EP3462532B1 - Leistungsverteiler für antenne, der vier identische orthomode transducer umfasst - Google Patents

Leistungsverteiler für antenne, der vier identische orthomode transducer umfasst Download PDF

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Publication number
EP3462532B1
EP3462532B1 EP18191406.0A EP18191406A EP3462532B1 EP 3462532 B1 EP3462532 B1 EP 3462532B1 EP 18191406 A EP18191406 A EP 18191406A EP 3462532 B1 EP3462532 B1 EP 3462532B1
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EP
European Patent Office
Prior art keywords
power
transducer
power divider
wavelength
junctions
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Application number
EP18191406.0A
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English (en)
French (fr)
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EP3462532A1 (de
Inventor
Jean-Philippe Fraysse
Hervé Legay
Ségolène TUBAU
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Thales SA
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Thales SA
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • 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
    • H01P1/161—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/08—Microstrips; Strip lines
    • H01P3/081—Microstriplines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
    • 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
    • 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
    • H01Q21/245—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction provided with means for varying the polarisation 

Definitions

  • the field of the invention is that of compact bipolarization power distributors.
  • This type of distributor is used to supply a network of radiating elements from a source emitting in the radio frequency range. It can also operate as a receiver in the same frequency domain. In this case, the splitter combines several signals received by the network into a single signal.
  • the main missions targeted are the active antennas in X-band, in Ku-band and in Ka-band for which the notions of size and surface efficiency are essential.
  • the apertures of the radiating elements for these missions are of the order of 2.5 to 3.5 times the emission wavelength. It follows that the use of cones with high surface efficiency for these applications is to be avoided given their bulk at these radiating aperture sizes.
  • PCB printed Circuit Board
  • the distributor comprises four identical "twists" and two power distributors, each pair of junctions located in the same plane being connected by the base of said junctions by means of two twists to the two outputs of a power distributor comprising a single entry.
  • the distributor comprises a coupler whose input is intended to be connected to the radiofrequency power supply source and the two outputs, perpendicular to each other, being connected to the inputs of the two power distributors, said distributor thus formed being able to generate circularly polarized signals.
  • the coupler is a “top-wall” coupler or a Riblet coupler.
  • each power distributor comprises an input angled at 180 degrees connected to two identical transverse branches, each branch being terminated by a bend at 90 degrees connected to an output, so that an input signal propagates in a given direction or separated into two identical output signals propagating in two directions parallel to each other and perpendicular to the given direction.
  • the distributor comprises at least one rejector filter.
  • each twist comprises an enclosure in the form of a flat quarter cylinder, an inlet angled at 90 degrees and an outlet angled at 90 degrees, the two elbows being arranged head-to-tail.
  • the side of the square base of each orthomode transducer is approximately 0.75 times the operating wavelength and in that the height of each orthomode transducer is approximately 0.37 times the operating wavelength.
  • the side of the square base of the distributor is equal to approximately 2.24 times the operating wavelength and in that the total height of the distributor is approximately 0.8 times the operating wavelength.
  • the frequency associated with the wavelength of use is between 1 and 40 GHz. More precisely, the frequency associated with the wavelength of use is between 10.7 and 12.75 GHz or between 17.2 and 20.2 GHz.
  • the transducer operates in transmission.
  • the same transducer can operate in reception.
  • the figure 1 shows a three-dimensional exploded view of a first configuration of the distributor according to the invention.
  • This first configuration includes a “top-wall” type coupler. This view is oriented in a plane (x, y, z).
  • This distributor has several superimposed stages.
  • the top floor is the emission floor. It comprises four identical orthomode transducers 10 metallic and of substantially parallelepipedal shape with a square base, each transducer comprising a lower face 12 and an upper face 11 of emission and four lateral faces 13, the assembly defining a cavity.
  • the side of the square base of each orthomode transducer is approximately 0.75 times the operating wavelength and the height of each orthomode transducer is approximately 0.37 times the operating wavelength.
  • Each transducer may include a central adaptation element in the form of a cone or pyramid or in the form of cylinders of different diameters stacked or parallelepipeds with square bases of different surfaces stacked. The function of these elements is to improve the adaptation of the transducer over a determined operating frequency band and to improve the isolation between two polarizations.
