EP4169118A1 - Flexible waveguide device and method for manufacturing such a device - Google Patents

Flexible waveguide device and method for manufacturing such a device

Info

Publication number
EP4169118A1
EP4169118A1 EP21732582.8A EP21732582A EP4169118A1 EP 4169118 A1 EP4169118 A1 EP 4169118A1 EP 21732582 A EP21732582 A EP 21732582A EP 4169118 A1 EP4169118 A1 EP 4169118A1
Authority
EP
European Patent Office
Prior art keywords
core
mandrel
manufacturing
flexible
fixing flanges
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.)
Pending
Application number
EP21732582.8A
Other languages
German (de)
French (fr)
Inventor
Mathieu BILLOD
Alexandre DIMITRIADES
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.)
Swissto12 SA
Original Assignee
Swissto12 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 Swissto12 SA filed Critical Swissto12 SA
Publication of EP4169118A1 publication Critical patent/EP4169118A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01P3/12—Hollow waveguides
    • H01P3/14—Hollow waveguides flexible
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/001—Manufacturing waveguides or transmission lines of the waveguide type
    • H01P11/002—Manufacturing hollow waveguides

Definitions

  • the present invention relates to a waveguide device and more particularly a flexible waveguide device capable of adapting its length and the orientation of its ends depending on the circumstances in order to facilitate its assembly.
  • the flexible waveguide device according to the invention also has the advantage of absorbing vibrations or shocks.
  • the invention also relates to a method of manufacturing such a device.
  • the radiofrequency (RF) signals can propagate either in free space or in waveguide devices. These waveguide devices are used to channel RF signals or to manipulate them in the spatial or frequency domain.
  • the present invention relates in particular to passive RF devices which make it possible to propagate and manipulate radio frequency signals without using active electronic components.
  • Passive waveguides can be divided into three distinct categories:
  • the present invention relates in particular to the first category above, collectively hereinafter referred to as waveguides.
  • waveguides include waveguides as such, filters, antennas, mode converters, etc. They can be used for signal routing, frequency filtering, signal separation or recombination, transmission or reception of signals in or from free space, etc.
  • the waveguides are generally made from a conductive material, for example metal, by extrusion or bending.
  • a conductive material for example metal
  • the production of waveguides with complex sections by conventional manufacturing methods is difficult and expensive.
  • recent work has demonstrated the possibility of producing waveguide components using additive manufacturing methods, for example by 3D printing.
  • the additive manufacturing of waveguides formed from conductive materials is known.
  • WO18029455 discloses a waveguide assembly for a radio frequency, RF signal network comprising a plurality of waveguides, wherein at least two of the plurality of waveguides are formed integrally with each other. At least one of the plurality of waveguides can be flexible, which can improve interface loads and allow adjustment of interface planes for ease of mounting.
  • GB1078575 discloses a conventional method of manufacturing flexible waveguides of the "bellows" type. A mandrel having the same shape as the interior of a flexible waveguide is made. A layer of copper or copper alloy is then applied by electroforming on the mandrel so as to obtain the necessary thickness on the surface of the mandrel.
  • WO2019 / 243766 discloses an elongated flexible waveguide section for radio frequency signals.
  • the waveguide section is corrugated in the longitudinal direction, and the waveguide section is at least partially corrugated in a circumferential direction perpendicular to the longitudinal direction. The manufacture of such a waveform is relatively difficult to implement.
  • An object of the present invention is to provide a method of manufacturing a flexible waveguide device free from the limitations of the prior art.
  • an object of the present invention is to provide a flexible waveguide device easy to design by an improved manufacturing process.
  • Another object of the present invention is to provide a flexible waveguide device at reduced costs. According to the invention, these objects are achieved in particular by means of a method of manufacturing a flexible waveguide device, of the bellows type, comprising a core traversed right through by a channel for guiding a radiofrequency signal at a determined frequency.
  • the manufacturing process includes the following steps:
  • the electroformed metal layer has a homogeneous thickness lying between 0.05 and 5 mm and preferably between 0.1 and 0.5 mm.
  • the mandrel is manufactured so as to obtain a mandrel of recessed shape.
  • the mandrel is removed by dissolution using a dissolving solution.
  • the mandrel and the metal layer formed on the outer casing of the mandrel are immersed in a solvent bath.
  • two fixing flanges are fixed to the respective ends of the core, preferably by brazing.
  • two fixing flanges are integrated into the geometry of the mandrel so that the fixing flanges are integral with the respective ends of the core.
  • inserts or other fixing elements are assembled on the mandrel, then encapsulate in the metal layer when the latter is electroformed on the outer casing of the mandrel to form the core of the device.
  • Another aspect of the invention relates to a flexible waveguide device, of the bellows type, for guiding a radiofrequency signal at a determined frequency range.
  • the device includes:
  • a core comprising outer and inner side walls, the inner walls delimiting a waveguide channel
  • the flexible corrugated portion is formed on a part of the outer side walls of the core and comprises a plurality of circumferential ribs around the core and which are adjacent to each other.
  • Each rib lies in a plane orthogonal to the axis of the channel when the flexible waveguide device is in an unfolded configuration.
  • Each rib is devoid of ripple along its circumference.
  • the flexible corrugated portion is or is not centered relative to the two fixing flanges.
  • the distance between each adjacent rib can vary between 0.1 and 5.0mm and preferably between 0.5 and 2.0mm when the device changes from a compressed configuration to a deployed configuration.
  • several distinct flexible corrugated portions are formed on several respective parts of the outer side walls of the core.
  • three flexible corrugated portions are formed on the part of the outer side walls of the core. Two of the three flexible corrugated portions are respectively adjacent to the first and second fixing flanges while one of the three flexible corrugated portions is centered or not with respect to said fixing flanges.
  • the cross section of the core along the channel is circular, elliptical, oval, hexagonal, square or rectangular.
  • the cross section of the core is non-constant along the channel.
  • the two fixing flanges each comprise a reinforcement in order to increase the rigidity thereof.
  • the outer side walls of the core represent an electroformed part. Inserts or other fasteners are encapsulated in the electroformed part.
