EP3462532A1 - 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
EP3462532A1
EP3462532A1 EP18191406.0A EP18191406A EP3462532A1 EP 3462532 A1 EP3462532 A1 EP 3462532A1 EP 18191406 A EP18191406 A EP 18191406A EP 3462532 A1 EP3462532 A1 EP 3462532A1
Authority
EP
European Patent Office
Prior art keywords
power
splitter
transducer
power distributor
junctions
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
Application number
EP18191406.0A
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English (en)
French (fr)
Other versions
EP3462532B1 (de
Inventor
Jean-Philippe Fraysse
Hervé Legay
Ségolène TUBAU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thales SA
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Publication date
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Publication of EP3462532A1 publication Critical patent/EP3462532A1/de
Application granted granted Critical
Publication of EP3462532B1 publication Critical patent/EP3462532B1/de
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Anticipated expiration legal-status Critical

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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 power splitters bipolarization.
  • This type of splitter is used to feed a network of radiating elements from a source emitting in the field of radio frequencies. It can also function 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 X-band, Ku-band and Ka-band active antennas for which notions of space and surface efficiency are essential.
  • the openings 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 high surface efficiency cornets for these applications is to be avoided given their size at these radiating aperture sizes.
  • An alternative solution is to network metallic radiating elements of smaller openings in order to benefit from their low heights and their very high surface efficiencies. To this end, it is then necessary to provide a power distributor supplying phase and with low losses access to these metal elements. This The splitter must be compact so as not to alter the gain in compactness provided by the use of reduced opening sources.
  • PCB printed Circuit Board
  • the splitter 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 having a single input .
  • the splitter comprises a coupler whose input is intended to be connected to the radiofrequency power supply and the two mutually perpendicular outputs 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 has a 180 degree angled input connected to two identical transverse branches, each branch being terminated by a 90 degree elbow connected to an output, 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 distributor comprises at least one notch filter.
  • each twist includes a chamber in the form of a quarter of a flat cylinder, a 90 degree bent inlet and a 90 degree bent outlet, the two elbows being arranged head to tail.
  • the side of the square base of each orthomode transducer is approximately 0.75 times the wavelength of use and in that the height of each orthomode transducer is approximately 0.37 times the wavelength of use.
  • the side of the square base of the splitter is about 2.24 times the wavelength of use and in that the total height of the splitter is about 0.8 times the wavelength of use.
  • the frequency associated with the use wavelength is between 1 and 40 GHz. More specifically, the frequency associated with the use wavelength 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 represents a three-dimensional exploded view of a first configuration of the splitter according to the invention.
  • This first configuration comprises a coupler of "top-wall” type. This view is oriented in a plane (x, y, z).
  • This distributor has several superimposed stages.
  • the last floor is the emission stage. It comprises four identical orthomode transducers 10 of metal and of substantially parallelepipedic shape with a square base, each transducer having a lower face 12 and an upper emitting face 11 and four lateral faces 13, the assembly defining a cavity.
  • the square base side of each orthomode transducer is about 0.75 times the wavelength of use and the height of each orthomode transducer is about 0.37 times the wavelength of use.
  • Each transducer may comprise a central cone-shaped or pyramid-shaped adapter element or cylindrical cylinders. different stacked diameters or parallelepipeds with square bases of different stacked surfaces. The function of these elements is to improve the adaptation of the transducer to a determined operating frequency band and to improve the isolation between two polarizations.
  • each transducer has on each of two adjacent lateral faces a metal waveguide connected to the underside of the transducer, the output of said waveguide being through the top of the transducer.
  • Each waveguide therefore comprises two elbows separated by a plane guide, a first elbow 16 at 90 degrees connected to the underside of the transducer, a second elbow 17 at 90 degrees located at the top of the transducer.
  • the height of a waveguide is close to that of a transducer.
  • 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 vertices 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 arranged along the y-axis in this figure. The junctions are junctions called "plane E".
  • the bases of the junctions are at the level of the bases of the orthomode transducers as we see on the figure 2 .
  • the stage disposed 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 the transmission signals into the four junctions. Indeed, as arranged in a cross, it is not convenient to inject phase emission 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 figure 4 .
  • the figure 5 represents a three-dimensional view of a twist 30 according to the invention.
  • Each twist 30 includes an enclosure 31 in the form of a quarter of a flat cylinder, an inlet 32 bent at 90 degrees and an outlet 33 bent at 90 degrees, the two elbows being arranged 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 a 180 degree angled input connected to two identical transverse branches, each branch being terminated by a 90 degree elbow connected to an output, 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 traveled by the transmission signals are perfectly identical.
  • the four orthomode transducers emit four signals in phase with the same polarization.
  • the output signals On the opposite input of the second distributor, there is the same property with the difference that the output signals have a linear polarization disposed at 90 degrees from the previous one. All these signals are also in phase.
  • the figure 6 represents in top view 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 splitter comprises a coupler 50 "top-wall" flat whose input is connected to the radio frequency power source and the two perpendicular outputs between them connected to the inputs of the two power distributors, said splitter thus constituted is suitable generating circularly polarized signals.
  • the figure 7 represents a partial exploded view of such a distributor in the reference (x, y, z). In this view, the orthomode transducers are not shown.
  • the propagation of the signal through the different components 20, 30, 41, 42 and 50 of the distributor is represented by gray chevrons.
  • the figure 9 represents a third configuration of the splitter according to the invention.
  • the power splitter according to the invention includes rejection filters 53 so that the emitted signal does not pollute the reception signal.
  • These filters are in the form of regularly spaced metal slits arranged perpendicular to the propagation of the signal.
  • the splitters according to the invention can operate in a frequency band of between 1 and 40 GHz, which corresponds to a use wavelength of between 7.5 and 300 millimeters. More precisely, the frequency may belong to the "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 a usage wavelength of between 23 and 28 millimeters.
  • the second Ka-Tx band is between 17.2 and 20.2 GHz, which corresponds to a use wavelength of between 15 and 17 millimeters.
  • This type of splitter can work with powerful power sources.
  • the power of the power source may be greater than 60 watts.
  • the geometry of the splitter ensures very low returns on the source of emission, generally lower than -20 dB and very good isolations between the inputs of the coupler "top-wall" and the accesses to the orthomode transducers. These isolations are greater than 20 dB.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
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 true EP3462532A1 (de) 2019-04-03
EP3462532B1 EP3462532B1 (de) 2020-10-07