  • each transducer comprises on each of two adjacent lateral faces a metallic waveguide connected to the underside of the transducer, the output of said waveguide being made through the top of the transducer.
  • Each waveguide therefore comprises two bends separated by a plane guide, a first 16 at 90 degree bend connected to the underside of the transducer, a second 17 at 90 degree bend located at the top of the transducer.
  • the height of a waveguide is close to that of a transducer.
  • the four transducers are arranged to form a square.
  • Each transducer is connected to its two neighbors by two T-shaped junctions 20 perpendicular to each other, each junction being connected by the two branches of the T to the tops of two waveguides, the set of four junctions forming a Greek cross centered on the square of the transducers as seen on the figure 3 .
  • Two junctions are arranged along the x axis and two junctions are arranged along the y axis in this figure. The junctions are called “plane E” junctions.
  • the bases of the junctions are at the level of the bases of the orthomode transducers as seen on the figure 2 .
  • the stage located under the upper stage of the distributor is shown in the sectional view of the figure 4 . Its function is to facilitate the injection of transmission signals into the four junctions. In fact, as arranged in a cross, it is not convenient to inject phase transmission signals inside the junctions.
  • This stage comprises four identical twists 30, two power distributors 41 and 42 and the coupler 50. These different elements are represented by different hatching on the diagram. figure 4 .
  • the figure 5 represents a three-dimensional view of a twist 30 according to the invention.
  • Each twist 30 has an enclosure 31 in the form of a flat quarter cylinder, an inlet 32 angled at 90 degrees and an outlet 33 bent at 90 degrees, with both elbows placed head to tail.
  • the four inputs of the emission signals at the input of the twists are arranged on the sides of the large square formed by the four orthomode transducers so as to form two pairs of two orthogonal inputs between them.
  • Each power distributor has an inlet angled at 180 degrees connected to two identical transverse branches, each branch being terminated by a bend at 90 degrees connected to an outlet, so that an input signal propagating in a given direction is separated into two identical output signals propagating in two directions parallel to each other and perpendicular to the given direction.
  • the paths followed by the emission signals are perfectly identical.
  • the four orthomode transducers emit four signals in phase with the same polarization.
  • the output signals have a linear polarization arranged at 90 degrees from the previous one. All of these signals are also in phase.
  • the figure 6 shows a top view of the propagation of the linear polarization of the signals in the four transducers 10.
  • the signals from the first distributor are represented by white arrows and the signals from the second distributor by black arrows.
  • the distributor comprises a flat top-wall coupler 50, the input of which is connected to the radiofrequency power supply source and the two outputs perpendicular to each other connected to the inputs of the two power distributors, said distributor thus formed is suitable. generating circularly polarized signals.
  • the figure 7 represents a partial exploded view of such a distributor in the coordinate system (x, y, z). In this view, the orthomode transducers are not shown.
  • the propagation of the signal through the various components 20, 30, 41, 42 and 50 of the distributor is represented by gray chevrons.
  • the figure 8 shows a second configuration of the distributor according to the invention.
  • the top-wall coupler is replaced by a Riblet 51 coupler.
  • this coupler has two inputs and two outputs. A signal injected into one of the two inputs is distributed over the two outputs into two components of the same level but out of phase by 90 °.
  • the figure 9 shows a third configuration of the distributor according to the invention.
  • the power distributor according to the invention includes rejection filters 53 so that the transmitted signal does not pollute the reception signal.
  • These filters have the form of regularly spaced metal slots and arranged perpendicular to the propagation of the signal.
  • the distributors according to the invention can operate in a frequency band of between 1 and 40 GHz, which corresponds to an operating wavelength of between 7.5 and 300 millimeters. More precisely, the frequency can belong to the so-called “Ku-Tx” or “Ka-Tx” transmission bands intended for satellite transmissions.
  • the Ku-Tx band is between 10.7 and 12.75 GHz, which corresponds to an operating wavelength between 23 and 28 millimeters.
  • the second Ka-Tx band is between 17.2 and 20.2 GHz, which corresponds to a wavelength of use between 15 and 17 millimeters.
  • the power of the power source may be greater than 60 watts.
  • the geometry of the splitter ensures very low returns to the emission source, generally less than -20 dB and very good insulation between the inputs of the “top-wall” coupler and the accesses to the orthomode transducers. These isolations are greater than 20 dB.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Claims (9)