  • Figure 1 illustrates a perspective view of a flexible waveguide device, bellows type, in a folded configuration, according to one embodiment of the invention
  • Figure 2 illustrates a side view of the waveguide device according to Figure 1 in a second position in which the device is arranged along a longitudinal axis when the bellows is in a deployed configuration
  • figure 3 illustrates a view similar to figure 2 when the bellows is in a compressed configuration
  • ⁇ figure 4 illustrates a view similar to figure 2 when the bellows is in a folded configuration
  • Figure 5 illustrates a side view of a mandrel used for the manufacture of the flexible waveguide device according to Figures 1 to 4
  • ⁇ Figure 6 illustrates an axial section of a mandrel with a metal layer formed by electroplating
  • figure 7 shows a view similar to figure 6 after the mandrel has been dissolved out with two flanges intended to be attached to both ends of the flexible waveguide device
  • ⁇ figure 8 shows a perspective view of a waveguide according to another embodiment when the bellows is in an unfolded configuration
  • Figure 9 illustrates the waveguide of Figure 8 when in a folded configuration.
  • the flexible waveguide device 10, of the bellows type, illustrated by Figures 1 to 4 comprises a core 12 having outer side walls 14a and inner 14b ( Figure 6).
  • the internal walls 14b define a waveguide channel 16.
  • Two fixing flanges 18a, 18b are connected to the respective ends of the core 12.
  • One or both fixing flanges 18a, 18b may include a reinforcement (not shown) so as to increase the rigidity of these. this.
  • a flexible corrugated portion 20, of the bellows type, is formed on the outer side walls 14a of the core 12.
  • the flexible portion 20 of the waveguide device 10 is centered relative to the two fixing flanges 18a, 18b and comprises a plurality of ribs 22 adjacent. These ribs 22 extend along the periphery of the core 12 in a substantially rectangular path. The trajectory of the ribs may however vary depending on the geometry of the core 12.
  • the ribs 22 can for example follow a circular path.
  • the distance between each adjacent rib can vary between 0.1 and 5.0 mm and preferably between 0.5 and 2.0 mm when the device changes from a compressed configuration to a deployed configuration.
  • the waveguide device 10, illustrated in particular by Figure 1 is made from a mandrel 30, illustrated in Figure 5, which defines the outer casing of the device 10.
  • the mandrel 30 is produced by additive manufacturing.
  • additive manufacturing denotes any method of manufacturing the mandrel 30 by adding material, according to the computer data stored on the computer medium and defining the geometric shape of the mandrel.
  • the expression also designates other manufacturing methods by hardening or coagulation of liquid or powder in particular, including without limitation methods based on ink jets (binder jetting), DED (Direct Energy Déposition), EBFF (Electron Beam Freedom Fabrication), FDM (Fused Déposition Modeling) PFF (Plastic Free Forming), by aerosols, BPM (Ballistic Particle Manufaturing), SLM (Sélective Laser Melting), SLS (Sélective Laser Sintering), ALM (Additive Layer Manuafcturing), polyjet, EBM (Electron Beam Melting), light curing, etc.
  • the mandrel 30 is preferably manufactured so as to obtain a hollow mandrel with a minimum wall thickness determined so that the mandrel 30 has sufficient mechanical strength for the electrodeposition step while having the advantage of being able to be dissolved quickly, the minimum time to dissolve the mandrel being of the order of 4 hours.
  • the mandrel 30 obtained by additive manufacturing is subjected to a surface treatment to make it suitable for depositing a metal layer 25 by electrodeposition ( Figure 6).
  • Copper or copper alloys such as copper-tin, copper-zinc, or silver or silver alloy of varying thickness between 0.05mm and 5mm is deposited on the surface of the mandrel by electrodeposition.
  • the uniformity of the thickness over the entire layer of the deposited metal is very important to obtain a flexible waveguide with good mechanical characteristics.
  • the solvent bath can be a succession of acid or basic type bath with immersion times ranging from 1 hour to 48 hours.
  • the two fixing flanges 18a, 18b are fixed to the respective ends of the core 12, for example by brazing.
  • the two fixing flanges 18a, 18b are integrated into the geometry of the mandrel so that the fixing flanges are integral with the respective ends of the core 12.
  • Inserts or other fasteners can be assembled on the mandrel 30, then encapsulate in the metal layer when the latter is electroformed on the outer shell of the mandrel 30 to form the core 12 of the device 10.
  • the waveguide device 10 may include several distinct flexible corrugated portions formed on several respective parts of the outer side walls of the core.
  • the waveguide device 10 may have three flexible corrugated portions which are formed on the part of the side walls. external 14a of the core 12. Two of the three flexible corrugated portions are respectively adjacent to the first and second fixing flanges 18a, 18b while one of the three flexible corrugated portions is centered or not with respect to the two fixing flanges 18a, 18b.
  • the cross section of the core 12 along the channel 16 of the waveguide device can for example be circular, elliptical, oval, hexagonal, square or rectangular.
  • Figures 7 and 8 illustrate a waveguide device 10 of rectangular section according to another embodiment in an unfolded and folded configuration respectively.
  • the device 10 comprises a flexible corrugated portion 20 comprising several adjacent circumferential ribs 22. Each adjacent rib 22 does not have a corrugation along their circumference.
  • the circumferential ribs 22 each lie in a plane orthogonal to the central axis of the channel of the waveguide device 10.
  • the waveguide device obtained by this manufacturing method has a high mechanical resistance to bending and thus makes it possible to facilitate its assembly.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Waveguides (AREA)
  • Details Of Aerials (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Abstract

The invention relates to a flexible waveguide device (10), of the bellows type, for guiding a radiofrequency signal at a specified frequency. The device (10) comprises: a core (12) comprising outer (14a) and inner (14b) lateral walls, the inner surfaces (14b) delimiting a waveguide channel (16); two fastening flanges (18a, 18b) connected to the respective ends of the core (12), and at least one flexible corrugated portion (20). The flexible corrugated portion (20) is formed over part of the outer lateral walls (14a) of the core (12). This corrugated portion (20) comprises a plurality of circumferential ribs (20) which are adjacent to one another. Each rib (22) is devoid of a corrugation along its circumference. The invention also relates to a method for manufacturing the flexible waveguide device.

