EP0156004A1 - Travelling-wave tube and manufacturing method of the same - Google Patents

Travelling-wave tube and manufacturing method of the same Download PDF

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Publication number
EP0156004A1
EP0156004A1 EP84114709A EP84114709A EP0156004A1 EP 0156004 A1 EP0156004 A1 EP 0156004A1 EP 84114709 A EP84114709 A EP 84114709A EP 84114709 A EP84114709 A EP 84114709A EP 0156004 A1 EP0156004 A1 EP 0156004A1
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Prior art keywords
wave tube
delay line
traveling wave
metal layer
tube according
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Granted
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EP84114709A
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German (de)
French (fr)
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EP0156004B1 (en
Inventor
Hinrich Dr. Rer. Nat. Dipl.-Phys Heynisch
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Siemens AG
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Siemens AG
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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 invention relates to a traveling wave tube according to the preamble of claim 1.
  • Traveling wave tubes with a helical delay line accommodated within a metallic vacuum envelope are known for example from DE-PS 19 37 704.
  • a number of support rods made of dielectric material are provided which are arranged parallel to one another along surface lines of the line and have good thermal contact with the vacuum envelope.
  • the invention has for its object to provide a traveling wave tube of high performance, the delay line is characterized by very good dissipation of the heat loss and wide bandwidth.
  • the invention has the essential advantage that, by creating a double-layer (helical) delay line, one achieves that the inner layer of the The delay line is shielded against its outer jacket in such a way that the RF field strength in the interior maintains relatively high values, ie cannot be reduced by the effect of the metallic outer wall.
  • a high degree of interaction between the electron beam and the electromagnetic wave is achieved with the best possible radial heat dissipation.
  • the technology used is relatively easy and inexpensive to control.
  • a delay line 1 is shown, 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, 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 Absdhir - mung against the vacuum envelope 4.
  • a HF-field increase inside within the inner metal layer 3 ( Layer helix), ie 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 RF coupling or decoupling takes place, for example, via a coaxial waveguide 7, the inner conductor 8 of which is attached to the outside of the coil in this exemplary embodiment in such a way that a galvanic connection of the inner metal layer 3 is formed.
  • the inner conductor 8 can also be contacted only with the inner metal layer 3.
  • the vacuum envelope 4 has a spiral screwing, so that a helical structure 6 is formed, the inner surface of which is connected to the metal layer 3 on the outer surface of the distortion line 1.
  • the heat is dissipated via the metal paths of the screw-shaped structure 6 instead of the insulating layers 5 according to FIG.

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Abstract

Die Erfindung bezieht sich auf eine Wanderfeldröhre mit einer innerhalb einer massiven metallischen Vakuumhülle (4) angeordneten Verzögerungsleitung (1) in Form einer Wendel-oder einer Ring-Steg-Leitung. Es soll eine Wanderfeldröhre hoher Leistung geschaffen werden, deren Verzögerungsleitung (1) sich durch sehr gute Ableitung der Verlustwärme und große Bandbreite auszeichnet. Die Erfindung sieht hierzu vor, daß die Verzögerungsleitung (1) aus einem-Kern (2) aus lsolatormaterial besteht, der an seiner Innen- und Außenmantelflächen mit einer Metallschicht (3) versehen ist.

Figure imgaf001
The invention relates to a traveling wave tube with a delay line (1) in the form of a helix or a ring-land line arranged inside a solid metallic vacuum envelope (4). A traveling wave tube of high power is to be created, the delay line (1) of which is characterized by very good dissipation of the heat loss and wide bandwidth. To this end, the invention provides that the delay line (1) consists of a core (2) made of insulator material, which is provided with a metal layer (3) on its inner and outer surface.
Figure imgaf001

Description

Die Erfindung betrifft eine Wanderfeldröhre nach dem Oberbegriff des Anspruchs 1.The invention relates to a traveling wave tube according to the preamble of claim 1.

