • the four access guides are coupled to a power distributor 2201 which distributes to each access guide a signal fraction of each of the two polarizations with the same amplitude and the same phase.
  • An example of a power splitter adapted to fulfill this function is a splitter comprising four ortho-mode transducers of the type described in the Applicant's French patent application filed under the number FR1700993 .
  • the power splitter is separate from the antenna element and does not make it possible to generate higher order propagation modes.
  • the power splitter is integrated into the antenna element 2300.
  • the functions of power splitting and excitation of the propagation modes are combined and provided jointly by the same device in waveguide technology.

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  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Escalators And Moving Walkways (AREA)
  • Photovoltaic Devices (AREA)

Claims (15)

  1. Strahlungselement (700, 800), das mindestens zwei Versorgungsleiter und ein den mindestens zwei Versorgungsleitern gemeinsames Horn (703) umfasst und eine Erregungsschnittstelle (704) aufweist, wobei jeder Versorgungsleiter separat von den anderen Versorgungsleitern ist, wobei jeder Versorgungsleiter aus einem Zugangsleiter (701, 711, 801) und einem Erregungsleiter (702, 712, 802) gebildet wird, die über eine Zugangsschnittstelle mit dem Zugangsleiter (701, 711, 801) verbunden ist und über die Erregungsschnittstelle (704) mit dem gemeinsamen Horn (703) verbunden ist, wobei jeder Erregungsleiter (702, 712, 802) in der Richtung von der Zugangsschnittstelle zur Erregungsschnittstelle (704) aufgeweitet ist, wobei jeder Erregungsleiter (702, 712, 802) ohne Symmetrieachse ist, wobei die mindestens zwei Versorgungsleiter identisch und symmetrisch zueinander in Bezug auf eine Symmetrieebene des Strahlungselements angeordnet sind.
  2. Strahlungselement (700, 800) nach Anspruch 1, wobei das Aufweitungsprofil jedes Erregungsleiters (702, 712, 802) zum Steuern, in Amplitude und in Phase, der Ausbreitungsmoden einer von jedem Zugangsleiter (701, 711, 801) bis zum Ausgang des Horns (703) ausgebreiteten Strahlungswelle konfiguriert ist, so dass das am Ausgang des Horns (703) erhaltene elektrische Feld im Wesentlichen gleichförmig ist.
  3. Strahlungselement (700, 800) nach einem der vorhergehenden Ansprüche, wobei das Aufweitungsprofil jedes Erregungsleiters (702, 712, 802) so konfiguriert ist, dass es die Ausbreitung einer fundamentalen Ausbreitungsmode (TE10) und einer höheren Ausbreitungsmode zweiter Ordnung (TE20) im Erregungsleiter (702, 712, 802) fördert.
  4. Strahlungselement (700, 800) nach einem der vorhergehenden Ansprüche, wobei das Aufweitungsprofil jedes Erregungsleiters (702, 712, 802) so konfiguriert ist, dass es die Ausbreitung, im Horn (703), mehrerer Ausbreitungsmoden ungerader Ordnung (TE10, TE30, TE50) auf der Basis der fundamentalen Ausbreitungsmode (TE10) und der höheren Ausbreitungsmode zweiter Ordnung (TE20), die in jedem Erregungsleiter (702, 712, 802) ausgebreitet werden, fördert.
  5. Strahlungselement (700, 800) nach Anspruch 3, wobei das Aufweitungsprofil jedes Erregungsleiters (702, 712, 802) zum Steuern, der Amplitude und der Phase, jeder sich im Horn (703) ausbreitenden Ausbreitungsmode (TE10, TE30, TE50) konfiguriert ist, so dass das elektrische Feld, das aus der Kombination aller sich in dem Horn ausbreitenden Ausbreitungsmoden (TE10, TE30, TE50) resultiert, am Ausgang des Horns (703) gleichförmig ist.
  6. Strahlungselement (1800, 1900, 2000) nach einem der vorhergehenden Ansprüche, das mindestens vier Versorgungsleiter umfasst, wobei das Horn (1804) vier Versorgungsleitern gemeinsam ist, wobei die vier Versorgungsleiter symmetrisch zueinander in Bezug auf zwei orthogonale Symmetrieebenen angeordnet sind.
  7. Strahlungselement (800) nach einem der vorhergehenden Ansprüche, wobei jeder Versorgungsleiter so konfiguriert ist, dass die Längsachse (806) eines Zugangsleiters (801) in Bezug auf die Mitte der Öffnung (804) des mit der Erregungsschnittstelle verbundenen Erregungsleiters (802) dezentriert ist.
  8. Strahlungselement (2100, 2200, 2300) nach einem der vorhergehenden Ansprüche, das ferner einen Leistungsverteiler (2101, 2201) zum phasengleichen Erregen der Zugangsleiter umfasst.
  9. Strahlungselement nach einem der vorhergehenden Ansprüche, wobei ein Querschnitt des Erregungsleiters quadratisch, rechteckig oder kreisförmig ist.
  10. Strahlungselement nach einem der vorhergehenden Ansprüche, wobei das Strahlungselement einen monopolaren oder bipolaren Betrieb aufweist.
  11. Strahlungselement nach einem der vorhergehenden Ansprüche, wobei jeder Erregungsleiter ein kontinuierliches oder diskontinuierliches Aufweitungsprofil aufweist.
  12. Strahlungselement nach einem der vorhergehenden Ansprüche, wobei das gemeinsame Horn axisymmetrisch ist.
  13. Strahlungselement nach einem der vorhergehenden Ansprüche, wobei jeder Erregungsleiter ein aufgeweitetes Profil in einer ersten Ebene und ein unverändertes Profil in einer zweiten Ebene orthogonal zur ersten Ebene aufweist.
  14. Strahlungsgerät (2000), das mindestens vier Strahlungselemente nach einem der vorhergehenden Ansprüche und ein sekundäres Horn (2003) umfasst, das den vier Strahlungselementen gemeinsam und über eine Eingangsschnittstelle mit den Öffnungen der jeweiligen Hörner (2001, 2002) jedes Strahlungselements verbunden ist.
  15. Antenne, die eine Vielzahl von Strahlungselementen nach einem der Ansprüche 1 bis 13 oder eine Vielzahl von Strahlungsgeräten nach Anspruch 14 umfasst.
EP19212776.9A 2018-12-03 2019-12-02 Mehrfachzugriff strahlelemente Active EP3664214B1 (de)

