EP0121465A1 - Grooved travelling-wave tube sleeve and its manufacturing process - Google Patents
Grooved travelling-wave tube sleeve and its manufacturing process Download PDFInfo
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- EP0121465A1 EP0121465A1 EP84400564A EP84400564A EP0121465A1 EP 0121465 A1 EP0121465 A1 EP 0121465A1 EP 84400564 A EP84400564 A EP 84400564A EP 84400564 A EP84400564 A EP 84400564A EP 0121465 A1 EP0121465 A1 EP 0121465A1
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- sheath
- cylindrical
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- tube
- supports
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
- H01J23/24—Slow-wave structures, e.g. delay systems
- H01J23/26—Helical slow-wave structures; Adjustment therefor
Definitions
- the present invention relates to a traveling wave tube comprising a sheath hollowed out of grooves. It also relates to a method of manufacturing the sheath dug from grooves.
- the invention relates to the field of traveling wave tubes having a helical type delay line, that is to say for example a simple helical delay line, of the "ring and bar” type. "ring and loop” ...
- the delay line will in the following be assimilated to a simple propeller.
- the helical delay line is placed in a cylindrical sheath, generally metallic, to which it is fixed by means of dielectric supports.
- the propeller and the supports are assembled by clamping in the sleeve or sleeve.
- the propeller is made of tungsten for example and the supports of quartz, alumina, glucine or boron nitride for example.
- the sleeve can be made of copper or stainless steel.
- the propeller is brazed to the dielectric supports which are brazed to the sleeve.
- the propeller can then be made of copper as well as the sleeve, and the dielectric supports can be made of beryllium oxide for example.
- Three dielectric supports are generally used which are regularly distributed at 120 ° from one another.
- parasitic oscillations occur at frequencies where the phase shift of the transmitted microwave is close to between two consecutive turns of the helix .
- propellers called conical, wound on a conical mandrel and whose pitch increases in the same ratio as the diameter.
- the present invention makes it possible to solve the problem which consists in manufacturing a traveling wave tube with a conical helix, dielectric supports of constant height of current manufacture and an externally cylindrical sheath.
- the present invention relates to a traveling wave tube comprising a helical type delay line placed in a sheath, hollowed out of grooves, to which it is fixed by means of dielectric supports of constant height inserted in the grooves, characterized in that the helical type delay line is carried by a conical surface and in that the depth of the grooves increases with the diameter of the line.
- the sheath can be made by hammering around a core. The outer surface of the sheath is then rotated to make it cylindrical and able to receive a focusing device by alternating permanent magnets.
- traveling wave tubes with a delay line of the helical type, carried by a cylindrical surface, and with a sheath whose internal surface carries grooves, of constant depth, into which dielectric supports of constant height are inserted.
- tubes are known which differ from those described above because the propeller is fixed in the sheath not only by means of dielectric supports of constant height but also by metallic pieces of increasing height, the dielectric supports and the metallic parts being inserted in grooves of increasing depth.
- FIG. 1 we have limited ourselves to representing the parts of the traveling wave tube useful for the description of the invention.
- the electron gun of the tube, the collector and the device for focusing the electron beam have not been shown, which are well known in the prior art.
- Figure 1 is an exploded perspective view of an embodiment of the invention in which a propeller 1 is used carried by a conical surface, which is therefore generally produced by winding a wire on a conical mandrel.
- the taper of the propeller has been exaggerated for clarity.
- These grooves 4 are produced on the internal surface of a sheath 2 or sleeve, generally metallic and vacuum-tight, the external surface of which is cylindrical.
- FIG. 1 it can be seen that the internal surface of the sheath has cylindrical sectors 5 which connect the channels 4 of prismatic shape in which the dielectric supports 3 are inserted.
- Figure 2 is a perspective view showing the end of the sleeve 2, without the propeller and the dielectric supports, which encloses the portion of the conical propeller having the largest diameter.
- the internal section of the sheath can have another shape than that which is shown by way of example in FIGS. 1 and 2. This internal section must however be symmetrical in revolution about the axis of the tube if the grooves are excepted .
- the advantage of the internal section of the sheath which is shown in FIGS. 1 and 2 is that in the interval between the channels, the sheath has cylindrical sectors internally and externally 5 of constant thickness. These cylindrical sectors of constant thickness make it possible to easily join several lines in a conical helix.