Wanderfeldröhren mit einer innerhalb einer metallischen Vakuumhülle untergebrachten wendelartigen Verzögerungsleitung sind beispielsweise aus der DE-PS 19 37 704 bekannt. Bei diesen Wanderfeldröhren sind eine Anzahl parallel zueinander längs Mantellinien der Leitung angeordnete Halterungsstäbe aus dielektrischem Material vorgesehen, die einen guten thermischen Kontakt zur Vakuumhülle haben.Traveling wave tubes with a helical delay line accommodated within a metallic vacuum envelope are known for example from DE-PS 19 37 704. In these traveling wave tubes, a number of support rods made of dielectric material are provided which are arranged parallel to one another along surface lines of the line and have good thermal contact with the vacuum envelope.

Es ist auch bereits bekannt, die Vakuumhülle und die Verzögerungsleitung aus Kupfer herzustellen und diese Teile mit den Halterungsstäben aus dielektrischem Material, z.B. aus Berylliumoxid, zu verlöten (DE-PS 28 38 515).It is also already known to make the vacuum envelope and the delay line from copper and to connect these parts with the support rods made of dielectric material, e.g. made of beryllium oxide, to be soldered (DE-PS 28 38 515).

Weiterhin ist es bekannt, die zunächst durch Erwärmung aufgeweitete Vakuumhülle auf die Halterungsstäbe aufschrumpfen zu lassen (DE-PS 1937704).Furthermore, it is known to shrink the vacuum envelope, which is initially widened by heating, onto the mounting rods (DE-PS 1937704).

Der Erfindung liegt die Aufgabe zugrunde, eine Wanderfeldröhre hoher Leistung zu schaffen, deren Verzögerungsleitung sich durch sehr gute Ableitung der Verlustwärme und große Bandbreite auszeichnet.The invention has for its object to provide a traveling wave tube of high performance, the delay line is characterized by very good dissipation of the heat loss and wide bandwidth.

Diese Aufgabe wird erfindungsgemäß durch eine Wanderfeldröhre mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved according to the invention by a traveling wave tube with the features of claim 1.

Weitere vorteilhafte Ausgestaltungen bzw. Weiterbildungen der Erfindung sind Gegenstand zusätzlicher Ansprüche 2b.8.Further advantageous refinements or developments of the invention are the subject of additional claims 2b.8.

Die Erfindung weist den wesentlichen Vorteil auf, daß man durch die Schaffung einer Doppel-Schicht-(wendelartigen)-Verzögerungsleitung erreicht, daß die innere Schicht der Verzögerungsleitung gegen deren Außenmantel derart abgeschirmt ist, daß die HF-Feldstärke im Innenraum relativ hohe Werte beibehält, d.h. durch die Wirkung der metallischen Außenwand nicht reduziert werden kann. Es wird ein hoher Wechselwirkungsgrad zwischen Elektronenstrahl und elektromagnetischer Welle erzielt bei bestmöglicher radialer Wärmeabführung. Die angewandte Technologie ist relativ gut und kostengünstig beherrschbar.The invention has the essential advantage that, by creating a double-layer (helical) delay line, one achieves that the inner layer of the The delay line is shielded against its outer jacket in such a way that the RF field strength in the interior maintains relatively high values, ie cannot be reduced by the effect of the metallic outer wall. A high degree of interaction between the electron beam and the electromagnetic wave is achieved with the best possible radial heat dissipation. The technology used is relatively easy and inexpensive to control.

Es kann auch zweckmäßig sein, ein Mehrschichtsystem vorzusehen, um den Effekt noch zu erhöhen.It can also be expedient to provide a multilayer system in order to further increase the effect.

Die Erfindung wird anhand von Ausführungsbeispielen weiter erläutert. Teile, die nicht unbedingt zum Verständnis der Erfindung beitragen, sind in den Figuren unbezeichnet oder weggelassen.The invention is further explained on the basis of exemplary embodiments. Parts which do not necessarily contribute to an understanding of the invention are not shown in the figures or are omitted.