Description

Dispositif à guide d'ondes flexible et procédé de fabrication d'un tel dispositif Flexible waveguide device and method of manufacturing such a device
Domaine technique Technical area
[0001] La présente invention concerne un dispositif à guide d'ondes et plus particulièrement un dispositif à guide d'ondes flexible capable d'adapter sa longueur et l'orientation de ses extrémités en fonction des circonstances afin de faciliter son assemblage. Le dispositif à guide d'ondes flexible selon l'invention a par ailleurs l'avantage d'absorber des vibrations ou des chocs. L'invention concerne également un procédé de fabrication d'un tel dispositif. The present invention relates to a waveguide device and more particularly a flexible waveguide device capable of adapting its length and the orientation of its ends depending on the circumstances in order to facilitate its assembly. The flexible waveguide device according to the invention also has the advantage of absorbing vibrations or shocks. The invention also relates to a method of manufacturing such a device.
Etat de la technique [0002] Les signaux radiofréquence (RF) peuvent se propager soit dans un espace libre, soit dans des dispositifs à guide d'ondes. Ces dispositifs à guide d'ondes sont utilisés pour canaliser les signaux RF ou pour les manipuler dans le domaine spatial ou fréquentiel. STATE OF THE ART [0002] The radiofrequency (RF) signals can propagate either in free space or in waveguide devices. These waveguide devices are used to channel RF signals or to manipulate them in the spatial or frequency domain.
[0003] La présente invention concerne en particulier les dispositifs RF passifs qui permettent de propager et de manipuler des signaux radiofréquence sans utiliser de composants électroniques actifs. Les guides d'onde passifs peuvent être répartis en trois catégories distinctes : [0003] The present invention relates in particular to passive RF devices which make it possible to propagate and manipulate radio frequency signals without using active electronic components. Passive waveguides can be divided into three distinct categories:
• Les dispositifs basés sur le guidage d'ondes à l'intérieur de canaux métalliques creux, couramment appelés guides d'ondes. · Les dispositifs basés sur le guidage d'ondes à l'intérieur de substrats diélectriques. • Les dispositifs basés sur le guidage d'ondes au moyen d'ondes de surface sur des substrats métalliques tels que des circuits imprimés PCB, des microstrips, etc. • Devices based on guiding waves inside hollow metal channels, commonly called waveguides. · Devices based on guiding waves inside dielectric substrates. • Devices based on waveguiding by means of surface waves on metal substrates such as printed circuit boards PCBs, microstrips, etc.
[0004] La présente invention concerne en particulier la première catégorie ci-dessus, collectivement désignée par la suite comme guides d'ondes. Des exemples de tels dispositifs incluent des guides d'ondes en tant que tels, des filtres, des antennes, des convertisseurs de mode, etc. Ils peuvent être utilisés pour le routage de signal, le filtrage fréquentiel, la séparation ou recombinaison de signaux, l'émission ou la réception de signaux dans ou depuis l'espace libre, etc. The present invention relates in particular to the first category above, collectively hereinafter referred to as waveguides. Examples of such devices include waveguides as such, filters, antennas, mode converters, etc. They can be used for signal routing, frequency filtering, signal separation or recombination, transmission or reception of signals in or from free space, etc.
[0005] Les guide d'ondes sont généralement fabriqués en matériau conducteur, par exemple en métal, par extrusion ou pliage. La réalisation de guides d'ondes avec des sections complexes par les méthodes de fabrication conventionnels est difficile et coûteuse. Des travaux récents ont cependant démontré la possibilité de réaliser des composants guide d'ondes à l'aide de méthodes de fabrication additive, par exemple par impression 3D. On connaît en particulier la fabrication additive de guides d'ondes formés dans des matériaux conducteurs. [0005] The waveguides are generally made from a conductive material, for example metal, by extrusion or bending. The production of waveguides with complex sections by conventional manufacturing methods is difficult and expensive. However, recent work has demonstrated the possibility of producing waveguide components using additive manufacturing methods, for example by 3D printing. In particular, the additive manufacturing of waveguides formed from conductive materials is known.
[0006] On connaît également des guides d'ondes flexibles réalisés par fabrication additive. [0006] Flexible waveguides produced by additive manufacturing are also known.
[0007] A titre d'exemple, WO18029455 divulgue un ensemble de guide d'ondes pour un réseau de signaux radiofréquence, RF, comprenant une pluralité de guides d'ondes, dans lequel au moins deux de la pluralité de guides d'ondes sont formés intégralement les uns avec les autres. Au moins un de la pluralité de guides d'ondes peut être flexible, ce qui peut améliorer les charges d'interface et permettre un ajustement des plans d'interface pour faciliter le montage. [0008] GB1078575 divulgue un procédé conventionnel de fabrication de guides d'ondes flexibles du type "soufflet". Un mandrin ayant la même forme que l'intérieur d'un guide d'ondes flexible est réalisé. Une couche de cuivre ou d'alliage de cuivre est ensuite appliquée par électroformage sur le mandrin de sorte à obtenir l'épaisseur nécessaire sur la surface du mandrin. Une bride est ensuite soudée à chaque extrémité de la couche appliquée. Enfin, un film protecteur en caoutchouc par moulage est appliqué sur la surface de la couche électroformée entre les deux brides, puis le mandrin est retiré. [0009] Le guides d'ondes décrit dans GB1078575 présente notamment l'inconvénient d'être difficile à concevoir, ce qui a un impact non-négligeable sur le coût de revient de ce type de guide d'ondes. [0007] By way of example, WO18029455 discloses a waveguide assembly for a radio frequency, RF signal network comprising a plurality of waveguides, wherein at least two of the plurality of waveguides are formed integrally with each other. At least one of the plurality of waveguides can be flexible, which can improve interface loads and allow adjustment of interface planes for ease of mounting. [0008] GB1078575 discloses a conventional method of manufacturing flexible waveguides of the "bellows" type. A mandrel having the same shape as the interior of a flexible waveguide is made. A layer of copper or copper alloy is then applied by electroforming on the mandrel so as to obtain the necessary thickness on the surface of the mandrel. A flange is then welded to each end of the applied layer. Finally, a protective rubber film by molding is applied to the surface of the electroformed layer between the two flanges, and then the mandrel is removed. [0009] The waveguides described in GB1078575 in particular have the drawback of being difficult to design, which has a non-negligible impact on the cost price of this type of waveguide.
