EP2092592B1 - Orthogonalmodus-verbindungskoppler mit ultrabreiter betriebsbandbreite - Google Patents

Orthogonalmodus-verbindungskoppler mit ultrabreiter betriebsbandbreite Download PDF

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Publication number
EP2092592B1
EP2092592B1 EP07821498.8A EP07821498A EP2092592B1 EP 2092592 B1 EP2092592 B1 EP 2092592B1 EP 07821498 A EP07821498 A EP 07821498A EP 2092592 B1 EP2092592 B1 EP 2092592B1
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EP
European Patent Office
Prior art keywords
conductor
orthogonal
supply lines
coupler
centre conductor
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Application number
EP07821498.8A
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English (en)
French (fr)
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EP2092592A1 (de
Inventor
Lars Foged
Andrea Giacomini
Luc Duchesne
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Microwave Vision SAS
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Microwave Vision SAS
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    • 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
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators

Definitions

  • the present invention relates to an orthogonal-mode orthogonal-mode super-wideband coupler for separating dual polarization bands propagating for example in a horn antenna.
  • EP 0222086 a polarization transducer for microwave, based on the use of at least three diodes with variable capacity. By controlling the voltage of a selected set of these diodes, the rotation of the electric wave can be controlled at a selected angle.
  • the document EP 0285879 discloses a broadband junction device for separating orthogonally and linearly polarized electromagnetic microwaves. This device comprises a branching device which subdivides a waveguide conveying the two orthogonal polarizations into two rectangular waveguide arms of the same impedance and each of which conveys more than one of these polarizations. Impedance matching is achieved by varying the size of the waveguide. It consists of an outer conductor having a cavity in which extends a central conductor.
  • JP 0725480 a coaxial converter which receives orthogonal polarizations of an incident wave, and probes by which these polarizations exit outside the coaxial converter.
  • the document US 6,211,750 discloses a signal receiving and transmitting device comprising an outer waveguide, a central waveguide, and probes for exciting electromagnetic modes in the cavity between the outer waveguide and the waveguide. central wave.
  • the document US2002 / 0163401 discloses an orthogonal orthogonal junction mode ultra-wideband coupler of a waveguide with a circular central conductor and ridges for forming a cross-shaped conductor, with probes in which the different polarizations of the incident waves leave the coupler.
  • orthogonal mode junction couplers called OMJ according to the acronym "Ortho-Mode Junctions" to separate double polarization bands.
  • these orthogonal mode junction couplers typically consist of a cross-shaped waveguide feed section comprising two central feed points, a feed point for each polarization, placed along the axis of the coupler, said points being offset along the axis of the coupler and terminated by shielding cavities at the rear.
  • This type of coaxial couplers has the disadvantage of being bulky and to provide poor insulation between the two input ports of the power points that are close to each other.
  • this type of coupler has an asymmetry that provides a degradation of the purity of the modal network due to the excitation of higher order modes.
  • One of the aims of the invention is therefore to remedy all these drawbacks by proposing a particularly compact OMJ ultra wideband coupler providing a weak coupling between the input ports as well as a single mode and an excitation. bi-polarized ultra-wide band especially stable.
  • an orthogonal mode orthogonal mode ultra-wideband coupler of a waveguide with a wavelength ⁇ which is remarkable in that it comprises an external conductor comprising a cavity in which extends a central conductor electrically isolated at radio frequency with the outer conductor, said central conductor being fed by lines feed through the outer conductor and opening into the cavity of the outer conductor.