  1. Kompakter Bipolarisations-Leistungsverteiler für eine Funkfrequenz-Speisungsquelle mit doppelter orthogonaler Polarisation, welche bei einer Betriebswellenlänge sendet, wobei der Verteiler vier Orthomode-Wandler (10) umfasst, wobei der Verteiler Folgendes umfasst:
    - acht identische Wellenleiter (15), wobei jeder Wellenleiter zwei Krümmungen (16, 17), vier identische T-förmige Verbindungen (20) umfasst, wobei alle vier Orthomode-Wandler identisch sind und im Wesentlichen eine Quaderform mit quadratischer Basis aufweisen, wobei jeder Wandler eine untere Seite (12) und eine obere Sendeseite (11) und vier Seitenflächen (13) umfasst, wobei jeder Wandler auf jeder von zwei benachbarten Seitenflächen einen Wellenleiter (15) umfasst, welcher mit der unteren Seite (12) des Wandlers verbunden ist;
    - wobei die vier Wandler zum Bilden eines Quadrates angeordnet sind, wobei jeder Wandler mit zwei zueinander rechtwinkligen Verbindungen (20) verbunden ist, wobei jede Verbindung mit ihren beiden T-Schenkeln an die Spitzen der beiden Wellenleiter angeschlossen ist, wobei alle vier Verbindungen ein griechisches Kreuz bilden, welches auf das Wandlerquadrat zentriert ist; dadurch gekennzeichnet, dass der Leistungsverteiler Folgendes umfasst:
    - vier identische "Twists" (30) und zwei Leistungsverteiler (41, 42), wobei jedes Paar von Verbindungen, welche in einer gleichen Ebene angeordnet sind, über die Basis der Verbindungen mithilfe zweier Twists an die beiden Ausgänge eines Leistungsverteilers angeschlossen sind, welcher einen einzigen Eingang umfasst;
    - einen Koppler (50), dessen Eingang dazu bestimmt ist, mit der Funkfrequenz-Speisungsquelle verbunden zu werden, und wobei die beiden zueinander rechtwinkligen Ausgänge mit den Eingängen der beiden Leistungsverteiler verbunden sind, wobei der so gebildete Verteiler in der Lage ist, kreisförmig polarisierte Signale zu erzeugen.
  2. Leistungsverteiler nach Anspruch 1, dadurch gekennzeichnet, dass der Koppler ein "Top-wall"-Koppler oder ein Riblet-Koppler (51) ist.
  3. Leistungsverteiler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jeder Leistungsverteiler einen um 180 Grad gekrümmten Eingang umfasst, der mit zwei identischen Querschenkeln verbunden ist, wobei jeder Schenkel in einer Krümmung mit 90° endet, welche mit einem Ausgang verbunden ist, sodass ein Eingangssignal, welches sich in eine gegebene Richtung fortpflanzt, in zwei identische Ausgangssignale getrennt wird, welche sich in die beiden zueinander parallelen und zu der gegebenen Richtung rechtwinkligen Richtungen fortpflanzen.
  4. Leistungsverteiler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Verteiler mindestens einen Unterdrückungsfilter (53) umfasst.
  5. Leistungsverteiler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jeder Twist (30) eine Einhausung (31) in Form eines flachen Viertelzylinders, einen um 90 Grad gekrümmten Eingang (32) und einen um 90 Grad gekrümmten Ausgang (33) umfasst, wobei die beiden Krümmungen seitenverkehrt zueinander angeordnet sind.
  6. Leistungsverteiler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Seite der quadratischen Basis eines jeden Orthomode-Wandlers ungefähr das 0,75-Fache der Betriebswellenlänge beträgt und dass die Höhe eines jeden Orthomode-Wandlers ungefähr das 0,37-Fache der Betriebswellenlänge beträgt.
  7. Leistungsverteiler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Seite der quadratischen Basis des Verteilers ungefähr das 2,24-Fache der Betriebswellenlänge beträgt und dass die gesamte Höhe des Verteilers ungefähr das 0,8-Fache der Betriebswellenlänge beträgt.
  8. Leistungsverteiler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die der Betriebswellenlänge zugeordnete Frequenz zwischen 1 und 40 GHz beträgt.
  9. Leistungsverteiler nach Anspruch 8, dadurch gekennzeichnet, dass die der Betriebswellenlänge zugeordnete Frequenz zwischen 10,7 und 12,75 GHz oder zwischen 17,2 und 20,2 GHz beträgt.
EP18191406.0A 2017-09-28 2018-08-29 Leistungsverteiler für antenne, der vier identische orthomode transducer umfasst Active EP3462532B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1700993A FR3071672B1 (fr) 2017-09-28 2017-09-28 Repartiteur de puissance pour antenne comportant quatre transducteurs orthomodes identiques