[0010] WO2019/243766 divulgue une section de guide d'ondes flexible allongée pour des signaux radiofréquence. La section de guide d'ondes est ondulée dans la direction longitudinale, et la section de guide d'ondes est au moins partiellement ondulée dans une direction circonférentielle perpendiculaire à la direction longitudinale. La fabrication d'un tel quide d'ondes est relativement difficile à mettre en oeuvre. WO2019 / 243766 discloses an elongated flexible waveguide section for radio frequency signals. The waveguide section is corrugated in the longitudinal direction, and the waveguide section is at least partially corrugated in a circumferential direction perpendicular to the longitudinal direction. The manufacture of such a waveform is relatively difficult to implement.
[0011] Un but de la présente invention est de proposer un procédé de fabrication d'un dispositif à guide d'ondes flexible exempt des limitations de l'art antérieur. An object of the present invention is to provide a method of manufacturing a flexible waveguide device free from the limitations of the prior art.
[0012] En particulier, un but de la présente invention est de proposer un dispositif à guide d'ondes flexible facile à concevoir par un procédé de fabrication amélioré. [0013] Un autre but de la présente invention est de proposer un dispositif à guide d'ondes flexible à coûts réduits. [0014] Selon l'invention, ces buts sont atteints notamment au moyen d'un procédé de fabrication d'un dispositif à guide d'ondes flexible, du type soufflet, comportant une âme traversée de part en part par un canal pour guider un signal radiofréquence à une fréquence déterminée. Le procédé de fabrication comporte les étapes suivantes : In particular, an object of the present invention is to provide a flexible waveguide device easy to design by an improved manufacturing process. Another object of the present invention is to provide a flexible waveguide device at reduced costs. According to the invention, these objects are achieved in particular by means of a method of manufacturing a flexible waveguide device, of the bellows type, comprising a core traversed right through by a channel for guiding a radiofrequency signal at a determined frequency. The manufacturing process includes the following steps:
- réaliser par fabrication additive un mandrin dont l'enveloppe externe comporte une portion ondulée comprenant une pluralité de nervures circonférentielles adjacentes, - déposer une couche métallique sur l'enveloppe externe du mandrin par électroformage pour former l'âme du dispositif, et - produce by additive manufacturing a mandrel whose outer casing comprises a corrugated portion comprising a plurality of adjacent circumferential ribs, - deposit a metal layer on the outer casing of the mandrel by electroforming to form the core of the device, and
- retirer le mandrin de la couche métallique électroformée afin de définir le canal. - remove the mandrel from the electroformed metal layer in order to define the channel.
[0015] Selon une forme d'exécution, la couche métallique électroformée possède une épaisseur homogène se situant entre 0.05 et 5 mm et de préférence entre 0.1 et 0.5mm. [0015] According to one embodiment, the electroformed metal layer has a homogeneous thickness lying between 0.05 and 5 mm and preferably between 0.1 and 0.5 mm.
[0016] Selon une forme d'exécution, le mandrin est fabriqué de sorte à obtenir un mandrin de forme évidée. According to one embodiment, the mandrel is manufactured so as to obtain a mandrel of recessed shape.
[0017] Selon une forme d'exécution, le mandrin est éliminé par dissolution au moyen d'une solution dissolvante. According to one embodiment, the mandrel is removed by dissolution using a dissolving solution.
[0018] Selon une forme d'exécution, le mandrin et la couche métallique formée sur l'enveloppe externe du mandrin sont plongées dans un bain dissolvant. According to one embodiment, the mandrel and the metal layer formed on the outer casing of the mandrel are immersed in a solvent bath.
[0019] Selon une forme d'exécution, deux brides de fixation sont fixées aux extrémités respectives de l'âme, de préférence par brasage. [0020] Selon une forme d'exécution, deux brides de fixation sont intégrées à la géométrie du mandrin de sorte à ce que les brides de fixation fassent corps avec les extrémités respectives de l'âme. [0019] According to one embodiment, two fixing flanges are fixed to the respective ends of the core, preferably by brazing. [0020] According to one embodiment, two fixing flanges are integrated into the geometry of the mandrel so that the fixing flanges are integral with the respective ends of the core.
[0021] Selon une forme d'exécution, des inserts ou autres éléments de fixation sont assemblés sur le mandrin, puis encapsuler dans la couche métallique lorsque celle-ci est électroformée sur l'enveloppe externe du mandrin pour former l'âme du dispositif. According to one embodiment, inserts or other fixing elements are assembled on the mandrel, then encapsulate in the metal layer when the latter is electroformed on the outer casing of the mandrel to form the core of the device.
[0022] Un autre aspect de l'invention porte sur un dispositif à guide d'ondes flexible, du type soufflet, pour guider un signal radiofréquence à une plage de fréquence déterminée. Le dispositif comprend : Another aspect of the invention relates to a flexible waveguide device, of the bellows type, for guiding a radiofrequency signal at a determined frequency range. The device includes:
- une âme comprenant des parois latérales externe et interne, les parois internes délimitant un canal de guide d'ondes, - a core comprising outer and inner side walls, the inner walls delimiting a waveguide channel,
- deux brides de fixations connectées aux extrémités respectives de l'âme ou faisant corps avec lesdites extrémités respectives, et - au moins une portion ondulée flexible. - two fixing flanges connected to the respective ends of the core or forming an integral part with said respective ends, and - at least one flexible corrugated portion.
[0023] La portion ondulée flexible est formée sur une partie des parois latérales externes de l'âme et comporte une pluralité de nervures circonférentielles autour de l'âme et qui sont adjacentes les unes par rapport aux autres. Chaque nervure se trouve dans un plan orthogonal à l'axe du canal lorsque le dispositif à guide d'ondes flexible se trouve dans une configuration non-pliée. Chaque nervure est dépourvue d'ondulation le long de sa circonférence. The flexible corrugated portion is formed on a part of the outer side walls of the core and comprises a plurality of circumferential ribs around the core and which are adjacent to each other. Each rib lies in a plane orthogonal to the axis of the channel when the flexible waveguide device is in an unfolded configuration. Each rib is devoid of ripple along its circumference.
[0024] Selon une forme d'exécution, la portion ondulée flexible est centrée ou non par rapport aux deux brides de fixation. [0025] Selon une forme d'exécution, la distance entre chaque nervure adjacente peut varier entre 0.1 et 5.0mm et de préférence entre 0.5 et 2.0mm lorsque que le dispositif passe d'une configuration comprimée à une configuration déployée. According to one embodiment, the flexible corrugated portion is or is not centered relative to the two fixing flanges. According to one embodiment, the distance between each adjacent rib can vary between 0.1 and 5.0mm and preferably between 0.5 and 2.0mm when the device changes from a compressed configuration to a deployed configuration.