Es zeigen:

  • Fig. 1 die Verzögerungsleitung der erfindungsgemäßen Wanderfeldröhre schematisch teilweise im Schnitt und
  • Fig. 2 ein weiteres Ausführungsbeispiel der Verzögerungsleitung der erfindungsgemäßen Wanderfeldröhre schematisch teilweise im Schnitt.
Show it:
  • Fig. 1 shows the delay line of the traveling wave tube according to the invention partially in section and schematically
  • Fig. 2 shows another embodiment of the delay line of the traveling wave tube according to the invention partially in section schematically.

In Fig. 1 ist eine Verzögerungsleitung 1 dargestellt, die innerhalb einer massiven metallischen Vakuumhülle-4 angeordnet ist. Die Vakuumhülle 4 besteht vorzugsweise aus Kupfer. Die Verzögerungsleitung 1 weist in diesem Ausführungsbeispiel die Gestalt einer Wendel auf. Der Kern 2 der Wendel besteht aus Isolatormaterial, vorzugsweise aus Aluminiumoxidkeramik. Auf den Außen- und Innenmantelflächen ist der Kern 2 mit einer Metallschicht 3 bedeckt, die vorzugsweise aus Kupfer besteht. Die innere Metallschicht 3 übernimmt dabei die Funktion als Verzögerungsleitung und die äußere Metallschicht 3 dient als Absdhir- mung gegen die Vakuumhülle 4. Damit wird eine HF-Felderhöhung innerhalb der inneren Metallschicht 3 (innere Schichtwendel), d.h. am Ort des Elektronenstrahls erzielt. Zwischen den mit der Metallschicht 3 versehenen Außenmantelflächen der Verzögerungsleitung 1 und der Vakuumhülle 4 sind Isolierschichten 5 vorgesehen, die vorzugsweise aus Aluminiumoxidkeramik bestehen und für eine radiale Wärmeableitung sorgen. Die HF-Ein- bzw. Auskopplung erfolgt z.B. über einen koaxialen Wellenleiter 7, dessen Innenleiter 8 in diesem Ausführungsbeispiel so an die Außenseite der Wendel angebracht ist, daß eine galvanische Verbindung der inneren Metallschicht 3 gebildet ist. Der Innenleiter 8 kann jedoch auch nur mit der inneren Metallschicht 3 kontaktiert sein.In Fig. 1, a delay line 1 is shown, which is arranged within a solid metallic vacuum envelope-4. The vacuum envelope 4 is preferably made of copper. In this exemplary embodiment, 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, 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 Absdhir - mung against the vacuum envelope 4. Thus, a HF-field increase inside within the inner metal layer 3 ( Layer helix), ie achieved at the location of the electron beam. Between the outer surface of the delay line 1 and the vacuum envelope 4 provided with the metal layer 3, insulating layers 5 are provided, which preferably consist of aluminum oxide ceramic and ensure radial heat dissipation. The RF coupling or decoupling takes place, for example, via a coaxial waveguide 7, the inner conductor 8 of which is attached to the outside of the coil in this exemplary embodiment in such a way that a galvanic connection of the inner metal layer 3 is formed. However, the inner conductor 8 can also be contacted only with the inner metal layer 3.