  • Said center conductor has a cross-shaped cross section preferably having two axes of orthogonal symmetries.
  • the orthogonal mode junction coupler comprises four feed lines opening into the cavity of the outer conductor, each feed line being connected to a branch of the central conductor in the form of a cross.
  • each supply line is connected to a branch of the central conductor by an ohmic contact.
  • Two opposite branches of the central conductor are supplied with radiofrequency signals by respectively two opposite supply lines to trigger a determined polarization.
  • the supply lines are connected to an external supply circuit determining the phase distribution of each signal transmitted by the supply lines.
  • the supply lines are connected to the central conductor in the same plane orthogonal to the central conductor axis.
  • the OMJ ultra wideband coupler 1 is carried by a support frame 2 consisting of two rings, a lower ring 3 and an upper ring 4 connected by spacers 5 in the form of cylindrical columns, the upper ring 4 carrying a horn antenna 6.
  • the support frame 2 also carries an external supply circuit 7 of the coupler 1 which will be detailed a little further.
  • Said coupler 1 with reference to Figures 2 and 3 , comprises an outer conductor 8 having a cavity 9 in which extends a central conductor 10 electrically isolated at radio frequencies with the outer conductor 8. Note that the central conductor is not electrically insulated discontinuous current.
  • the outer conductor 8 consists of a cylindrical tube having a coaxial cylindrical cavity 9.
  • the central conductor 10 has a cross-shaped cross section having two orthogonal axes of symmetry.
  • the central conductor 10 has four branches 11, 12, 13 and 14 two by two opposite.
  • each branch 11, 12, 13 and 14 of said central conductor 10 is fed by supply lines 15, 16, 17 and 18 respectively passing through the outer conductor 8 through input ports 19, 20, 21 and 22. and opening into the cavity 9 of the outer conductor 8.
  • Each supply line 15, 16, 17 and 18 is connected to a branch 11, 12, 13 and 14 respectively of the central conductor 10 by an ohmic contact 23.
  • Said ohmic contact 23 will be obtained by any appropriate means well known to the Man of the Occupation.
  • the supply lines 15, 16, 17 and 18 are connected to each of the branches 11, 12, 13 and 14 respectively of the central conductor 10 in the same plane orthogonal to the longitudinal axis of said central conductor 10.
  • the supply lines 15, 16, 17 and 18 are connected to the external supply circuit 7 determining the phase distribution of each signal transmitted by said supply lines 15, 16, 17 and 18.
  • the power supply 7 feeds two opposite branches, for example the branches 11 and 13, of the central conductor 10 into radiofrequency signals by respectively the two opposite supply lines 15 and 17 respectively to trigger a determined polarization.
  • the power supply circuit 7 supplies the branches 11 and 13 with radiofrequency signals having the phase distributions (0.0 °) and respectively (0.180 °) to trigger a polarization of the branches 11 and 13 as schematically represented by arrows on the figure 3 .
  • the electrical symmetry of the OMJ ultra-wideband coaxial coupler according to the invention provides a stable ultra-wide band bi-polarized single-mode and excitation as well as a weak coupling between the input ports of the lines. power. This weak coupling between the input ports makes it possible to escape from an external compensation circuit.
  • the OMJ ultra-wideband coaxial coupler according to the invention is particularly compact in view of the fact that the supply lines 15, 16, 17 and 18 are connected to each of the branches 11, 12, 13 and respectively 14 of the central conductor 10 in the same plane orthogonal to the longitudinal axis of said central conductor 10
  • the coupler according to the invention may be obtained according to a precision milling method well known to those skilled in the art or a method of manufacturing a multi-layer printed circuit, said multi-layer printed circuit being integrated within a waveguide, without departing from the scope of the invention. It will be observed that, for a coupler obtained by a printed circuit manufacturing method, the supply lines may have an opposite direction.