[0026] Selon une forme d'exécution, plusieurs portions ondulées flexibles distinctes sont formées sur plusieurs parties respectives des parois latérales externe de l'âme. According to one embodiment, several distinct flexible corrugated portions are formed on several respective parts of the outer side walls of the core.
[0027] Selon une forme d'exécution, trois portions ondulées flexibles sont formées sur la partie des parois latérales externe de l'âme. Deux des trois portions ondulées flexibles sont respectivement adjacentes aux première et seconde brides de fixation alors que l'une des trois portions ondulées flexibles est centrée ou non par rapport aux dites brides de fixation. According to one embodiment, three flexible corrugated portions are formed on the part of the outer side walls of the core. Two of the three flexible corrugated portions are respectively adjacent to the first and second fixing flanges while one of the three flexible corrugated portions is centered or not with respect to said fixing flanges.
[0028] Selon une forme d'exécution, la section transversale de l'âme le long du canal est circulaire, elliptique, ovale, hexagonale, carrée ou rectangulaire. According to one embodiment, the cross section of the core along the channel is circular, elliptical, oval, hexagonal, square or rectangular.
[0029] Selon une forme d'exécution, la section transversale de l'âme est non-constante le long du canal. According to one embodiment, the cross section of the core is non-constant along the channel.
[0030] Selon une forme d'exécution, les deux brides de fixation comportent chacune un renfort afin d'augmenter la rigidité de celles-ci. According to one embodiment, the two fixing flanges each comprise a reinforcement in order to increase the rigidity thereof.
[0031] Selon une forme d'exécution, les parois latérales externe de l'âme représentent une partie électroformée. Des inserts ou autres éléments de fixation sont encapsulés dans la partie électroformée. According to one embodiment, the outer side walls of the core represent an electroformed part. Inserts or other fasteners are encapsulated in the electroformed part.
Brève description des figures Brief description of the figures
[0032] Des exemples de mise en oeuvre de l'invention sont indiqués dans la description illustrée par les figures annexées dans lesquelles : • la figure 1 illustre une vue en perspective d'un dispositif à guide d'ondes flexible, du type soufflet, dans une configuration pliée, selon une forme d'exécution de l'invention, Examples of implementation of the invention are indicated in the description illustrated by the appended figures in which: • Figure 1 illustrates a perspective view of a flexible waveguide device, bellows type, in a folded configuration, according to one embodiment of the invention,
• la figure 2 illustre une vue d'un côté du dispositif à guide d'onde selon la figure 1 selon une seconde position dans laquelle le dispositif est agencé selon un axe longitudinal lorsque le soufflet est dans une configuration déployée, • Figure 2 illustrates a side view of the waveguide device according to Figure 1 in a second position in which the device is arranged along a longitudinal axis when the bellows is in a deployed configuration,
• la figure 3 illustre une vue similaire à la figure 2 lorsque le soufflet est dans une configuration comprimée, · la figure 4 illustre une vue similaire à la figure 2 lorsque le soufflet est dans une configuration pliée, • figure 3 illustrates a view similar to figure 2 when the bellows is in a compressed configuration, · figure 4 illustrates a view similar to figure 2 when the bellows is in a folded configuration,
• la figure 5 illustre une vue de côté d'un mandrin utilisé pour la fabrication du dispositif à guide d'ondes flexible selon les figures 1 à 4, · la figure 6 illustre une coupe axial d'un mandrin avec une couche métallique formée par électrodéposition, • Figure 5 illustrates a side view of a mandrel used for the manufacture of the flexible waveguide device according to Figures 1 to 4, · Figure 6 illustrates an axial section of a mandrel with a metal layer formed by electroplating,
• la figure 7 illustre une vue similaire à la figure 6 après que le mandrin ait été éliminé par dissolution avec deux brides destinées à être fixées aux deux extrémités du dispositif à guide d'ondes flexible, · la figure 8 illustre une vue en perspective d'un guide d'onde selon une autre forme de réalisation lorsque le soufflet est dans une configuration non-pliée, et • la figure 9 illustre le guide d'onde de la figure 8 lorsqu'il est dans une configuration pliée. • figure 7 shows a view similar to figure 6 after the mandrel has been dissolved out with two flanges intended to be attached to both ends of the flexible waveguide device, · figure 8 shows a perspective view of a waveguide according to another embodiment when the bellows is in an unfolded configuration, and • Figure 9 illustrates the waveguide of Figure 8 when in a folded configuration.
Exemple(s) de mode de réalisation de l'invention Example (s) of embodiment of the invention
[0033] Le dispositif à guide d'ondes flexible 10, du type soufflet, illustré par les figures 1 à 4 comprend une âme 12 comportant des parois latérales externes 14a et internes 14b (figure 6). Les parois internes 14b délimitent un canal de guide d'ondes 16. The flexible waveguide device 10, of the bellows type, illustrated by Figures 1 to 4 comprises a core 12 having outer side walls 14a and inner 14b (Figure 6). The internal walls 14b define a waveguide channel 16.
[0034] Deux brides de fixation 18a, 18b sont connectées aux extrémités respectives de l'âme 12. L'une ou les deux brides de fixation 18a, 18b peuvent comporter un renfort (non illustré) de sorte à augmenter la rigidité de celles- ci. Two fixing flanges 18a, 18b are connected to the respective ends of the core 12. One or both fixing flanges 18a, 18b may include a reinforcement (not shown) so as to increase the rigidity of these. this.
[0035] Une portion ondulée flexible 20, du type soufflet, est formée sur les parois latérales externes 14a de l'âme 12. A flexible corrugated portion 20, of the bellows type, is formed on the outer side walls 14a of the core 12.
[0036] La portion flexible 20 du dispositif à guide d'ondes 10 est centrée par rapport aux deux brides de fixation 18a, 18b et comporte une pluralité de nervures 22 adjacentes. Ces nervures 22 s'étendent le long du pourtour de l'âme 12 selon une trajectoire sensiblement rectangulaire. La trajectoire des nervures peut cependant varier en fonction de la géométrie de l'âme 12. The flexible portion 20 of the waveguide device 10 is centered relative to the two fixing flanges 18a, 18b and comprises a plurality of ribs 22 adjacent. These ribs 22 extend along the periphery of the core 12 in a substantially rectangular path. The trajectory of the ribs may however vary depending on the geometry of the core 12.