- the invention therefore makes it possible to use, for supporting a conical propeller, dielectric rods of constant height and of standardized manufacture, and therefore inexpensive.
- FIGs 3, 4 and 5 are cross-sectional views where we see the propeller 1 - which can be carried by a cylindrical or conical surface - the dielectric supports 3 - in these figures three dielectric supports have been shown but their number may be different from three - the sheath 2, which is cylindrical on the outside and whose internal surface has grooves 4 in which the dielectric rods are inserted. In the interval between the channels, the sheath has cylindrical sectors 5, internally and externally, of constant thickness.
- FIGS 3, 4 and 5 show that one can use dielectric rods 3 having different sections.
- the dielectric rods 3 comprise two cylindrical sectors 6 and 7, which face each other and which are in contact with the propeller and with the grooves of the sheath.
- the dielectric rods 3 have a trapezoidal section.
- the dielectric rods 3 have a rectangular section.
- the sheath used in the invention can be manufactured by hammering.
- a core is produced having a shape corresponding to the internal surface of the sheath carrying grooves.
- a cylindrical tube, made of copper for example, is placed around this core. The shape of the core is hammered into the tube. The soul is extracted from the sheath thus produced.
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Abstract
La surface inteme du fourreau (2) comporte des gorges (4) dans lesquelles sont insérés des supports diélectriques (3) de hauteur (h) constante qui sont fixés à la ligne à retard en hélice (1). Il s'agit d'une ligne à retard en hélice portée par une surface conique et, la profondeur (p) des gorges augmente avec le diamètre de la ligne.The inner surface of the sheath (2) has grooves (4) into which are inserted dielectric supports (3) of constant height (h) which are fixed to the helical delay line (1). It is a helical delay line carried by a conical surface and, the depth (p) of the grooves increases with the diameter of the line.
Description
La présente invention concerne un tube à onde progressive comportant un fourreau creusé de gorges. Elle concerne aussi un procédé de fabrication du fourreau creusé de gorges.The present invention relates to a traveling wave tube comprising a sheath hollowed out of grooves. It also relates to a method of manufacturing the sheath dug from grooves.
L'invention concerne le domaine des tubes à onde progressive ayant une ligne à retard du type en hélice, c'est-à-dire par exemple une ligne à retard en hélice simple, du type "ring and bar", du type . "ring and loop"...The invention relates to the field of traveling wave tubes having a helical type delay line, that is to say for example a simple helical delay line, of the "ring and bar" type. "ring and loop" ...
Toutefois pour simplifier l'exposé, la ligne à retard sera dans toute la suite assimilée à une hélice simple.However, to simplify the presentation, the delay line will in the following be assimilated to a simple propeller.
La ligne à retard en hélice est placée dans un fourreau cylindrique, généralement métallique, auquel elle est fixée par l'intermédiaire de supports diélectriques.The helical delay line is placed in a cylindrical sheath, generally metallic, to which it is fixed by means of dielectric supports.
Pour les tubes à onde progressive fonctionnant à des niveaux de puissance relativement peu élevés, l'hélice et les supports sont assemblés par serrage dans le fourreau ou manchon. L'hélice est en tungstène par exemple et les supports en quartz, alumine, glucine ou nitrure de bore par exemple. Le manchon peut être en cuivre ou en acier inoxydable.For traveling wave tubes operating at relatively low power levels, the propeller and the supports are assembled by clamping in the sleeve or sleeve. The propeller is made of tungsten for example and the supports of quartz, alumina, glucine or boron nitride for example. The sleeve can be made of copper or stainless steel.
Pour les tubes à onde progressive fonctionnant à des puissances plus élevées, l'hélice est brasée aux supports diélectriques qui sont brasés au manchon. L'hélice peut alors être en cuivre ainsi que le manchon, et les supports diélectriques peuvent être en oxyde de béryllium par exemple.For traveling wave tubes operating at higher powers, the propeller is brazed to the dielectric supports which are brazed to the sleeve. The propeller can then be made of copper as well as the sleeve, and the dielectric supports can be made of beryllium oxide for example.
On utilise généralement trois supports diélectriques qui sont régulièrement répartis à 120° l'un de l'autre.Three dielectric supports are generally used which are regularly distributed at 120 ° from one another.
