EP2092592A1 - Orthogonal-mode junction coupler with an ultrabroad operating bandwidth - Google Patents

Orthogonal-mode junction coupler with an ultrabroad operating bandwidth

Info

Publication number
EP2092592A1
EP2092592A1 EP07821498A EP07821498A EP2092592A1 EP 2092592 A1 EP2092592 A1 EP 2092592A1 EP 07821498 A EP07821498 A EP 07821498A EP 07821498 A EP07821498 A EP 07821498A EP 2092592 A1 EP2092592 A1 EP 2092592A1
Authority
EP
European Patent Office
Prior art keywords
central conductor
orthogonal
conductor
coupler according
coupling coupler
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
EP07821498A
Other languages
German (de)
French (fr)
Other versions
EP2092592B1 (en
Inventor
Lars Foged
Andrea Giacomini
Luc Duchesne
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.)
Microwave Vision SAS
Original Assignee
Societe d'Applications Technologiques de l'Imagerie Micro Onde SATIMO SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Societe d'Applications Technologiques de l'Imagerie Micro Onde SATIMO SA filed Critical Societe d'Applications Technologiques de l'Imagerie Micro Onde SATIMO SA
Publication of EP2092592A1 publication Critical patent/EP2092592A1/en
Application granted granted Critical
Publication of EP2092592B1 publication Critical patent/EP2092592B1/en
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Anticipated expiration legal-status Critical

Links

Classifications

    • 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 outer conductor 8 consists of a cylindrical tube having a coaxial cylindrical cavity 9.
  • 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.

Abstract

The present invention relates to an orthogonal-mode junction coupler with an ultrabroad bandwidth or a wavelength waveguide noteworthy in that it includes what is called an external conductor (8) comprising a cavity (9) in which a central conductor (10) extends, said central conductor being electrically isolated at radiofrequencies with the external conductor (8), said central conductor (10) being supplied by supply lines (15, 16, 17, 18) passing through the external conductor (8) and emerging in the cavity (9) of said external conductor (8).