[0037] Les nervures 22 peuvent par exemple suivre une trajectoire circulaire. La distance entre chaque nervure adjacente peut varier entre 0.1 et 5.0 mm et de préférence entre 0.5 et 2.0 mm lorsque le dispositif passe d'une configuration comprimée à une configuration déployée. The ribs 22 can for example follow a circular path. The distance between each adjacent rib can vary between 0.1 and 5.0 mm and preferably between 0.5 and 2.0 mm when the device changes from a compressed configuration to a deployed configuration.
[0038] Le dispositif à guide d'ondes 10, illustré notamment par la figure 1, est réalisé à partir d'un mandrin 30, illustré à la figure 5, qui définit l'enveloppe externe du dispositif 10. Le mandrin 30 est réalisé par fabrication additive. The waveguide device 10, illustrated in particular by Figure 1, is made from a mandrel 30, illustrated in Figure 5, which defines the outer casing of the device 10. The mandrel 30 is produced by additive manufacturing.
[0039] Dans la présente demande, l'expression «fabrication additive » désigne tout procédé de fabrication du mandrin 30 par ajout de matière, selon les données informatiques stockée sur le support informatique et définissant la forme géométrique du mandrin. In the present application, the expression "additive manufacturing" denotes any method of manufacturing the mandrel 30 by adding material, according to the computer data stored on the computer medium and defining the geometric shape of the mandrel.
[0040] Outre la stéréolithographie, l'expression désigne aussi d'autres méthodes de fabrication par durcissement ou coagulation de liquide ou de poudre notamment, y compris sans limitation des méthodes basées sur les jets d'encre (binder jetting), DED (Direct Energy Déposition), EBFF (Electron Beam Freedom Fabrication), FDM (Fused Déposition Modeling) PFF (Plastic Free Forming), par aérosols, BPM (Ballistic Particle Manufaturing), SLM (Sélective Laser Melting), SLS (Sélective Laser Sintering), ALM (Additive Layer Manuafcturing), polyjet, EBM (Electron Beam Melting), photopolymérisation, etc. Besides stereolithography, the expression also designates other manufacturing methods by hardening or coagulation of liquid or powder in particular, including without limitation methods based on ink jets (binder jetting), DED (Direct Energy Déposition), EBFF (Electron Beam Freedom Fabrication), FDM (Fused Déposition Modeling) PFF (Plastic Free Forming), by aerosols, BPM (Ballistic Particle Manufaturing), SLM (Sélective Laser Melting), SLS (Sélective Laser Sintering), ALM (Additive Layer Manuafcturing), polyjet, EBM (Electron Beam Melting), light curing, etc.
[0041] Le mandrin 30 est de préférence fabriqué de sorte à obtenir un mandrin évidé avec une épaisseur de parois minimale déterminée de sorte que le mandrin 30 possède une résistance mécanique suffisante pour l'étape d'électrodéposition tout en ayant l'avantage de pouvoir être dissout rapidement, la durée minimale pour dissoudre le mandrin étant de l'ordre de 4 heures. The mandrel 30 is preferably manufactured so as to obtain a hollow mandrel with a minimum wall thickness determined so that the mandrel 30 has sufficient mechanical strength for the electrodeposition step while having the advantage of being able to be dissolved quickly, the minimum time to dissolve the mandrel being of the order of 4 hours.
[0042] Le mandrin 30 obtenu par fabrication additive est soumis à un traitement de surface pour le rendre apte au dépôt d'une couche métallique 25 par électrodéposition (figure 6). [0043] Du cuivre ou des alliages de cuivre, tels que le cuivre-étain, le cuivre-zinc, ou de l'argent ou de l'alliage d'argent d'une épaisseur variant entre 0.05mm et 5mm est déposé sur la surface du mandrin par électrodéposition. L'uniformité de l'épaisseur sur toute la couche du métal déposée est très importante pour obtenir un guide d'ondes flexible avec de bonnes caractéristiques mécaniques. [0044] Un fois que la couche métallique est déposée sur l'enveloppe externe du mandrin 30 par électroformage pour former l'âme 12 du dispositif 10, le mandrin 30 et la couche métallique 25 formée sur l'enveloppe externe du mandrin sont plongés dans un bain dissolvant. The mandrel 30 obtained by additive manufacturing is subjected to a surface treatment to make it suitable for depositing a metal layer 25 by electrodeposition (Figure 6). Copper or copper alloys, such as copper-tin, copper-zinc, or silver or silver alloy of varying thickness between 0.05mm and 5mm is deposited on the surface of the mandrel by electrodeposition. The uniformity of the thickness over the entire layer of the deposited metal is very important to obtain a flexible waveguide with good mechanical characteristics. Once the metal layer is deposited on the outer shell of the mandrel 30 by electroforming to form the core 12 of the device 10, the mandrel 30 and the metal layer 25 formed on the outer shell of the mandrel are immersed in a dissolving bath.
[0045] Le bain dissolvant peut être une succession de bain de type acide ou basique avec des durées d'immersion allant de 1h à 48 h. The solvent bath can be a succession of acid or basic type bath with immersion times ranging from 1 hour to 48 hours.
[0046] Selon une forme d'exécution, au cours de la fabrication du dispositif à guide d'ondes flexible 10, les deux brides de fixation 18a, 18b sont fixées aux extrémités respectives de l'âme 12, par exemple par brasage. Selon une alternative, les deux brides de fixation 18a, 18b sont intégrées à la géométrie du mandrin de sorte à ce que les brides de fixation fassent corps avec les extrémités respectives de l'âme 12. According to one embodiment, during the manufacture of the flexible waveguide device 10, the two fixing flanges 18a, 18b are fixed to the respective ends of the core 12, for example by brazing. According to an alternative, the two fixing flanges 18a, 18b are integrated into the geometry of the mandrel so that the fixing flanges are integral with the respective ends of the core 12.
[0047] Des inserts ou autres éléments de fixation (non-illustrés) peuvent être assemblés sur le mandrin 30, puis encapsuler dans la couche métallique lorsque celle-ci est électroformée sur l'enveloppe externe du mandrin 30 pour former l'âme 12 du dispositif 10. Inserts or other fasteners (not shown) can be assembled on the mandrel 30, then encapsulate in the metal layer when the latter is electroformed on the outer shell of the mandrel 30 to form the core 12 of the device 10.
