EP0347624A1 - Procédé de fabrication d'une ligne à retard pour tube à onde progressive - Google Patents

Procédé de fabrication d'une ligne à retard pour tube à onde progressive Download PDF

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Publication number
EP0347624A1
EP0347624A1 EP89109841A EP89109841A EP0347624A1 EP 0347624 A1 EP0347624 A1 EP 0347624A1 EP 89109841 A EP89109841 A EP 89109841A EP 89109841 A EP89109841 A EP 89109841A EP 0347624 A1 EP0347624 A1 EP 0347624A1
Authority
EP
European Patent Office
Prior art keywords
electrically conductive
spacers
cylinder
pole pieces
soldered
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89109841A
Other languages
German (de)
English (en)
Other versions
EP0347624B1 (fr
Inventor
Manfred Dr. Kobale
Peter Mammach
Eckart Dipl.-Phys. Schmid
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 Electron Devices SA
Original Assignee
Siemens AG
Thomson Tubes Electroniques
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 Siemens AG, Thomson Tubes Electroniques filed Critical Siemens AG
Publication of EP0347624A1 publication Critical patent/EP0347624A1/fr
Application granted granted Critical
Publication of EP0347624B1 publication Critical patent/EP0347624B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H01J23/165—Manufacturing processes or apparatus therefore
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49016—Antenna or wave energy "plumbing" making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor

Definitions

  • the present invention relates to a delay line for a broadband traveling wave tube according to the preamble of claim 1.
  • a traveling wave tube is described, for example, in an article by J.L. Putz and N.J. Cascone described, p. IEDM 1979, p.422-424.
  • the object on which the present invention is based is to provide a structure which can be produced with sufficient precision and reproducibly. This object is achieved by the characterizing feature of patent claim 1.
  • Load webs connected in one piece to the inner wall of the electrically conductive cylinder are optimally fixed in their mutual position and avoid the tolerance fluctuations that are unavoidable with each soldering process and with each part being glued.
  • An inclination of the axis of the cylinder with respect to the axis of symmetry of the pole shoes which is unavoidable, for example, when soldering or gluing into the spacers and pole shoes, acts to the same extent on the delay line and the load bars.
  • the mutual position of these parts is not changed. Focusing magnets are later inserted between the pole pieces. As a result, the mutual position of the parts mentioned is no longer influenced.
  • a vacuum-tight design is achieved in a simple manner by the spacers and magnetizable pole pieces lying between them being soldered to one another and having coaxial bores, by these bores being exactly matched to the outer diameter of the electrically conductive cylinder and by the metal cylinder being inserted into these bores and with the Spacers that are used to center the focusing magnets and the pole pieces are soldered.
  • Three holding rods are advantageously provided, one of the holding rods being supported by a spring against the inner wall of the electrically conductive cylinder.
  • One of the substances BW, BeO, Al2O3 is particularly suitable as the material for the holding rods.
  • the good thermal conductivity of the holding rods, which can also consist of diamond material for very high loads, can be used particularly advantageously here.
  • the manufacturing method according to the invention also ensures a high reproducibility, since the influence of the soldering processes is completely eliminated, since the final shape is only generated after the soldering.
  • the helix can also be held by the known methods, such as shrinking or soldering.
  • FIGS. 1 and 2 show an example of a delay line according to the invention in a sectional view, the diameter dimensions having been greatly changed for clarification compared to a scale drawing.
  • FIG. 3 shows a further example of a delay line according to the invention in a sectional view.
  • a tubular body 11 is composed of annular, non-magnetic spacers 1 and pole shoes 2 made of magnetizable material.
  • the pole pieces 2 protrude the spacers 1 in the radial direction, so that focusing magnets can be inserted between two adjacent pole pieces in a simple manner.
  • the composition of such a tubular body 11 is advantageously carried out by threading the spacers 1 and the pole pieces 2 onto a tube and then soldering the individual rings.
  • the inside diameter of this tubular body 11 is adapted to the outside diameter of a cylinder 5.
  • the cylinder 5 is fixed in the tubular body 11, for example by soldering.
  • Load bars 4 are connected in one piece to the cylinder 5.
  • the load webs 4 leave clear to the coaxially arranged coil 9 exactly defined width 12 column.
  • the helix 9 is supported and fixed by holding rods 6 and 8 with respect to the inner wall of the cylinder 5.
  • the rods 6 lie directly on the cylinder 5, while the rod 8 is somewhat shorter and is held under pressure by a tension spring 7. This pressure results in excellent heat transfer between the helix 9 and the holding rods 6 and 8 and between the holding rods 6 and the cylinder 5 or the holding rod 8 and the tension spring 7.
  • there is a maximum of precision for the position of the helix 9 because the support rods are ground very precisely to size.
  • three or more holding rods 6 can also be used, in which case it is advisable to solder these holding rods 6 into the cylinder 5.
  • a method is advantageous in which the tubular body 11 is first produced from the spacers 1 and the pole pieces 2 and its inner wall is brought to the required level by honing, in which a thick-walled tube 3 is then inserted into the tubular body 11 and fixed there, in particular is soldered and in which, after fixing the tube 3, the desired profile is produced by a wire erosion process, that is to say by a spark erosion process in which a wire is pulled through the tube and at the same time moved in a plane perpendicular to the tube axis, so that the desired contours are cut out of the wall of the tube.
  • a wire erosion process that is to say by a spark erosion process in which a wire is pulled through the tube and at the same time moved in a plane perpendicular to the tube axis, so that the desired contours are cut out of the wall of the tube.
  • the spacers 1 and the pole pieces 2 are threaded onto a thick-walled, non-magnetic tube 3 and soldered to it and to one another in one operation. Then the load webs 4 of the cylinder 5 are worked out by wire erosion from the thick-walled tube 3, the holding rods 6 and possibly the holding rods 8 and the tension spring 7 are inserted.
  • This implementation of the method is relatively inexpensive and in many cases sufficiently precise deliver.
  • the focusing magnets required in the traveling wave tube can be inserted between the pole pieces, adjusted to the optimal magnetic field distribution in cylinder 5 and glued and soldered to the pole pieces. This also means that there is no disruptive influence on the geometry of the delay line.
  • the structure according to the invention also enables the use of complicated forms of the load bars, such as the load bars 10 in FIG. 3, for example. These web shapes can also be produced with high precision and reproducibility if, according to the invention, the tube 3 is previously inserted into the stable tube body 11 and fixed there.
  • the specified structures can be produced, for example, in a tube 3 with an outer diameter of less than 2 mm.
  • holding rods 6 of equal width can also be fixed in the cylinder 5 in the radial direction by the shrinking technique known per se.
  • the shrinking technique known per se.
  • a temperature difference is generated in which the tubular body 11 and the cylinder 5 are warmer than the helix 9 and the holding rods 6.
  • the temperature adjusts and the helix is under pressure set and held so. This hal There are no deviations in position that would be feared with soldering.
  • the combination of the shrinking technique with additional soldering is useful, provided that the mechanical fixation takes place through the shrinking process and the solder only supports the heat transfer.
  • a material for the cylinder for example, copper or a metal with a high specific electrical resistance is suitable as a material for the retaining webs with relatively low requirements ceramic, with higher requirements for heat dissipation, diamond material is recommended, since this has a significantly higher thermal conductivity than the rest suitable materials.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microwave Tubes (AREA)
EP89109841A 1988-06-21 1989-05-31 Procédé de fabrication d'une ligne à retard pour tube à onde progressive Expired - Lifetime EP0347624B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3820919 1988-06-21
DE3820919 1988-06-21

Publications (2)

Publication Number Publication Date
EP0347624A1 true EP0347624A1 (fr) 1989-12-27
EP0347624B1 EP0347624B1 (fr) 1995-02-15

Family

ID=6356918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109841A Expired - Lifetime EP0347624B1 (fr) 1988-06-21 1989-05-31 Procédé de fabrication d'une ligne à retard pour tube à onde progressive

Country Status (4)

Country Link
US (1) US5079830A (fr)
EP (1) EP0347624B1 (fr)
DE (1) DE58908993D1 (fr)
HK (1) HK34597A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0401065A1 (fr) * 1989-05-30 1990-12-05 Thomson Tubes Electroniques Mode de construction d'une ligne à retard à hélice
FR2691286A1 (fr) * 1992-05-13 1993-11-19 Litton Systems Inc Tube d'amplification haute fréquence à pièces polaires d'un seul tenant pour des ondes millimétriques et son procédé de fabrication.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5341066A (en) * 1992-09-02 1994-08-23 Itt Corporation Anisotropically loaded helix assembly for a traveling-wave tube

