EP0024591A1 - Travelling-wave tube, in particular high-power travelling-wave tube - Google Patents

Travelling-wave tube, in particular high-power travelling-wave tube Download PDF

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Publication number
EP0024591A1
EP0024591A1 EP80104635A EP80104635A EP0024591A1 EP 0024591 A1 EP0024591 A1 EP 0024591A1 EP 80104635 A EP80104635 A EP 80104635A EP 80104635 A EP80104635 A EP 80104635A EP 0024591 A1 EP0024591 A1 EP 0024591A1
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Prior art keywords
rectangular waveguide
delay line
wall
line
longitudinal axis
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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.)
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Application number
EP80104635A
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German (de)
French (fr)
Inventor
Franz Dr. Gross
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Siemens AG
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Siemens AG
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Publication of EP0024591A1 publication Critical patent/EP0024591A1/en
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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
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy

Definitions

  • the invention relates to a field tube, in particular a high-performance wave tube, with a spatially periodic permanent magnet system for bundled guidance of an electron beam and a delay line surrounded by it, which consists of line cells located one behind the other, each of which is separated by an electron beam passage opening and at least one transverse wall having an essentially circumferential coupling opening , and is coupled at least on one of its two end faces with a seamless rectangular waveguide leading essentially at right angles away from the line axis, the broad side of which extends perpendicular to the longitudinal axis of the delay line and the narrow side of which tapered towards the delay line to approximately the distance between adjacent transverse walls.
  • Such a field tube is known from DE-PS 25 25 598.
  • the broad side of the rectangular waveguide narrows in sections towards the delay line in front of the line axis, forming an aperture consisting of two aperture projections.
  • this embodiment has the disadvantage that the diaphragm protrusions are milled into the rectangular waveguide and a mostly necessary subsequent correction of the diaphragm setting is not possible.
  • the object of the present invention is to avoid this disadvantage and to provide a runway tube, the energy coupling or decoupling of which allows subsequent corrections of the optimal adjustment setting with much simpler manufacture.
  • a short-circuit slide is arranged in the bottom of the rectangular waveguide at a distance S from the longitudinal axis of the delay line, and that at the level of the longitudinal axis of the delay line in the broadside opposite the delay line Rectangular waveguide, a hollow cylindrical adapter element with an outer diameter d is provided, which is retractably adjustable from the inner wall of the rectangular waveguide by a dimension h, the sizes S, d and h determining the optimal adaptation of the rectangular waveguide.
  • the invention has the advantage that the higher inductance previously achieved by inductive diaphragms in the vicinity of the transition from the waveguide to the delays tion line is practically achieved by increasing the waveguide height in the vicinity of the beam entry into the delay line with the aid of the adapter element, which is retracted by a dimension h against the broad side of the waveguide inner wall.
  • the hollow cylindrical adapter element is expediently adjusted to optimum adaptation after the soldering in of the delay line into the supply line waveguide and before the soldering in of the vacuum window by means of threads or with the aid of defined washers and soldered in this position.
  • the region of the coupling waveguide near the line shown in the figure consists of a rectangular waveguide 1, which is closed at its bottom by a short-circuit slide 3, which is arranged in the rectangular waveguide 1 at a distance S from the longitudinal axis 5 of the delay line 2.
  • the delay line 2 consists in this embodiment of a succession stacking same discs 6. Each disk has a circumferential web, a central bore (electron passage opening 7) as well as a coupling aperture 8 in form over the preceding disc each twisted segment of a circle and is 180 0th This creates a delay line device in the manner of coupled cavities with a backward-running fundamental wave.
  • the delay line 2 is surrounded by a metallic vacuum envelope, not shown, the vacuum envelope itself by a permanent magnet system, not shown.
  • a hollow cylindrical adapter element 4 with an outer diameter d is provided, which is retractably adjustable from the inner wall of the rectangular waveguide 1 by a dimension h.
  • the adapting element 4 has a shoulder on the outer wall of the rectangular waveguide 1 with a larger outer diameter.
  • the setting of the dimension h is expediently carried out by washers, not shown, which are attached between the shoulder and the outer wall of the rectangular waveguide 1.
  • the adapter element 4 is provided with an external thread and screwed into the rectangular waveguide 1.
  • the dimension h can be set easily and precisely.
  • the step in the adaptation element 4 can also be dispensed with.
  • the broadband adaptation of the coupling conductor takes place at a given diameter d of the adapter element 4 by optimally setting the short-circuit slide 3 and thus the distance S and the adapter element 4 and thus the dimension h. Then the short-circuit slide 3 and the adapter 4 are locked.