Description

Coupleur à bande de fonctionnement ultra large de jonction à mode orthogonal Orthogonal mode super-wide junction operating band coupler
La présente invention concerne un coupleur à ultra large bande de jonction à mode orthogonal pour séparer des bandes à double polarisation se propageant par exemple dans une antenne-cornet.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.
Dans le domaine des antennes radio-fréquences, il est bien connu d'utiliser des coupleurs de jonction à mode orthogonal dits OMJ suivant l'acronyme anglo-saxon « Ortho-Mode Junctions » pour séparer des bandes à double polarisation.In the field of radio frequency antennas, it is well known to use orthogonal mode junction couplers called OMJ according to the acronym "Ortho-Mode Junctions" to separate double polarization bands.
Pour de très larges bandes de fréquences de fonctionnement, ces coupleurs de jonction à mode orthogonal sont classiquement constitués d'une section d'alimentation du guide d'onde en forme de croix comprenant deux points d'alimentation centraux, un point d'alimentation pour chaque polarisation, placés le long de l'axe du coupleur, lesdits points étant décalés le long de l'axe du coupleur et terminés par des cavités de blindage à l'arrière. Ce type de coupleurs coaxiaux présente l'inconvénient d'être encombrant et de procurer une mauvaise isolation entre les deux ports d'entrée des points d'alimentation qui sont proches les uns des autres.For very wide operating frequency 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.
De plus, ce type de coupleurs présente une asymétrie qui procure une dégradation de la pureté du réseau modal due à l'excitation de modes d'ordre supérieur.In addition, 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.
L'un des buts de l'invention est donc de remédier à tous ces inconvénients en proposant un coupleur à ultra large bande d'OMJ particulièrement compact procurant un faible couplage entre les ports d'entrée ainsi qu'un mono-mode et une excitation bi-polarisée à ultra large bande particulièrement stables. Conformément à l'invention, il est proposé un coupleur à ultra large bande de jonction à mode orthogonal d'un guide d'onde à la longueur d'onde λ remarquable en ce qu'il comprend un conducteur dit extérieur comportant une cavité dans laquelle s'étend un conducteur central isolé électriquement aux radio-fréquences avec le conducteur extérieur, ledit conducteur central étant alimenté par des lignes d'alimentation traversant le conducteur extérieur et débouchant dans la cavité du conducteur extérieur.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. According to the invention, there is provided an orthogonal mode orthogonal mode ultra-wideband coupler of a waveguide with a wavelength λ 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.
Ledit conducteur central présente une section transversale en forme de croix présentant, de préférence, deux axes de symétries orthogonaux. Par ailleurs, le coupleur de jonction à mode orthogonal suivant l'invention comprend quatre lignes d'alimentation débouchant dans la cavité du conducteur extérieur, chaque ligne d'alimentation étant connecté à une branche du conducteur central en forme de croix.Said center conductor has a cross-shaped cross section preferably having two axes of orthogonal symmetries. Furthermore, the orthogonal mode junction coupler according to the invention 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.
De préférence, chaque ligne d'alimentation est connectée à une branche du conducteur central par un contact ohmique.Preferably, each supply line is connected to a branch of the central conductor by an ohmic contact.
Deux branches opposées du conducteur central sont alimentés en signaux de radiofréquence par respectivement deux lignes d'alimentation opposées pour déclencher une polarisation déterminée.Two opposite branches of the central conductor are supplied with radiofrequency signals by respectively two opposite supply lines to trigger a determined polarization.
A cet effet, les lignes d'alimentation sont connectées à un circuit extérieur d'alimentation déterminant la distribution de phase de chaque signal transmis par les lignes d'alimentation.For this purpose, the supply lines are connected to an external supply circuit determining the phase distribution of each signal transmitted by the supply lines.
Selon une caractéristique essentielle de l'invention, les lignes d'alimentation sont connectées au conducteur central dans un même plan orthogonal à l'axe du conducteur central. D'autres avantages et caractéristiques ressortiront mieux de la description qui va suivre, d'une unique variante d'exécution donnée à titre d'exemple non limitatif, du coupleur, en particulier un coupleur coaxial, à ultra large bande de jonction à mode orthogonal conforme à l'invention, à partir des dessins annexés sur lesquels : la figure 1 est une vue en perspective du coupleur coaxial à ultra large bande d'OMJ suivant l'invention couplé à une antenne cornet, la figure 2 est une vue en coupe transversale schématique du coupleur coaxial à ultra large bande d'OMJ suivant l'invention, la figure 3 est une vue en coupe longitudinale schématique du coupleur coaxial à ultra large bande d'OMJ conforme à l'invention. On décrira ci-après un coupleur à ultra large bande d'OMJ suivant l'invention afin de séparer des bandes à doubles polarisations orthogonales d'un cornet rayonnant circulaire coaxial ou chargé d'un cône diélectrique ; Toutefois, il est bien évident que le coupleur suivant l'invention pourra être utilisé seul et/ou dans toute autre application bien connue de l'Homme de l'Art.According to an essential characteristic of the invention, the supply lines are connected to the central conductor in the same plane orthogonal to the central conductor axis. Other advantages and features will emerge more clearly from the description which follows, of a single variant of execution given by way of non-limiting example, of the coupler, in particular a coaxial coupler, with an orthogonal orthogonal super-wideband junction strip. according to the invention, from the attached drawings in which: Figure 1 is a perspective view of the coaxial coupler OMJ ultra wideband according to the invention coupled to a horn antenna, Figure 2 is a sectional view Diagrammatic cross-section of the OMJ ultra-wideband coaxial coupler according to the invention, FIG. 3 is a diagrammatic longitudinal sectional view of the OMJ ultra-wideband coaxial coupler according to the invention. An ultra-wideband OMJ coupler according to the invention will be described below in order to separate orthogonal double-polarization bands from a coaxial circular circular horn or charged with a dielectric cone; However, it is obvious that the coupler according to the invention may be used alone and / or in any other application well known to those skilled in the art.
