EP0156004B1 - Tube à propagation d'ondes et son procédé de fabrication - Google Patents

Tube à propagation d'ondes et son procédé de fabrication Download PDF

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Publication number
EP0156004B1
EP0156004B1 EP84114709A EP84114709A EP0156004B1 EP 0156004 B1 EP0156004 B1 EP 0156004B1 EP 84114709 A EP84114709 A EP 84114709A EP 84114709 A EP84114709 A EP 84114709A EP 0156004 B1 EP0156004 B1 EP 0156004B1
Authority
EP
European Patent Office
Prior art keywords
delay line
wave tube
travelling
outer sheath
tube according
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.)
Expired
Application number
EP84114709A
Other languages
German (de)
English (en)
Other versions
EP0156004A1 (fr
Inventor
Hinrich Dr. Rer. Nat. Dipl.-Phys Heynisch
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.)
Siemens AG
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Publication of EP0156004A1 publication Critical patent/EP0156004A1/fr
Application granted granted Critical
Publication of EP0156004B1 publication Critical patent/EP0156004B1/fr
Expired 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 invention relates to a traveling wave tube according to the preamble of claim 1.
  • traveling wave tubes according to the preamble of claim 1 with a helical delay line are known for example from US-A-3 670 196.
  • the metal layer arranged on the outer surface serves to solder the delay line to the vacuum envelope.
  • the invention has for its object to provide a traveling wave tube of high power, the delay line is characterized by a large bandwidth and an increased RF field strength within the metal layer on the inner surface of the delay line.
  • the invention has the essential advantage that, by creating a (spiral) double-layer delay line, the inner layer of the delay line is shielded from its outer jacket in such a way that the RF field strength in the interior maintains relatively high values which cannot be reduced by the effect of the metallic outer wall.
  • a high wake-up efficiency is achieved between the electron beam and the electromagnetic wave with the best possible radial heat dissipation.
  • the technology used is relatively easy and inexpensive to control.
  • the figure shows the delay line of the traveling wave tube according to the invention schematically, partly in section and broken.
  • the 1 shows a delay line 1, which is arranged within a solid metallic vacuum envelope 4.
  • the vacuum envelope 4 is preferably made of copper.
  • the delay line 1 has the shape of a spiral.
  • the core 2 of the helix consists of insulator material, preferably of aluminum oxide ceramic.
  • the core 2 is covered on the outer and inner lateral surfaces with a metal layer 3, 3 ', which preferably consists of copper.
  • the inner metal layer 3 takes over the function as a delay line and the outer metal layer 3 ′ serves as a shield against the vacuum envelope 4. This increases an HF field within the inner metal layer 3, i. H. achieved at the location of the electron beam.
  • insulating layers 5 are provided, which preferably consist of aluminum oxide ceramic and ensure radial heat dissipation.
  • the HF coupling or decoupling takes place e.g. B. via a coaxial waveguide 7, the inner conductor 8 is attached to the outside of the coil in this embodiment and forms a galvanic connection to the inner metal layer 3.
  • the inner conductor 8 can also be contacted only with the inner metal layer 3.

Landscapes

  • Microwave Tubes (AREA)

Claims (6)

1. Tube à ondes progressives comportant une ligne à retard réalisée sous la forme d'une ligne hélicoïdale ou d'une ligne à anneaux et barreaux et disposée à l'intérieur d'une enceinte à vide en métal massif entre un système de production d'un faisceau d'électrons et un dispositif de captage du faisceau d'électrons, et dans lequel la ligne à retard est constituée par un noyau formé d'un matériau isolant possédant une surface enveloppe intérieure et une surface enveloppe extérieure et de couches métalliques qui sont déposées sur la surface enveloppe intérieure et sur la surface enveloppe extérieure du noyau, et dans lequel la couche métallique déposée sur la surface enveloppe extérieure établit un bon contact thermoconducteur avec l'enceinte à vide, caractérisé par le fait qu'un corps isolant (5) est disposé entre la surface enveloppe extérieure, qui entoure la couche métallique (3) de la ligne à retard (1) et l'enceinte à vide (4).
2. Tubé à ondes progressives selon la revendication 1, caractérisé par le fait qu'au moins une autre couche métallique isolée vis-à- vis des couches métalliques (3) est disposée entre l'enceinte à vide et la ligne à retard, dans la couche isolante, en formant de ce fait un système à plusieurs couches.
3. Tube à ondes progressives suivant la revendication 1 ou 2, caractérisé par le fait que le noyau (2) est constitué par une céramique à oxyde d'aluminium.
4. Tube à ondes progressives suivant l'une des revendications 1 à 3, caractérisé par le fait que ces couches métalliques (3) sont réalisées en cuivre.
5. Tube à ondes progressives suivant la revendication 1, caractérisé par le fait que le corps isolant (5) est constitué par une céramique à oxyde d'aluminium.
6. Procédé pour fabriquer un tube à ondes progressives suivant l'une des revendications 1 à 5, caractérisé par le fait que pour former le noyau (2) de la ligne à retard (1), on recouvre un tube en matériau isolant, au niveau de sa surface enveloppe intérieure et de sa surface enveloppe extérieure par une couche métallique (3), qu'on réalise les contours de la ligne à retard (1) en mettant en oeuvre une technologie de fraisage ou de meulage et qu'on enveloppe ensuite la ligne à retard (1) au moyen d'un corps isolant (5) et qu'on la fixe par soudage dans l'enceinte métallique à vide (4).
EP84114709A 1984-02-28 1984-12-04 Tube à propagation d'ondes et son procédé de fabrication Expired EP0156004B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3407206 1984-02-28
DE19843407206 DE3407206A1 (de) 1984-02-28 1984-02-28 Wanderfeldroehre und verfahren zu deren herstellung