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Abstract

For broadband, low-reflection energy coupling and decoupling in a line consisting of coupled cavities, it is proposed to provide a hollow-cylindrical matching element (4), of the height of the longitudinal axis of the line, in the broad side of the rectangular waveguide (1) running at right angles to the delay line (2), the matching element (4) being withdrawn adjustably from the waveguide inner wall by a distance h. <IMAGE>

Description

Die Erfindung betrifft eine Lauffeldröhre, insbesondere Hochleistungswaenfeldröhre, mit einem räumlich periodischen Permanentmagnetsystem zur gebündelten Führung eines Elektronenstrahls und einer davon umgebenen Verzögerungsleitung, die aus hintereinanderliegenden Leitungszellen besteht, welche durch jeweils eine Elektronenstrahldurchtrittsöffnung und mindestens eine sich im wesentlichen in Umfangsrichtung erstreckende Koppelöffnung aufweisende Querwände getrennt sind, und zumindest an einer ihrer beiden Stirnseiten mit einem steglosen, im wesentlichen rechtwinklig von der Leitungsachse wegführenden Rechteck-Hohlleiter verkoppelt ist, dessen Breitseite senkrecht zur Längsachse der Verzögerungsleitung verläuft und dessen Schmalseite sich zur Verzögerungsleitung hin auf etwa den Abstand benachbarter Querwände stetig verjüngt.The invention relates to a field tube, in particular a high-performance wave tube, with a spatially periodic permanent magnet system for bundled guidance of an electron beam and a delay line surrounded by it, which consists of line cells located one behind the other, each of which is separated by an electron beam passage opening and at least one transverse wall having an essentially circumferential coupling opening , and is coupled at least on one of its two end faces with a seamless rectangular waveguide leading essentially at right angles away from the line axis, the broad side of which extends perpendicular to the longitudinal axis of the delay line and the narrow side of which tapered towards the delay line to approximately the distance between adjacent transverse walls.

Eine derartige Lauffeldröhre ist aus der DE-PS 25 25 598 bekannt. Zur breitbandigen Energieeinkopplung ist bei dieser Lauffeldröhre vorgesehen, daß sich die Breitseite des Rechteck-Hohlleiters zur Verzögerungsleitung hin vor der Leitungsachse unter Bildung einer aus zwei Blenden-Vorsprüngen bestehenden Blende abschnittsweise verengt. Diese Ausführungsform hat jedoch den Nachteil, daß die Blenden-Vorsprünge in den Rechteck-Hohlleiter eingefräst sind und eine meist notwendige nachträgliche Korrektur der Blendeneinstellung nicht möglich ist.Such a field tube is known from DE-PS 25 25 598. For broadband energy coupling, it is provided in this turret tube that the broad side of the rectangular waveguide narrows in sections towards the delay line in front of the line axis, forming an aperture consisting of two aperture projections. However, this embodiment has the disadvantage that the diaphragm protrusions are milled into the rectangular waveguide and a mostly necessary subsequent correction of the diaphragm setting is not possible.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, diesen Nachteil zu vermeiden und eine Lauffeldröhre zu schaffen, deren Energieein- bzw. -auskopplung bei wesentlich einfacherer Herstellung nachträglicheKorrekturen der optimalen Anpassungseinstellung ermöglicht. Zur Lösung dieser Aufgabe wird bei einer Lauffeldröhre der eingangs genannten Art erfindungsgemäß vorgeschlagen, daß im Boden des Rechteck-Hohlleiters im Abstand S von der Längsachse der Verzögerungsleitung ein Kurzschlußschieber angeordnet ist, und daß in Höhe der Längsachse der Verzögerungsleitung in der der Verzögerungsleitung gegenüberliegenden Breitseite des Rechteck-Hohlleiters ein hohlzylindrisches Anpaßelement mit einem Außendurchmesser d vorgesehen ist, das von der Innenwand des Rechteck-Hohlleiters um ein Maß h einstellbar zurückgezogen ist, wobei die Größen S, d und h die optimale Anpassung des Rechteck-Hohlleiters bestimmen.The object of the present invention is to avoid this disadvantage and to provide a runway tube, the energy coupling or decoupling of which allows subsequent corrections of the optimal adjustment setting with much simpler manufacture. To solve this problem, it is proposed according to the invention in a turret tube of the type mentioned that a short-circuit slide is arranged in the bottom of the rectangular waveguide at a distance S from the longitudinal axis of the delay line, and that at the level of the longitudinal axis of the delay line in the broadside opposite the delay line Rectangular waveguide, a hollow cylindrical adapter element with an outer diameter d is provided, which is retractably adjustable from the inner wall of the rectangular waveguide by a dimension h, the sizes S, d and h determining the optimal adaptation of the rectangular waveguide.