Family

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Family Applications (1)

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

Country Status (5)

Country Link
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
EP3866256B1 (de) 2020-02-12 2023-06-21 European Space Agency Wellenleiterleistungsteiler
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582865A1 (fr) * 1985-06-04 1986-12-05 Labo Electronique Physique Modules unitaires d'antenne hyperfrequences et antenne hyperfrequences comprenant de tels modules
EP1930982A1 (de) * 2006-12-08 2008-06-11 Im, Seung joon Horngruppenantenne mit zwei linearen Polarisationen
WO2014127420A1 (en) * 2013-02-21 2014-08-28 Bae Systems Australia Ltd Wideband antenna system and method
EP2869400A1 (de) * 2013-11-04 2015-05-06 Thales Doppelpolarisierter kompakter Leistungsverteiler, Netz aus mehreren Verteilern, kompaktes Strahlungselement und Flachantenne, die einen solchen Verteiler umfasst
EP3179551A1 (de) * 2015-12-11 2017-06-14 Thales Kompakteinheit zur doppelpolarisierten ansteuerung für ein strahlungselement einer antenne, und kompaktes netz, das mindestens vier kompakte ansteuerungseinheiten umfasst

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7397323B2 (en) * 2006-07-12 2008-07-08 Wide Sky Technology, Inc. Orthomode transducer
ATE542260T1 (de) * 2009-02-02 2012-02-15 Centre Nat Etd Spatiales Orthomoduswandler für einen wellenleiter
US9287615B2 (en) * 2013-03-14 2016-03-15 Raytheon Company Multi-mode signal source
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582865A1 (fr) * 1985-06-04 1986-12-05 Labo Electronique Physique Modules unitaires d'antenne hyperfrequences et antenne hyperfrequences comprenant de tels modules
EP1930982A1 (de) * 2006-12-08 2008-06-11 Im, Seung joon Horngruppenantenne mit zwei linearen Polarisationen
WO2014127420A1 (en) * 2013-02-21 2014-08-28 Bae Systems Australia Ltd Wideband antenna system and method
EP2869400A1 (de) * 2013-11-04 2015-05-06 Thales Doppelpolarisierter kompakter Leistungsverteiler, Netz aus mehreren Verteilern, kompaktes Strahlungselement und Flachantenne, die einen solchen Verteiler umfasst
EP3179551A1 (de) * 2015-12-11 2017-06-14 Thales Kompakteinheit zur doppelpolarisierten ansteuerung für ein strahlungselement einer antenne, und kompaktes netz, das mindestens vier kompakte ansteuerungseinheiten umfasst

Also Published As

Publication number Publication date
CA3017113A1 (en) 2019-03-28
FR3071672A1 (fr) 2019-03-29
US10673118B2 (en) 2020-06-02
CN109616729A (zh) 2019-04-12
EP3462532B1 (de) 2020-10-07
US20190097296A1 (en) 2019-03-28
FR3071672B1 (fr) 2019-10-11

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