Landscapes

  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguides (AREA)

Claims (7)

  1. Orthogonalmodus-Verbindungskoppler mit ultrabreiter Bandbreite eines Wellenleiters mit der Wellenlänge λ, dadurch gekennzeichnet, dass er umfasst:
    - einen sogenannten äußeren Leiter (8), aufweisend einen Hohlraum (9), in welchen sich ein gegenüber Funkfrequenzen elektrisch isolierter zentraler Leiter (10) mit dem äußeren Leiter (8) erstreckt, wobei der zentrale Leiter (10) durch Versorgungslinien (15, 16, 17, 18) versorgt wird, die den äußeren Leiter (8) durchqueren und in den Hohlraum (9) des äußeren Leiters (8) ausmünden, wobei der zentrale Leiter (10) einen kreuzförmigen Querschnitt aufweist, und
    - vier Versorgungslinien (15, 16, 17, 18), die in den Hohlraum (9) des äußeren Leiters (8) ausmünden, wobei jede Versorgungslinie (15, 16, 17, 18) an eine Abzweigung (11, 12, 13, 14) des zentralen Leiters (10) in Kreuzform angeschlossen ist.
  2. Orthogonalmodus-Verbindungskoppler nach Anspruch 1, dadurch gekennzeichnet, dass der zentrale Leiter (10) zwei orthogonale Symmetrieachsen aufweist.
  3. Orthogonalmodus-Verbindungskoppler nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass jede Versorgungslinie (15, 16, 17, 18) an eine Abzweigung (11, 12, 13, 14) des zentralen Leiters (10) mittels eines ohmschen Kontakts (23) angeschlossen ist.
  4. Orthogonalmodus-Verbindungskoppler nach einem der Ansprüche 1 oder 3, dadurch gekennzeichnet, dass gegenüberliegende Abzweigungen (11, 12, 13, 14) des zentralen Leiters (10) mit Funkfrequenzsignalen von jeweils zwei gegenüberliegenden Versorgungslinien (15, 16, 17, 18) versorgt werden, um eine bestimmte Polarisierung auszulösen.
  5. Orthogonalmodus-Verbindungskoppler nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Versorgungslinien (15, 16, 17, 18) in einer selben Ebene an den zentralen Leiter (10) angeschlossen sind.
  6. Orthogonalmodus-Verbindungskoppler nach Anspruch 5, dadurch gekennzeichnet, dass die Ebene, in welcher sich die Anschlüsse der Versorgungslinien (15, 16, 17, 18) an den zentralen Leiter (10) erstrecken, orthogonal zur Achse des zentralen Leiters (10) ist.
  7. Einheit, umfassend
    einen Orthogonalmodus-Verbindungskoppler nach einem der Ansprüche 1 bis 4, und
    einen äußeren Versorgungskreis,
    wobei die Versorgungslinien (15, 16, 17, 18) mit dem äußeren Versorgungskreis verbunden sind, welcher die Phasenverteilung jedes von den Versorgungslinien (15, 16, 17, 18) übertragenen Signals bestimmt.
EP07821498.8A 2006-10-24 2007-10-18 Orthogonalmodus-verbindungskoppler mit ultrabreiter betriebsbandbreite Active EP2092592B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0609333A FR2907601B1 (fr) 2006-10-24 2006-10-24 Coupleur a bande de fonctionnement ultra large de jonction a mode orthogonal
PCT/EP2007/061133 WO2008049776A1 (fr) 2006-10-24 2007-10-18 Coupleur à bande de fonctionnement ultra large de jonction à mode orthogonal

Publications (2)

Publication Number Publication Date
EP2092592A1 EP2092592A1 (de) 2009-08-26
EP2092592B1 true EP2092592B1 (de) 2018-11-21

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Application Number Title Priority Date Filing Date
EP07821498.8A Active EP2092592B1 (de) 2006-10-24 2007-10-18 Orthogonalmodus-verbindungskoppler mit ultrabreiter betriebsbandbreite

Country Status (5)

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US (1) US8125295B2 (de)
EP (1) EP2092592B1 (de)
ES (1) ES2711898T3 (de)
FR (1) FR2907601B1 (de)
WO (1) WO2008049776A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8431197B2 (en) * 2008-10-23 2013-04-30 Lawrence Livermore National Security, Llc Layered reactive particles with controlled geometries, energies, and reactivities, and methods for making the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11168308A (ja) * 1997-12-04 1999-06-22 Nec Corp 同軸型電力合成器
US6211750B1 (en) * 1999-01-21 2001-04-03 Harry J. Gould Coaxial waveguide feed with reduced outer diameter
US20020163401A1 (en) * 2001-05-01 2002-11-07 Zhang Henry Z. Wideband coaxial orthogonal-mode junction coupler

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0222086B1 (de) * 1982-10-16 1990-09-26 ANT Nachrichtentechnik GmbH Polarisationswandler
DE3881741D1 (de) * 1987-03-24 1993-07-22 Siemens Ag Breitband-polarisationsweiche.
JP3489854B2 (ja) 1993-06-30 2004-01-26 蛇の目ミシン工業株式会社 六角穴付き止螺子自動供給装置
JPH07254803A (ja) * 1994-03-15 1995-10-03 Toshiba Corp 導波管同軸変換器
JPH11112202A (ja) * 1997-09-30 1999-04-23 Fujitsu General Ltd 直線偏波受信装置
WO2007087821A1 (en) * 2006-01-31 2007-08-09 Newtec Cy Multi-band transducer for multi-band feed horn

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11168308A (ja) * 1997-12-04 1999-06-22 Nec Corp 同軸型電力合成器
US6211750B1 (en) * 1999-01-21 2001-04-03 Harry J. Gould Coaxial waveguide feed with reduced outer diameter
US20020163401A1 (en) * 2001-05-01 2002-11-07 Zhang Henry Z. Wideband coaxial orthogonal-mode junction coupler

Also Published As

Publication number Publication date
EP2092592A1 (de) 2009-08-26
FR2907601B1 (fr) 2009-11-20
FR2907601A1 (fr) 2008-04-25
ES2711898T3 (es) 2019-05-08
US20100033264A1 (en) 2010-02-11
US8125295B2 (en) 2012-02-28
WO2008049776A1 (fr) 2008-05-02

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