Bei dem in Fig. 2 dargestellten Ausführungsbeispiel weist die Vakuumhülle 4 eine spiralförmige Eindrehung auf, so daß ein schneckenförmiges Gebilde 6 entsteht, dessen Innenmantelflächen mit der Metallschicht 3 auf den Außenmantelflächen der Verzerungsleitung 1 verbunden sind. Die Wärmeabführung erfolgt in diesem Ausführungsbeispiel über die Metallpfade des schneckenförmigen Gebildes 6 anstelle der Isolierschichten 5 nach Fig. 1. Als Verzögerungsleitung 1 dient wiederum eine Wendel, deren vorzugsweise aus Aluminiumoxidkeramik bestehender Kern 2 auf seinen Innen- und Außenmantelflächen mit einer Metallschicht 3 bedeckt ist.In the embodiment shown in Fig. 2, the vacuum envelope 4 has a spiral screwing, so that a helical structure 6 is formed, the inner surface of which is connected to the metal layer 3 on the outer surface of the distortion line 1. In this exemplary embodiment, the heat is dissipated via the metal paths of the screw-shaped structure 6 instead of the insulating layers 5 according to FIG.

Claims (8)

1. Wanderfeldröhre mit einer zwischen einem Elektronenstrahlerzeugungssystem und einem Elektronenstrahlauffänger innerhalb einer massiven metallischen Vakuumhülle angeordneten Verzögerungsleitung in Form einer Wendel-oder einer Ring-Steg-Leitung, dadurch gekennzeichnet, daß die Verzögerungsleitung (1) aus einem Kern (2) aus Isolatormaterial besteht, der an sei-. nen Innen- und Außenmantelflächen mit einer Metallschicht (3) versehen ist.1. traveling wave tube with a delay line arranged in the form of a spiral or a ring-land line between an electron beam generating system and an electron beam receiver within a solid metallic vacuum envelope, characterized in that the delay line (1) consists of a core (2) made of insulator material, the one on. NEN inner and outer surface is provided with a metal layer (3). 2. Wanderfeldröhre nach Anspruch 1, dadurch gekennzeichnet, daß mindestens eine weitere gegen die Metallschicht (3) isolierte Metallschicht vorgesehen ist.2. traveling wave tube according to claim 1, characterized in that at least one further metal layer (3) insulated metal layer is provided. 3. Wanderfeldröhre nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Kern (2) aus Aluminiumoxidkeramik besteht.3. traveling wave tube according to claim 1 or 2, characterized in that the core (2) consists of aluminum oxide ceramic. 4. Wanderfeldröhre nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Metallschicht (3) aus Kupfer besteht.4. traveling wave tube according to one of claims 1 to 3, characterized in that the metal layer (3) consists of copper. 5. Wanderfeldröhre nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zwischen den mit der Metallschicht (3) versehenen Außenmantelflächen der Verzögerungsleitung (1) und der Vakuumhülle (4) Isolierschichten (5) vorgesehen sind.5. traveling wave tube according to one of claims 1 to 4, characterized in that between the outer layer with the metal layer (3) provided the delay line (1) and the vacuum envelope (4) insulating layers (5) are provided. 6. Wanderfeldröhre nach Anspruch 5, dadurch gekennzeichnet, daß die Isolierschichten (5) aus Aluminiumoxidkeramik bestehen.6. traveling wave tube according to claim 5, characterized in that the insulating layers (5) consist of aluminum oxide ceramic. 7. Wanderfeldröhre nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Vakuumhülle (4) eine spiralförmige Eindrehung aufweist, so daß ein schneckenförmiges Gebilde (6) entsteht, dessen Innenmantelflächen mit der Metallschicht (3) auf den Außenmantelflächen der Verzögerungsleitung (1) verbunden sind.7. traveling wave tube according to one of claims 1 to 4, characterized in that the vacuum envelope (4) has a spiral recess, so that a helical structure (6) is formed, the sen inner jacket surfaces are connected to the metal layer (3) on the outer jacket surfaces of the delay line (1). 8. Verfahren zum Herstellen einer Wanderfeldröhre nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß als Kern (2) der Verzögerungsleitung (1) ein Rohr aus Isoliermaterial auf seiner Innen-und Außenmantelfläche mit einer Metallschicht (3) überzogen wird, daß die Konturen der Verzögerungsleitung (1) mittels Fräs- oder Schleiftechnologie hergestellt werden und daß die Verzögerungsleitung (1) anschließend in die metallische Vakuumhülle (4) eingelötet wird.8. A method for producing a traveling wave tube according to one of claims 1 to 7, characterized in that as the core (2) of the delay line (1) is a tube made of insulating material on its inner and outer surface with a metal layer (3) that the Contours of the delay line (1) are produced using milling or grinding technology and that the delay line (1) is then soldered into the metallic vacuum envelope (4).
EP84114709A 1984-02-28 1984-12-04 Travelling-wave tube and manufacturing method of the same Expired EP0156004B1 (en)