Dans les tubes à onde progressive, en particulier dans les tubes à large bande fonctionnant à haut niveau de puissance, des oscillations parasites se produisent à des fréquences où le déphasage de l'onde hyperfréquence transmise est proche de entre deux spires consécutives de l'hélice.In traveling wave tubes, in particular in broadband tubes operating at high power level, parasitic oscillations occur at frequencies where the phase shift of the transmitted microwave is close to between two consecutive turns of the helix .
Pour éviter ces oscillations, il est connu de faire varier la longueur des spires de l'hélice le long de l'axe du tube et corréla- tivement le pas de l'hélice afin de conserver les conditions de synchronisme dans la bande de fréquence de fonctionnement.To avoid these oscillations, it is known to vary the length of the turns of the propeller along the axis of the tube and correlatively the pitch of the propeller in order to preserve the synchronism conditions in the frequency band of operation.
On a donc réalisé des hélices, dites coniques, bobinées sur un mandrin conique et dont le pas augmente dans le même rapport que le diamètre.So we made propellers, called conical, wound on a conical mandrel and whose pitch increases in the same ratio as the diameter.
La réalisation pratique de ces hélices conique est difficile surtout, lorsque l'hélice, les supports diélectriques et le fourreau sont brasés.The practical realization of these conical propellers is difficult especially when the propeller, the dielectric supports and the sleeve are brazed.
Lorsque la focalisation du tube est réalisée par des aimants permanents alternés de façon périodique, ce qui est très fréquent, il est préférable de disposer d'un fourreau cylindrique extérieurement pour supporter les aimants annulaires et les masses polaires de fabrication courante. On peut utiliser alors un fourreau intérieurement et extérieurement cylindrique et des supports diélectriques ayant le profil adéquat, c'est-à-dire comportant une surface cylindrique en contact avec le fourreau et une surface conique en contact avec l'hélice. L'inconvénient de cette solution est que ces supports bien particuliers sont difficiles à réaliser et coûteux.When the focusing of the tube is carried out by permanent magnets alternating periodically, which is very frequent, it is preferable to have a cylindrical sheath externally to support the annular magnets and the polar masses of current manufacture. One can then use an internally and externally cylindrical sheath and dielectric supports having the adequate profile, that is to say comprising a cylindrical surface in contact with the sheath and a conical surface in contact with the propeller. The disadvantage of this solution is that these very specific supports are difficult to produce and expensive.
. Pour supprimer ces inconvénients, la Demanderesse a proposé dans le brevet français N° 76.28319, publié sous le n° 2.365.218, une hélice pseudo-cônique présentant des méplats parallèles à l'axe du tube et à distance constante de celui-ci. Cette solution permet l'utilisation d'un fourreau cylindrique et de supports diélectriques de hauteur constante.. To overcome these drawbacks, the Applicant has proposed in French Patent No. 76.28319, published under No. 2,365,218, a pseudo-conical propeller having flats parallel to the axis of the tube and at constant distance from it. This solution allows the use of a cylindrical sheath and dielectric supports of constant height.
L'inconvénient des hélices pseudo-coniques est que, lorsque la puissance hyperfréquence augmente, des oscillations parasites peuvent se produire, au voisinage du mode JC , vers la sortie haute fréquence du tube là où le champ haute fréquence est le plus élevé. Alors que, pour ces puissances, il n'y a pas d'oscillations si l'on utilise des hélices vraiment coniques. En effet, les hélices coniques présentent l'avantage d'allier à une variation de la longueur des spires le long de l'axe du tube, une diminution de l'impédance de couplage d'autant plus importante que la fréquence est haute. Ceci a pour effet de diminuer fortement le transfert d'énergie au voisinage du mode π et de ce fait de supprimer les oscillations. Il faut noter que les calculs et les expériences ont montré que, contrairement à ce qui était admis, l'impédance de couplage entre le champ hyperfréquence et le faisceau d'électrons n'a pas à être maximale tout le long du tube et que, en particulier, le rendement d'interaction peut se trouver amélioré avec une impédance de couplage décroissante vers la fin de la ligne, là où le champ HF est maximum.The disadvantage of pseudo-conical propellers is that, when the microwave power increases, parasitic oscillations can occur, in the vicinity of JC mode, towards the high frequency output of the tube where the high frequency field is the highest. Whereas, for these powers, there are no oscillations if we use really conical propellers. Indeed, conical propellers have the advantage of combining a variation in the length of the turns along the axis of the tube, a reduction in the impedance of coupling is all the more important as the frequency is high. This has the effect of greatly reducing the energy transfer in the vicinity of the π mode and therefore eliminating the oscillations. It should be noted that calculations and experiments have shown that, contrary to what was accepted, the coupling impedance between the microwave field and the electron beam does not have to be maximum all along the tube and that, in particular, the interaction efficiency can be improved with a decreasing coupling impedance towards the end of the line, where the HF field is maximum.