Die Erfindung hat den Vorteil, daß die früher durch induktive Blenden realisierte höhere Induktivität in der Nähe des Übergangs vom Hohlleiter in die Verzögerungsleitung praktisch durch Vergrößerung der Hohlleiterhöhe in der Umgebung des Strahleintritts in die Verzögerungsleitung mit Hilfe des Anpaßelements erreicht wird, das gegen die Breitseite der Hohlleiterinnenwand um ein Maß h.zurückgezogen ist. Das hohlzylindrische Anpaßelement wird zweckmäßig nach dem Einlöten der Verzögerungsleitung in den Zuleitungshohlleiter und vor dem Einlöten des Vakuumfensters durch Gewinde oder mit Hilfe definierter Beilagsscheiben auf optimale Anpassung eingestellt und in dieser Lage festgelötet.The invention has the advantage that the higher inductance previously achieved by inductive diaphragms in the vicinity of the transition from the waveguide to the delays tion line is practically achieved by increasing the waveguide height in the vicinity of the beam entry into the delay line with the aid of the adapter element, which is retracted by a dimension h against the broad side of the waveguide inner wall. The hollow cylindrical adapter element is expediently adjusted to optimum adaptation after the soldering in of the delay line into the supply line waveguide and before the soldering in of the vacuum window by means of threads or with the aid of defined washers and soldered in this position.

Weitere Einzelheiten der Erfindung sollen an Hand eines in der Figur der Zeichnung dargestellten Ausführungsbeispiels näher erläutert werden. Dabei ist lediglich ein Schnitt durch den leitungsnahen Bereich des Koppelhohlleiters dargestellt. Zum Verständnis des Gesamtaufbaues der Lauffeldröhre sei auf die eingangs genannte deutsche Patentschrift verwiesen.Further details of the invention will be explained in more detail with reference to an embodiment shown in the figure of the drawing. Only a section through the region of the coupling waveguide near the line is shown. To understand the overall structure of the turret tube, reference is made to the aforementioned German patent.

