EP0121465A1 - Tube à onde progressive comportant un fourreau creusé de gorges et procédé de fabrication - Google Patents

Tube à onde progressive comportant un fourreau creusé de gorges et procédé de fabrication Download PDF

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Publication number
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
Authority
EP
European Patent Office
Prior art keywords
sheath
cylindrical
grooves
tube
supports
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.)
Ceased
Application number
EP84400564A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jean-Claude Kuntzmann
René Nazet
Louis Tarreau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0121465A1 publication Critical patent/EP0121465A1/fr
Ceased legal-status Critical Current

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Classifications

    • 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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  • Microwave Tubes (AREA)
EP84400564A 1983-03-31 1984-03-20 Tube à onde progressive comportant un fourreau creusé de gorges et procédé de fabrication Ceased EP0121465A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8305362 1983-03-31
FR8305362A FR2543734B1 (fr) 1983-03-31 1983-03-31 Tube a onde progressive comportant un fourreau creuse de gorges et procede de fabrication

Publications (1)

Publication Number Publication Date
EP0121465A1 true EP0121465A1 (fr) 1984-10-10

Family

ID=9287451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84400564A Ceased EP0121465A1 (fr) 1983-03-31 1984-03-20 Tube à onde progressive comportant un fourreau creusé de gorges et procédé de fabrication

Country Status (4)

Country Link
US (1) US4572985A (enrdf_load_stackoverflow)
EP (1) EP0121465A1 (enrdf_load_stackoverflow)
JP (1) JPS59190702A (enrdf_load_stackoverflow)
FR (1) FR2543734B1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0347624A1 (de) * 1988-06-21 1989-12-27 Thomson Tubes Electroniques Herstellungsverfahren für eine Verzögerungsleitung für eine Wanderfeldröhre
EP0412001A1 (fr) * 1989-08-01 1991-02-06 Thomson Tubes Electroniques Tube hyperfréquence muni au moins d'une pièce axiale emmanchée à froid dans une enveloppe coaxiale
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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540998C2 (de) * 1985-11-19 1993-12-02 Licentia Gmbh Lauffeldröhre und Verfahren zu ihrer Herstellung
FR2623327A1 (fr) * 1987-11-12 1989-05-19 Itt Composants Instr Disjoncteur thermique miniaturise pour plaque a circuits imprimes
FR2787918B1 (fr) 1998-12-23 2001-03-16 Thomson Tubes Electroniques Tube a ondes progressives multibande de longueur reduite capable de fonctionner a puissance elevee
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 (zh) * 2018-08-10 2019-01-11 安徽华东光电技术研究所有限公司 用于行波管螺旋线慢波结构
CN110335797A (zh) * 2019-07-08 2019-10-15 电子科技大学 一种行波管用螺旋线慢波结构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR969886A (fr) * 1948-07-23 1950-12-27 Csf Perfectionnements aux tubes à onde progressante
GB984607A (en) * 1962-07-19 1965-02-24 Ferranti Ltd Improvements relating to travelling-wave tubes
US3271614A (en) * 1961-08-18 1966-09-06 Westinghouse Electric Corp Electron discharge device envelope structure providing a radial force upon support rods
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 (fr) * 1976-09-21 1979-11-02 Thomson Csf Ligne a retard hyperfrequence et tube a propagation d'ondes comportant une telle ligne
FR2454694A1 (fr) * 1979-04-20 1980-11-14 Thomson Csf Tube a ondes progressives comportant des supports de ligne a retard a geometrie variable

Family Cites Families (1)

* Cited by examiner, † Cited by third party
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR969886A (fr) * 1948-07-23 1950-12-27 Csf Perfectionnements aux tubes à onde progressante
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 (fr) * 1976-09-21 1979-11-02 Thomson Csf Ligne a retard hyperfrequence et tube a propagation d'ondes comportant une telle ligne
FR2454694A1 (fr) * 1979-04-20 1980-11-14 Thomson Csf Tube a ondes progressives comportant des supports de ligne a retard a geometrie variable

Cited By (6)

* Cited by examiner, † Cited by third party
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 (de) * 1988-06-21 1989-12-27 Thomson Tubes Electroniques Herstellungsverfahren für eine Verzögerungsleitung für eine Wanderfeldröhre
EP0412001A1 (fr) * 1989-08-01 1991-02-06 Thomson Tubes Electroniques Tube hyperfréquence muni au moins d'une pièce axiale emmanchée à froid dans une enveloppe coaxiale
FR2650702A1 (fr) * 1989-08-01 1991-02-08 Thomson Tubes Electroniques Tube hyperfrequence muni au moins d'une piece axiale emmanchee a froid dans une enveloppe coaxiale
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 (fr) 1985-12-06
FR2543734A1 (fr) 1984-10-05
US4572985A (en) 1986-02-25
JPH0453121B2 (enrdf_load_stackoverflow) 1992-08-25
JPS59190702A (ja) 1984-10-29

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): DE GB NL

17P Request for examination filed

Effective date: 19850131

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18R Application refused

Effective date: 19870502

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KUNTZMANN, JEAN-CLAUDE

Inventor name: NAZET, RENE

Inventor name: TARREAU, LOUIS