La présente invention permet de résoudre le problème qui consiste à fabriquer un tube à onde progressive avec une hélice conique, des supports diélectriques de hauteur constante de fabrication courante et un fourreau cylindrique extérieurement.The present invention makes it possible to solve the problem which consists in manufacturing a traveling wave tube with a conical helix, dielectric supports of constant height of current manufacture and an externally cylindrical sheath.
La présente invention concerne un tube à onde progressive comportant une ligne à retard du type en hélice placée dans un fourreau, creusé de gorges, auquel elle est fixée par l'intermédiaire de supports diélectriques de hauteur constante insérés dans les gorges, caractérisé en ce que la ligne à retard du type en hélice est portée par une surface conique et en ce que la profondeur des gorges augmente avec le diamètre de la ligne . Le fourreau peut être fabriqué par martelage autour d'une âme. On tourne ensuite la surface externe du fourreau pour le rendre cylindrique et apte à recevoir un dispositif de focalisation par aimants permanents alternés.The present invention relates to a traveling wave tube comprising a helical type delay line placed in a sheath, hollowed out of grooves, to which it is fixed by means of dielectric supports of constant height inserted in the grooves, characterized in that the helical type delay line is carried by a conical surface and in that the depth of the grooves increases with the diameter of the line. The sheath can be made by hammering around a core. The outer surface of the sheath is then rotated to make it cylindrical and able to receive a focusing device by alternating permanent magnets.
Par divers documents tels que le brevet anglais 984.607, le brevet américain 3.271.614..., on connait des tubes à onde progressive avec une ligne à retard du .type en hélice, portée par une surface cylindrique, et avec un fourreau dont la surface interne porte des gorges, de profondeur constante, dans lesquelles sont insérés des supports diélectriques de hauteur constante.By various documents such as the English patent 984,607, the American patent 3,271,614 ..., we know traveling wave tubes with a delay line of the helical type, carried by a cylindrical surface, and with a sheath whose internal surface carries grooves, of constant depth, into which dielectric supports of constant height are inserted.
Par le brevet américain 3.374.388, on connait des tubes se distinguant de ceux décrits précédemment car l'hélice est fixée dans le fourreau par l'intermédiaire non seulement de supports diélectriques de hauteur constante mais aussi de pièces métalliques de hauteur croissante, les supports diélectriques et les pièces métalliques étant insérés dans des gorges de profondeur croissante.By US Patent 3,374,388, tubes are known which differ from those described above because the propeller is fixed in the sheath not only by means of dielectric supports of constant height but also by metallic pieces of increasing height, the dielectric supports and the metallic parts being inserted in grooves of increasing depth.
On remarquera que dans tous ces documents, ils n'est pas question comme dans notre invention d'hélices coniques.It will be noted that in all these documents, there is no question as in our invention of conical propellers.
D'autres objets, caractéristiques et résultats de l'invention ressortiront de la description suivante, donnée à titre d'exemple non limitatif et illustrée par les figures annexées qui représentent :
- - les figures 1 et 2, des vues en perspective montrant le fourreau et ses gorges et la position de l'hélice et de ses supports dans le fourreau ;
- - les figures 3 à 5, des vues en coupe transversale montrant les supports insérés dans leur gorge et les différents types de supports qui peuvent être utilisés.
- - Figures 1 and 2, perspective views showing the sleeve and its grooves and the position of the propeller and its supports in the sleeve;
- - Figures 3 to 5, cross-sectional views showing the supports inserted in their groove and the different types of supports that can be used.
Sur les différentes figures, les mêmes repères désignent les mêmes éléments, mais, pour des raisons de clarté, les cotes et proportions des divers éléments ne sont pas respectées.In the different figures, the same references designate the same elements, but, for reasons of clarity, the dimensions and proportions of the various elements are not observed.