Der in der Figur dargestellte leitungsnahe Bereich des Koppelhohlleiters besteht aus einem Rechteck-Hohlleiter 1, der an seinem Boden mit einem Kurzschlußschieber 3 abgeschlossen ist, der im Rechteck-Hohlleiter 1 in einem Abstand S von der Längsachse 5 der Verzögerungsleitung 2 angeordnet ist. Die Verzögerungsleitung 2 besteht in diesem Ausführungsbeispiel aus einer Aufeinanderstapelung gleicher Scheiben 6. Jede Scheibe weist einen umlaufenden Steg, eine zentrale Bohrung (Elektronenstrahldurchtrittsöffnung 7) sowie eine Koppelöffnung 8 in Form eines Kreissegmentes auf und ist gegenüber der vorausgehenden Scheibe jeweils um 1800 verdreht. Auf diese Weise entsteht eine Verzögerungsleitung nach Art gekoppelter Hohlräume mit einer rückwärtslaufenden Grundwelle. Die Verzögerungsleitung 2 ist von einer nicht dargestellten metallischen Vakuumhülle umgeben, die Vakuumhülle ihrerseits von einem nicht dargestellten Permanentmagnetsystem. In Höhe der Längsachse 5 der Verzögerungsleitung 2 ist in der der Verzögerungsleitung 2 gegenüberliegenden Breitseite. des zur Einkopplung bzw. Auskopplung der HF-Energie dienenden Rechteck-Hohlleiters 1 ein hohlzylindrisches Anpaßelement 4 mit einem Außendurchmesser d vorgesehen, das von der Innenwand des Rechteck-Hohlleiters 1 um ein Maß h einstellbar zurückgezogen ist. Das Anpaßelement 4 hat in diesem Ausführungsbeispiel an der Außenwand des Rechteck-Hohlleiters 1 einen Absatz mit einem größeren Außendurchmesser. Das Einstellen des Maßes h wird zweckmäßig durch nicht dargestellte Beilagscheiben, die zwischen dem Absatz und der Außenwand des Rechteck-Hohlleiters 1 angebracht werden, vorgenommen. Bei einer bevorzugten Ausführungsform ist das Anpaßelement 4 mit einem Außengewinde versehen und in den Rechteckhohlleiter 1 eingeschraubt. Auf diese Weise läßt sich das Maß h einfach und genau einstellen. Bei dieser Ausführungsform kann auch auf den Absatz im Anpaßelement 4 verzichtet werden. Die breitbandige Anpassung des Koppelleiters erfolgt bei vorgegebenem Durchmesser d des Anpaßelementes 4 durch optimale Einstellung des Kurzschlußschiebers 3 und damit des Abstandes S sowie des Anpaßelementes 4 und damit des Maßes h. Anschließend werden der Kurzschlußschieber 3 und das Anpaßelement 4 arretiert.The region of the coupling waveguide near the line shown in the figure consists of a rectangular waveguide 1, which is closed at its bottom by a short-circuit slide 3, which is arranged in the rectangular waveguide 1 at a distance S from the longitudinal axis 5 of the delay line 2. The delay line 2 consists in this embodiment of a succession stacking same discs 6. Each disk has a circumferential web, a central bore (electron passage opening 7) as well as a coupling aperture 8 in form over the preceding disc each twisted segment of a circle and is 180 0th This creates a delay line device in the manner of coupled cavities with a backward-running fundamental wave. The delay line 2 is surrounded by a metallic vacuum envelope, not shown, the vacuum envelope itself by a permanent magnet system, not shown. At the level of the longitudinal axis 5 of the delay line 2 is in the broad side opposite the delay line 2. of the rectangular waveguide 1 used for coupling or decoupling the HF energy, a hollow cylindrical adapter element 4 with an outer diameter d is provided, which is retractably adjustable from the inner wall of the rectangular waveguide 1 by a dimension h. In this exemplary embodiment, the adapting element 4 has a shoulder on the outer wall of the rectangular waveguide 1 with a larger outer diameter. The setting of the dimension h is expediently carried out by washers, not shown, which are attached between the shoulder and the outer wall of the rectangular waveguide 1. In a preferred embodiment, the adapter element 4 is provided with an external thread and screwed into the rectangular waveguide 1. In this way, the dimension h can be set easily and precisely. In this embodiment, the step in the adaptation element 4 can also be dispensed with. The broadband adaptation of the coupling conductor takes place at a given diameter d of the adapter element 4 by optimally setting the short-circuit slide 3 and thus the distance S and the adapter element 4 and thus the dimension h. Then the short-circuit slide 3 and the adapter 4 are locked.

Claims (3)