En référence à la figure 1 , le coupleur 1 à ultra large bande d'OMJ suivant l'invention est porté par un bâti support 2 constitué de deux couronnes, une couronne inférieure 3 et une couronne supérieure 4 reliées par des entretoises 5 en forme de colonnes cylindriques, la couronne supérieure 4 portant une antenne cornet 6. Le bâti support 2 porte par ailleurs un circuit extérieur d'alimentation 7 du coupleur 1 qui sera détaillé un peu plus loin.With reference to FIG. 1, the OMJ ultra-wideband coupler 1 according to the invention 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.
Ledit coupleur 1 , en référence aux figures 2 et 3, comprend un conducteur dit extérieur 8 comportant une cavité 9 dans laquelle s'étend un conducteur central 10 isolé électriquement aux radio-fréquences avec le conducteur extérieur 8. On notera que le conducteur central n'est pas isolé électriquement au courant discontinu.Said coupler 1, with reference to FIGS. 2 and 3, comprises an outer conductor 8 comprising a cavity 9 in which extends a central conductor 10 electrically isolated from the radio frequency with the outer conductor 8. It will be noted that the central conductor is not electrically isolated from the discontinuous current.
Le conducteur extérieur 8 consiste en un tube cylindrique présentant une cavité cylindrique coaxiale 9.The outer conductor 8 consists of a cylindrical tube having a coaxial cylindrical cavity 9.
Par ailleurs, le conducteur central 10 présente une section transversale en forme de croix comportant deux axes de symétrie orthogonaux. Ainsi, le conducteur central 10 comporte quatre branches 11 , 12, 13 et 14 deux à deux opposées.Furthermore, the central conductor 10 has a cross-shaped cross section having two orthogonal axes of symmetry. Thus, the central conductor 10 has four branches 11, 12, 13 and 14 two by two opposite.
De plus, chaque branche 11 , 12, 13 et 14 dudit conducteur central 10 est alimentée par des lignes d'alimentation 15, 16, 17 et respectivement 18 traversant le conducteur extérieur 8 par des ports d'entrée 19, 20, 21 et 22 et débouchant dans la cavité 9 du conducteur extérieur 8. Chaque ligne d'alimentation 15, 16, 17 et 18 est connectée à une branche 11 ,In addition, 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 et respectivement 14 du conducteur central 10 par un contact ohmique 23. Ledit contact ohmique 23 sera obtenu par tout moyen approprié bien connu de l'Homme du Métier.12, 13 and 14 respectively of the central conductor 10 by an ohmic contact 23. Said ohmic contact 23 will be obtained by any suitable means well known to those skilled in the art.
De manière particulièrement avantageuse, les lignes d'alimentation 15, 16, 17 et 18 sont connectées à chacune des branches 11 , 12, 13 et respectivement 14 du conducteur central 10 dans un même plan orthogonal à l'axe longitudinal dudit conducteur central 10.Particularly advantageously, 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.
Par ailleurs, les lignes d'alimentation 15, 16, 17 et 18 sont connectées au circuit extérieur d'alimentation 7 déterminant la distribution de phase de chaque signal transmis par lesdites lignes d'alimentation 15, 16, 17 et 18. Ledit circuit d'alimentation 7 alimente deux branches opposées, par exemple les branches 11 et 13, du conducteur central 10 en signaux de radiofréquence par respectivement les deux lignes d'alimentation opposées 15 et respectivement 17 pour déclencher une polarisation déterminée. Par exemple, le circuit d'alimentation 7 alimente les branches 11 et 13 en signaux de radiofréquence présentant les distributions de phase (0,0°) et respectivement (0,180°) pour déclencher une polarisation des branches 11 et 13 telle que schématiquement représentée par des flèches sur la figure 3.Furthermore, 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. For example, 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 in Figure 3.
On notera que la symétrie électrique du coupleur coaxial à ultra large bande d'OMJ suivant l'invention procure un mono-mode et une excitation bi-polarisée à ultra large bande stables ainsi qu'un faible couplage entre les ports d'entrée des lignes d'alimentation. Ce faible couplage entre les ports d'entrée permet de s'exonérer d'un circuit de compensation extérieur.It should be noted that 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.
Par ailleurs, le coupleur coaxial à ultra large bande d'OMJ suivant l'invention est particulièrement compact compte tenu du fait que les lignes d'alimentation 15, 16, 17 et 18 sont connectées à chacune des branches 11 , 12, 13 et respectivement 14 du conducteur central 10 dans un même plan orthogonal à l'axe longitudinal dudit conducteur central 10Furthermore, 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
II est bien évident que le coupleur suivant l'invention pourra être obtenu suivant un procédé de fraisage de précision bien connu de l'Homme du Métier ou un procédé de fabrication d'un circuit imprimé multi-couches, ledit circuit imprimé multi-couches étant intégré à l'intérieur d'un guide d'onde, sans pour autant sortir du cadre de l'invention. On observera que, pour un coupleur obtenu suivant un procédé de fabrication de circuit imprimé, les lignes d'alimentation pourront présenter une direction opposée. Enfin, il va de soi que le coupleur coaxial à moyenne et large bande de jonction à mode orthogonal (OMJ) suivant l'invention pourra être adapté pour toute autre application bien connue de l'Homme de l'Art et que les exemples que l'on vient de donner ne sont en aucun limitatifs quant aux domaines d'application de l'invention. It is obvious that the coupler according to the invention can 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. Finally, it goes without saying that the orthogonal mode orthogonal junction coaxial coupler according to the invention can be adapted for any other application well known to those skilled in the art and that the examples which the We have just given no limitation as to the fields of application of the invention.