Sur la figure 1, on s'est borné à représenter les parties du tube à onde progressive utiles à la description de l'invention. Ainsi on n'a pas représenté, par exemple, le canon à électrons du tube, le collecteur et le dispositif de focalisation du faisceau d'électrons qui sont bien connus de l'art antérieur.In FIG. 1, we have limited ourselves to representing the parts of the traveling wave tube useful for the description of the invention. Thus, for example, the electron gun of the tube, the collector and the device for focusing the electron beam have not been shown, which are well known in the prior art.
La figure 1 est une vue en perspective éclatée d'un mode de réalisation de l'invention dans lequel on utilise une hélice 1 portée par une surface conique, qui est donc généralement réalisée par bobinage d'un fil sur un mandrin conique. Sur la figure 1, la conicité de l'hélice a été exagérée pour plus de clarté.Figure 1 is an exploded perspective view of an embodiment of the invention in which a propeller 1 is used carried by a conical surface, which is therefore generally produced by winding a wire on a conical mandrel. In Figure 1, the taper of the propeller has been exaggerated for clarity.
Trois baguettes ou supports 3, en matériau diélectrique de hauteur h constante, supportent l'hélice. On utilise généralement, trois baguettes disposées à 120° l'un de l'autre. Ces baguettes sont insérées dans des gorges 4 dont la profondeur p augmente en fonction du diamètre de l'hélice. Ces gorges 4 sont réalisées sur la surface interne d'un fourreau 2 ou manchon, généralement métallique et étanche au vide, dont la surface externe est cylindrique. Sur la figure 1, on voit que la surface interne du fourreau comporte des secteurs cylindriques 5 qui relient les canaux 4 de forme prismatique dans lesquels les supports diélectriques 3 sont insérés. La figure 2 est une vue en perspective montrant l'extrémité du fourreau 2, sans l'hélice et les supports diélectriques, qui renferme la partie de l'hélice conique ayant le plus grand diamétre.Three rods or supports 3, made of dielectric material of constant height h, support the propeller. We generally use three rods arranged at 120 ° from each other. These rods are inserted into grooves 4 whose depth p increases as a function of the diameter of the propeller. These grooves 4 are produced on the internal surface of a
La section interne du fourreau peut avoir une autre forme que celle qui est représentée à titre d'exemple sur les figures 1 et 2. Cette section interne doit cependant être symétrique de révolution autour de l'axe du tube si l'on excepte les gorges.The internal section of the sheath can have another shape than that which is shown by way of example in FIGS. 1 and 2. This internal section must however be symmetrical in revolution about the axis of the tube if the grooves are excepted .
L'intérêt de la section interne du fourreau qui est représentée sur les figures 1 et 2 est que dans l'intervalle entre les canaux, le fourreau comporte des secteurs cylindriques intérieurement et extérieurement 5 d'épaisseur constante. Ces secteurs cylindriques d'épaisseur constante permettent de réaliser facilement la jonction de plusieurs lignes en hélice conique.The advantage of the internal section of the sheath which is shown in FIGS. 1 and 2 is that in the interval between the channels, the sheath has cylindrical sectors internally and externally 5 of constant thickness. These cylindrical sectors of constant thickness make it possible to easily join several lines in a conical helix.
L'invention permet donc d'utiliser pour supporter une hélice conique des baguettes diélectriques de hauteur constante et de fabrication standardisée, et donc peu coûteuses.The invention therefore makes it possible to use, for supporting a conical propeller, dielectric rods of constant height and of standardized manufacture, and therefore inexpensive.
Les figures 3, 4 et 5 sont des vues en coupe transversale où l'on voit l'hélice 1 - qui peut être portée par une surface cylindrique ou conique - les supports diélectriques 3 - sur ces figures on a représenté trois supports diélectriques mais leur nombre peut être différent de trois - le fourreau 2, qui est cylindrique extérieurement et dont la surface interne comporte des gorges 4 dans lesquelles sont insérées les baguettes diélectriques. Dans l'intervalle entre les canaux le fourreau comporte des secteurs cylindriques 5, intérieurement et extérieurement, d'épaisseur constante.Figures 3, 4 and 5 are cross-sectional views where we see the propeller 1 - which can be carried by a cylindrical or conical surface - the dielectric supports 3 - in these figures three dielectric supports have been shown but their number may be different from three - the
les figures 3, 4 et 5 montrent que l'on peut utiliser des baguettes diélectriques 3 présentant des sections différentes.Figures 3, 4 and 5 show that one can use dielectric rods 3 having different sections.