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DE3407206 1984-02-28
DE19843407206 DE3407206A1 (en) 1984-02-28 1984-02-28 WALKING PIPES AND METHOD FOR THE PRODUCTION THEREOF

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EP0156004B1 EP0156004B1 (en) 1989-03-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597265A1 (en) * 1986-04-03 1987-10-16 Raytheon Co HELICOIDAL WAVEGUIDE STRUCTURE FOR PROGRESSIVE WAVE TUBE AND METHOD FOR MANUFACTURING THE SAME

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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Publication number Priority date Publication date Assignee Title
US3519964A (en) * 1968-07-26 1970-07-07 Microwave Ass High power slow wave circuit
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
GB2044989A (en) * 1979-03-16 1980-10-22 Hughes Aircraft Co Helical slow-wave structure assemblies and fabrication method
EP0100996A1 (en) * 1982-08-06 1984-02-22 Siemens Aktiengesellschaft Manufacturing method of a helical delay line for travelling-wave tubes

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DE1937704B2 (en) * 1969-07-24 1972-04-13 Siemens AG, 1000 Berlin u. 8000 München WALKING FIELD TUBE WITH A HELICAL DECELERATION LINE
US3691630A (en) * 1969-12-10 1972-09-19 James E Burgess Method for supporting a slow wave circuit via an array of dielectric posts
US4158791A (en) * 1977-02-10 1979-06-19 Varian Associates, Inc. Helix traveling wave tubes with resonant loss
IT1090547B (en) * 1977-10-28 1985-06-26 Elettronica Spa PROGRESSIVE WAVER HELICAL PIPES WITH SELECTIVE AUXILIARY SHIELDING USING CONDUCTIVE ELEMENTS APPLIED ON DIELECTRIC SUPPORTS
US4185225A (en) * 1978-03-24 1980-01-22 Northrop Corporation Traveling wave tube
FR2420842A1 (en) * 1978-03-24 1979-10-19 Thomson Csf DELAY LINE, FOR HYPERFREQUENCY TUBE, COOLED BY FLUID CIRCULATION AND HYPERFREQUENCY TUBE CONTAINING SUCH A LINE
DE2838515C3 (en) * 1978-09-04 1981-11-12 Siemens AG, 1000 Berlin und 8000 München Traveling wave tube
DE2840782C3 (en) * 1978-09-19 1981-12-10 Siemens AG, 1000 Berlin und 8000 München Method of manufacturing a traveling wave tube with a helical delay line
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

Patent Citations (5)

* 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
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
GB2044989A (en) * 1979-03-16 1980-10-22 Hughes Aircraft Co Helical slow-wave structure assemblies and fabrication method
EP0100996A1 (en) * 1982-08-06 1984-02-22 Siemens Aktiengesellschaft Manufacturing method of a helical delay line for travelling-wave tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597265A1 (en) * 1986-04-03 1987-10-16 Raytheon Co HELICOIDAL WAVEGUIDE STRUCTURE FOR PROGRESSIVE WAVE TUBE AND METHOD FOR MANUFACTURING THE SAME

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DE3407206A1 (en) 1985-08-29
DE3477090D1 (en) 1989-04-13
EP0156004B1 (en) 1989-03-08
US4647816A (en) 1987-03-03

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