Publications (2)

Publication Number Publication Date
EP0156004A1 EP0156004A1 (fr) 1985-10-02
EP0156004B1 true EP0156004B1 (fr) 1989-03-08

Family

ID=6229051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114709A Expired EP0156004B1 (fr) 1984-02-28 1984-12-04 Tube à propagation d'ondes et son procédé de fabrication

Country Status (3)

Country Link
US (1) US4647816A (fr)
EP (1) EP0156004B1 (fr)
DE (2) DE3407206A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765056A (en) * 1986-04-03 1988-08-23 Raytheon Company Method of manufacture of helical waveguide structure for traveling wave tubes
US5173669A (en) * 1990-09-04 1992-12-22 Hughes Aircraft Company Slow-wave structure having block supported helix structure
US5231330A (en) * 1991-10-25 1993-07-27 Itt Corporation Digital helix for a traveling-wave tube and process for fabrication
US6584675B1 (en) * 2000-06-09 2003-07-01 Sunder S. Rajan Method for fabricating three dimensional traveling wave tube circuit elements using laser lithography

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519964A (en) * 1968-07-26 1970-07-07 Microwave Ass High power slow wave circuit
DE1937704B2 (de) * 1969-07-24 1972-04-13 Siemens AG, 1000 Berlin u. 8000 München Wanderfeldroehre mit einer wendelfoermigen verzoegerungsleitung
US3691630A (en) * 1969-12-10 1972-09-19 James E Burgess Method for supporting a slow wave circuit via an array of dielectric posts
US3670196A (en) * 1971-02-24 1972-06-13 Raytheon Co Helix delay line for traveling wave devices
US4115721A (en) * 1977-01-07 1978-09-19 Louis E. Hay Traveling wave device with unific composite metal dielectric helix and method for forming
US4158791A (en) * 1977-02-10 1979-06-19 Varian Associates, Inc. Helix traveling wave tubes with resonant loss
IT1090547B (it) * 1977-10-28 1985-06-26 Elettronica Spa Tubi ad onda progressiva ad elica con schermaggio ausiliario selettivo mediante elementi conduttori applicati su supporti dielettrici
US4185225A (en) * 1978-03-24 1980-01-22 Northrop Corporation Traveling wave tube
FR2420842A1 (fr) * 1978-03-24 1979-10-19 Thomson Csf Ligne a retard, pour tube hyperfrequences, refroidie par circulation de fluide et tube hyperfrequences comportant une telle ligne
DE2838515C3 (de) * 1978-09-04 1981-11-12 Siemens AG, 1000 Berlin und 8000 München Wanderfeldröhre
DE2840782C3 (de) * 1978-09-19 1981-12-10 Siemens AG, 1000 Berlin und 8000 München Verfahren zum Herstellen einer Wanderfeldröhre mit einer wendelförmigen Verzögerungsleitung
US4229676A (en) * 1979-03-16 1980-10-21 Hughes Aircraft Company Helical slow-wave structure assemblies and fabrication methods
US4422012A (en) * 1981-04-03 1983-12-20 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ladder supported ring bar circuit
DE3229420A1 (de) * 1982-08-06 1984-02-09 Siemens AG, 1000 Berlin und 8000 München Verfahren zur herstellung einer wendelfoermigen verzoegerungsleitung fuer wanderfeldroehren

Also Published As

Publication number Publication date
US4647816A (en) 1987-03-03
DE3477090D1 (en) 1989-04-13
EP0156004A1 (fr) 1985-10-02
DE3407206A1 (de) 1985-08-29

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