Sur la figure 3, les baguettes diélectriques 3 comportent deux secteurs cylindriques 6 et 7, qui se font face et qui sont en contact avec l'hélice et avec les gorges du fourreau. Sur la figure 4, les baguettes diélectriques 3 ont une section trapézoïdale. Sur la figure 5, les baguettes diélectriques 3 ont une section rectangulaire.In FIG. 3, the dielectric rods 3 comprise two cylindrical sectors 6 and 7, which face each other and which are in contact with the propeller and with the grooves of the sheath. In FIG. 4, the dielectric rods 3 have a trapezoidal section. In FIG. 5, the dielectric rods 3 have a rectangular section.
On peut fabriquer le fourreau utilisé dans l'invention par martelage. On réalise un âme ayant une forme correspondant à la surface interne du fourreau portant des gorges. On dispose autour de cette âme un tube cylindrique, en cuivre par exemple. On donne par martelage au tube la forme de l'âme. On extrait l'âme du fourreau ainsi fabriqué.The sheath used in the invention can be manufactured by hammering. A core is produced having a shape corresponding to the internal surface of the sheath carrying grooves. A cylindrical tube, made of copper for example, is placed around this core. The shape of the core is hammered into the tube. The soul is extracted from the sheath thus produced.
On peut utiliser d'autres méthodes de fabrication comme le brochage, le formage par explosion... ainsi que d'autres matériaux, comme l'acier inoxydable, le titane...We can use other manufacturing methods such as broaching, explosion forming ... as well as other materials, such as stainless steel, titanium ...
Si l'on veut utiliser un dispositif de focalisation par aimants permanents alternés, on rend la surface externe du fourreau cylindrique au tour.If we want to use a focusing device with alternating permanent magnets, we make the outer surface of the barrel cylindrical in turn.
Lorsque la focalisation est réalisée par solénoïde, cette dernière étape n'est pas indispensable.When focusing is performed by solenoid, this last step is not essential.
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8305362 | 1983-03-31 | ||
| FR8305362A FR2543734B1 (en) | 1983-03-31 | 1983-03-31 | PROGRESSIVE WAVE TUBE HAVING A HOLLOW GROOVE SLEEVE AND MANUFACTURING METHOD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0121465A1 true EP0121465A1 (en) | 1984-10-10 |
Family
ID=9287451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84400564A Ceased EP0121465A1 (en) | 1983-03-31 | 1984-03-20 | Grooved travelling-wave tube sleeve and its manufacturing process |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4572985A (en) |
| EP (1) | EP0121465A1 (en) |
| JP (1) | JPS59190702A (en) |
| FR (1) | FR2543734B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0347624A1 (en) * | 1988-06-21 | 1989-12-27 | Thomson Tubes Electroniques | Method of fabricating a travelling-wave tube delay line |
| EP0412001A1 (en) * | 1989-08-01 | 1991-02-06 | Thomson Tubes Electroniques | Microwave tube comprising at least one axial part inserted at low temperature in a coaxial shell |
| GB2252446A (en) * | 1988-03-24 | 1992-08-05 | Hughes Aircraft Co | Traveling-wave tube slow-wave structure with integral conductively-loaded barrel and method of making same |
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| DE3540998C2 (en) * | 1985-11-19 | 1993-12-02 | Licentia Gmbh | Running tube and process for its manufacture |
| FR2623327A1 (en) * | 1987-11-12 | 1989-05-19 | Itt Composants Instr | MINIATURIZED THERMAL CIRCUIT BREAKER FOR PRINTED CIRCUIT BOARD |
| FR2787918B1 (en) | 1998-12-23 | 2001-03-16 | Thomson Tubes Electroniques | MULTIBAND PROGRESSIVE WAVE TUBE OF REDUCED LENGTH CAPABLE OF OPERATING AT HIGH POWER |
| US6453301B1 (en) * | 2000-02-23 | 2002-09-17 | Sony Corporation | Method of using personal device with internal biometric in conducting transactions over a network |
| US6356023B1 (en) * | 2000-07-07 | 2002-03-12 | Ampwave Tech, Llc | Traveling wave tube amplifier with reduced sever |