[0048] Le dispositif à guide d'ondes 10 peut comporter plusieurs portions ondulées flexibles distinctes formées sur plusieurs parties respectives des parois latérales externe de l'âme. The waveguide device 10 may include several distinct flexible corrugated portions formed on several respective parts of the outer side walls of the core.
[0049] Par exemple, le dispositif à guide d'ondes 10 peut comporter trois portions ondulées flexibles qui sont formées sur la partie des parois latérales externe 14a de l'âme 12. Deux des trois portions ondulées flexibles sont respectivement adjacentes aux première et seconde brides de fixation 18a, 18b alors que l'une des trois portions ondulées flexibles est centrée ou non par rapport aux deux brides de fixation 18a, 18b. [0050] La section transversale de l'âme 12 le long du canal 16 du dispositif à guide d'onde peut par exemple être circulaire, elliptique, ovale, hexagonale, carrée ou rectangulaire. [0049] For example, the waveguide device 10 may have three flexible corrugated portions which are formed on the part of the side walls. external 14a of the core 12. Two of the three flexible corrugated portions are respectively adjacent to the first and second fixing flanges 18a, 18b while one of the three flexible corrugated portions is centered or not with respect to the two fixing flanges 18a, 18b. The cross section of the core 12 along the channel 16 of the waveguide device can for example be circular, elliptical, oval, hexagonal, square or rectangular.
[0051] Les figures 7 et 8 illustrent un dispositif à guide d'ondes 10 de section rectangulaire selon une autre forme de réalisation dans une configuration non-pliée et pliée respectivement. Selon cette forme de réalisation, le dispositif 10 comporte une portion ondulée flexible 20 comportant plusieurs nervures circonférentielles adjacentes 22. Chaque nervure adjacente 22 ne comporte pas d'ondulation le long de leur circonférence. Lorsque que le dispositif à guide d'ondes 10 se trouve dans ne configuration non-pliée, les nervures circonférentielles 22 se trouvent chacune dans un plan orthogonal à l'axe central du canal du dispositif à guide d'ondes 10. Figures 7 and 8 illustrate a waveguide device 10 of rectangular section according to another embodiment in an unfolded and folded configuration respectively. According to this embodiment, the device 10 comprises a flexible corrugated portion 20 comprising several adjacent circumferential ribs 22. Each adjacent rib 22 does not have a corrugation along their circumference. When the waveguide device 10 is in an unfolded configuration, the circumferential ribs 22 each lie in a plane orthogonal to the central axis of the channel of the waveguide device 10.
[0052] Le dispositif à guide d'ondes obtenu par cette méthode de fabrication possède une grande résistance mécanique à la flexion et permet ainsi de faciliter son assemblage. The waveguide device obtained by this manufacturing method has a high mechanical resistance to bending and thus makes it possible to facilitate its assembly.

Claims

Revendications Claims
1. Procédé de fabrication d'un dispositif à guide d'ondes flexible (10), du type soufflet, comportant une âme (12) traversée de part en part par un canal (16) pour guider un signal radiofréquence à une plage de fréquences déterminée, le procédé de fabrication comportant les étapes suivantes : 1. A method of manufacturing a flexible waveguide device (10), of the bellows type, comprising a core (12) traversed right through by a channel (16) for guiding a radiofrequency signal at a range of frequencies. determined, the manufacturing process comprising the following steps:
- réaliser par fabrication additive un mandrin (30) comportant une enveloppe externe comprenant une portion ondulée (20) possédant une pluralité de nervures circonférentielles (22) adjacentes, - Producing by additive manufacturing a mandrel (30) comprising an outer casing comprising a corrugated portion (20) having a plurality of adjacent circumferential ribs (22),
- déposer une couche métallique (25) sur l'enveloppe externe du mandrin (30) par électroformage pour former l'âme (12) du dispositif (10), et- depositing a metal layer (25) on the outer casing of the mandrel (30) by electroforming to form the core (12) of the device (10), and
- retirer le mandrin (30) de la couche métallique électroformée afin de définir le canal (16). - remove the mandrel (30) from the electroformed metal layer in order to define the channel (16).
2. Procédé selon la revendication 1, dans lequel la couche métallique électroformée possède une épaisseur homogène se situant entre 0.05 et 5mm et de préférence entre 0.1 et 0.5mm. 2. The method of claim 1, wherein the electroformed metal layer has a homogeneous thickness lying between 0.05 and 5mm and preferably between 0.1 and 0.5mm.
3. Procédé de fabrication selon l'une des revendications précédentes, dans lequel le mandrin (30) est fabriqué de sorte à obtenir un mandrin de forme évidée. 3. Manufacturing method according to one of the preceding claims, wherein the mandrel (30) is manufactured so as to obtain a mandrel of recessed shape.
4. Procédé de fabrication selon l'une des revendications précédentes, dans lequel le mandrin (30) est éliminé par dissolution au moyen d'une solution dissolvante. 4. The manufacturing method according to one of the preceding claims, wherein the mandrel (30) is removed by dissolution by means of a dissolving solution.
5. Procédé de fabrication selon la revendication précédente, dans lequel le mandrin (30) et la couche métallique (25) formée sur l'enveloppe externe du mandrin sont plongés dans un bain dissolvant. 5. The manufacturing method according to the preceding claim, wherein the mandrel (30) and the metal layer (25) formed on the outer shell of the mandrel are immersed in a solvent bath.
6. Procédé de fabrication selon l'une des revendications précédentes, dans lequel deux brides de fixation (18a, 18b) sont fixées aux extrémités respectives de l'âme (12), de préférence par brasage. 6. The manufacturing method according to one of the preceding claims, wherein two fixing flanges (18a, 18b) are fixed to the respective ends of the core (12), preferably by brazing.
7. Procédé de fabrication selon l'une des revendications 1 à 5, dans lequel deux brides de fixation (18a, 18b) sont intégrées à la géométrie du mandrin de sorte à ce que lesdites brides de fixation fassent corps avec les extrémités respectives de l'âme (12). 7. The manufacturing method according to one of claims 1 to 5, wherein two fixing flanges (18a, 18b) are integrated into the geometry of the mandrel so that said fixing flanges are integral with the respective ends of the 'soul (12).