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1391842A (fr) * 1962-11-21 1965-03-12 Lignes Telegraph Telephon Perfectionnements aux structures anodiques et magnétrons
US3397339A (en) * 1965-04-30 1968-08-13 Varian Associates Band edge oscillation suppression techniques for high frequency electron discharge devices incorporating slow wave circuits
WO1980000049A1 (fr) * 1978-06-08 1980-01-10 English Electric Valve Co Ltd Tube guide d'ondes
DE3217077A1 (de) * 1982-05-06 1983-11-10 Siemens AG, 1000 Berlin und 8000 München Lauffeldroehre mit periodisch-permanentmagnetischem fokussiersystem
EP0121465A1 (fr) * 1983-03-31 1984-10-10 Thomson-Csf Tube à onde progressive comportant un fourreau creusé de gorges et procédé de fabrication
FR2545645A1 (fr) * 1983-05-03 1984-11-09 Thomson Csf Procede de fabrication d'un troncon de fourreau dit a pieces polaires incorporees pour tubes hyperfrequences

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL260900A (fr) * 1960-04-11
US3142777A (en) * 1963-07-15 1964-07-28 Varian Associates Traveling wave tubes having helix derived slow-wave circuits with tapered support stubs and loading means
DE1491530B2 (de) * 1964-07-23 1971-11-04 Lauffeldroehre
US3387168A (en) * 1964-12-11 1968-06-04 Varian Associates Fin-supported helical slow wave circuit providing mode separation and suppression for traveling wave tubes
DE2516428C2 (de) * 1975-04-15 1977-03-24 Siemens Ag Wanderfeldroehre mit einer wendelartigen verzoegerungsleitung
DE3216254C2 (de) * 1982-04-30 1984-10-04 Siemens AG, 1000 Berlin und 8000 München Verfahren zur Herstellung eines rohrförmigen Bauteils zur Erzeugung eines räumlich alternierenden Magnetfeldes innerhalb eines Magnetsystems für die Führung des Elektronenstrahls von Wanderfeldröhren
GB2128110B (en) * 1982-10-06 1986-01-29 English Electric Valve Co Ltd Improvements in or relating to coupled cavity travelling wave tubes
JPH0231603Y2 (fr) * 1986-02-12 1990-08-27
US4947467A (en) * 1988-03-24 1990-08-07 Manoly Arthur E Traveling-wave tube slow-wave structure with integral conductively-loaded barrel and method of making same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1391842A (fr) * 1962-11-21 1965-03-12 Lignes Telegraph Telephon Perfectionnements aux structures anodiques et magnétrons
US3397339A (en) * 1965-04-30 1968-08-13 Varian Associates Band edge oscillation suppression techniques for high frequency electron discharge devices incorporating slow wave circuits
WO1980000049A1 (fr) * 1978-06-08 1980-01-10 English Electric Valve Co Ltd Tube guide d'ondes
DE3217077A1 (de) * 1982-05-06 1983-11-10 Siemens AG, 1000 Berlin und 8000 München Lauffeldroehre mit periodisch-permanentmagnetischem fokussiersystem
EP0121465A1 (fr) * 1983-03-31 1984-10-10 Thomson-Csf Tube à onde progressive comportant un fourreau creusé de gorges et procédé de fabrication
FR2545645A1 (fr) * 1983-05-03 1984-11-09 Thomson Csf Procede de fabrication d'un troncon de fourreau dit a pieces polaires incorporees pour tubes hyperfrequences

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0401065A1 (fr) * 1989-05-30 1990-12-05 Thomson Tubes Electroniques Mode de construction d'une ligne à retard à hélice
FR2691286A1 (fr) * 1992-05-13 1993-11-19 Litton Systems Inc Tube d'amplification haute fréquence à pièces polaires d'un seul tenant pour des ondes millimétriques et son procédé de fabrication.

Also Published As

Publication number Publication date
US5079830A (en) 1992-01-14
HK34597A (en) 1997-03-27
DE58908993D1 (de) 1995-03-23
EP0347624B1 (fr) 1995-02-15

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