Publications (2)

Publication Number Publication Date
EP3462532A1 EP3462532A1 (de) 2019-04-03
EP3462532B1 true EP3462532B1 (de) 2020-10-07

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EP18191406.0A Active EP3462532B1 (de) 2017-09-28 2018-08-29 Leistungsverteiler für antenne, der vier identische orthomode transducer umfasst

Country Status (5)

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US (1) US10673118B2 (de)
EP (1) EP3462532B1 (de)
CN (1) CN109616729A (de)
CA (1) CA3017113A1 (de)
FR (1) FR3071672B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3089358B1 (fr) 2018-12-03 2022-01-21 Thales Sa Elément rayonnant à accès multiples
ES2950146T3 (es) * 2020-02-12 2023-10-05 Esa Divisor de potencia de guía de ondas
CN112688068B (zh) * 2020-12-21 2021-11-23 西安电子科技大学 一种小型化的宽带三极化天线
CN113078450B (zh) * 2021-03-22 2022-02-01 北京交通大学 双极化空气波导阵列天线

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Publication number Priority date Publication date Assignee Title
FR2582865B1 (fr) * 1985-06-04 1987-07-31 Labo Electronique Physique Modules unitaires d'antenne hyperfrequences et antenne hyperfrequences comprenant de tels modules
US7397323B2 (en) * 2006-07-12 2008-07-08 Wide Sky Technology, Inc. Orthomode transducer
WO2008069358A1 (en) * 2006-12-08 2008-06-12 Idoit Co., Ltd. Horn array type antenna for dual linear polarization
ES2379756T3 (es) * 2009-02-02 2012-05-03 Centre National D'etudes Spatiales Transductor ortomodo de guía de ondas
WO2014127420A1 (en) * 2013-02-21 2014-08-28 Bae Systems Australia Ltd Wideband antenna system and method
US9287615B2 (en) * 2013-03-14 2016-03-15 Raytheon Company Multi-mode signal source
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
FR3045220B1 (fr) * 2015-12-11 2018-09-07 Thales Ensemble d'excitation compact bipolarisation pour un element rayonnant d'antenne et reseau compact comportant au moins quatre ensembles d'excitation compacts
CN205609721U (zh) * 2016-05-11 2016-09-28 江苏尚瑞通信科技有限公司 一种低损耗的“n”形腔体功分器

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Also Published As

Publication number Publication date
US10673118B2 (en) 2020-06-02
US20190097296A1 (en) 2019-03-28
FR3071672B1 (fr) 2019-10-11
FR3071672A1 (fr) 2019-03-29
CA3017113A1 (en) 2019-03-28
EP3462532A1 (de) 2019-04-03
CN109616729A (zh) 2019-04-12

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