8. Procédé de fabrication selon l'une des revendications précédentes, dans lequel des inserts ou autres éléments de fixation sont assemblés sur le mandrin (30), puis encapsuler dans la couche métallique (25) lorsque celle-ci est électroformée sur l'enveloppe externe du mandrin (30) pour former l'âme (12) du dispositif (10). 8. The manufacturing method according to one of the preceding claims, wherein the inserts or other fasteners are assembled on the mandrel (30), then encapsulate in the metal layer (25) when the latter is electroformed on the casing. outer mandrel (30) to form the core (12) of the device (10).
9. Dispositif à guide d'ondes flexible (10), du type soufflet, pour guider un signal radiofréquence à une plage de fréquence déterminée, le dispositif (10) comprenant : une âme (12) comprenant des parois latérales externe (14a) et interne (14b), les parois interne (14b) délimitant un canal (16) de guide d'ondes, deux brides de fixation (18a, 18b) connectées aux extrémités respectives de l'âme (12) ou faisant corps avec lesdites extrémités respectives, et au moins une portion ondulée flexible (20) formée sur une partie des parois latérales externe (14a) de l'âme (12), et comportant une pluralité de nervures circonférentielles adjacentes (22) les unes par rapport aux autres, caractérisé en ce que chaque nervure (22) est dépourvue d'ondulation le long de sa circonférence. 9. A flexible waveguide device (10), of the bellows type, for guiding a radiofrequency signal at a determined frequency range, the device (10) comprising: a core (12) comprising outer side walls (14a) and internal (14b), the internal walls (14b) delimiting a waveguide channel (16), two fixing flanges (18a, 18b) connected to the respective ends of the core (12) or forming one with said respective ends , and at least one flexible corrugated portion (20) formed on a portion of the outer side walls (14a) of the core (12), and having a plurality of adjacent circumferential ribs (22) relative to each other, characterized by that each rib (22) is devoid of corrugation along its circumference.
10. Dispositif (10) selon la revendication précédente, caractérisé en ce que ladite au moins une portion ondulée flexible (20) est centrée ou non par rapport aux deux brides de fixation (18a, 18b). 10. Device (10) according to the preceding claim, characterized in that said at least one flexible corrugated portion (20) is or is not centered with respect to the two fixing flanges (18a, 18b).
11. Dispositif (10) selon la revendication précédente, caractérisé en ce que la distance entre chaque nervure adjacente (22) peut varier entre 0.1 et 5.0 mm et de préférence entre 0.5 et 2.0mm lorsque le dispositif passe d'une configuration comprimée à une configuration déployée. 11. Device (10) according to the preceding claim, characterized in that the distance between each adjacent rib (22) can vary between 0.1 and 5.0 mm and preferably between 0.5 and 2.0mm when the device passes from a compressed configuration to a configuration deployed.
12. Dispositif (10) selon l'une des revendications 9 à 11, caractérisé en ce que plusieurs portions ondulées flexibles distinctes sont formées sur plusieurs parties respectives des parois latérales externe (14b) de l'âme (12). 12. Device (10) according to one of claims 9 to 11, characterized in that several distinct flexible corrugated portions are formed on several respective parts of the outer side walls (14b) of the core (12).
13. Dispositif selon la revendication précédente, caractérisé en ce que trois portions ondulées flexibles sont formées sur la partie des parois latérales externe (14a) de l'âme (12), deux des trois portions ondulées flexibles étant respectivement adjacentes aux première et seconde brides de fixation (18a, 18b) alors que l'une des trois portions ondulées flexibles est centrée ou non par rapport aux dites brides de fixation (18a, 18b). 13. Device according to the preceding claim, characterized in that three flexible corrugated portions are formed on the part of the outer side walls (14a) of the core (12), two of the three flexible corrugated portions being respectively adjacent to the first and second flanges fixing (18a, 18b) while one of the three flexible corrugated portions is or is not centered with respect to said fixing flanges (18a, 18b).
14. Dispositif selon l'une des revendications 9 à 13, caractérisé en ce que la section transversale de l'âme (12) le long du canal (16) est circulaire, elliptique, ovale, hexagonale, carrée ou rectangulaire. 14. Device according to one of claims 9 to 13, characterized in that the cross section of the core (12) along the channel (16) is circular, elliptical, oval, hexagonal, square or rectangular.
15. Dispositif selon l'une des revendications 9 à 14, caractérisé en ce que la section transversale de l'âme (12) est non-constante le long du canal (16). 15. Device according to one of claims 9 to 14, characterized in that the cross section of the core (12) is non-constant along the channel (16).
16. Dispositif selon l'une des revendications 9 à 15, caractérisé en ce que les deux brides de fixation (18a, 18b) comportent chacune un renfort afin d'augmenter la rigidité de celles-ci. 16. Device according to one of claims 9 to 15, characterized in that the two fixing flanges (18a, 18b) each comprise a reinforcement in order to increase the rigidity thereof.
17. Dispositif selon l'une des revendications 9 à 16, caractérisé en ce que les parois latérales externe (14a) de l'âme (12) représentent une partie électroformée, et en ce que des inserts ou autres éléments de fixation sont encapsulés dans la partie électroformée. 17. Device according to one of claims 9 to 16, characterized in that the outer side walls (14a) of the core (12) represent an electroformed part, and in that the inserts or other fixing elements are encapsulated in the electroformed part.
EP21732582.8A 2020-06-17 2021-06-16 Flexible waveguide device and method for manufacturing such a device Pending EP4169118A1 (en)

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FR2006344A FR3111743B1 (en) 2020-06-17 2020-06-17 Flexible waveguide device and method of manufacturing such a device
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GB1078575A (en) 1964-08-19 1967-08-09 Sumitomo Electric Industries Improvements in or relating to flexible waveguides
US3940718A (en) * 1974-02-11 1976-02-24 Tech Systems Corporation Flexible wave guide and method for making same
US6519500B1 (en) * 1999-09-16 2003-02-11 Solidica, Inc. Ultrasonic object consolidation
WO2017039619A1 (en) * 2015-08-31 2017-03-09 Halliburton Energy Services, Inc. Wellbore seals with complex features through additive manufacturing
WO2018029455A1 (en) 2016-08-10 2018-02-15 Airbus Defence And Space Limited Waveguide assembly and manufacturing method thereof
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WO2021255660A1 (en) 2021-12-23

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