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FR1872213A FR3089358B1 (fr) 2018-12-03 2018-12-03 Elément rayonnant à accès multiples

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WO2020180220A1 (en) * 2019-03-04 2020-09-10 Saab Ab Dual-band multimode antenna feed
CN115411473B (zh) * 2022-08-12 2023-11-07 深圳大学 基于E面Y形分支波导的TEn0模式激励器

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FR2477785A1 (fr) * 1980-03-07 1981-09-11 Thomson Csf Source hyperfrequence multimode et antenne comportant une telle source
FR2739226A1 (fr) * 1985-01-18 1997-03-28 Thomson Csf Source hyperfrequence multimode directive et son application a une antenne radar monopulse
US6211838B1 (en) 2000-02-02 2001-04-03 Space Systems/Loral, Inc. High efficiency dual polarized horn antenna
WO2008069358A1 (en) * 2006-12-08 2008-06-12 Idoit Co., Ltd. Horn array type antenna for dual linear polarization
FR3012917B1 (fr) 2013-11-04 2018-03-02 Thales Repartiteur de puissance compact bipolarisation, reseau de plusieurs repartiteurs, element rayonnant compact et antenne plane comportant un tel repartiteur
FR3071672B1 (fr) 2017-09-28 2019-10-11 Thales Repartiteur de puissance pour antenne comportant quatre transducteurs orthomodes identiques

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EP3664214C0 (de) 2023-06-07
ES2952243T3 (es) 2023-10-30
FR3089358B1 (fr) 2022-01-21
US20200176878A1 (en) 2020-06-04
CA3063463A1 (en) 2020-06-03
US11444384B2 (en) 2022-09-13
FR3089358A1 (fr) 2020-06-05
EP3664214A1 (de) 2020-06-10

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