Claims

REVENDICATIONS
1 - Coupleur à ultra large bande de jonction à mode orthogonal d'un guide d'onde à la longueur d'onde λ caractérisé en ce qu'il comprend un conducteur dit extérieur (8) comportant une cavité (9) dans laquelle s'étend un conducteur central (10) isolé électriquement aux radio-fréquences avec le conducteur extérieur (8), ledit conducteur central (10) étant alimenté par des lignes d'alimentation (15,16,17,18) traversant le conducteur extérieur (8) et débouchant dans la cavité (9) dudit conducteur extérieur (8). 2 - Coupleur de jonction à mode orthogonal suivant la revendication 1 caractérisé en ce que le conducteur central (10) présente une section transversale en forme de croix.1 - Ultra wide orthogonal mode orthogonal junction band coupling coupler of a waveguide at the wavelength λ characterized in that it comprises a so-called outer conductor (8) comprising a cavity (9) in which s' extends a central conductor (10) electrically isolated at radio frequencies with the outer conductor (8), said central conductor (10) being supplied by supply lines (15,16,17,18) passing through the outer conductor (8). ) and opening into the cavity (9) of said outer conductor (8). 2 - orthogonal mode coupling coupler according to claim 1 characterized in that the central conductor (10) has a cross-shaped cross section.
3 - Coupleur de jonction à mode orthogonal suivant la revendication 1 caractérisé en ce que le conducteur central (10) présente deux axes de symétries orthogonaux.3 - orthogonal mode coupling coupler according to claim 1 characterized in that the central conductor (10) has two axes of orthogonal symmetries.
4 - Coupleur de jonction à mode orthogonal suivant l'une quelconque des revendications 2 ou 3 caractérisé en ce qu'il comprend quatre lignes d'alimentation (15,16,17,18) débouchant dans la cavité (9) du conducteur extérieur (8), chaque ligne d'alimentation (15,16,17,18) étant connectée à une branche (11 ,12,13,14) du conducteur central (10) en forme de croix.4 - orthogonal mode coupling coupler according to any one of claims 2 or 3 characterized in that it comprises four supply lines (15,16,17,18) opening into the cavity (9) of the outer conductor ( 8), each supply line (15, 16, 17, 18) being connected to a branch (11, 12, 13, 14) of the central conductor (10) in the shape of a cross.
5 - Coupleur de jonction à mode orthogonal suivant l'une quelconque des revendications 1 à 4 caractérisé en ce que chaque ligne d'alimentation (15,16,17,18) est connectée à une branche (11 ,12,13,14) du conducteur central (10) par un contact ohmique (23). 6 - Coupleur de jonction à mode orthogonal suivant l'une quelconque des revendications 4 ou 5 caractérisé en ce que deux branches (11 ,12,13,14) opposées du conducteur central (10) sont alimentées en signaux de radiofréquence par respectivement deux lignes d'alimentation (15,16,17,18) opposées pour déclencher une polarisation déterminée. 7 - Coupleur de jonction à mode orthogonal suivant l'une quelconque des revendications 2 à 6 caractérisé en ce que les lignes d'alimentation (15,16,17,18) sont connectées à un circuit extérieur d'alimentation (7) déterminant la distribution de phase de chaque signal transmis par les lignes d'alimentation (15,16,17,18). 8 - Coupleur de jonction à mode orthogonal suivant l'une quelconque des revendications 1 à 7 caractérisé en ce que les lignes d'alimentation (15,16,17,18) sont connectées au conducteur central (10) dans un même plan.5 - orthogonal mode coupling coupler according to any one of claims 1 to 4 characterized in that each supply line (15,16,17,18) is connected to a branch (11, 12,13,14) of the central conductor (10) by an ohmic contact (23). 6 - orthogonal mode coupling coupler according to any one of claims 4 or 5 characterized in that two opposite branches (11, 12, 13, 14) of the central conductor (10) are supplied with radiofrequency signals by two lines respectively opposite power supply (15, 16, 17, 18) to trigger a determined polarization. 7 - orthogonal mode coupling coupler according to any one of claims 2 to 6 characterized in that the supply lines (15,16,17,18) are connected to an external supply circuit (7) determining the phase distribution of each signal transmitted by the supply lines (15,16,17,18). 8 - orthogonal mode coupling coupler according to any one of claims 1 to 7 characterized in that the supply lines (15,16,17,18) are connected to the central conductor (10) in the same plane.
9 - Coupleur de jonction à mode orthogonal suivant la revendication 7 caractérisé en ce que le plan dans lequel s'étendent les connexions des lignes d'alimentation (15,16,17,18) au conducteur central (10) est orthogonal à l'axe du conducteur central (10). 9 - orthogonal mode coupling coupler according to claim 7 characterized in that the plane in which the connections of the supply lines (15,16,17,18) extend to the central conductor (10) is orthogonal to the central conductor axis (10).
EP07821498.8A 2006-10-24 2007-10-18 Orthogonal-mode junction coupler with an ultrabroad operating bandwidth Active EP2092592B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0609333A FR2907601B1 (en) 2006-10-24 2006-10-24 ULTRA-WIDE ORTHOGONAL JUNCTION OPERATING STRAP COUPLER
PCT/EP2007/061133 WO2008049776A1 (en) 2006-10-24 2007-10-18 Orthogonal-mode junction coupler with an ultrabroad operating bandwidth