1. Lauffeldröhre, insbesondere Hochleistungswanderfeldröhre, mit einem räumlich periodischen Permanentmagnetsystem zur gebündelten Führung eines Elektronenstrahls und mit einer davon umgebenen Verzögerungsleitung, die aus hintereinanderliegenden Leitungszellen besteht, welche durch jeweils eine Elektronenstrahldurchtrittsöffnung und mindestens eine sich im wesentlichen in Umfangsrichtung erstreckende Koppelöffnung aufweisende Querwände getrennt sind, und zumindest an einer ihrer beiden Stirnseiten mit einem steglosen, im wesentlichen rechtwinklig von der Leitungsachse wegführenden Rechteck-Hohlleiter verkoppelt ist, dessen Breitseite senkrecht zur Längsachse der Verzögerungsleitung verläuft und dessen Schmalseite sich zur Yerzögerungsleitung hin auf etwa den Abstand benachbarter Querwände stetig verjüngt, dadurch gekennzeichnet , daß im Boden des Rechteck-Hohlleiters (1) im Abstand S von der Längsachse (5) der Verzögerungsleitung (2) ein Kurzschlußschieber (3) angeordnet ist, und daß in Höhe der Längsachse (5) der Verzögerungsleitung (2) in der der Verzögerungsleitung (2) gegenüberliegenden Breitseite des Rechteck-Hohlleiters (1) ein hohlzylindrisches Anpaßelement (4) mit einem Außendurchmesser d vorgesehen ist, das von der Innenwand des Rechteck-Hohlleiters (1) um ein Maß h einstellbar zurückgezogen ist, wobei die Größen S, d und h die optimale Anpassung des Rechteck-Hohlleiters (1) bestimmen.1. turret tube, in particular high-performance traveling wave tube, with a spatially periodic permanent magnet system for bundled guidance of an electron beam and with a delay line surrounded by it, which consists of line cells lying one behind the other, each of which is separated by an electron beam passage opening and at least one transverse wall having a coupling opening that extends essentially in the circumferential direction, and is coupled at least on one of its two end faces with a seamless rectangular waveguide that extends essentially at right angles away from the line axis, the broad side of which extends perpendicular to the longitudinal axis of the delay line and the narrow side of which tapered towards the delay line to approximately the distance between adjacent transverse walls, characterized in that that in the bottom of the rectangular waveguide (1) at a distance S from the longitudinal axis (5) of the delay line (2) a short-circuit slide (3) is arranged, and that i n The height of the longitudinal axis (5) of the delay line (2) in the broad side of the rectangular waveguide (1) opposite the delay line (2) is provided with a hollow cylindrical adapter element (4) with an outer diameter d that extends from the inner wall of the rectangular waveguide ( 1) is retractable by a dimension h, the sizes S, d and h determining the optimal adaptation of the rectangular waveguide (1). 2. Lauffeldröhre nach Anspruch 1, dadurch gekennzeichnet , daß das hohlzylindrische Anpaßelement (4) zum Einstellen des Maßes h mit einem Außengewinde versehen ist.2. Running tube according to claim 1, characterized in that the hollow cylindrical adapter element (4) for adjusting the dimension h is provided with an external thread. 3. Lauffeldröhre nach Anspruch 1, dadurch gekennzeichnet , daß das Anpaßelement (4) an der Außenwand des Rechteck-Hohlleiters (1) einen Absatz mit größerem Außendurchmesser aufweist, so daß das Maß h mittels Beilagscheiben zwischen Absatz und Außenwand des Rechteck-Hohlleiters (1) einstellbar ist.3. turret tube according to claim 1, characterized in that the adapter (4) on the outer wall of the rectangular waveguide (1) has a shoulder with a larger outer diameter, so that the dimension h by means of washers between the shoulder and the outer wall of the rectangular waveguide (1 ) is adjustable.
EP80104635A 1979-08-27 1980-08-06 Travelling-wave tube, in particular high-power travelling-wave tube Withdrawn EP0024591A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792934556 DE2934556A1 (en) 1979-08-27 1979-08-27 SLIDING PIPES, IN PARTICULAR HIGH-PERFORMANCE PIPING PIPES
DE2934556 1979-08-27

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EP0024591A1 true EP0024591A1 (en) 1981-03-11

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EP80104635A Withdrawn EP0024591A1 (en) 1979-08-27 1980-08-06 Travelling-wave tube, in particular high-power travelling-wave tube

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3311910A1 (en) * 1983-03-31 1984-10-04 Siemens AG, 1000 Berlin und 8000 München WALKING PIPES

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR967662A (en) * 1948-06-04 1950-11-09 Csf Improvements to wave propagation tubes
DE836512C (en) * 1949-10-17 1952-04-15 Csf Shortwave amplifier using a transit time tube
US2936395A (en) * 1955-09-30 1960-05-10 Hughes Aircraft Co Traveling wave tube
US2947908A (en) * 1958-04-15 1960-08-02 Litton Ind Of California Output structure for electron discharge devices employing cavity resonators
US3441783A (en) * 1964-12-07 1969-04-29 English Electric Valve Co Ltd Travelling wave amplifier tubes
DE1295096B (en) * 1962-03-23 1969-05-14 Siemens Ag Arrangement for broadband coupling of the helical line of a runway pipe to a waveguide
DE1296272B (en) * 1960-09-16 1969-05-29 Varian Associates Elongated electron beam amplifier tube with a delay line of the trefoil structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR967662A (en) * 1948-06-04 1950-11-09 Csf Improvements to wave propagation tubes
DE836512C (en) * 1949-10-17 1952-04-15 Csf Shortwave amplifier using a transit time tube
US2936395A (en) * 1955-09-30 1960-05-10 Hughes Aircraft Co Traveling wave tube
US2947908A (en) * 1958-04-15 1960-08-02 Litton Ind Of California Output structure for electron discharge devices employing cavity resonators
DE1296272B (en) * 1960-09-16 1969-05-29 Varian Associates Elongated electron beam amplifier tube with a delay line of the trefoil structure
DE1295096B (en) * 1962-03-23 1969-05-14 Siemens Ag Arrangement for broadband coupling of the helical line of a runway pipe to a waveguide
US3441783A (en) * 1964-12-07 1969-04-29 English Electric Valve Co Ltd Travelling wave amplifier tubes

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