| US6356022B1 (en) * | 2000-07-07 | 2002-03-12 | Ampwave Tech, Llc | Tapered traveling wave tube |
| US9000670B2 (en) * | 2012-03-09 | 2015-04-07 | L-3 Communications Corporation | Harmonic mode magnetron |
| CN109192639A (en) * | 2018-08-10 | 2019-01-11 | 安徽华东光电技术研究所有限公司 | For travelling tube helical line slow-wave structure |
| CN110335797A (en) * | 2019-07-08 | 2019-10-15 | 电子科技大学 | A kind of helical line for travelling wave tube slow-wave structure |
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| US3508108A (en) * | 1967-01-16 | 1970-04-21 | Varian Associates | Comb-shaped ceramic supports for helix derived slow wave circuits |
| FR2422265A2 (en) * | 1976-09-21 | 1979-11-02 | Thomson Csf | Wave propagation tube with hyperfrequency delay line - having triangular section with three equally inclined flat plates and is supported in tube by bars |
| FR2454694A1 (en) * | 1979-04-20 | 1980-11-14 | Thomson Csf | PROGRESSIVE WAVE TUBE HAVING VARIABLE GEOMETRY DELAY LINE SUPPORTS |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2869217A (en) * | 1957-02-14 | 1959-01-20 | Sylvania Electric Prod | Method for assembling travelling wave tubes |
-
1983
- 1983-03-31 FR FR8305362A patent/FR2543734B1/en not_active Expired
-
1984
- 1984-03-20 EP EP84400564A patent/EP0121465A1/en not_active Ceased
- 1984-03-28 US US06/594,230 patent/US4572985A/en not_active Expired - Lifetime
- 1984-03-30 JP JP59063127A patent/JPS59190702A/en active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR969886A (en) * | 1948-07-23 | 1950-12-27 | Csf | Progressing wave tubes improvements |
| US3271614A (en) * | 1961-08-18 | 1966-09-06 | Westinghouse Electric Corp | Electron discharge device envelope structure providing a radial force upon support rods |
| GB984607A (en) * | 1962-07-19 | 1965-02-24 | Ferranti Ltd | Improvements relating to travelling-wave tubes |
| US3374388A (en) * | 1964-11-13 | 1968-03-19 | Navy Usa | Traveling wave tube having tapered grooves and shims for improved thermal contact between metal envelope, support rods and slow wave helix |
| US3508108A (en) * | 1967-01-16 | 1970-04-21 | Varian Associates | Comb-shaped ceramic supports for helix derived slow wave circuits |
| FR2422265A2 (en) * | 1976-09-21 | 1979-11-02 | Thomson Csf | Wave propagation tube with hyperfrequency delay line - having triangular section with three equally inclined flat plates and is supported in tube by bars |
| FR2454694A1 (en) * | 1979-04-20 | 1980-11-14 | Thomson Csf | PROGRESSIVE WAVE TUBE HAVING VARIABLE GEOMETRY DELAY LINE SUPPORTS |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2252446A (en) * | 1988-03-24 | 1992-08-05 | Hughes Aircraft Co | Traveling-wave tube slow-wave structure with integral conductively-loaded barrel and method of making same |
| GB2252446B (en) * | 1988-03-24 | 1992-11-04 | Hughes Aircraft Co | Slow-wave structure with integral conductively-loaded barrel and method of making same |
| EP0347624A1 (en) * | 1988-06-21 | 1989-12-27 | Thomson Tubes Electroniques | Method of fabricating a travelling-wave tube delay line |
| EP0412001A1 (en) * | 1989-08-01 | 1991-02-06 | Thomson Tubes Electroniques | Microwave tube comprising at least one axial part inserted at low temperature in a coaxial shell |
| FR2650702A1 (en) * | 1989-08-01 | 1991-02-08 | Thomson Tubes Electroniques | HYPERFREQUENCY TUBE PROVIDED WITH AT LEAST ONE AXIED AXLE ENGINEERED COLD IN A COAXIAL ENVELOPE |
| US5083060A (en) * | 1989-08-01 | 1992-01-21 | Thomson Tubes Electroniques | Microwave tube provided with at least one axial part, fitted cold into a coaxial envelope |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2543734B1 (en) | 1985-12-06 |
| US4572985A (en) | 1986-02-25 |
| FR2543734A1 (en) | 1984-10-05 |
| JPH0453121B2 (en) | 1992-08-25 |
| JPS59190702A (en) | 1984-10-29 |
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Inventor name: KUNTZMANN, JEAN-CLAUDE Inventor name: NAZET, RENE Inventor name: TARREAU, LOUIS |