Publications (2)

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

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EP07821498.8A Active EP2092592B1 (en) 2006-10-24 2007-10-18 Orthogonal-mode junction coupler with an ultrabroad operating bandwidth

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

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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

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JPH11168308A (en) * 1997-12-04 1999-06-22 Nec Corp Coaxial power combiner
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EP0285879B1 (en) * 1987-03-24 1993-06-16 Siemens Aktiengesellschaft Broad-band polarizing junction
JP3489854B2 (en) 1993-06-30 2004-01-26 蛇の目ミシン工業株式会社 Hex Socket Set Screw Automatic Feeder
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AUPR469301A0 (en) * 2001-05-01 2001-05-24 Commonwealth Scientific And Industrial Research Organisation A wideband coaxial orthogonal-mode junction coupler
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JPH11168308A (en) * 1997-12-04 1999-06-22 Nec Corp Coaxial power combiner
US6211750B1 (en) * 1999-01-21 2001-04-03 Harry J. Gould Coaxial waveguide feed with reduced outer diameter

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Title
See also references of WO2008049776A1 *

Also Published As

Publication number Publication date
ES2711898T3 (en) 2019-05-08
FR2907601B1 (en) 2009-11-20
EP2092592B1 (en) 2018-11-21
US8125295B2 (en) 2012-02-28
US20100033264A1 (en) 2010-02-11
WO2008049776A1 (en) 2008-05-02
FR2907601A1 (en) 2008-04-25

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